National Library of Energy BETA

Sample records for whole-house systems approach

  1. Whole-House Systems Approach

    Broader source: Energy.gov [DOE]

    A whole-house systems approach considers the house as an energy system with interdependent parts, each of which affects the performance of the entire system.

  2. Whole-House Systems Approach | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Design Design for Efficiency Whole-House Systems Approach Whole-House Systems Approach The whole-house systems approach used to design this ultra-efficient home at Lone Star ...

  3. Whole-House Systems Approach | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Design » Design for Efficiency » Whole-House Systems Approach Whole-House Systems Approach The whole-house systems approach used to design this ultra-efficient home at Lone Star Ranch in Frisco, Texas, resulted in a home that consumes no more energy that its renewable energy systems produce. Photo from Building Science Corporation. The whole-house systems approach used to design this ultra-efficient home at Lone Star Ranch in Frisco, Texas, resulted in a home that consumes no more energy that

  4. Advanced Controls for Residential Whole-House Ventilation Systems

    SciTech Connect (OSTI)

    Turner, William; Walker, Iain; Sherman, Max

    2014-08-01

    Whole-house ventilation systems are becoming commonplace in new construction, remodeling/renovation, and weatherization projects, driven by combinations of specific requirements for indoor air quality (IAQ), health and compliance with standards, such as ASHRAE 62.2. Ventilation systems incur an energy penalty on the home via fan power used to drive the airflow, and the additional space-conditioning load associated with heating or cooling the ventilation air. Finding a balance between IAQ and energy use is important if homes are to be adequately ventilated while not increasing the energy burden. This study used computer simulations to examine RIVEC the Residential Integrated Ventilation Controller - a prototype ventilation controller that aims to deliver whole-house ventilation rates that comply with ventilation standards, for the minimum use of energy. Four different whole-house ventilation systems were simulated, both with and without RIVEC, so that the energy and IAQ results could be compared. Simulations were conducted for 13 US climate zones, three house designs, and three envelope leakage values. The results showed that the RIVEC controller could typically return ventilation energy savings greater than 40percent without compromising long-term chronic or short-term acute exposures to relevant indoor contaminants. Critical and average peak power loads were also reduced as a consequence of using RIVEC.

  5. Towards SustainabilityGreen Building, Sustainability Objectives, and Building America Whole House Systems Research

    SciTech Connect (OSTI)

    none,

    2008-02-01

    This paper discusses Building America whole-house systems research within the broad effort to reduce or eliminate the environmental impact of building and provides specific recommendations for future Building America research based on Building Science Corporations experience with several recent projects involving green home building programs.

  6. Whole-House Ventilation | Department of Energy

    Office of Environmental Management (EM)

    - 2:37pm Addthis A whole-house ventilation system with dedicated ducting in a new energy-efficient home. | Photo courtesy of iStockphotobrebca. A whole-house ventilation...

  7. Whole-House Ventilation | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Ventilation » Whole-House Ventilation Whole-House Ventilation A whole-house ventilation system with dedicated ducting in a new energy-efficient home. | Photo courtesy of ©iStockphoto/brebca. A whole-house ventilation system with dedicated ducting in a new energy-efficient home. | Photo courtesy of ©iStockphoto/brebca. Energy-efficient homes -- both new and existing -- require mechanical ventilation to maintain indoor air quality. There are four basic mechanical whole-house ventilation

  8. Cooling with a Whole House Fan | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Heat & Cool » Home Cooling Systems » Cooling with a Whole House Fan Cooling with a Whole House Fan This whole-house fan is installed on the ceiling between the attic and living space. The louvers close when the fan is not operating. | Photo courtesy of Allison Casey. This whole-house fan is installed on the ceiling between the attic and living space. The louvers close when the fan is not operating. | Photo courtesy of Allison Casey. Whole house cooling using a whole house fan can

  9. Building America Residential System Research Results: Achieving 30% Whole House Energy Savings Level in Cold Climates

    SciTech Connect (OSTI)

    Building Industry Research Alliance; Building Science Consortium; Consortium for Advanced Residential Buildings; Florida Solar Energy Center; IBACOS; National Renewable Energy Laboratory

    2006-08-01

    The Building America program conducts the system research required to reduce risks associated with the design and construction of homes that use an average of 30% to 90% less total energy for all residential energy uses than the Building America Research Benchmark, including research on homes that will use zero net energy on annual basis. To measure the program's progress, annual research milestones have been established for five major climate regions in the United States. The system research activities required to reach each milestone take from 3 to 5 years to complete and include research in individual test houses, studies in pre-production prototypes, and research studies with lead builders that provide early examples that the specified energy savings level can be successfully achieved on a production basis. This report summarizes research results for the 30% energy savings level and demonstrates that lead builders can successfully provide 30% homes in Cold Climates on a cost-neutral basis.

  10. Existing Whole-House Solutions Case Study: Multifamily Individual Heating and Ventilation Systems, Lawrence, Massachusetts

    SciTech Connect (OSTI)

    2013-11-01

    The conversion of an older Massachusetts building into condominiums illustrates a safe, durable, and cost-effective solution for heating and ventilation systems that can potentially benefit millions of multifamily buildings. In this project, Merrimack Valley Habitat for Humanity (MVHfH) partnered with U.S. Department of Energy Building America team Building Science Corporation (BSC) to provide high performance affordable housing for 10 families in the retrofit of an existing mass masonry building (a former convent).

  11. Building America Whole-House Solutions for Existing Homes: Inverted...

    Energy Savers [EERE]

    Building America Whole-House Solutions for Existing Homes: Inverted Attic Bulkhead for HVAC Ductwork This occupied test home received a modified truss system to accommodate ...

  12. Building America Residential System Research Results: Achieving 30% Whole House Energy Savings Level in Marine Climates; January 2006 - December 2006

    SciTech Connect (OSTI)

    Building America Industrialized Housing Partnership; Building Industry Research Alliance; Building Science Consortium; Consortium for Advanced Residential Buildings; Davis Energy Group; IBACOS; National Association of Home Builders Research Center; National Renewable Energy Laboratory

    2006-12-01

    The Building America program conducts the system research required to reduce risks associated with the design and construction of homes that use an average of 30% to 90% less total energy for all residential energy uses than the Building America Research Benchmark, including research on homes that will use zero net energy on annual basis. To measure the program's progress, annual research milestones have been established for five major climate regions in the United States. The system research activities required to reach each milestone take from 3 to 5 years to complete and include research in individual test houses, studies in pre-production prototypes, and research studies with lead builders that provide early examples that the specified energy savings level can be successfully achieved on a production basis. This report summarizes research results for the 30% energy savings level and demonstrates that lead builders can successfully provide 30% homes in the Marine Climate Region on a cost neutral basis.

  13. Building America Whole-House Solutions for Existing Homes: Multifamily

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Individual Heating and Ventilation Systems | Department of Energy Multifamily Individual Heating and Ventilation Systems Building America Whole-House Solutions for Existing Homes: Multifamily Individual Heating and Ventilation Systems The conversion of an older Massachusetts building into condominiums illustrates a safe, durable, and cost-effective solution for heating and ventilation systems in multifamily buildings. Multifamily Individual Heating and Ventilation Systems - Lawrence,

  14. Building America Whole-House Solutions for Existing Homes: Cascade...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Building America Whole-House Solutions for Existing Homes: Cascade Apartments - Deep Energy Multifamily Retrofit (Fact Sheet) Building America Whole-House Solutions for Existing...

  15. Building America Whole-House Solutions for Existing Homes: Performance...

    Energy Savers [EERE]

    Stockton, California (Fact Sheet) Building America Whole-House Solutions for Existing Homes: Performance of a Hot-Dry Climate Whole-House Retrofit, Stockton, California (Fact ...

  16. Building America Whole-House Solutions for Existing Homes: Cascade...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Building America Whole-House Solutions for Existing Homes: Conway Street Apartments - Greenfield, Massachusetts Building America Whole-House Solutions ...

  17. Building America Whole-House Solutions for Existing Homes: Multifamily...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Building America Whole-House Solutions for New Homes: Shaw Construction, Aspen, Colorado Building America Whole-House Solutions for Existing Homes: Conway Street Apartments - ...

  18. Buildng America Whole-House Solutions for New Homes: William...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Buildng America Whole-House Solutions for New Homes: William Ryan Homes, Tampa, Florida Buildng America Whole-House Solutions for New Homes: William Ryan Homes, Tampa, Florida Case ...

  19. List of Whole House Fans Incentives | Open Energy Information

    Open Energy Info (EERE)

    upgrades Water Heaters Whole House Fans LED Exit Signs CHPCogeneration Biomass Photovoltaics Yes Georgia Environmental Finance Authority - Residential Energy Efficiency...

  20. Buildng America Whole-House Solutions for New Homes: William...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Building America Whole-House Solutions for New Homes: Tommy Williams Homes, Gainesville, Florida Building America Best Practices Series Volume 15: 40% ...

  1. Cooling with a Whole House Fan | Department of Energy

    Office of Environmental Management (EM)

    circulating fans provide acceptable summer comfort for many families, even in hot weather. In addition to whole house fans, the ducts of your central heating and cooling...

  2. Building America Whole-House Solutions for New Homes: Insight...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Building America Whole-House Solutions for New Homes: Insight Homes, Seaford, Delaware Case study of Insight Homes, who worked with the Building America research partner IBACOS to ...

  3. Building America Whole-House Solutions for New Homes: Devoted...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Cold Climates DOE Zero Energy Ready Home: Durable Energy Builders, Houston, Texas Building America Whole-House Solutions for New Homes: Nelson Construction, Farmington, Connecticut

  4. Building America Whole-House Solutions for New Homes: Northwest...

    Energy Savers [EERE]

    High-Performance Test Homes Building America Whole-House Solutions for New Homes: Northwest Energy Efficient Manufactured Housing Program High-Performance Test Homes This project ...

  5. Building America Whole-House Solutions for Existing Homes: Cascade...

    Energy Savers [EERE]

    Homes: Cascade Apartments - Deep Energy Multifamily Retrofit (Fact Sheet) Building America Whole-House Solutions for Existing Homes: Cascade Apartments - Deep Energy Multifamily...

  6. Building America Whole-House Solutions for New Homes: Treasure...

    Energy Savers [EERE]

    Treasure Homes, Sacramento, California Building America Whole-House Solutions for New Homes: Treasure Homes, Sacramento, California Case study of Treasure Homes, who worked with ...

  7. Building America Whole-House Solutions for Existing Homes: Passive...

    Energy Savers [EERE]

    Air Transfer, Fresno, California (Fact Sheet) Building America Whole-House Solutions for Existing Homes: Passive Room-to-Room Air Transfer, Fresno, California (Fact Sheet) In this ...

  8. Building America Whole-House Solutions for New Homes: Exterior...

    Energy Savers [EERE]

    Fresno, California Building America Whole-House Solutions for New Homes: Exterior Rigid Foam Insulation at the Edge of a Slab Foundation, Fresno, California Exterior rigid ...

  9. Building America Whole-House Solutions for New Homes: Grupe,...

    Energy Savers [EERE]

    Grupe, Rocklin, California Building America Whole-House Solutions for New Homes: Grupe, Rocklin, California Case Study of Grupe who worked with Building America research partner ...

  10. Building America Whole-House Solutions for Existing Homes: Applying...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Building America Whole-House Solutions for Existing Homes: Applying Best Practices to Florida Local Government Retrofit Programs - Central Florida (Fact Sheet) Building America ...

  11. Building America Whole-House Solutions for Existing Homes: Greenbelt...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Greenbelt Homes, Inc. Pilot Retrofit Project - Greenbelt, Maryland Building America Whole-House Solutions for Existing Homes: Greenbelt Homes, Inc. Pilot Retrofit Project - ...

  12. Building America Whole-House Solutions for Existing Homes: National...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Building America Whole-House Solutions for Existing Homes: National Grid Deep Energy Retrofit Pilot, Massachusetts and Rhode Island (Fact Sheet) Building Science Corporation ...

  13. Building America Whole-House Solutions for Existing Homes: Pilot...

    Energy Savers [EERE]

    Pilot Demonstration of Phased Retrofits in Florida Homes - Central and South Florida (Fact Sheet) Building America Whole-House Solutions for Existing Homes: Pilot Demonstration of ...

  14. Building America Whole-House Solutions for New Homes: Quadrant...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Quadrant Homes, Kent, Washington Building America Whole-House Solutions for New Homes: Quadrant Homes, Kent, Washington Case study of Quadrant Homes, who worked with Building ...

  15. Building America Whole-House Solutions for Existing Homes: Applying...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Homes: Applying Best Practices to Florida Local Government Retrofit Programs - Central Florida (Fact Sheet) Building America Whole-House Solutions for Existing Homes: ...

  16. Building America Whole-House Solutions for Existing Homes: Applying...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Solutions for Existing Homes: Case Study: Build San Antonio Green, San Antonio, Texas Building America Whole-House Solutions for Existing Homes: Pilot Demonstration of Phased ...

  17. Building America Whole-House Solutions for New Homes: Transformations...

    Energy Savers [EERE]

    Transformations, Inc. Net Zero Energy Communities (Fact Sheet) Building America Whole-House Solutions for New Homes: Transformations, Inc. Net Zero Energy Communities (Fact Sheet)...

  18. Building America Whole-House Solutions for Existing Homes: Conway...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Conway Street Apartments - Greenfield, Massachusetts Building America Whole-House Solutions for Existing Homes: Conway Street Apartments - Greenfield, Massachusetts Through recent ...

  19. Building America Whole-House Solutions for New Homes: Winchester...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and Camberly Homes - Silver Spring, Maryland (Fact Sheet) Building America Whole-House Solutions for New Homes: Winchester Homes and Camberly Homes - Silver Spring, Maryland ...

  20. Building America Whole-House Solutions for New Homes: Challenges...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    in Multifamily Dwellings, Upstate New York Building America Whole-House Solutions for New Homes: Challenges of Achieving 2012 IECC Air Sealing Requirements in Multifamily ...

  1. Whole-House Solutions Case Study: Sunnyvale Marine Climate Deep...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Whole-House Solutions Case Study: Sunnyvale Marine Climate Deep Retrofit The Alliance for Residential Building Innovation (ARBI) and Allen Gilliland of One Sky Homes collaborated ...

  2. Building America Whole-House Solutions for New Homes: Schneider...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    PDF icon Schneider Homes, Inc.: Village at Miller Creek - Burien, WA More Documents & Publications Building America Whole-House Solutions for New Homes: Tom Walsh & Co., Portland, ...

  3. Building America Whole-House Solutions for New Homes: Artistic...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Artistic Homes, Albuquerque, New Mexico Building America Whole-House Solutions for New Homes: Artistic Homes, Albuquerque, New Mexico Case study of Artistic Homes who worked with ...

  4. Building America Whole-House Solutions for New Homes: Lancaster...

    Energy Savers [EERE]

    Technology Center Green Home 3 - Mount Joy, Pennsylvania Building America Whole-House Solutions for New Homes: Lancaster County Career and Technology Center Green Home 3 - Mount ...

  5. Building America Residential System Research Results: Achieving 30% Whole House Energy Savings Level in Mixed-Humid Climates; January 2006 - December 2006

    SciTech Connect (OSTI)

    Building America Industrialized Housing Partnership; Building Industry Research Alliance; Building Science Consortium; Consortium for Advanced Residential Buildings; Davis Energy Group; IBACOS; National Association of Home Builders Research Center; National Renewable Energy Laboratory

    2006-12-01

    The Building America program conducts the system research required to reduce risks associated with the design and construction of homes that use an average of 30% to 90% less total energy for all residential energy uses than the Building America Research Benchmark, including research on homes that will use zero net energy on annual basis. To measure the program's progress, annual research milestones have been established for five major climate regions in the United States. The system research activities required to reach each milestone take from 3 to 5 years to complete and include research in individual test houses, studies in pre-production prototypes, and research studies with lead builders that provide early examples that the specified energy savings level can be successfully achieved on a production basis. This report summarizes research results for the 30% energy savings level and demonstrates that lead builders can successfully provide 30% homes in the Mixed-Humid Climate Region on a cost-neutral basis.

  6. Building America Residential System Research Results: Achieving 30% Whole House Energy Savings Level in the Hot-Dry and Mixed-Dry Climates

    SciTech Connect (OSTI)

    Building Industry Research Alliance; Building Science Consortium; Consortium for Advanced Residential Buildings; Davis Energy Group; Florida Solar Energy Center; IBACOS; National Association of Home Builders Research Center; National Renewable Energy Laboratory

    2006-01-01

    The Building America program conducts the system research required to reduce risks associated with the design and construction of homes that use an average of 30% to 90% less total energy for all residential energy uses than the Building America Research Benchmark, including research on homes that will use zero net energy on annual basis. To measure the program's progress, annual research milestones have been established for five major climate regions in the United States. The system research activities required to reach each milestone take from 3 to 5 years to complete and include research in individual test houses, studies in pre-production prototypes, and research studies with lead builders that provide early examples that the specified energy savings level can be successfully achieved on a production basis. This report summarizes research results for the 30% energy savings level and demonstrates that lead builders can successfully provide 30% homes in the Hot-Dry/Mixed-Dry Climate Region on a cost neutral basis.

  7. Strategy Guideline. Transitioning HVAC Companies to Whole House Performance Contractors

    SciTech Connect (OSTI)

    Burdick, Arlan

    2012-05-01

    This report describes the findings from research IBACOS conducted related to heating, ventilation, and air conditioning (HVAC) companies who have made the decision to transition to whole house performance contracting (WHPC).

  8. Strategy Guideline: Transitioning HVAC Companies to Whole House Performance Contractors

    SciTech Connect (OSTI)

    Burdick, A.

    2012-05-01

    This report describes the findings from research IBACOS conducted related to heating, ventilation, and air conditioning (HVAC) companies who have made the decision to transition to whole house performance contracting (WHPC).

  9. Building America Whole-House Solutions for New Homes: Imagine...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Imagine Homes, San Antonio, Texas Building America Whole-House Solutions for New Homes: Imagine Homes, San Antonio, Texas Case study of Imagine Homes, who worked with the Building ...

  10. Building America Whole-House Solutions for Existing Homes: Cascade

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Apartments - Deep Energy Multifamily Retrofit (Fact Sheet) | Department of Energy Building America Whole-House Solutions for Existing Homes: Cascade Apartments - Deep Energy Multifamily Retrofit (Fact Sheet) Building America Whole-House Solutions for Existing Homes: Cascade Apartments - Deep Energy Multifamily Retrofit (Fact Sheet) This project implemented energy retrofit improvements in the Cascade multifamily community, which resulted in annual energy cost savings of 22%, improved comfort

  11. Building America Whole-House Solutions for Existing Homes: Passive

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Room-to-Room Air Transfer, Fresno, California (Fact Sheet) | Department of Energy Building America Whole-House Solutions for Existing Homes: Passive Room-to-Room Air Transfer, Fresno, California (Fact Sheet) Building America Whole-House Solutions for Existing Homes: Passive Room-to-Room Air Transfer, Fresno, California (Fact Sheet) In this project, IBACOS, a U.S. Department of Energy Building America team, assessed a strategy for providing conditioned air to bedrooms when the bedroom doors

  12. Measured Whole-House Performance of TaC Studios Test Home

    SciTech Connect (OSTI)

    Butler, T.; Curtis, O.; Stephenson, R.

    2013-12-01

    As part of the NAHB Research Center Industry Partnership, Southface partnered with TaC Studios, an Atlanta-based architecture firm specializing in residential and light commercial design, on the construction of a new test home in Atlanta, GA in the mixed humid climate. This home serves as a residence and home office for the firm's owners, as well as a demonstration of their design approach topotential and current clients. Southface believes the home demonstrates current best practices for the mixed-humid climate, including a building envelope featuring advanced air sealing details and low density spray foam insulation, glazing that exceeds ENERGY STAR requirements, and a high performance heating and cooling system. Construction quality and execution was a high priority for TaCStudios and was ensured by a third party review process. Post-construction testing showed that the project met stated goals for envelope performance, an air infiltration rate of 2.15 ACH50. The homeowners wished to further validate whole house energy savings through the project's involvement with Building America and this long-term monitoring effort. As a Building America test home, this homewas evaluated to detail whole house energy use, end use loads, and the efficiency and operation of the ground source heat pump and associated systems. Given that the home includes many non-typical end use loads including a home office, pool, landscape water feature, and other luxury features not accounted for in Building America modeling tools, these end uses were separately monitored todetermine their impact on overall energy consumption.

  13. Measured Whole-House Performance of TaC Studios Test Home

    SciTech Connect (OSTI)

    Butler, T.; Curtis, O.; Stephenson, R.

    2013-12-01

    As part of the NAHB Research Center Industry Partnership, Southface partnered with TaC Studios, an Atlanta-based architecture firm specializing in residential and light commercial design, on the construction of a new test home in Atlanta, GA, in the mixed humid climate. This home serves as a residence and home office for the firm's owners, as well as a demonstration of their design approach to potential and current clients. Southface believes the home demonstrates current best practices for the mixed-humid climate, including a building envelope featuring advanced air sealing details and low density spray foam insulation, glazing that exceeds ENERGY STAR requirements, and a high performance heating and cooling system. Construction quality and execution was a high priority for TaC Studios and was ensured by a third party review process. Post-construction testing showed that the project met stated goals for envelope performance, an air infiltration rate of 2.15 ACH50. The homeowners wished to further validate whole house energy savings through the project's involvement with Building America and this long-term monitoring effort. As a Building America test home, this home was evaluated to detail whole house energy use, end use loads, and the efficiency and operation of the ground source heat pump and associated systems. Given that the home includes many non-typical end use loads including a home office, pool, landscape water feature, and other luxury features not accounted for in Building America modeling tools, these end uses were separately monitored to determine their impact on overall energy consumption.

  14. Building America Whole-House Solutions for New Homes: Zero Energy...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Building America Whole-House Solutions for New Homes: Zero Energy Ready Home Multifamily Project: Mutual Housing at Spring Lake Building America Whole-House Solutions for New...

  15. Building America Whole-House Solutions for New Homes: Affordable Cold

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Climate Infill Housing with Hybrid Insulation Approach | Department of Energy Affordable Cold Climate Infill Housing with Hybrid Insulation Approach Building America Whole-House Solutions for New Homes: Affordable Cold Climate Infill Housing with Hybrid Insulation Approach The City of Wyandotte started a construction program to engage local builders in constructing energy-efficient homes in existing neighborhoods for less than $100/ft2. Affordable Cold Climate Infill Housing with Hybrid

  16. Whole-House Ventilation | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    systems provide a controlled way of ventilating a home while minimizing energy loss. They reduce the costs of heating ventilated air in the winter by transferring heat...

  17. Building America Whole-House Solutions for Existing Homes: Inverted Attic

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Bulkhead for HVAC Ductwork | Department of Energy Inverted Attic Bulkhead for HVAC Ductwork Building America Whole-House Solutions for Existing Homes: Inverted Attic Bulkhead for HVAC Ductwork This occupied test home received a modified truss system to accommodate ductwork within an inverted insulated bulkhead along the attic floor, which saves energy by placing heating, ventilating, and air-conditioning (HVAC) ductwork within the home's thermal boundary. Inverted Attic Bulkhead for HVAC

  18. Building America Whole-House Solutions for New Homes: Quadrant Homes, Kent,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Washington | Department of Energy Quadrant Homes, Kent, Washington Building America Whole-House Solutions for New Homes: Quadrant Homes, Kent, Washington Case study of Quadrant Homes, who worked with Building America partner WSU Energy Extension to design HERS-65 homes with ducts in conditioned space; 2x6 factory-built walls; and systems-engineered streamlined construction. Quadrant Homes: Kentlake Highlands - Kent, WA (653.91 KB) More Documents & Publications Building America

  19. Building America Whole-House Solutions for Existing Homes: Exterior

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Insulation Pre- and Post-Retrofit, Syracuse, New York | Department of Energy Exterior Insulation Pre- and Post-Retrofit, Syracuse, New York Building America Whole-House Solutions for Existing Homes: Exterior Insulation Pre- and Post-Retrofit, Syracuse, New York IBACOS, in collaboration with GreenHomes America, Inc., was contracted by the New York State Energy Research and Development Authority to research exterior wall insulation solutions for enclosure upgrades. This case study describes

  20. Building America Whole-House Solutions for Existing Homes: Pilot

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Demonstration of Phased Retrofits in Florida Homes - Central and South Florida (Fact Sheet) | Department of Energy Pilot Demonstration of Phased Retrofits in Florida Homes - Central and South Florida (Fact Sheet) Building America Whole-House Solutions for Existing Homes: Pilot Demonstration of Phased Retrofits in Florida Homes - Central and South Florida (Fact Sheet) In this pilot project, the Florida Solar Energy Center and Florida Power and Light are collaborating to retrofit a large

  1. Building America Whole-House Solutions for New Homes: Nexus EnergyHome...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Building America Whole-House Solutions for New Homes: Nexus EnergyHomes - Frederick, Maryland Building America Whole-House Solutions for New Homes: Nexus EnergyHomes - Frederick, ...

  2. Building America Best Practices Series Volume 16: 40% Whole-House...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    6: 40% Whole-House Energy Savings in the Mixed-Humid Climate Building America Best Practices Series Volume 16: 40% Whole-House Energy Savings in the Mixed-Humid Climate This guide ...

  3. Building America Best Practices Series Volume 15: 40% Whole-House...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    5: 40% Whole-House Energy Savings in the Hot-Humid Climate Building America Best Practices Series Volume 15: 40% Whole-House Energy Savings in the Hot-Humid Climate This guide book ...

  4. Building America Whole-House Solutions for Existing Homes: 56th...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Building America Whole-House Solutions for Existing Homes: 56th and Walnut: A Philly Gut Rehab Development Building America Whole-House Solutions for Existing Homes: 56th and ...

  5. Building America Whole-House Solutions for New Homes: EcoVillage...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Whole-House Solutions for New Homes: EcoVillage: A Net Zero Energy Ready Community, Ithaca, New York Building America Whole-House Solutions for New Homes: EcoVillage: A Net Zero...

  6. Building America Whole-House Solutions for New Homes: HVAC Design Strategy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    for a Hot-Humid Production Builder | Department of Energy HVAC Design Strategy for a Hot-Humid Production Builder Building America Whole-House Solutions for New Homes: HVAC Design Strategy for a Hot-Humid Production Builder In this project, BSC worked with the builder to develop a cost-effective design for moving the HVAC system into conditioned space and increase the energy performance of future production houses in anticipation of 2015 IECC codes. HVAC Design Strategy for a Hot-Humid

  7. Going Deep Green: A Whole House Approach-- Lessons Learned

    Broader source: Energy.gov [DOE]

    Provides an overview of the SustainableWorks program based in Puget Sound and Spokane, Washington, including lessons learned.

  8. Building America Whole-House Solutions for New Homes: Shaw Constructio...

    Energy Savers [EERE]

    Shaw Construction, Aspen, Colorado Building America Whole-House Solutions for New Homes: Shaw Construction, Aspen, Colorado Case study of Shaw Construction who worked with Building ...

  9. Building America Whole-House Solutions for New Homes: New Traditions...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    New Traditions, Vancouver, Washington Building America Whole-House Solutions for New Homes: New Traditions, Vancouver, Washington Case study of New Tradition Homes who worked with ...

  10. Building America Whole-House Solutions for New Homes: Low-Cost...

    Energy Savers [EERE]

    Scale, Fresno, California Building America Whole-House Solutions for New Homes: Low-Cost Evaluation of Energy Savings at the Community Scale, Fresno, California In this project, ...

  11. WPN 06-6: Weatherization Whole House Assessment Training Live Feed DVD

    Broader source: Energy.gov [DOE]

    To issue the Weatherization Whole-House Training Assessment Training Live Feed DVD to all grantees for use in the Weatherization Assistance Program (WAP).

  12. Building America Whole-House Solutions for Existing Homes: 56th...

    Energy Savers [EERE]

    America Whole-House Solutions for Existing Homes: 56th and Walnut: A Philly Gut Rehab Development In this project, CPM partnered with the Consortium for Advanced Residential...

  13. Building America Whole-House Solutions for New Homes: CDC Realty...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Building America Whole-House Solutions for New Homes: John Wesley Miller, Tucson, Arizona Building America Best Practices Series: Volume 12. Energy ...

  14. Advanced Controls for Residential Whole-House Ventilation Systems...

    Office of Scientific and Technical Information (OSTI)

    incur an energy penalty on the home via fan power used to drive the airflow, and the additional space-conditioning load associated with heating or cooling the ventilation air. ...

  15. Sealed Crawl Spaces with Integrated Whole-House Ventilation in a Cold Climate

    SciTech Connect (OSTI)

    Zoeller, William; Williamson, James; Puttagunta, Srikanth

    2015-07-01

    One method of code-compliance for crawlspaces is to seal and insulate the crawlspace, rather than venting to the outdoors. However, codes require mechanical ventilation; either via conditioned supply air from the HVAC system, or a continuous exhaust ventilation strategy. As the CARB's building partner, Ithaca Neighborhood Housing Services, intended to use the unvented crawlspace in a recent development, CARB was interested in investigating a hybrid ventilation method that includes the exhaust air from the crawlspace as a portion of an ASHRAE 62.2 compliant whole-house ventilation strategy. This hybrid ventilation method was evaluated through a series of long-term monitoring tests that observed temperature, humidity, and pressure conditions through the home and crawlspace.

  16. Building America Whole-House Solutions for New Homes: HVAC Design...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    HVAC Design Strategy for a Hot-Humid Production Builder Building America Whole-House Solutions for New Homes: HVAC Design Strategy for a Hot-Humid Production Builder In this ...

  17. Building America Whole-House Solutions for New Homes: High-Performance...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    New Homes: High-Performance Ducts in Hot-Dry Climates Building America Whole-House Solutions for New Homes: High-Performance Ducts in Hot-Dry Climates The Alliance for Residential...

  18. Building America Whole-House Solutions for New Homes: Pulte Homes...

    Energy Savers [EERE]

    Pulte Homes and Communities of Del Webb, Las Vegas, Nevada Building America Whole-House Solutions for New Homes: Pulte Homes and Communities of Del Webb, Las Vegas, Nevada Case ...

  19. Building America Whole-House Solutions for New Homes: EcoVillage...

    Energy Savers [EERE]

    Building America Whole-House Solutions for New Homes: EcoVillage: A Net Zero Energy Ready Community, Ithaca, New York Consortium for Advanced Residential Buildings is working with ...

  20. Building America Expert Meeting Report. Transitioning Traditional HVAC Contractors to Whole House Performance Contractors

    SciTech Connect (OSTI)

    Burdick, Arlan

    2011-10-01

    This expert meeting was hosted by the IBACOS Building America research team to determine how HVAC companies can transition from a traditional contractor status to a service provider for whole house energy upgrade contracting.

  1. Building America Best Practices Series Volume 15: 40% Whole-House...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Building America Best Practices Series Volume 15: 40% Whole-House Energy Savings in the Hot-Humid Climate This guide book is a resource to help builders design and construct highly ...

  2. Building America Expert Meeting Report: Transitioning Traditional HVAC Contractors to Whole House Performance Contractors

    SciTech Connect (OSTI)

    Burdick, A.

    2011-10-01

    This report outlines findings resulting from a U.S. Department of Energy Building America expert meeting to determine how HVAC companies can transition from a traditional contractor status to a service provider for whole house energy upgrade contracting. IBACOS has embarked upon a research effort under the Building America Program to understand business impacts and change management strategies for HVAC companies. HVAC companies can implement these strategies in order to quickly transition from a 'traditional' heating and cooling contractor to a service provider for whole house energy upgrade contracting. Due to HVAC service contracts, which allow repeat interaction with homeowners, HVAC companies are ideally positioned in the marketplace to resolve homeowner comfort issues through whole house energy upgrades. There are essentially two primary ways to define the routes of transition for an HVAC contractor taking on whole house performance contracting: (1) Sub-contracting out the shell repair/upgrade work; and (2) Integrating the shell repair/upgrade work into their existing business. IBACOS held an Expert Meeting on the topic of Transitioning Traditional HVAC Contractors to Whole House Performance Contractors on March 29, 2011 in San Francisco, CA. The major objectives of the meeting were to: Review and validate the general business models for traditional HVAC companies and whole house energy upgrade companies Review preliminary findings on the differences between the structure of traditional HVAC Companies and whole house energy upgrade companies Seek industry input on how to structure information so it is relevant and useful for traditional HVAC contractors who are transitioning to becoming whole house energy upgrade contractors Seven industry experts identified by IBACOS participated in the session along with one representative from the National Renewable Energy Laboratory (NREL). The objective of the meeting was to validate the general operational profile of an

  3. Building America Whole-House Solutions for New Homes: Winchester Homes and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Camberley Homes | Department of Energy Whole-House Solutions for New Homes: Winchester Homes and Camberley Homes Building America Whole-House Solutions for New Homes: Winchester Homes and Camberley Homes In this project, Winchester/Camberley Homes worked with Partnership for Home Innovation team to develop and test a new set of high performance homes designs and techniques that could be applied on a production scale, including advanced framing and materials and innovative work scopes. The

  4. Building America Whole-House Solutions for Existing Homes: Applying Best

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Practices to Florida Local Government Retrofit Programs - Central Florida (Fact Sheet) | Department of Energy Building America Whole-House Solutions for Existing Homes: Applying Best Practices to Florida Local Government Retrofit Programs - Central Florida (Fact Sheet) Building America Whole-House Solutions for Existing Homes: Applying Best Practices to Florida Local Government Retrofit Programs - Central Florida (Fact Sheet) In this project, researchers from Building America Partnership for

  5. Building America Whole-House Solutions for New Home: Fort Devens: Cold

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Climate Market-Rate Townhomes | Department of Energy Building America Whole-House Solutions for New Home: Fort Devens: Cold Climate Market-Rate Townhomes Building America Whole-House Solutions for New Home: Fort Devens: Cold Climate Market-Rate Townhomes Twelve townhomes constructed at a decommissioned army base incorporated efficiency upgrades to achieve a HERS Index score of 41 before adding renewables. Fort Devens: Cold Climate Market-Rate Townhomes Targeting HERS Index of 40 - Harvard,

  6. Building America Whole-House Solutions for New Homes: Challenges of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Achieving 2012 IECC Air Sealing Requirements in Multifamily Dwellings, Upstate New York | Department of Energy Whole-House Solutions for New Homes: Challenges of Achieving 2012 IECC Air Sealing Requirements in Multifamily Dwellings, Upstate New York Building America Whole-House Solutions for New Homes: Challenges of Achieving 2012 IECC Air Sealing Requirements in Multifamily Dwellings, Upstate New York In this project, the Consortium for Advanced Residential Buildings team sought to create a

  7. Building America Whole-House Solutions for New Homes: Hood River Passive

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    House - Hood River, Oregon (Fact Sheet) | Department of Energy Building America Whole-House Solutions for New Homes: Hood River Passive House - Hood River, Oregon (Fact Sheet) Building America Whole-House Solutions for New Homes: Hood River Passive House - Hood River, Oregon (Fact Sheet) The Hood River Passive Project incorporates high R-Value assemblies, extremely tight construction, high performance doors and windows, solar thermal DHW, heat recovery ventilation, moveable external shutters

  8. Building America Whole-House Solutions for New Homes: Imagine Homes, San

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Antonio, Texas | Department of Energy Imagine Homes, San Antonio, Texas Building America Whole-House Solutions for New Homes: Imagine Homes, San Antonio, Texas Case study of Imagine Homes, who worked with the Building America research partner IBACOS to build HERS-52 homes with spray foam-insulated attics and central fan-integrated supply ventilation. Imagine Homes: Stillwater Ranch - San Antonio, TX (662.1 KB) More Documents & Publications Building America Whole-House Solutions for New

  9. Building America Whole-House Solutions for New Homes: Nexus EnergyHomes -

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Frederick, Maryland | Department of Energy Building America Whole-House Solutions for New Homes: Nexus EnergyHomes - Frederick, Maryland Building America Whole-House Solutions for New Homes: Nexus EnergyHomes - Frederick, Maryland This new duplex home successfully combines affordability with state-of-the-art efficiency and indoor environmental quality, achieving the highest rating possible under the National Green Building Standard Nexus EnergyHomes - Frederick, Maryland (641.48 KB) More

  10. Building America Whole-House Solutions for New Homes: Transformations, Inc.

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Net Zero Energy Communities (Fact Sheet) | Department of Energy Building America Whole-House Solutions for New Homes: Transformations, Inc. Net Zero Energy Communities (Fact Sheet) Building America Whole-House Solutions for New Homes: Transformations, Inc. Net Zero Energy Communities (Fact Sheet) In 2009, Transformations, Inc. partnered with the Building Science Corporation team to build new net zero energy houses in three developments in Massachusetts that achieve a 45% reduction in energy

  11. Building America Whole-House Solutions for New Homes: Winchester Homes and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Camberly Homes - Silver Spring, Maryland (Fact Sheet) | Department of Energy Building America Whole-House Solutions for New Homes: Winchester Homes and Camberly Homes - Silver Spring, Maryland (Fact Sheet) Building America Whole-House Solutions for New Homes: Winchester Homes and Camberly Homes - Silver Spring, Maryland (Fact Sheet) The Partnership for Home Innovation team worked with the builder to develop a new set of high performance home designs-including advanced wall and HVAC

  12. Buildng America Whole-House Solutions for New Homes: William Ryan Homes,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Tampa, Florida | Department of Energy Buildng America Whole-House Solutions for New Homes: William Ryan Homes, Tampa, Florida Buildng America Whole-House Solutions for New Homes: William Ryan Homes, Tampa, Florida Case study of William Ryan Homes, who worked with Building America research partner CARB to design HERS-65 homes with energy-efficient heat pumps and programmable thermostats with humidity controls, foam-filled concrete block walls, draining house wrap, and airsealed kneewalls.

  13. Building America Whole-House Solutions for New Homes: Affordable...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Infill Housing with Hybrid Insulation Approach The City of Wyandotte started a construction program to engage local builders in constructing energy-efficient homes in ...

  14. Building America Whole-House Solutions for New Homes: Testing...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and heat recovery ventilation (HRV) system; Evaluate the thermal performance and cost benefit of DHPhybrid heating systems in these homes from the perspective of homeowners; ...

  15. Building America Best Practices Series Volume 11. Guide to 40% Whole-House

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Savings in the Marine Climate | Department of Energy Volume 11. Guide to 40% Whole-House Energy Savings in the Marine Climate Building America Best Practices Series Volume 11. Guide to 40% Whole-House Energy Savings in the Marine Climate This Building America Best Practices guide outlines ways to achieve 40% energy savings in the U.S. marine climate. marine_40_guide.pdf (31.96 MB) More Documents & Publications Building America Best Practices, Vol. 12 - Builders Challenge Guide to

  16. Building America Best Practices Series Volume 16: 40% Whole-House Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Savings in the Mixed-Humid Climate | Department of Energy 6: 40% Whole-House Energy Savings in the Mixed-Humid Climate Building America Best Practices Series Volume 16: 40% Whole-House Energy Savings in the Mixed-Humid Climate This guide book is a resource to help builders design and construct highly energy-efficient homes, while addressing building durability, indoor air quality, and occupant health, safety, and comfort. With the measures described in this guide, builders in the mixed-humid

  17. Building America Whole-House Solutions for Existing Home: Retrofitting a

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    1960s Split-Level Cold-Climate Home | Department of Energy Whole-House Solutions for Existing Home: Retrofitting a 1960s Split-Level Cold-Climate Home Building America Whole-House Solutions for Existing Home: Retrofitting a 1960s Split-Level Cold-Climate Home The U.S. Department of Energy Building America team Consortium for Advanced Residential Buildings (CARB) partnered with Preferred Builders and the owners of a 1960s split-level home in Westport, Connecticut, to evaluate and implement a

  18. Building America Whole-House Solutions for Existing Homes: Conway...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    The advanced features included an excellent thermal envelope of closed-cell spray foam and triple-pane windows, ductless heat pumps, solar thermal hot water system, and ...

  19. Building America Whole-House Solutions for New Homes: Evluating...

    Energy Savers [EERE]

    relative ability of this system was considered with respect to relevant Air Conditioning Contractors of America and ASHRAE standards for house temperature uniformity and stability. ...

  20. Building America Whole-House Solutions for Existing Homes: Exterior...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    A "Plug-n-Play" Air Delivery System for Low-Load Homes and Evaluation of a Residential Thermal Comfort Rating Method Building America Efficient Solutions for Existing Homes Case ...

  1. Technology Solutions Case Study: Improving Comfort in Hot-Humid Climates with a Whole-House Dehumidifier

    SciTech Connect (OSTI)

    2013-11-01

    In order to quantify the performance of a combined whole-house dehumidifier (WHD) AC system, researchers from the Consortium of Advanced Residential Buildings (CARB) team monitored the operation of two Lennox AC systems coupled with a Honeywell DH150 TrueDRY whole-house dehumidifier for a six-month period. By using a WHD to control moisture levels (latent cooling) and optimizing a central AC to control temperature (sensible cooling), improvements in comfort can be achieved while reducing utility costs. Indoor comfort for this study was defined as maintaining indoor conditions at below 60% RH and a humidity ratio of 0.012 lbm/lbm while at common dry bulb set point temperatures of 74-80F. In addition to enhanced comfort, controlling moisture to these levels can reduce the risk of other potential issues such as mold growth, pests, and building component degradation. Because a standard AC must also reduce dry bulb air temperature in order to remove moisture, a WHD is typically needed to support these latent loads when sensible heat removal is not desired.

  2. Using Whole-House Field Tests to Empirically Derive Moisture Buffering Model Inputs

    SciTech Connect (OSTI)

    Woods, J.; Winkler, J.; Christensen, D.; Hancock, E.

    2014-08-01

    Building energy simulations can be used to predict a building's interior conditions, along with the energy use associated with keeping these conditions comfortable. These models simulate the loads on the building (e.g., internal gains, envelope heat transfer), determine the operation of the space conditioning equipment, and then calculate the building's temperature and humidity throughout the year. The indoor temperature and humidity are affected not only by the loads and the space conditioning equipment, but also by the capacitance of the building materials, which buffer changes in temperature and humidity. This research developed an empirical method to extract whole-house model inputs for use with a more accurate moisture capacitance model (the effective moisture penetration depth model). The experimental approach was to subject the materials in the house to a square-wave relative humidity profile, measure all of the moisture transfer terms (e.g., infiltration, air conditioner condensate) and calculate the only unmeasured term: the moisture absorption into the materials. After validating the method with laboratory measurements, we performed the tests in a field house. A least-squares fit of an analytical solution to the measured moisture absorption curves was used to determine the three independent model parameters representing the moisture buffering potential of this house and its furnishings. Follow on tests with realistic latent and sensible loads showed good agreement with the derived parameters, especially compared to the commonly-used effective capacitance approach. These results show that the EMPD model, once the inputs are known, is an accurate moisture buffering model.

  3. 40% Whole-House Energy Savings in the Hot-Humid Climate

    SciTech Connect (OSTI)

    none,

    2011-09-01

    This guide book is a resource to help builders design and construct highly energy-efficient homes, while addressing building durability, indoor air quality, and occupant health, safety, and comfort. With the measures described in this guide, builders in the hot-humid climate can build homes that achieve whole house energy savings of 40% over the Building America benchmark (the 1993 Model Energy Code) with no added overall costs for consumers.

  4. 40% Whole-House Energy Savings in the Mixed-Humid Climate

    SciTech Connect (OSTI)

    Baechler, Michael C.; Gilbride, T. L.; Hefty, M. G.; Cole, P. C.; Adams, K.; Butner, R. S.; Ortiz, S. J.; Love, Pat M.

    2011-09-01

    This guide book is a resource to help builders design and construct highly energy-efficient homes, while addressing building durability, indoor air quality, and occupant health, safety, and comfort. With the measures described in this guide, builders in the mixed-humid climate can build homes that achieve whole house energy savings of 40% over the Building America benchmark (the 1993 Model Energy Code) with no added overall costs for consumers.

  5. Building America Whole-House Solutions for Existing Homes: Community-Scale

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Modeling - Southeastern United States | Department of Energy Community-Scale Energy Modeling - Southeastern United States Building America Whole-House Solutions for Existing Homes: Community-Scale Energy Modeling - Southeastern United States Community-scale energy modeling and testing are useful for determining energy conservation measures that will effectively reduce energy use. To that end, IBACOS analyzed pre-retrofit daily utility data to sort homes by energy consumption,

  6. Building America Whole-House Solutions for Existing Homes: Conway Street

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Apartments - Greenfield, Massachusetts | Department of Energy Conway Street Apartments - Greenfield, Massachusetts Building America Whole-House Solutions for Existing Homes: Conway Street Apartments - Greenfield, Massachusetts Through recent research efforts, CARB has been evaluating strategies and technologies that can make dramatic improvements in energy performance in multifamily buildings. In this project, the team helped to transform a 100-year-old empty school building into 12 high

  7. Building America Whole-House Solutions for Existing Homes: Evaluation of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Missed Energy Saving Opportunity Based on Illinois Home Performance Program Field Data: Homeowner Selected Upgrades vs. Cost-Optimized Solutions, Chicago, Illinois | Department of Energy Missed Energy Saving Opportunity Based on Illinois Home Performance Program Field Data: Homeowner Selected Upgrades vs. Cost-Optimized Solutions, Chicago, Illinois Building America Whole-House Solutions for Existing Homes: Evaluation of Missed Energy Saving Opportunity Based on Illinois Home Performance

  8. Building America Whole-House Solutions for Existing Homes: Evaluation of a

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Multifamily Retrofit | Department of Energy a Multifamily Retrofit Building America Whole-House Solutions for Existing Homes: Evaluation of a Multifamily Retrofit A 37-unit apartment complex underwent multiple energy retrofit measures, including attic and wall insulation, low-e windows, and energy-efficient appliances, to comply with the Boulder SmartRegs Ordinance. Evaluation of a Multifamily Retrofit in Climate Zone 5 - Boulder, Colorado (765.88 KB) More Documents & Publications

  9. Building America Whole-House Solutions for Existing Homes: Greenbelt Homes,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Inc. Pilot Retrofit Project - Greenbelt, Maryland | Department of Energy Greenbelt Homes, Inc. Pilot Retrofit Project - Greenbelt, Maryland Building America Whole-House Solutions for Existing Homes: Greenbelt Homes, Inc. Pilot Retrofit Project - Greenbelt, Maryland This multiyear pilot energy efficiency retrofit project was undertaken by Greenbelt Homes, Inc, (GHI) a 1,566 home cooperative of circa 1930 and 1940 homes, to serve as a basis for decision making for the rollout of a

  10. Building America Whole-House Solutions for Existing Homes: Islip Housing

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Authority Energy Efficiency Turnover Protocols, Islip, New York | Department of Energy Islip Housing Authority Energy Efficiency Turnover Protocols, Islip, New York Building America Whole-House Solutions for Existing Homes: Islip Housing Authority Energy Efficiency Turnover Protocols, Islip, New York In this project, ARIES worked with two public housing authorities (PHA) to develop packages of energy efficiency retrofit measures the PHAs can cost effectively implement at the time when units

  11. Building America Whole-House Solutions for Existing Homes: National Grid

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Deep Energy Retrofit Pilot, Massachusetts and Rhode Island (Fact Sheet) | Department of Energy National Grid Deep Energy Retrofit Pilot, Massachusetts and Rhode Island (Fact Sheet) Building America Whole-House Solutions for Existing Homes: National Grid Deep Energy Retrofit Pilot, Massachusetts and Rhode Island (Fact Sheet) Building Science Corporation developed a package of high-efficiency measures for retrofit of 42 homes sponsored by National Grid, resulting in energy use of

  12. Building America Whole-House Solutions for Existing HomesBay Ridge Gardens

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    - Mixed Humid Affordable Multifamily Housing Deep Energy Retrofit, Annapolis, Maryland (Fact Sheet) | Department of Energy HomesBay Ridge Gardens - Mixed Humid Affordable Multifamily Housing Deep Energy Retrofit, Annapolis, Maryland (Fact Sheet) Building America Whole-House Solutions for Existing HomesBay Ridge Gardens - Mixed Humid Affordable Multifamily Housing Deep Energy Retrofit, Annapolis, Maryland (Fact Sheet) Approximately 43% energy savings are achieved in a 1970s multifamily

  13. Building America Whole-House Solutions for New Homes: A Production

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Builder's Passive House, Denver, Colorado (Midtown | Department of Energy A Production Builder's Passive House, Denver, Colorado (Midtown Building America Whole-House Solutions for New Homes: A Production Builder's Passive House, Denver, Colorado (Midtown Brookfield Home's first project is in a community called Midtown in Denver, Colorado, in which the builder took on the challenge of increased energy efficiency by creating a Passive House-certified model home. Brookfield worked with the

  14. Building America Whole-House Solutions for New Homes: Artistic Homes,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Albuquerque, New Mexico | Department of Energy Artistic Homes, Albuquerque, New Mexico Building America Whole-House Solutions for New Homes: Artistic Homes, Albuquerque, New Mexico Case study of Artistic Homes who worked with Building America research partners Building Science Corporation and BIRA to design homes that achieve HERS <60 without PV or zero net energy with PV with ducts in dropped ceilings, R-50 attic insulation; HRVs with HEPA filters; and extensive air sealing. Artistic

  15. Building America Whole-House Solutions for New Homes: Devoted Builders,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    LLC, Pasco, Washington | Department of Energy Devoted Builders, LLC, Pasco, Washington Building America Whole-House Solutions for New Homes: Devoted Builders, LLC, Pasco, Washington Case study of Devoted Builders who worked with Building America research partner WSU Extension Energy Office to design HERS-54 duplexes with ICF walls, high-efficiency mini-split heat pumps, ERVs, and a spray-foam plus blown cellulose covered ceiling deck. Devoted Builders, LLC. - Pasco, WA (664.44 KB) More

  16. Building America Whole-House Solutions for New Homes: Green Coast

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Enterprises, New Orleans, Louisiana | Department of Energy Green Coast Enterprises, New Orleans, Louisiana Building America Whole-House Solutions for New Homes: Green Coast Enterprises, New Orleans, Louisiana Case study of Green Coast Enterprises, who worked with Building America research partner Building Science Corporation to build moisture- and flood-resistant HERS- 65 affordable homes on pier foundations, with borate pressure-treated lumber, wind-resistant OSB sheathing, hurricane

  17. Building America Whole-House Solutions for New Homes: Grupe, Rocklin,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    California | Department of Energy Grupe, Rocklin, California Building America Whole-House Solutions for New Homes: Grupe, Rocklin, California Case Study of Grupe who worked with Building America research partner Davis Energy Group to design HERS-54 homes that included PV roof tiles, SmartVent night ventilation cooling; and FreshVent continuous ventilation. Grupe: Carsten Crossings - Rocklin, CA (638.75 KB) More Documents & Publications Outside Air Ventilation Controller - Building

  18. Building America Whole-House Solutions for New Homes: Insight Homes,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Seaford, Delaware | Department of Energy Insight Homes, Seaford, Delaware Building America Whole-House Solutions for New Homes: Insight Homes, Seaford, Delaware Case study of Insight Homes, who worked with the Building America research partner IBACOS to design HERS-49 homes with high-efficiency HVAC, ducts in insulated crawl spaces, raised heel trusses, dehumidifiers, and central manifold plumbing. Insight Homes: Deep Creek - Seaford, Delaware (651.43 KB) More Documents & Publications

  19. Building America Whole-House Solutions for New Homes: Lancaster County

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Career and Technology Center Green Home 3 - Mount Joy, Pennsylvania | Department of Energy Lancaster County Career and Technology Center Green Home 3 - Mount Joy, Pennsylvania Building America Whole-House Solutions for New Homes: Lancaster County Career and Technology Center Green Home 3 - Mount Joy, Pennsylvania This case study describes a unique vocational program at Lancaster County Career Technology Center in Mount Joy, PA, where high school students are gaining hands-on construction

  20. Building America Whole-House Solutions for New Homes: Low-Cost Evaluation

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Energy Savings at the Community Scale, Fresno, California | Department of Energy Low-Cost Evaluation of Energy Savings at the Community Scale, Fresno, California Building America Whole-House Solutions for New Homes: Low-Cost Evaluation of Energy Savings at the Community Scale, Fresno, California In this project, U.S. Department of Energy Building America research team IBACOS partnered with builder Wathen Castanos Hybrid Homes to develop a simple and low-cost methodology by which

  1. Building America Whole-House Solutions for New Homes: Meeting DOE Challenge

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Homes Program Certification | Department of Energy Meeting DOE Challenge Homes Program Certification Building America Whole-House Solutions for New Homes: Meeting DOE Challenge Homes Program Certification Three production home builders-K. Hovnanian Homes, David Weekley Homes, and Transformations, Inc.-partnered with Building America team Building Science Corporation to evaluate the certification of five test homes to the new DOE Challenge Home program performance standard (now DOE Zero

  2. Building America Whole-House Solutions for New Homes: New Traditions,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Vancouver, Washington | Department of Energy New Traditions, Vancouver, Washington Building America Whole-House Solutions for New Homes: New Traditions, Vancouver, Washington Case study of New Tradition Homes who worked with Building America partner WSU Energy Extension to design HERS-65 homes with ducts in conditioned space, site grading and drain piping, and high-efficiency HVAC. New Tradition Homes: Landover Commons - Vancouver, WA (653.77 KB) More Documents & Publications Low-Cost

  3. Building America Whole-House Solutions for New Homes: Northwest Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Efficient Manufactured Housing Program High-Performance Test Homes | Department of Energy Northwest Energy Efficient Manufactured Housing Program High-Performance Test Homes Building America Whole-House Solutions for New Homes: Northwest Energy Efficient Manufactured Housing Program High-Performance Test Homes This project represents the third phase of a multi-year effort to develop and bring to market a High-Performance Manufactured Home. In this project, the Northwest Energy Efficient

  4. Building America Whole-House Solutions for New Homes: Rural Development,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Inc., Greenfield, Massachusetts | Department of Energy Rural Development, Inc., Greenfield, Massachusetts Building America Whole-House Solutions for New Homes: Rural Development, Inc., Greenfield, Massachusetts Case study of Rural Development Inc. who worked with Building America research partner CARB to design affordable HERS-8 homes (60 w/o PV), with double-stud walls heavy insulation, low-load sealed-combustion gas space heaters, triple-pane windows, solar water heating, and PV. Rural

  5. Building America Whole-House Solutions for New Homes: S & A Homes,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Pittsburgh, Pennsylvania | Department of Energy S & A Homes, Pittsburgh, Pennsylvania Building America Whole-House Solutions for New Homes: S & A Homes, Pittsburgh, Pennsylvania Case study of S&A Homes who worked with Building America research partner IBACOS to design urban infill HERS-51 homes with compact duct layout in conditioned space, foam insulated precast concrete foundations, high-efficiency HVAC, and tankless water heaters. S&A Homes: East Liberty - Pittsburgh, PA

  6. Building America Whole-House Solutions for New Homes: Shaw Construction,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Aspen, Colorado | Department of Energy Shaw Construction, Aspen, Colorado Building America Whole-House Solutions for New Homes: Shaw Construction, Aspen, Colorado Case study of Shaw Construction who worked with Building America research partner Building Science Corporation to design affordable HERS-54 townhouses with central solar radiator space heating, PV, R-28 closed-cell spray foam under slab and R-26 in advanced framed walls, and rigid polyiso on inside of basement walls. Shaw

  7. Building America Whole-House Solutions for New Homes: Singer Village - A

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Cold Climate Zero Energy Ready Home, Derby, Connecticut | Department of Energy Singer Village - A Cold Climate Zero Energy Ready Home, Derby, Connecticut Building America Whole-House Solutions for New Homes: Singer Village - A Cold Climate Zero Energy Ready Home, Derby, Connecticut After progressively incorporating ENERGY STAR for Homes Versions 1, 2, and 3 into its standard practices over the years, builder Brookside Development was seeking to build an even more sustainable product that

  8. Building America Whole-House Solutions for New Homes: Testing Ductless Heat

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Pumps in High-Performance Affordable Housing, The Woods at Golden Given, Tacoma,Washington | Department of Energy Testing Ductless Heat Pumps in High-Performance Affordable Housing, The Woods at Golden Given, Tacoma,Washington Building America Whole-House Solutions for New Homes: Testing Ductless Heat Pumps in High-Performance Affordable Housing, The Woods at Golden Given, Tacoma,Washington The Woods is a 30-home, high- performance, energy efficient sustainable community built by Habitat for

  9. Building America Whole-House Solutions for New Homes: The Performance

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    House: A Cold Climate Challenge Home, Old Greenwich, Connecticut (Fact Sheet) | Department of Energy The Performance House: A Cold Climate Challenge Home, Old Greenwich, Connecticut (Fact Sheet) Building America Whole-House Solutions for New Homes: The Performance House: A Cold Climate Challenge Home, Old Greenwich, Connecticut (Fact Sheet) The first Challenge Home built in New England features cool-roof shingles, HERS 20-42, and walls densely packed with blown fiberglass. The Performance

  10. Building America Whole-House Solutions for New Homes: Tindall Homes,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Columbus, New Jersey | Department of Energy Tindall Homes, Columbus, New Jersey Building America Whole-House Solutions for New Homes: Tindall Homes, Columbus, New Jersey Case study of Tindall Homes who worked with Building America research team IBACOS to build 20 HERS-58 homes with R-49 mixed attic insulation, poly-iso foam in advanced framed walls, precast concrete basement walls with rigid foam, tight airsealing, and HRVs Tindall Homes: The Legends at Mansfield - Columbus, NJ (666.77 KB)

  11. Building America Whole-House Solutions for New Homes: Tom Walsh & Co.,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Portland, Oregon | Department of Energy Tom Walsh & Co., Portland, Oregon Building America Whole-House Solutions for New Homes: Tom Walsh & Co., Portland, Oregon Case study of Tom Walsh & Co., who worked with Building America research partner BIRA to design HERS 59 homes with ducts in conditioned space in dropped ceiling soffits, extensive air sealing, and extensve site water management. Tom Walsh & Co.: New Columbia - Portland, Oregon (651.11 KB) More Documents &

  12. Building America Whole-House Solutions for New Homes: Urbane Homes,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Louisville, Kentucky | Department of Energy Urbane Homes, Louisville, Kentucky Building America Whole-House Solutions for New Homes: Urbane Homes, Louisville, Kentucky Case study of Urbane Homes who worked with Building America research partner NAHBRC to build HERS-57 homes with rigid foam insulated slabs and foundation walls, advanced framed walls, high-efficiency heat pumps, and ducts in conditioned space. Urbane Homes - Louisville, KY (668.24 KB) More Documents & Publications High

  13. Building America Whole-House Solutions for New Homes: Zero Energy Ready

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Home Multifamily Project: Mutual Housing at Spring Lake | Department of Energy Zero Energy Ready Home Multifamily Project: Mutual Housing at Spring Lake Building America Whole-House Solutions for New Homes: Zero Energy Ready Home Multifamily Project: Mutual Housing at Spring Lake The 62-until Spring Lake project developed by Mutual Housing California is the first multifamily project nationwide to be certified under DOE's Zero Energy Ready Home program. Zero Energy Ready Home Multifamily

  14. Building America Whole-House Solutions for New and Existing Homes:

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Evaluating Energy Savings in All-Electric Public Housing in the Pacific Northwest (Fact sheet) | Department of Energy and Existing Homes: Evaluating Energy Savings in All-Electric Public Housing in the Pacific Northwest (Fact sheet) Building America Whole-House Solutions for New and Existing Homes: Evaluating Energy Savings in All-Electric Public Housing in the Pacific Northwest (Fact sheet) This project analyzes the cost effectiveness of energy-saving measures installed by a large public

  15. New Whole-House Solutions Case Study: Low-Cost Evaluation of Energy Savings at the Community Scale - Fresno, California

    SciTech Connect (OSTI)

    2014-10-01

    In this project, IBACOS partnered with builder Wathen-Castanos Hybrid Homes to develop a simple and low-cost methodology by which community-scale energy savings can be evaluated based on results at the occupied test house level.Research focused on the builder and trade implementation of a whole-house systems integrated measures package and the actual utility usage in the houses at the community scale of production. Five occupants participated in this community-scale research by providing utility bills and information on occupancy and miscellaneous gas and electric appliance use for their houses. IBACOS used these utility data and background information to analyze the actual energy performance of the houses. Verification with measured data is an important component in predictive energy modeling. The actual utility bill readings were compared to projected energy consumption using BEopt with actual weather and thermostat set points for normalization.

  16. Improving Comfort in Hot-Humid Climates with a Whole-House Dehumidifier, Windermere, Florida (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-11-01

    Maintaining comfort in a home can be challenging in hot-humid climates. At the common summer temperature set point of 75 degrees F, the perceived air temperature can vary by 11 degrees F because higher indoor humidity reduces comfort. Often the air conditioner (AC) thermostat set point is lower than the desirable cooling level to try to increase moisture removal so that the interior air is not humid or "muggy." However, this method is not always effective in maintaining indoor relative humidity (RH) or comfort. In order to quantify the performance of a combined whole-house dehumidifier (WHD) AC system, researchers from the U.S. Department of Energy's Building America team Consortium of Advanced Residential Buildings (CARB) monitored the operation of two Lennox AC systems coupled with a Honeywell DH150 TrueDRY whole-house dehumidifier for a six-month period. By using a WHD to control moisture levels (latent cooling) and optimizing a central AC to control temperature (sensible cooling), improvements in comfort can be achieved while reducing utility costs. Indoor comfort for this study was defined as maintaining indoor conditions at below 60% RH and a humidity ratio of 0.012 lbm/lbm while at common dry bulb set point temperatures of 74 degrees -80 degrees F. In addition to enhanced comfort, controlling moisture to these levels can reduce the risk of other potential issues such as mold growth, pests, and building component degradation. Because a standard AC must also reduce dry bulb air temperature in order to remove moisture, a WHD is typically needed to support these latent loads when sensible heat removal is not desired.

  17. Builders Challenge Guide to 40% Whole-House Energy Savings in the Cold and Very Cold Climate – Volume 12

    SciTech Connect (OSTI)

    Pacific Northwest National Laboratory

    2011-02-01

    This document describes measures builders can use to construct homes that have whole-house energy savings of 40% in the cold and very cold climate region of the United States.

  18. Building America Technology Solutions Case Study: Sealed Crawled Spaces with Integrated Whole-House Ventilation in a Cold Climate

    Broader source: Energy.gov [DOE]

    The Building America team Consortium for Advanced Residential Buildings (CARB) investigated a hybrid ventilation method that included the exhaust air from the crawl space as part of an ASHRAE 62.2-compliant whole-house ventilation strategy.

  19. Building America Whole-House Solutions for New Homes: Exterior Rigid Foam

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Insulation at the Edge of a Slab Foundation, Fresno, California | Department of Energy Exterior Rigid Foam Insulation at the Edge of a Slab Foundation, Fresno, California Building America Whole-House Solutions for New Homes: Exterior Rigid Foam Insulation at the Edge of a Slab Foundation, Fresno, California Exterior rigid foam insulation at the edge of the slab foundation was a unique feature for this low-load, unoccupied test house in a hot-dry climate and maybe more appropriate for

  20. Building America Whole-House Solutions for New Homes: New Town Builders'

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Power of Zero Energy Center | Department of Energy New Town Builders' Power of Zero Energy Center Building America Whole-House Solutions for New Homes: New Town Builders' Power of Zero Energy Center New Town Builders, a builder of energy efficient homes in Denver, Colorado, offers a zero energy option for all the homes it builds. To attract a wide range of potential home buyers to its energy efficient homes, New Town Builders created a "Power of Zero Energy Center" linked to its

  1. Building America Whole-House Solutions for New Homes: Pulte Homes and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Communities of Del Webb, Las Vegas, Nevada | Department of Energy Pulte Homes and Communities of Del Webb, Las Vegas, Nevada Building America Whole-House Solutions for New Homes: Pulte Homes and Communities of Del Webb, Las Vegas, Nevada Case study of Pulte Homes-Las Vegas Division who teamed with Building America team Building Science Corporation to design HERS-54 homes with high-efficiency HVAC with ducts in conditioned space, jump ducts, and a fresh air intake; advanced framed walls;

  2. Building America Whole-House Solutions for New Homes: Tommy Williams Homes,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Gainesville, Florida | Department of Energy Tommy Williams Homes, Gainesville, Florida Building America Whole-House Solutions for New Homes: Tommy Williams Homes, Gainesville, Florida Case study of Tommy Williams Homes who partnered with Building America to build HERS-58 homes with foam gaskets at sill and top plates, fresh air intakes, SEER 16/HSPF 9.5 heat pumps, and tight air sealing of 2.7 ACH50. Tommy Williams Homes: Longleaf Village & Belmont - Gainesville, FL (671.55 KB) More

  3. New Whole-House Solutions Case Study: The Performance House: A Cold Climate Challenge Home, Old Greenwich, Connecticut

    SciTech Connect (OSTI)

    2013-11-01

    By working with builder partners on test homes, researchers from the U.S. Department of Energys Building America program can vet whole-house building strategies and avoid potential unintended consequences of implementing untested solution packages on a production scale. To support this research, Building America team Consortium for Advanced Residential Buildings (CARB) partnered with Preferred Builders Inc. on a high-performance test home in Old Greenwich, Connecticut. The philosophy and science behind the 2,700 ft2 Performance House was based on the premise that homes should be safe, healthy, comfortable, durable, efficient, and adaptable to the needs of homeowners. The technologies and strategies used in the Performance House were best practices rather than cutting edge, with a focus on simplicity in construction, maintenance, and operation. Achieving 30% source energy savings compared with a home built to the 2009 International Energy Conservation Code in the cold climate zone requires that nearly all components and systems be optimized. Careful planning and design are critical. The end result was a DOE Challenge Home that achieved a Home Energy Rating System (HERS) Index Score of 20 (43 without photovoltaics [PV]).

  4. Building America Case Study: Sealed Crawl Spaces with Integrated Whole-House Ventilation in a Cold Climate, Ithaca, New York

    SciTech Connect (OSTI)

    2015-09-01

    "9One method of code-compliance for crawlspaces is to seal and insulate the crawlspace, rather than venting to the outdoors. However, codes require mechanical ventilation; either via conditioned supply air from the HVAC system, or a continuous exhaust ventilation strategy. As the CARB's building partner, Ithaca Neighborhood Housing Services, intended to use the unvented crawlspace in a recent development, CARB was interested in investigating a hybrid ventilation method that includes the exhaust air from the crawlspace as a portion of an ASHRAE 62.2 compliant whole-house ventilation strategy. This hybrid ventilation method was evaluated through a series of long-term monitoring tests that observed temperature, humidity, and pressure conditions through the home and crawlspace. Additionally, CARB worked with NREL to perform multi-point tracer gas testing on six separate ventilation strategies - varying portions of 62.2 required flow supplied by the crawlspace fan and an upstairs bathroom fan. The intent of the tracer gas testing was to identify effective Reciprocal Age of Air (RAoA), which is equivalent to the air change rate in well-mixed zones, for each strategy while characterizing localized infiltration rates in several areas of the home.

  5. Building America Best Practices Series Volume 15: 40% Whole-House Energy Savings in the Hot-Humid Climate

    Office of Energy Efficiency and Renewable Energy (EERE)

    This guide book is a resource to help builders design and construct highly energy-efficient homes, while addressing building durability, indoor air quality, and occupant health, safety, and comfort. With the measures described in this guide, builders in the hot-humid climate can build homes that achieve whole house energy savings of 40% over the Building America benchmark (the 1993 Model Energy Code) with no added overall costs for consumers.

  6. Technology Solutions Case Study: Sealed Crawl Space with Integrated Whole-House Ventilation in a Cold Climate

    SciTech Connect (OSTI)

    W. Zoeller, J. Williamson, and S. Puttagunta

    2015-09-01

    The Building America team Consortium for Advanced Residential Buildings (CARB) investigated a hybrid ventilation method that included the exhaust air from the crawl space as part of an ASHRAE 62.2-compliant whole-house ventilation strategy. The CARB team evaluated this hybrid ventilation method through long-term field monitoring of temperature, humidity, and pressure conditions within the crawl spaces of two homes (one occupied and one unoccupied) in New York state.

  7. Building America Best Practices Series: Builders Challenge Guide to 40% Whole-House Energy Savings in the Marine Climate (Volume 11)

    SciTech Connect (OSTI)

    Pacific Northwest National Laboratory

    2010-09-01

    With the measures described in this guide, builders in the marine climate can build homes that have whole-house energy savings of 40% over the Building America benchmark with no added overall costs for consumers.

  8. Whole-House Design and Commissioning in the Project Home Again Hot-Humid New Construction Community

    SciTech Connect (OSTI)

    Kerrigan, Philip

    2012-09-01

    Building Science Corporation has been working with Project Home Again since 2008 and has consulted on the design of around 100 affordable, energy efficient new construction homes for victims of hurricanes Katrina and Rita. This report details the effort on the final two phases of the project: Phases V and VI, which resulted in a total of 25 homes constructed in 2011. The goal of this project was to develop and implement an energy efficiency package that will achieve at least 20% whole house source energy savings improvement over the B10 Benchmark.

  9. Whole-House Design and Commissioning in the Project Home Again Hot-Humid New Construction Community

    SciTech Connect (OSTI)

    Kerrigan, P.

    2012-09-01

    BSC has been working with Project Home Again since 2008 and has consulted on the design of around 100 affordable, energy efficient new construction homes for victims of hurricanes Katrina and Rita. This report details the effort on the final two phases of the project: Phases V and VI which resulted in a total of 25 homes constructed in 2011. The goal of this project was to develop and implement an energy efficiency package that will achieve at least 20% whole house source energy savings improvement over the B10 Benchmark.

  10. New Whole-House Solutions Case Study: Lancaster County Career and Technology Center Green Home 3 - Mount Joy, Pennsylvania

    SciTech Connect (OSTI)

    2014-12-01

    This case study describes a unique vocational program at Lancaster County Career Technology Center in Mount Joy, PA, where high school students are gaining hands-on construction experience in building high performance homes with help from Building America team, Home Innovation Research Labs. This collaboration resulted in the Green Home 3, the third in a series of high performance homes for Apprentice Green. As one of LCCTC’s key educational strategies for gaining practical experience, students are involved in building real houses that incorporate state-of-the-art energy efficiency and green technologies. With two homes already completed, the Green Home 3 achieved a 44% whole-house energy savings over the Building America New Construction B10 Benchmark, DOE Zero Energy Ready Home (formerly Challenge Home) certification, and National Green Building Standard Gold-level certification.

  11. New Whole-House Solutions Case Study: Evaluating Through-Wall Air Transfer Fans, Pittsburgh, Pennsylvania

    SciTech Connect (OSTI)

    2014-10-01

    In this project, Building America team IBACOS performed field testing in a new construction unoccupied test house in Pittsburgh, Pennsylvania, to evaluate heating, ventilating, and air conditioning (HVAC) distribution systems during heating, cooling, and midseason conditions. The team evaluated a market-available through-wall air transfer fan system that provides air to the bedrooms.The relative ability of this system was considered with respect to relevant Air Conditioning Contractors of America and ASHRAE standards for house temperature uniformity and stability.

  12. Building America Whole-House Solutions for New Homes: John Wesley...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    John Wesley Miller Companies: Armory Park Del Sol - Tucson, AZ (715.71 KB) More Documents & Publications High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems; ...

  13. New Whole-House Solutions Case Study: Hydronic Heating Coil Versus Propane Furnace, Rehoboth Beach, Delaware

    SciTech Connect (OSTI)

    2014-01-01

    In this project involving two homes, the IBACOS team evaluated the performance of the two space conditioning systems and the modeled efficiency of the two tankless domestic hot water systems relative to actual occupant use. Each house was built by Insight Homes and is 1,715-ft2 with a single story, three bedrooms, two bathrooms, and the heating, ventilation, and air conditioning systems and ductwork located in conditioned crawlspaces. The standard house, which the builder offers as its standard production house, uses an air source heat pump (ASHP) with supplemental propane furnace heating. The Building America test house uses the same ASHP unit with supplemental heat provided by the DHW heater (a combined DHW and hydronic heating system, where the hydronic heating element is in the air handler).

  14. New Whole-House Solutions Case Study: CDC Realty Inc., Tucson, AZ

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    CDC Realty, Inc., of Tucson, Arizona, approached U.S. Department of Energy Building America partner Building Science Corporation (BSC) for guidance in building a community of compact, single-story homes aimed at first-time home buyers and retirees who could really benefit from the cost savings of energy-efficient homes. The 1,500 ft 2 homes are a simple, slab-on-grade design with a flat roof and 12-foot ceilings in the great room and kitchen and sloped 9-foot ceilings throughout the rest of the

  15. Existing Whole-House Solutions Case Study: Conway Street Apartments - Greenfield, Massachusetts

    SciTech Connect (OSTI)

    2014-12-01

    Through recent research efforts, CARB has been evaluating strategies and technologies that can make dramatic improvements in energy performance in multifamily buildings. In this project, the team helped to transform a 100-year-old empty school building into 12 high performance apartments with low energy costs. The advanced features included an excellent thermal envelope of closed-cell spray foam and triple-pane windows, ductless heat pumps, solar thermal hot water system, and photovoltaic system.

  16. New Whole-House Solutions Case Study: Winchester Homes and Camberly Homes

    SciTech Connect (OSTI)

    2014-02-01

    The Partnership for Home Innovation team worked with the builder to develop a new set of high performance home designs—including advanced wall and HVAC systems—that could be applicable on a production scale. The new home designs are to be constructed in the mixed humid climate zone and could eventually apply to all of the builder's home designs to meet or exceed future energy codes or performance-based programs. However, the builder recognized that the combination of new wall framing designs and materials, higher levels of insulation in the wall cavity, and more detailed air sealing to achieve lower infiltration rates changes the moisture characteristics of the wall system. In order to ensure long term durability and repeatable successful implementation with few call-backs, this report demonstrates through measured data that the wall system functions as a dynamic system, responding to changing interior and outdoor environmental conditions within recognized limits of the materials that make up the wall system. A similar investigation was made with respect to the complete redesign of the heating, cooling, air distribution, and ventilation systems intended to optimize the equipment size and configuration to significantly improve efficiency while maintaining indoor comfort. Recognizing the need to demonstrate the benefits of these efficiency features, the builder offered a new house model to serve as a test case to develop framing designs, evaluate material selections and installation requirements, changes to work scopes and contractor learning curves, as well as to compare theoretical performance characteristics with measured results.

  17. Whole-House Solutions Case Study: Sunnyvale Marine Climate Deep Retrofit

    Broader source: Energy.gov [DOE]

    The Alliance for Residential Building Innovation (ARBI) and Allen Gilliland of One Sky Homes collaborated on a marine climate retrofit project designed to meet both Passive House (PH) and Building America program standards. The scope included sealing, installing wall, roof and floor insulation (previously lacking), replacing windows, and upgrading the heating and cooling system.

  18. Existing Whole-House Case Study: Sunnyvale Marine Climate Deep Retrofit - Sunnyvale, California

    SciTech Connect (OSTI)

    2015-03-01

    In this project, the Building America team Alliance for Residential Building Innovation and Allen Gilliland of One Sky Homes collaborated on a marine climate retrofit project designed to meet both Passive House and Building America program standards. The scope included sealing, installing wall, roof and floor insulation (previously lacking), replacing windows, and upgrading the heating and cooling system.

  19. Sealed Crawl Spaces with Integrated Whole-House Ventilation in a Cold Climate

    SciTech Connect (OSTI)

    Zoeller, William; Williamson, James; Puttafunta, Srikanth

    2015-07-30

    One method of code-compliance for crawlspaces is to seal and insulate the crawlspace, rather than venting to the outdoors. However, codes require mechanical ventilation; either via conditioned supply air from the HVAC system, or a continuous exhaust ventilation strategy. As the CARB's building partner, Ithaca Neighborhood Housing Services, intended to use the unvented crawlspace in a recent

  20. New Whole-House Solutions Case Study: Hood River Passive House

    SciTech Connect (OSTI)

    2014-02-01

    The Hood River Passive Project was developed by Root Design Build of Hood River Oregon using the Passive House Planning Package (PHPP) to meet all of the requirements for certification under the European Passive House standards. The Passive House design approach has been gaining momentum among residential designers for custom homes and BEopt modeling indicates that these designs may actually exceed the goal of the U.S. Department of Energy's (DOE) Building America program to "reduce home energy use by 30%-50%" (compared to 2009 energy codes for new homes). This report documents the short term test results of the Shift House and compares the results of PHPP and BEopt modeling of the project. The design includes high R-Value assemblies, extremely tight construction, high performance doors and windows, solar thermal DHW, heat recovery ventilation, moveable external shutters and a high performance ductless mini-split heat pump. Cost analysis indicates that many of the measures implemented in this project did not meet the BA standard for cost neutrality. The ductless mini-split heat pump, lighting and advanced air leakage control were the most cost effective measures. The future challenge will be to value engineer the performance levels indicated here in modeling using production based practices at a significantly lower cost.

  1. Advanced Envelope Research for Factory Built Housing, Phase 3 -- Whole-House Prototyping

    SciTech Connect (OSTI)

    Levy, E.; Mullens, M.; Rath, P.

    2014-04-01

    The Advanced Envelope Research effort will provide factory homebuilders with high performance, cost-effective envelope designs that can be effectively integrated into the plant production process while meeting the thermal requirements of the 2012 IECC standards. Given the affordable nature of manufactured homes, impact on first cost is a major consideration in developing new envelope technologies. This work is part of a multi-phase effort. Phase 1 identified seven envelope technologies and provided a preliminary assessment of three methods for building high performance walls. Phase 2 focused on developing viable product designs, manufacturing strategies, addressing code and structural issues, and cost analysis of the three selected options. An industry advisory committee helped narrow the research focus to perfecting a stud wall design with exterior continuous insulation (CI). Phase 3, completed in two stages, continued the design development effort, exploring and evaluating a range or methods for applying CI to factory built homes. The scope also included material selection, manufacturing and cost analysis, and prototyping and testing. During this phase, a home was built with CI, evaluated, and placed in service. The experience of building a mock up wall section with CI and then constructing on line a prototype home resolved important concerns about how to integrate the material into the production process. First steps were taken toward finding least expensive approaches for incorporating CI in standard factory building practices and a preliminary assessment suggested that even at this early stage the technology is attractive when viewed from a life cycle cost perspective.

  2. Advanced Envelope Research for Factory Built Housing, Phase 3. Whole-House Prototyping

    SciTech Connect (OSTI)

    Levy, E.; Mullens, M.; Rath, P.

    2014-04-01

    The Advanced Envelope Research effort will provide factory homebuilders with high performance, cost-effective envelope designs that can be effectively integrated into the plant production process while meeting the thermal requirements of the 2012 IECC standards. This work is part of a multiphase effort. Phase 1 identified seven envelope technologies and provided a preliminary assessment of three methods for building high performance walls. Phase 2 focused on developing viable product designs, manufacturing strategies, addressing code and structural issues, and cost analysis of the three selected options. An industry advisory committee helped narrow the research focus to perfecting a stud wall design with exterior continuous insulation (CI). This report describes Phase 3, which was completed in two stages and continued the design development effort, exploring and evaluating a range or methods for applying CI to factory built homes. The scope also included material selection, manufacturing and cost analysis, and prototyping and testing. During this phase, a home was built with CI, evaluated, and placed in service. The experience of building a mock up wall section with CI and then constructing on line a prototype home resolved important concerns about how to integrate the material into the production process. First steps were taken toward finding least expensive approaches for incorporating CI in standard factory building practices and a preliminary assessment suggested that even at this early stage the technology is attractive when viewed from a life cycle cost perspective.

  3. Vol. 9: Building America Best Practices Series- Builders Challenge Guide to 40% Whole-House Energy Savings in the Hot-Dry and Mixed-Dry Climates

    Broader source: Energy.gov [DOE]

    This document is the ninth in a series of guide books to help builders construct energy efficient buildings; this particular guide helps builders in the hot-dry and mixed-dry climates can achieve homes that have whole house energy savings of 40% over the Building America benchmark.

  4. Vol. 9: Building America Best Practices Series- Builders Challenge Guide to 40% Whole-House Energy Savings in the Hot-Dry and Mixed-Dry Climates

    Broader source: Energy.gov [DOE]

    This document is the ninth in a series of guide books to help builders construct energy efficient buildings this particular guide helps builders in the hot-dry and mixed-dry climates can achieve homes that have whole house energy savings of 40% over the Building America benchmark.

  5. Performance of a Hot-Dry Climate Whole-House Retrofit

    SciTech Connect (OSTI)

    Weitzel, E.; German, A.; Porse, E.

    2014-06-01

    The Stockton house retrofit is a two-story tudor style single family deep retrofit in the hot-dry climate of Stockton, CA. The home is representative of a deep retrofit option of the scaled home energy upgrade packages offered to targeted neighborhoods under the pilot Large-Scale Retrofit Program (LSRP) administered by the Alliance for Residential Building Innovation (ARBI). Deep retrofit packages expand on the standard package by adding HVAC, water heater and window upgrades to the ducting, attic and floor insulation, domestic hot water insulation, envelope sealing, lighting and ventilation upgrades. Site energy savings with the deep retrofit were 23% compared to the pre-retrofit case, and 15% higher than the savings estimated for the standard retrofit package. Energy savings were largely a result of the water heater upgrade, and a combination of the envelope sealing, insulation and HVAC upgrade. The HVAC system was of higher efficiency than the building code standard. Overall the financed retrofit would have been more cost effective had a less expensive HVAC system been selected and barriers to wall insulation remedied. The homeowner experienced improved comfort throughout the monitored period and was satisfied with the resulting utility bill savings.

  6. Performance of a Hot-Dry Climate Whole-House Retrofit

    SciTech Connect (OSTI)

    Weitzel, E.; German, A.; Porse, E.

    2014-06-01

    The Stockton house retrofit is a two-story Tudor style single family deep retrofit in the hot-dry climate of Stockton, CA. The home is representative of a deep retrofit option of the scaled home energy upgrade packages offered to targeted neighborhoods under the pilot Large-Scale Retrofit Program (LSRP) administered by the Alliance for Residential Building Innovation (ARBI). Deep retrofit packages expand on the standard package by adding HVAC, water heater and window upgrades to the ducting, attic and floor insulation, domestic hot water insulation, envelope sealing, lighting and ventilation upgrades. Site energy savings with the deep retrofit were 23% compared to the pre-retrofit case, and 15% higher than the savings estimated for the standard retrofit package. Energy savings were largely a result of the water heater upgrade, and a combination of the envelope sealing, insulation and HVAC upgrade. The HVAC system was of higher efficiency than the building code standard. Overall the financed retrofit would have been more cost effective had a less expensive HVAC system been selected and barriers to wall insulation remedied. The homeowner experienced improved comfort throughout the monitored period and was satisfied with the resulting utility bill savings.

  7. New Whole-House Solutions Case Study: Nexus EnergyHomes, Frederick, Maryland

    SciTech Connect (OSTI)

    2014-02-01

    With this new home—which achieved the highest rating possible under the National Green Building Standard—Nexus EnergyHomes demonstrated that green and affordable can go hand in hand. The mixed-humid climate builder, along with the U.S. Department of Energy Building America team Partnership for Home Innovation, embraced the challenge to create a new duplex home in downtown Frederick, Maryland, that successfully combines affordability with state-of-the-art efficiency and indoor environmental quality. To limit costs, the builder designed a simple rectangular shape and kept interesting architectural features such as porches outside the building’s structure. This strategy avoided the common pitfall of creating potential air leakage where architectural features are connected to the structure before the building is sealed against air infiltration. To speed construction and limit costs, the company chose factory-assembled components such as structural insulated panel walls and floor and roof trusses. Factory-built elements were key in achieving continuous insulation around the entire structure. Open-cell spray foam at the rim joist and attic roofline completed the insulation package, and kept the heating, ventilating, and air-conditioning system in conditioned space.

  8. Existing Whole-House Solutions Case Study: Applying Best Practices to Florida Local Government Retrofit Programs - Central Florida

    SciTech Connect (OSTI)

    2014-03-01

    In some communities, local government and non-profit entities have funds to purchase and renovate distressed, foreclosed homes for resale in the affordable housing market. Numerous opportunities to improve whole house energy efficiency are inherent in these comprehensive renovations. BA-PIRC worked together in a multiyear field study making recommendations in individual homes, meanwhile compiling improvement costs, projected energy savings, practical challenges, and labor force factors surrounding common energy-related renovation measures. The field study, Phase 1 of this research, resulted in a set of best practices appropriate to the current labor pool and market conditions in central Florida to achieve projected annual energy savings of 15%-30% and higher. This case study describes Phase 2 of the work where researchers worked with a local government partner to implement and refine the "current best practices". A simulation study was conducted to characterize savings potential under three sets of conditions representing varying replacement needs for energy-related equipment and envelope components. The three scenarios apply readily to the general remodeling industry as for renovation of foreclosed homes for the affordable housing market. The new local government partner, the City of Melbourne, implemented the best practices in a community-scale renovation program that included ten homes in 2012.

  9. Building America Best Practices Series Volume 16: 40% Whole-House Energy Savings in the Mixed-Humid Climate

    SciTech Connect (OSTI)

    Baechler, Michael C.; Gilbride, Theresa L.; Hefty, Marye G.; Cole, Pamala C.; Adams, Karen; Butner, Ryan S.; Ortiz, Sallie J.

    2011-09-01

    This best practices guide is the 16th in a series of guides for builders produced by PNNL for the U.S. Department of Energy’s Building America program. This guide book is a resource to help builders design and construct homes that are among the most energy-efficient available, while addressing issues such as building durability, indoor air quality, and occupant health, safety, and comfort. With the measures described in this guide, builders in the mixed-humid climate can build homes that have whole-house energy savings of 40% over the Building America benchmark with no added overall costs for consumers. The best practices described in this document are based on the results of research and demonstration projects conducted by Building America’s research teams. Building America brings together the nation’s leading building scientists with over 300 production builders to develop, test, and apply innovative, energy-efficient construction practices. Building America builders have found they can build homes that meet these aggressive energy-efficiency goals at no net increased costs to the homeowners. Currently, Building America homes achieve energy savings of 40% greater than the Building America benchmark home (a home built to mid-1990s building practices roughly equivalent to the 1993 Model Energy Code). The recommendations in this document meet or exceed the requirements of the 2009 IECC and 2009 IRC and those requirements are highlighted in the text. Requirements of the 2012 IECC and 2012 IRC are also noted in text and tables throughout the guide. This document will be distributed via the DOE Building America website: www.buildingamerica.gov.

  10. Building America Best Practices Series Volume 15: 40% Whole-House Energy Savings in the Hot-Humid Climate

    SciTech Connect (OSTI)

    Baechler, Michael C.; Gilbride, Theresa L.; Hefty, Marye G.; Cole, Pamala C.; Adams, Karen; Noonan, Christine F.

    2011-09-01

    This best practices guide is the 15th in a series of guides for builders produced by PNNL for the U.S. Department of Energy’s Building America program. This guide book is a resource to help builders design and construct homes that are among the most energy-efficient available, while addressing issues such as building durability, indoor air quality, and occupant health, safety, and comfort. With the measures described in this guide, builders in the hot-humid climate can build homes that have whole-house energy savings of 40% over the Building America benchmark with no added overall costs for consumers. The best practices described in this document are based on the results of research and demonstration projects conducted by Building America’s research teams. Building America brings together the nation’s leading building scientists with over 300 production builders to develop, test, and apply innovative, energy-efficient construction practices. Building America builders have found they can build homes that meet these aggressive energy-efficiency goals at no net increased costs to the homeowners. Currently, Building America homes achieve energy savings of 40% greater than the Building America benchmark home (a home built to mid-1990s building practices roughly equivalent to the 1993 Model Energy Code). The recommendations in this document meet or exceed the requirements of the 2009 IECC and 2009 IRC and those requirements are highlighted in the text. Requirements of the 2012 IECC and 2012 IRC are also noted in text and tables throughout the guide. This document will be distributed via the DOE Building America website: www.buildingamerica.gov.

  11. Systems Approaches in Immunology

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Systems Approaches in Immunology Systems Approaches in Immunology WHEN: Sep 27, 2016 7:00 AM - Sep 28, 2016 5:00 PM WHERE: Inn and Spa at Loretto Santa Fe, NM CATEGORY: Community Science TYPE: Conference INTERNAL: Calendar Login Event Description Advancements in immunology can be made through the development of theoretical and experimental techniques supplying models that bring together phenomena at different levels of complexity to study mechanisms that arise at the systems level. This meeting

  12. Applying Best Practices to Florida Local Government Retrofit Programs, Central Florida (Fact Sheet), Building America Case Study: Whole-House Solutions for Existing Homes, Building Technologies Office (BTO)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Whole-House Solutions for Existing Homes Applying Best Practices to Florida Local Government Retrofit Programs Central Florida During 2009, 2010, and 2011, researchers of the U.S. Department of Energy's research team Building America Partnership for Improved Residential Construction (BA-PIRC) provided analysis and recommendations to eight affordable housing entities conduct- ing comprehensive renovations in 70 distressed, foreclosed homes in central Florida. Partners achieved a mutually agreed

  13. Building America Residential System Research Results: Achieving 30% Whole House Energy Savings Level in Marine Climates; January 2006 - December 2006

    SciTech Connect (OSTI)

    Anderson, R.; Hendron, R.; Eastment, M.; Jalalzadeh-Azar, A.

    2006-12-01

    This report summarizes research results for the 30% energy savings level and demonstrates that lead builders can successfully provide 30% homes in the Marine Climate Region on a cost-neutral basis.

  14. Analysis of System Strategies Targeting Near-Term Building America Energy-Performance Goals for New Single-Family Homes: FY2004 Fourth-Quarter Building America Milestone Report

    SciTech Connect (OSTI)

    Anderson, R.; Christensen, C.; Horowitz, S.; Courtney, A.; Givler, T.; Tupper, K.; Barker, G.

    2004-11-01

    This report describes the technical approach used by Building America to determine the most cost effective pathways to achieve whole-house energy savings goals.

  15. Existing Whole-House Solutions Case Study: Pilot Demonstration of Phased Retrofits in Florida Homes - Central and South Florida Homes

    SciTech Connect (OSTI)

    2014-08-01

    In this pilot project, the Building America Partnership for Improved Residential Construction and Florida Power and Light are collaborating to retrofit a large number of homes using a phased approach to both simple and deep retrofits. This project will provide the information necessary to significantly reduce energy use through larger community-scale projects in collaboration with utilities, program administrators and other market leader stakeholders.

  16. Building America Whole-House Solutions for New Homes: Evluating Through-Wall Air Transfer Fans, Pittburgh, Pennsylvania

    Broader source: Energy.gov [DOE]

    In this project, Building America team IBACOS performed field testing in a new construction unoccupied test house in Pittsburgh, Pennsylvania to evaluate HVAC distribution systems during heating, cooling, and midseason conditions.

  17. New Whole-House Solutions Case Study: New Town Builders' Power of Zero Energy Center - Denver, Colorado

    SciTech Connect (OSTI)

    2014-10-01

    New Town Builders, a builder of energy efficient homes in Denver, Colorado, offers a zero energy option for all the homes it builds. To attract a wide range of potential homebuyers to its energy efficient homes, New Town Builders created a "Power of Zero Energy Center" linked to its model home in the Stapleton community. This case study presents New Town Builders' marketing approach, which is targeted to appeal to homebuyers' emotions rather than overwhelming homebuyers with scientific details about the technology. The exhibits in the Power of Zero Energy Center focus on reduced energy expenses for the homeowner, improved occupant comfort, the reputation of the builder, and the lack of sacrificing the homebuyers' desired design features to achieve zero net energy in the home. This case study also contains customer and realtor testimonials related to the effectiveness of the Center in influencing homebuyers to purchase a zero energy home.

  18. Existing Whole-House Solutions Case Study: Retrofitting a 1960s Split-Level Cold-Climate Home

    SciTech Connect (OSTI)

    Puttagunta, S.

    2015-08-01

    ​​National programs such as Home Performance with ENERGY STAR® and numerous other utility air sealing programs have brought awareness to homeowners of the benefits of energy efficiency retrofits. Yet, these programs tend to focus on the low-hanging fruit: air-sealing the thermal envelope and ductwork where accessible, switch to efficient lighting, and low-flow fixtures. At the other end of the spectrum, deep-energy retrofit programs are also being encouraged by various utilities across the country. While deep energy retrofits typically seek 50% energy savings, they are often quite costly and most applicable to gut-rehab projects. A significant potential for lowering energy usage in existing homes lies between the low hanging fruit and deep energy retrofit approaches - retrofits that save approximately 30% in energy over the existing conditions.

  19. Existing Whole-House Solutions Case Study: Bay Ridge Gardens - Mixed Humid Affordable Multifamily Housing Deep Energy Retrofit, Annapolis, Maryland

    SciTech Connect (OSTI)

    2013-10-01

    Under this project, the BA-PIRC research team evaluated the installation, measured performance, and cost-effectiveness of efficiency upgrade measures for a tenant-in-place deep energy retrofit at the Bay Ridge multifamily development in Annapolis, Maryland. The design and construction phase of the Bay Ridge project was completed in August 2012. This case study summarizes system commissioning, short-term test results, utility bill data analysis, and analysis of real-time data collected over a one-year period after the retrofit was complete.

  20. Building America Case Study: Performance of a Hot-Dry Climate Whole House Retrofit, Stockton, California (Fact Sheet)

    SciTech Connect (OSTI)

    ARBI

    2014-09-01

    The Stockton house retrofit is a two-story tudor style single family deep retrofit in the hot-dry climate of Stockton, CA. The home is representative of a deep retrofit option of the scaled home energy upgrade packages offered to targeted neighborhoods under the pilot Large-Scale Retrofit Program (LSRP) administered by the Alliance for Residential Building Innovation (ARBI). Deep retrofit packages expand on the standard package by adding HVAC, water heater and window upgrades to the ducting, attic and floor insulation, domestic hot water insulation, envelope sealing, lighting and ventilation upgrades. Site energy savings with the deep retrofit were 23% compared to the pre-retrofit case, and 15% higher than the savings estimated for the standard retrofit package. Energy savings were largely a result of the water heater upgrade, and a combination of the envelope sealing, insulation and HVAC upgrade. The HVAC system was of higher efficiency than the building code standard. Overall the financed retrofit would have been more cost effective had a less expensive HVAC system been selected and barriers to wall insulation remedied. The homeowner experienced improved comfort throughout the monitored period and was satisfied with the resulting utility bill savings.

  1. New Whole-House Solutions Case Study: Technology Solutions for New Manufactured Homes, Idaho, Oregon, and Washington

    SciTech Connect (OSTI)

    BA-PIRC

    2013-11-01

    The Building America Partnership for Improved Residential Construction, the Bonneville Power Administration (BPA), and Northwest Energy Works (NEW), the current Northwest Energy Efficient Manufactured Housing Program (NEEM) administrator, have been collaborating to conduct research on new specifications that would improve on the energy requirements of a NEEM home. In its role as administrator, NEW administers the technical specs, performs research and engineering analysis, implements ongoing construction quality management procedures, and maintains a central database with home tracking. This project prototyped and assessed the performances of cost-effective high performance building assemblies and mechanical systems that are not commonly deployed in the manufacturing setting. The package of measures is able to reduce energy used for space conditioning, water heating and lighting by 50 percent over typical manufactured homes produced in the northwest.

  2. New Whole-House Solutions Case Study: Exterior Rigid Foam Insulation at the Edge of a Slab Foundation, Fresno, California

    SciTech Connect (OSTI)

    2013-10-01

    Exterior rigid foam insulation at the edge of the slab foundation was a unique feature for this low-load, unoccupied test house in a hot-dry climate and may be more appropriate for climates with higher heating loads. U.S. Department of Energy Building America research team IBACOS worked with National Housing Quality Award winner Wathen-Castanos Hybrid Homes, Inc., to assess the performance of this feature in a single-family detached ranch house with three bedrooms and two full bathrooms constructed on a slab-on-grade foundation in Fresno, California. One challenge during installation of the system was the attachment of the butyl flashing to the open framing. To solve this constructability issue, the team added a nailer to the base of the wall to properly attach and lap the flashing. In this strategy, R-7.5, 1.5-in.-thick extruded polystyrene was installed on the exterior of the slab for a modeled savings of 4,500 Btu/h on the heating load.

  3. Building America Best Practices Series Volume 11. Builders Challenge Guide to 40% Whole-House Energy Savings in the Marine Climate

    SciTech Connect (OSTI)

    Baechler, Michael C.; Gilbride, Theresa L.; Hefty, Marye G.; Cole, Pamala C.; Williamson, Jennifer L.; Love, Pat M.

    2010-09-01

    This best practices guide is the eleventh in a series of guides for builders produced by the U.S. Department of Energy’s Building America Program. This guide book is a resource to help builders design and construct homes that are among the most energy-efficient available, while addressing issues such as building durability, indoor air quality, and occupant health, safety, and comfort. With the measures described in this guide, builders in the marine climate (portions of Washington, Oregon, and California) can achieve homes that have whole house energy savings of 40% over the Building America benchmark (a home built to mid-1990s building practices roughly equivalent to the 1993 Model Energy Code) with no added overall costs for consumers. These best practices are based on the results of research and demonstration projects conducted by Building America’s research teams. The guide includes information for managers, designers, marketers, site supervisors, and subcontractors, as well as case studies of builders who are successfully building homes that cut energy use by 40% in the marine climate. This document is available on the web at www.buildingamerica.gov. This report was originally cleared 06-29-2010. This version is Rev 1 cleared in Nov 2010. The only change is the reference to the Energy Star Windows critieria shown on pg 8.25 was updated to match the criteria - Version 5.0, 04/07/2009, effective 01/04/2010.

  4. Building America Best Practices Series, Volume 9: Builders Challenge Guide to 40% Whole-House Energy Savings in the Hot-Dry and Mixed-Dry Climates

    SciTech Connect (OSTI)

    Baechler, Michael C.; Gilbride, Theresa L.; Hefty, Marye G.; Williamson, Jennifer L.; Ruiz, Kathleen A.; Bartlett, Rosemarie; Love, Pat M.

    2009-10-23

    This best practices guide is the ninth in a series of guides for builders produced by the U.S. Department of Energy’s Building America Program. This guide book is a resource to help builders design and construct homes that are among the most energy-efficient available, while addressing issues such as building durability, indoor air quality, and occupant health, safety, and comfort. With the measures described in this guide, builders in the hot-dry and mixed-dry climates can achieve homes that have whole house energy savings of 40% over the Building America benchmark (a home built to mid-1990s building practices roughly equivalent to the 1993 Model Energy Code) with no added overall costs for consumers. These best practices are based on the results of research and demonstration projects conducted by Building America’s research teams. The guide includes information for managers, designers, marketers, site supervisors, and subcontractors, as well as case studies of builders who are successfully building homes that cut energy use by 40% in the hot-dry and mixed-dry climates.

  5. Building America Best Practices Series Volume 12: Builders Challenge Guide to 40% Whole-House Energy Savings in the Cold and Very Cold Climates

    SciTech Connect (OSTI)

    Baechler, Michael C.; Gilbride, Theresa L.; Hefty, Marye G.; Cole, Pamala C.; Love, Pat M.

    2011-02-01

    This best practices guide is the twelfth in a series of guides for builders produced by PNNL for the U.S. Department of Energy’s Building America program. This guide book is a resource to help builders design and construct homes that are among the most energy-efficient available, while addressing issues such as building durability, indoor air quality, and occupant health, safety, and comfort. With the measures described in this guide, builders in the cold and very cold climates can build homes that have whole-house energy savings of 40% over the Building America benchmark with no added overall costs for consumers. The best practices described in this document are based on the results of research and demonstration projects conducted by Building America’s research teams. Building America brings together the nation’s leading building scientists with over 300 production builders to develop, test, and apply innovative, energy-efficient construction practices. Building America builders have found they can build homes that meet these aggressive energy-efficiency goals at no net increased costs to the homeowners. Currently, Building America homes achieve energy savings of 40% greater than the Building America benchmark home (a home built to mid-1990s building practices roughly equivalent to the 1993 Model Energy Code). The recommendations in this document meet or exceed the requirements of the 2009 IECC and 2009 IRC and thos erequirements are highlighted in the text. This document will be distributed via the DOE Building America website: www.buildingamerica.gov.

  6. Systems biology approach to bioremediation

    SciTech Connect (OSTI)

    Chakraborty, Romy; Wu, Cindy H.; Hazen, Terry C.

    2012-06-01

    Bioremediation has historically been approached as a ‘black box’ in terms of our fundamental understanding. Thus it succeeds and fails, seldom without a complete understanding of why. Systems biology is an integrated research approach to study complex biological systems, by investigating interactions and networks at the molecular, cellular, community, and ecosystem level. The knowledge of these interactions within individual components is fundamental to understanding the dynamics of the ecosystem under investigation. Finally, understanding and modeling functional microbial community structure and stress responses in environments at all levels have tremendous implications for our fundamental understanding of hydrobiogeochemical processes and the potential for making bioremediation breakthroughs and illuminating the ‘black box’.

  7. Building America Systems Engineering Approach

    SciTech Connect (OSTI)

    2011-12-15

    The Building America Research Teams use a systems engineering approach to achieve higher quality and energy savings in homes. Using these techniques, the energy consumption of new houses can be reduced by 40% or more with little or no impact on the cost of ownership.

  8. Analysis of Residential System Strategies Targeting Least-Cost Solutions Leading to Net Zero Energy Homes: Preprint

    SciTech Connect (OSTI)

    Anderson, R.; Christensen, C.; Horowitz, S.

    2006-04-01

    The U. S. Department of Energy's Building America residential systems research project uses an analysis-based system research approach to identify research priorities, identify technology gaps and opportunities, establish a consistent basis to track research progress, and identify system solutions that are most likely to succeed as the initial targets for residential system research projects. This report describes the analysis approach used by the program to determine the most cost-effective pathways to achieve whole-house energy-savings goals. This report also provides an overview of design/technology strategies leading to net zero energy buildings as the basis for analysis of future residential system performance.

  9. Ventilation Systems for Cooling | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... flames, running a dishwasher, and using hot devices such as curling irons or hair dryers. ... for Cooling Whole-House Fans Home Heating Systems Heat Pump Systems Water Heating

  10. Building America Residential System Research Results: Achieving 30% Whole House Energy Savings Level in Mixed-Humid Climates; January 2006 - December 2006

    SciTech Connect (OSTI)

    Anderson, R.; Hendron, R.; Eastment, M.; Jalalzadeh-Azar, A.

    2006-12-01

    This report summarizes research results for the 30% energy savings level and demonstrates that lead builders can successfully provide 30% homes in the Mixed-Humid Climate Region on a cost-neutral basis.

  11. Building America Residential System Research Results. Achieving 30% Whole House Energy Savings Level in Hot-Dry and Mixed-Dry Climates

    SciTech Connect (OSTI)

    Anderson, R.; Hendron, R.; Eastment, M.; Jalalzadeh-Azar, A.

    2006-01-01

    This report summarizes Building America research results for the 30% energy savings level and demonstrates that lead builders can successfully provide 30% homes in the Hot-Dry/Mixed-Dry Climate Region on a cost-neutral basis.

  12. Commercial dissemination approaches for solar home systems

    SciTech Connect (OSTI)

    Terrado, E.

    1997-12-01

    The author discusses the issue of providing solar home systems to primarily rural areas from the perspective of how to commercialize the process. He considers two different approaches, one an open market approach and the other an exclusive market approach. He describes examples of the exclusive market approach which are in process in Argentina and Brazil. Coming from a banking background, the business aspects are discussed in detail. He points out the strengths and weaknesses of both approaches toward developing such systems.

  13. New Whole-House Solutions Case Study: Testing Ductless Heat Pumps in High-Performance Affordable Housing, the Woods at Golden Given - Tacoma, Washington

    SciTech Connect (OSTI)

    2015-06-01

    The Woods is a 30-home, high- performance, energy efficient sustainable community built by Habitat for Humanity (HFH). With Support from Tacoma Public Utilities, Washington State University (part of the Building America Partnership for Improved Residential Construction) is researching the energy performance of these homes and the ductless heat pumps (DHP) they employ. This project provides Building America with an opportunity to: field test HVAC equipment, ventilation system air flows, building envelope tightness, lighting, appliance, and other input data that are required for preliminary Building Energy Optimization (BEopt™) modeling and ENERGY STAR® field verification; analyze cost data from HFH and other sources related to building-efficiency measures that focus on the DHP/hybrid heating system and heat recovery ventilation system; evaluate the thermal performance and cost benefit of DHP/hybrid heating systems in these homes from the perspective of homeowners; compare the space heating energy consumption of a DHP/electric resistance (ER) hybrid heating system to that of a traditional zonal ER heating system; conduct weekly "flip-flop tests" to compare space heating, temperature, and relative humidity in ER zonal heating mode to DHP/ER mode.

  14. Bay Ridge Gardens - Mixed Humid Affordable Multifamily Housing Deep Energy Retrofit: Annapolis, Maryland. Building America Case Study: Whole-House Solutions for Existing Homes (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-10-01

    Under this project, Newport Partners (as part of the BA-PIRC research team) evaluated the installation, measured performance, and cost-effectiveness of efficiency upgrade measures for a tenant-in-place DER at the Bay Ridge multifamily (MF) development in Annapolis, Maryland. The design and construction phase of the Bay Ridge project was completed in August 2012. This report summarizes system commissioning, short-term test results, utility bill data analysis, and analysis of real-time data collected over a one-year period after the retrofit was complete. The Bay Ridge project is comprised of a "base scope" retrofit which was estimated to achieve a 30%+ savings (relative to pre-retrofit) on 186 apartments, and a "DER scope" which was estimated to achieve 50% savings (relative to pre-retrofit) on a 12-unit building. The base scope was applied to the entire apartment complex, except for one 12-unit building which underwent the DER scope. A wide range of efficiency measures was applied to pursue this savings target for the DER building, including improvements/replacements of mechanical equipment and distribution systems, appliances, lighting and lighting controls, the building envelope, hot water conservation measures, and resident education. The results of this research build upon the current body of knowledge of multifamily retrofits. Towards this end, the research team has collected and generated data on the selection of measures, their estimated performance, their measured performance, and risk factors and their impact on potential measures.

  15. New Whole-House Solutions Case Study: Fort Devens: Cold Climate Market-Rate Townhomes Targeting HERS Index of 40, Harvard, Massachusetts

    SciTech Connect (OSTI)

    2013-11-01

    Achieving aggressive energy efficiency targets requires tight coordination and clear communication among owners, designers, builders, and subcontractors. For this townhome project, MassDevelopment, the quasi-governmental agency owner, selected Metric Development of Boston, teaming with Building America team Consortium for Advanced Residential Buildings (CARB) and Cambridge Seven Architects, to build very high performing market-rate homes. Fort Devens is part of a decommissioned army base in working-class Harvard, Massachusetts, approximately one hour northwest of Boston. The team proposed 12 net zero energy-ready townhomes that were also designed to achieve a Home Energy Rating System (HERS) Index Score of 41 before adding renewables. The team carefully planned the site to maximize solar access, daylighting, and efficient building forms.

  16. Whole House Fans | Open Energy Information

    Open Energy Info (EERE)

    Contact needs updating Image needs updating Reference needed Missing content Broken link Other Additional Comments Cancel Submit Category: Articles with outstanding TODO tasks...

  17. Systems approach to project risk management

    SciTech Connect (OSTI)

    Kindinger, J. P.

    2002-01-01

    This paper describes the need for better performance in the planning and execution of projects and examines the capabilities of two different project risk analysis methods for improving project performance. A quantitative approach based on concepts and tools adopted from the disciplines of systems analysis, probabilistic risk analysis, and other fields is advocated for managing risk in large and complex research & development projects. This paper also provides an overview of how this system analysis approach for project risk management is being used at Los Alamos National Laboratory along with examples of quantitative risk analysis results and their application to improve project performance.

  18. Systems Approach to Arms Control Verification

    SciTech Connect (OSTI)

    Allen, K; Neimeyer, I; Listner, C; Stein, G; Chen, C; Dreicer, M

    2015-05-15

    Using the decades of experience of developing concepts and technologies for verifying bilateral and multilateral arms control agreements, a broad conceptual systems approach is being developed that takes into account varying levels of information and risk. The IAEA has already demonstrated the applicability of a systems approach by implementing safeguards at the State level, with acquisition path analysis as the key element. In order to test whether such an approach could also be implemented for arms control verification, an exercise was conducted in November 2014 at the JRC ITU Ispra. Based on the scenario of a hypothetical treaty between two model nuclear weapons states aimed at capping their nuclear arsenals at existing levels, the goal of this exercise was to explore how to use acquisition path analysis in an arms control context. Our contribution will present the scenario, objectives and results of this exercise, and attempt to define future workshops aimed at further developing verification measures that will deter or detect treaty violations.

  19. A Multifaceted Mathematical Approach for Complex Systems

    SciTech Connect (OSTI)

    Alexander, F.; Anitescu, M.; Bell, J.; Brown, D.; Ferris, M.; Luskin, M.; Mehrotra, S.; Moser, B.; Pinar, A.; Tartakovsky, A.; Willcox, K.; Wright, S.; Zavala, V.

    2012-03-07

    Applied mathematics has an important role to play in developing the tools needed for the analysis, simulation, and optimization of complex problems. These efforts require the development of the mathematical foundations for scientific discovery, engineering design, and risk analysis based on a sound integrated approach for the understanding of complex systems. However, maximizing the impact of applied mathematics on these challenges requires a novel perspective on approaching the mathematical enterprise. Previous reports that have surveyed the DOE's research needs in applied mathematics have played a key role in defining research directions with the community. Although these reports have had significant impact, accurately assessing current research needs requires an evaluation of today's challenges against the backdrop of recent advances in applied mathematics and computing. To address these needs, the DOE Applied Mathematics Program sponsored a Workshop for Mathematics for the Analysis, Simulation and Optimization of Complex Systems on September 13-14, 2011. The workshop had approximately 50 participants from both the national labs and academia. The goal of the workshop was to identify new research areas in applied mathematics that will complement and enhance the existing DOE ASCR Applied Mathematics Program efforts that are needed to address problems associated with complex systems. This report describes recommendations from the workshop and subsequent analysis of the workshop findings by the organizing committee.

  20. Comparison of Routable Control System Security Approaches

    SciTech Connect (OSTI)

    Edgar, Thomas W.; Hadley, Mark D.; Carroll, Thomas E.; Manz, David O.; Winn, Jennifer D.

    2011-06-01

    This document is an supplement to the 'Secure and Efficient Routable Control Systems.' It addressed security in routable control system communication. The control system environment that monitors and manages the power grid historically has utilized serial communication mechanisms. Leased-line serial communication environments operating at 1200 to 9600 baud rates are common. However, recent trends show that communication media such as fiber, optical carrier 3 (OC-3) speeds, mesh-based high-speed wireless, and the Internet are becoming the media of choice. In addition, a dichotomy has developed between the electrical transmission and distribution environments, with more modern communication infrastructures deployed by transmission utilities. The preceding diagram represents a typical control system. The Communication Links cloud supports all of the communication mechanisms a utility might deploy between the control center and devices in the field. Current methodologies used for security implementations are primarily led by single vendors or standards bodies. However, these entities tend to focus on individual protocols. The result is an environment that contains a mixture of security solutions that may only address some communication protocols at an increasing operational burden for the utility. A single approach is needed that meets operational requirements, is simple to operate, and provides the necessary level of security for all control system communication. The solution should be application independent (e.g., Distributed Network Protocol/Internet Protocol [DNP/IP], International Electrotechnical Commission [IEC] C37.118, Object Linking and Embedding for Process Control [OPC], etc.) and focus on the transport layer. In an ideal setting, a well-designed suite of standards for control system communication will be used for vendor implementation and compliance testing. An expected outcome of this effort is an international standard.

  1. A Model-Based Approach to Scintillator/Photomultiplier System...

    Office of Scientific and Technical Information (OSTI)

    System Characterization Citation Details In-Document Search Title: A Model-Based Approach to ScintillatorPhotomultiplier System Characterization You are accessing ...

  2. Cool Roofs | Department of Energy

    Energy Savers [EERE]

    How they can be made cool: Reformulate or coat black membranes to make them reflective. ... Tips: energy efficient roofs Energy efficient home design Whole-house systems approach ...

  3. Tips: Energy-Efficient Roofs | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    deciding to install a green roof. Learn More Energy efficient home design Cool roofs Incentives and financing for energy efficient homes Whole-house systems approach ...

  4. Novel Approaches to Immobilized Heteropoly Acid Systems for High...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Low Relative Humidity Polymer-Type Membranes Novel Approaches to Immobilized Heteropoly Acid Systems for High Temperature, Low Relative Humidity Polymer-Type Membranes A ...

  5. Advanced Methods Approach to Hybrid Powertrain Systems Optimization...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Advanced Methods Approach to Hybrid Powertrain Systems Optimization of a Transit Bus Application Design refinements of the GTB-40 mass-transit bus include new optimization ...

  6. A Model-Based Approach to Scintillator/Photomultiplier System...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: A Model-Based Approach to ScintillatorPhotomultiplier System ... Sponsoring Org: USDOE Country of Publication: United States Language: English Subject: 46 ...

  7. An approach to designing optimal imaging systems

    SciTech Connect (OSTI)

    Seeley, G.W.; Barrett, H.H.; Borgstrom, M.C.; Cargill, E.B.; Fiete, R.D.; Myers, K.J.; Patton, D.D.; Smith, W.E.; Stempski, M.O.; Paxman, R.G.

    1985-05-01

    This paper reports recent work by the authors to develop a systematic basis for the improvement of existing and the development of new imaging systems for nuclear medicine. Assessment of imaging systems is typically done by using the radiologists' perceptual skills in a number of tasks which approximate the clinical setting. For these psycho-physical experiments, an object class with a specified number of categories must first be selected (e.g., liver with or without lesions). Data collected by the system to be evaluated are then used to generate a set of images which are displayed to the observers. From the experiment comes a figure of merit that is used to evaluate the system. However, there is often no clear indication of how one should use the information from the psychophysical study to guide physicists and engineers toward specific improvements in the imaging system. Proposed here is a procedure which will provide a feedback loop for system improvement. A key part of this procedure involves identifying and selecting features that can be used to classify images into their respective categories. The human-evaluation segment of the paradigm, which makes use of signal-detection theory and multidimensional scaling techniques, serves as a verification of the computer-selected features.

  8. House-as-a-System Business Case- Building America Top Innovations

    Broader source: Energy.gov [DOE]

    Top Innovations in this category include profiles of Building America field research projects with production builders who have used a whole-house approach to achieve exceptional energy efficiency, comfort, and durability. These examples demonstrate that constructing high-performance homes make economic sense—for the builder, the consumer, the real estate professional, and the environment.

  9. The AdaptiV Approach to Verification of Adaptive Systems

    SciTech Connect (OSTI)

    Rouff, Christopher; Buskens, Richard; Pullum, Laura L; Cui, Xiaohui; Hinchey, Mike

    2012-01-01

    Adaptive systems are critical for future space and other unmanned and intelligent systems. Verification of these systems is also critical for their use in systems with potential harm to human life or with large financial investments. Due to their nondeterministic nature and extremely large state space, current methods for verification of software systems are not adequate to provide a high level of assurance. The combination of stabilization science, high performance computing simulations, compositional verification and traditional verification techniques, plus operational monitors, provides a complete approach to verification and deployment of adaptive systems that has not been used before. This paper gives an overview of this approach.

  10. Materials, Modules, and Systems: An Atoms to Autos Approach to Automotive Thermoelectric Systems Development

    Office of Energy Efficiency and Renewable Energy (EERE)

    Highlights comprehensive approach tothermoelectric materials, module, and systems development at GM and in collaboration with our R&D partners

  11. An Intelligent Systems Approach to Reservoir Characterization

    SciTech Connect (OSTI)

    Shahab D. Mohaghegh; Jaime Toro; Thomas H. Wilson; Emre Artun; Alejandro Sanchez; Sandeep Pyakurel

    2005-08-01

    Today, the major challenge in reservoir characterization is integrating data coming from different sources in varying scales, in order to obtain an accurate and high-resolution reservoir model. The role of seismic data in this integration is often limited to providing a structural model for the reservoir. Its relatively low resolution usually limits its further use. However, its areal coverage and availability suggest that it has the potential of providing valuable data for more detailed reservoir characterization studies through the process of seismic inversion. In this paper, a novel intelligent seismic inversion methodology is presented to achieve a desirable correlation between relatively low-frequency seismic signals, and the much higher frequency wireline-log data. Vertical seismic profile (VSP) is used as an intermediate step between the well logs and the surface seismic. A synthetic seismic model is developed by using real data and seismic interpretation. In the example presented here, the model represents the Atoka and Morrow formations, and the overlying Pennsylvanian sequence of the Buffalo Valley Field in New Mexico. Generalized regression neural network (GRNN) is used to build two independent correlation models between; (1) Surface seismic and VSP, (2) VSP and well logs. After generating virtual VSP's from the surface seismic, well logs are predicted by using the correlation between VSP and well logs. The values of the density log, which is a surrogate for reservoir porosity, are predicted for each seismic trace through the seismic line with a classification approach having a correlation coefficient of 0.81. The same methodology is then applied to real data taken from the Buffalo Valley Field, to predict inter-well gamma ray and neutron porosity logs through the seismic line of interest. The same procedure can be applied to a complete 3D seismic block to obtain 3D distributions of reservoir properties with less uncertainty than the geostatistical

  12. Novel Approaches to Immobilized Heteropoly Acid Systems for High

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Temperature, Low Relative Humidity Polymer-Type Membranes | Department of Energy Approaches to Immobilized Heteropoly Acid Systems for High Temperature, Low Relative Humidity Polymer-Type Membranes Novel Approaches to Immobilized Heteropoly Acid Systems for High Temperature, Low Relative Humidity Polymer-Type Membranes A presentation to the High Temperature Membranes Working Group meeting, May 19, 2006. herring.pdf (212.89 KB) More Documents & Publications High Temperature Membrane

  13. An approach to software quality assurance for robotic inspection systems

    SciTech Connect (OSTI)

    Kiebel, G.R.

    1993-10-01

    Software quality assurance (SQA) for robotic systems used in nuclear waste applications is vital to ensure that the systems operate safely and reliably and pose a minimum risk to humans and the environment. This paper describes the SQA approach for the control and data acquisition system for a robotic system being developed for remote surveillance and inspection of underground storage tanks (UST) at the Hanford Site.

  14. Multi-purpose canister system evaluation: A systems engineering approach

    SciTech Connect (OSTI)

    Not Available

    1994-09-01

    This report summarizes Department of Energy (DOE) efforts to investigate various container systems for handling, transporting, storing, and disposing of spent nuclear fuel (SNF) assemblies in the Civilian Radioactive Waste Management System (CRWMS). The primary goal of DOE`s investigations was to select a container technology that could handle the vast majority of commercial SNF at a reasonable cost, while ensuring the safety of the public and protecting the environment. Several alternative cask and canister concepts were evaluated for SNF assembly packaging to determine the most suitable concept. Of these alternatives, the multi-purpose canister (MPC) system was determined to be the most suitable. Based on the results of these evaluations, the decision was made to proceed with design and certification of the MPC system. A decision to fabricate and deploy MPCs will be made after further studies and preparation of an environmental impact statement.

  15. Systems engineering approach towards performance monitoring of emergency diesel generator

    SciTech Connect (OSTI)

    Ramli, Nurhayati Yong-kwan, Lee

    2014-02-12

    Systems engineering is an interdisciplinary approach and means to enable the realization of successful systems. In this study, systems engineering approach towards the performance monitoring of Emergency Diesel Generator (EDG) is presented. Performance monitoring is part and parcel of predictive maintenance where the systems and components conditions can be detected before they result into failures. In an effort to identify the proposal for addressing performance monitoring, the EDG boundary has been defined. Based on the Probabilistic Safety Analysis (PSA) results and industry operating experiences, the most critical component is identified. This paper proposed a systems engineering concept development framework towards EDG performance monitoring. The expected output of this study is that the EDG reliability can be improved by the performance monitoring alternatives through the systems engineering concept development effort.

  16. Total System Performance Assessment-License Application Methods and Approach

    SciTech Connect (OSTI)

    J. McNeish

    2002-09-13

    ''Total System Performance Assessment-License Application (TSPA-LA) Methods and Approach'' provides the top-level method and approach for conducting the TSPA-LA model development and analyses. The method and approach is responsive to the criteria set forth in Total System Performance Assessment Integration (TSPAI) Key Technical Issue (KTI) agreements, the ''Yucca Mountain Review Plan'' (CNWRA 2002 [158449]), and 10 CFR Part 63. This introductory section provides an overview of the TSPA-LA, the projected TSPA-LA documentation structure, and the goals of the document. It also provides a brief discussion of the regulatory framework, the approach to risk management of the development and analysis of the model, and the overall organization of the document. The section closes with some important conventions that are utilized in this document.

  17. Total System Performance Assessment - License Application Methods and Approach

    SciTech Connect (OSTI)

    J. McNeish

    2003-12-08

    ''Total System Performance Assessment-License Application (TSPA-LA) Methods and Approach'' provides the top-level method and approach for conducting the TSPA-LA model development and analyses. The method and approach is responsive to the criteria set forth in Total System Performance Assessment Integration (TSPAI) Key Technical Issues (KTIs) identified in agreements with the U.S. Nuclear Regulatory Commission, the ''Yucca Mountain Review Plan'' (YMRP), ''Final Report'' (NRC 2003 [163274]), and the NRC final rule 10 CFR Part 63 (NRC 2002 [156605]). This introductory section provides an overview of the TSPA-LA, the projected TSPA-LA documentation structure, and the goals of the document. It also provides a brief discussion of the regulatory framework, the approach to risk management of the development and analysis of the model, and the overall organization of the document. The section closes with some important conventions that are used in this document.

  18. Building America Case Study: Retrofitting a 1960s Split-Level, Cold-Climate Home, Westport, Connecticut; Whole-House Solutions for Existing Homes, Energy Efficiency & Renewable Energy (EERE)

    SciTech Connect (OSTI)

    2015-08-01

    ??National programs such as Home Performance with ENERGY STAR(R) and numerous other utility air sealing programs have brought awareness to homeowners of the benefits of energy efficiency retrofits. Yet, these programs tend to focus on the low-hanging fruit: air-sealing the thermal envelope and ductwork where accessible, switch to efficient lighting, and low-flow fixtures. At the other end of the spectrum, deep-energy retrofit programs are also being encouraged by various utilities across the country. While deep energy retrofits typically seek 50% energy savings, they are often quite costly and most applicable to gut-rehab projects. A significant potential for lowering energy usage in existing homes lies between the low hanging fruit and deep energy retrofit approaches - retrofits that save approximately 30% in energy over the existing conditions. A key is to be non-intrusive with the efficiency measures so the retrofit projects can be accomplished in occupied homes. This cold climate retrofit project involved the design and optimization of a home in Connecticut that sought to improve energy savings by at least 30% (excluding solar PV) over the existing home's performance. This report documents the successful implementation of a cost-effective solution package that achieved performance greater than 30% over the pre-retrofit - what worked, what did not, and what improvements could be made. Confirmation of successfully achieving 30% source energy savings over the pre-existing conditions was confirmed through energy modeling and comparison of the utility bills pre- and post- retrofit.

  19. Systems Approach to New Transportation Fuels | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Systems Approach to New Transportation Fuels Systems Approach to New Transportation Fuels Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. 2006_deer_brinkman.pdf (512.22 KB) More Documents & Publications Vehicle Technologies Office: 2008-2009 Fuels Technologies R&D Progress Report The Non-Petroleum Based Fuel Initiative - NPBF Vehicle Technologies Office: 2010 Fuel

  20. Systems approaches to integrated solid waste management in developing countries

    SciTech Connect (OSTI)

    Marshall, Rachael E.; Farahbakhsh, Khosrow

    2013-04-15

    Highlights: ? Five drivers led developed countries to current solid waste management paradigm. ? Many unique factors challenge developing country solid waste management. ? Limited transferability of developed country approaches to developing countries. ? High uncertainties and decision stakes call for post-normal approaches. ? Systems thinking needed for multi-scale, self-organizing eco-social waste systems. - Abstract: Solid waste management (SWM) has become an issue of increasing global concern as urban populations continue to rise and consumption patterns change. The health and environmental implications associated with SWM are mounting in urgency, particularly in the context of developing countries. While systems analyses largely targeting well-defined, engineered systems have been used to help SWM agencies in industrialized countries since the 1960s, collection and removal dominate the SWM sector in developing countries. This review contrasts the history and current paradigms of SWM practices and policies in industrialized countries with the current challenges and complexities faced in developing country SWM. In industrialized countries, public health, environment, resource scarcity, climate change, and public awareness and participation have acted as SWM drivers towards the current paradigm of integrated SWM. However, urbanization, inequality, and economic growth; cultural and socio-economic aspects; policy, governance, and institutional issues; and international influences have complicated SWM in developing countries. This has limited the applicability of approaches that were successful along the SWM development trajectories of industrialized countries. This review demonstrates the importance of founding new SWM approaches for developing country contexts in post-normal science and complex, adaptive systems thinking.

  1. Optimal subinterval selection approach for power system transient stability simulation

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kim, Soobae; Overbye, Thomas J.

    2015-10-21

    Power system transient stability analysis requires an appropriate integration time step to avoid numerical instability as well as to reduce computational demands. For fast system dynamics, which vary more rapidly than what the time step covers, a fraction of the time step, called a subinterval, is used. However, the optimal value of this subinterval is not easily determined because the analysis of the system dynamics might be required. This selection is usually made from engineering experiences, and perhaps trial and error. This paper proposes an optimal subinterval selection approach for power system transient stability analysis, which is based on modalmore » analysis using a single machine infinite bus (SMIB) system. Fast system dynamics are identified with the modal analysis and the SMIB system is used focusing on fast local modes. An appropriate subinterval time step from the proposed approach can reduce computational burden and achieve accurate simulation responses as well. As a result, the performance of the proposed method is demonstrated with the GSO 37-bus system.« less

  2. Optimal subinterval selection approach for power system transient stability simulation

    SciTech Connect (OSTI)

    Kim, Soobae; Overbye, Thomas J.

    2015-10-21

    Power system transient stability analysis requires an appropriate integration time step to avoid numerical instability as well as to reduce computational demands. For fast system dynamics, which vary more rapidly than what the time step covers, a fraction of the time step, called a subinterval, is used. However, the optimal value of this subinterval is not easily determined because the analysis of the system dynamics might be required. This selection is usually made from engineering experiences, and perhaps trial and error. This paper proposes an optimal subinterval selection approach for power system transient stability analysis, which is based on modal analysis using a single machine infinite bus (SMIB) system. Fast system dynamics are identified with the modal analysis and the SMIB system is used focusing on fast local modes. An appropriate subinterval time step from the proposed approach can reduce computational burden and achieve accurate simulation responses as well. As a result, the performance of the proposed method is demonstrated with the GSO 37-bus system.

  3. System-of-Systems Approach for Integrated Energy Systems Modeling and Simulation: Preprint

    SciTech Connect (OSTI)

    Mittal, Saurabh; Ruth, Mark; Pratt, Annabelle; Lunacek, Monte; Krishnamurthy, Dheepak; Jones, Wesley

    2015-08-21

    Today’s electricity grid is the most complex system ever built—and the future grid is likely to be even more complex because it will incorporate distributed energy resources (DERs) such as wind, solar, and various other sources of generation and energy storage. The complexity is further augmented by the possible evolution to new retail market structures that provide incentives to owners of DERs to support the grid. To understand and test new retail market structures and technologies such as DERs, demand-response equipment, and energy management systems while providing reliable electricity to all customers, an Integrated Energy System Model (IESM) is being developed at NREL. The IESM is composed of a power flow simulator (GridLAB-D), home energy management systems implemented using GAMS/Pyomo, a market layer, and hardware-in-the-loop simulation (testing appliances such as HVAC, dishwasher, etc.). The IESM is a system-of-systems (SoS) simulator wherein the constituent systems are brought together in a virtual testbed. We will describe an SoS approach for developing a distributed simulation environment. We will elaborate on the methodology and the control mechanisms used in the co-simulation illustrated by a case study.

  4. New Whole-House Solutions Case Study: Pine Mountain Builders...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... heat out of attics, and preservation of mature trees to provide shade. * The heat pump ... "We think that our greatest success is our overall customer satisfaction. Our consumers ...

  5. Building America Whole-House Solutions for Existing Homes: Community...

    Energy Savers [EERE]

    To that end, IBACOS analyzed pre-retrofit daily utility data to sort homes by energy consumption, allowing for better ... procedures, electricity consumption of 1,166 all ...

  6. New Whole-House Solutions Case Study: Schneider Homes, Inc.,...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Contractors caulked all mechanical penetrations, foamed the bottom and top plates of the ... Gasketing attic access hatches, foaming bottom and top plates, and caulking all ...

  7. New Whole-House Solutions Case Study: Insight Homes, Seaford...

    Energy Savers [EERE]

    Finally, integrated bathroom exhaust fans are timer-operated to satisfy ASHRAE 62.2 ... exhaust fans with run time to satisfy ASHRAE 62.2 * Kitchen and bath fans vented to ...

  8. New Whole-House Solutions Case Study: Urbane Homes, Louisville...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    foam instead of OSB sheathing, advanced framing, and ducts routed through open-web floor ... R (Photo top left) The walls use advanced framing with 2x6 studs at 24 inches on center ...

  9. Building America Whole-House Solutions for New Homes: Nelson...

    Broader source: Energy.gov (indexed) [DOE]

    Case study of Nelson Construction, who worked with the Building America research partner ... Nelson Construction: Hamilton Way - Farmington, CT (657.23 KB) More Documents & ...

  10. Building America Whole-House Solutions for New Homes: Meeting...

    Energy Savers [EERE]

    to evaluate the certification of five test homes to the new DOE Challenge Home ... that impacted the certification of the test homes, and the likelihood of whether DOE ...

  11. Cooling with a Whole House Fan | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... throughout the house to prevent a powerful and concentrated suction in one location. ... Tax Tips for Energy Savers: Get Money Back for Greening Your Home A Home Cooling Strategy ...

  12. Building America Whole-House Solutions for Existing Homes: Passive...

    Energy Savers [EERE]

    this project, IBACOS, a U.S. Department of Energy Building America team, assessed a strategy for providing conditioned air to bedrooms when the bedroom doors are closed and...

  13. New Whole-House Solutions Case Study: Grupe, Rocklin, California

    SciTech Connect (OSTI)

    none,

    2013-09-01

    This builder worked with Consortium for Advanced Residential Builldings to design HERS-54 homes that included PV roof tiles, SmartVent night ventilation cooling; and FreshVent continuous ventilation

  14. Building America Whole-House Solutions for New Homes: Singer...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    standard practices over the years, builder Brookside Development was seeking to build an even more sustainable product that would further increase energy efficiency, while also ...

  15. Survey of Whole House Programs in Midwestern Climates

    SciTech Connect (OSTI)

    McGeough, U.; Baker, W.; Peters, J.; Beitel, A.

    2012-11-01

    In this project, existing single-family whole home energy efficiency programs in cold weather climates, focused on the Midwest, were analyzed in detail to understand program design, including requirements, processes, incentives and outcomes, focusing on savings and participation. The report presents information about specific programs, aggregated program trends and observations, and recommendations for future cold weather climate whole home program design and implementation. This study makes several recommendations to whole home program designers and implementers on improving the cost effectiveness and reach of whole home programs.

  16. Building America Whole-House Solutions for Existing Homes: Evaluation...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Cost-Optimized Solutions, Chicago, Illinois This case study presents information about a ... More Documents & Publications Building Energy Optimization Analysis Method (BEopt) - ...

  17. Building America Whole-House Solutions for New Homes: Winchester...

    Energy Savers [EERE]

    for Home Innovation team to develop and test a new set of high performance homes ... The test home compared theoretical performance characteristics with measured results. ...

  18. New Whole-House Solutions Case Study: Devoted Builders, LLC

    SciTech Connect (OSTI)

    none,

    2013-02-01

    Devoted Builders meets 2012 IECC insulation requirements in the cold climate with R-25 ICF walls, R-25 slab insulation and R-49 spray foam and cellulose attic floors.

  19. New Whole-House Solutions Case Study: Pine Mountain Builders

    SciTech Connect (OSTI)

    none,

    2013-02-01

    Pine Mountain Builders achieved HERS scores as low as 59 and electric bills as low as $50/month with extensive air sealing (blower door tests = 1.0 to 1.8 ACH 50), R-3 XPS sheathing instead of OSB, and higher efficiency heat pumps.

  20. Survey of Whole House Programs in Midwestern Climates

    SciTech Connect (OSTI)

    McGeough, U.; Baker, W.; Peters, J.; Beitel, A.

    2012-11-01

    Existing single family whole home energy efficiency programs in cold weather climates, focused on the Midwest, were analyzed in detail to understand program design, including requirements, processes, incentives and outcomes, focusing on savings and participation. The report presents information about specific programs, aggregated program trends and observations, and recommendations for future cold weather climate whole home program design and implementation. This study makes several recommendations to whole home program designers and implementers on improving the cost-effectiveness and reach of whole home programs.

  1. Building America Whole-House Solutions for New Homes: Urbane...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Case study of Urbane Homes who worked with Building America research partner NAHBRC to build HERS-57 homes with rigid foam insulated slabs and foundation walls, advanced framed ...

  2. Building America Whole-House Solutions for New Homes: Imagine...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Case study of Imagine Homes, who worked with the Building America research partner IBACOS to build HERS-52 homes with spray foam-insulated attics and central fan-integrated supply ...

  3. New Whole-House Solutions Case Study: Shaw Construction, Aspen...

    Energy Savers [EERE]

    Shaw Construction Burlingame Ranch Phase 1 | Aspen, CO PROJECT INFORMATION Construction: New home Type: Single- and multi-family Builder: Shaw Construction, Grand Junction, CO, ...

  4. New Whole-House Solutions Case Study: Tindall Homes, Columbus...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    build 20 luxury homes in northern New Jersey that were more energy efficient than ENERGY STAR and met the 50% energy savings requirements of the federal tax credit for new homes. ...

  5. New Whole-House Solutions Case Study: Green Coast Enterprises...

    Energy Savers [EERE]

    of Energy's Building America and its research team lead Building Science Corporation to build 100 new homes for displaced families returning to New Orleans after Hurricane Katrina. ...

  6. Building America Whole-House Solutions for Existing Homes: Islip...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    PDF icon Islip Housing Authority Energy Efficiency Turnover Protocols - Islip, NY More Documents & Publications Building America Case Studies for Existing Homes: Philadelphia ...

  7. New Whole-House Solutions Case Study: Devoted Builders, LLC,...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    The foam blocks provide a continuous air and thermal boundary from the footer (30 inches below grade) to the roof line. Devoted Builders has continued to work with Building America ...

  8. Building America Whole-House Solutions for Existing Homes: Evaluation...

    Energy Savers [EERE]

    Residential Energy Efficiency Technical Update Meeting: August 2011 2011 Residential Energy Efficiency Technical Update Meeting Summary Report: Denver, Colorado - August 9-11, 2011

  9. New Whole-House Solutions Case Study: Quadrant Homes

    SciTech Connect (OSTI)

    none,

    2013-02-01

    Quadrant moved ducts and high efficiency furnace inside conditioned space on nearly all 300 customizable house plans. The builder uses dry, true factory-assembled walls, extensive air sealing, and just in time delivery for pre-sold homes.

  10. Building America Whole-House Solutions for Existing Homes: Evaluation...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    This case study presents information about a Building America project conducted by the Partnership for Advanced Residential Retrofit team comparing measure packages installed ...

  11. Building America Whole-House Solutions for New Homes: Transformations...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    In 2009, Transformations, Inc. partnered with the Building Science Corporation team to build new net zero energy houses in three developments in Massachusetts that achieve a 45% ...

  12. New Whole-House Solutions Case Study: Tom Walsh & Co.

    SciTech Connect (OSTI)

    none,

    2013-02-01

    Tom Walsh & Companys homes in an urban infill project in Portland achieved meets 2012 IECC insulation requirements in the marine climate with R-21 fiberglass batt walls, R-25 slab insulation and R-49 spray foam and cellulose attic floors.

  13. Building America Whole-House Solutions for Existing Home: Retrofitting...

    Broader source: Energy.gov (indexed) [DOE]

    Insight Homes, Seaford, Delaware Building America Technology Solutions for New and Existing Homes: Innovative Retrofit Foundation Insulation Strategies, Minneapolis, Minnesota

  14. New Whole-House Solutions Case Study: Schneider Homes, Inc.

    SciTech Connect (OSTI)

    none,

    2013-02-01

    Schneider Homes cut energy use by 50% over the 2004 IECC on 28 homes built near Seattle in 2008. Schneider packed the walls with R-23 of blown fiberglass and blanketed the ceiling with R-38 of blown cellulose. Ducts went into conditioned space through open-web floor trusses between floors and air handlers went into an air sealed garage closet.

  15. Building America Whole-House Solutions for New Homes: Lancaster...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    This case study describes a unique vocational program at Lancaster County Career Technology Center in Mount Joy, PA, where high school students are gaining hands-on...

  16. Building America Whole-House Solutions for New Homes: Tindall...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Case study of Tindall Homes who worked with Building America research team IBACOS to build 20 HERS-58 homes with R-49 mixed attic insulation, poly-iso foam in advanced framed ...

  17. Whole House Mechanical Ventilation: A South Chicago Case Study

    SciTech Connect (OSTI)

    2009-09-03

    This case study describes a neighborhood of efficient, healthy, sustainable, affordable homes in South Chicago, IL, that feature structural insulated panels (SIPs), condensing furnaces, sealed combustion water heaters, and efficient lights and appliances.

  18. Existing Whole-House Solutions Case Study: Performance of a Hot-Dry Climate Whole-House Retrofit, Stockton, California

    SciTech Connect (OSTI)

    2014-09-01

    The Alliance for Residential Building Innovation (ARBI) team conducted a deep retrofit project within Stockton’s Large-Scale Retrofit Program that expanded on the standard package by adding HVAC, water heater and window upgrades to the ducting, attic and floor insulation, domestic hot water insulation, envelope sealing, lighting and ventilation upgrades. Post-retrofit site energy savings were 23% compared to the pre-retrofit case.

  19. Practical application of equivalent linearization approaches to nonlinear piping systems

    SciTech Connect (OSTI)

    Park, Y.J.; Hofmayer, C.H.

    1995-05-01

    The use of mechanical energy absorbers as an alternative to conventional hydraulic and mechanical snubbers for piping supports has attracted a wide interest among researchers and practitioners in the nuclear industry. The basic design concept of energy absorbers (EA) is to dissipate the vibration energy of piping systems through nonlinear hysteretic actions of EA!s under design seismic loads. Therefore, some type of nonlinear analysis needs to be performed in the seismic design of piping systems with EA supports. The equivalent linearization approach (ELA) can be a practical analysis tool for this purpose, particularly when the response approach (RSA) is also incorporated in the analysis formulations. In this paper, the following ELA/RSA methods are presented and compared to each other regarding their practice and numerical accuracy: Response approach using the square root of sum of squares (SRSS) approximation (denoted RS in this paper). Classical ELA based on modal combinations and linear random vibration theory (denoted CELA in this paper). Stochastic ELA based on direct solution of response covariance matrix (denoted SELA in this paper). New algorithms to convert response spectra to the equivalent power spectral density (PSD) functions are presented for both the above CELA and SELA methods. The numerical accuracy of the three EL are studied through a parametric error analysis. Finally, the practicality of the presented analysis is demonstrated in two application examples for piping systems with EA supports.

  20. A systematic approach for water recycle system design

    SciTech Connect (OSTI)

    Myers, C.W.; Dave, B.B.

    1995-12-01

    Water reuse is becoming a critical technology for industrial plants to remain competitive as environmental regulations become more stringent and as municipal water demands increase. The basic challenge of water reuse is to meet the water quality requirements of both the plant effluent and the in-plant processes in an economical fashion. The complex nature of water reuse problems demands a systematic approach for achieving solutions. Such an approach has been developed which integrates the plant audit, numerical process simulation, and pilot-scale experiments to optimize reuse system designs in the sense of both technical and economic merits. Two case studies are presented which illustrate some of the capabilities of this highly flexible approach to water reuse. The case of an oil refinery demonstrates the utility of process modelling prior to pilot-level testing, which is then used to determine system operating parameters and costs. The role of numerical process simulation in predicting process water chemistry and overall economics is emphasized in the case of a copper smelting plant.

  1. Test procedures and protocols: Their relevance to the figure of merit for thermal distribution systems. Volume 1: Informal report

    SciTech Connect (OSTI)

    Andrews, J.W.

    1993-09-01

    A conceptual framework is developed that categorizes measurement protocols for forced-air thermal distribution systems in small buildings. This framework is based on the distinction between two generic approaches. The {open_quote}system-comparison{close_quote} approach seeks to determine, via a pair of whole-house energy-use measurements, the difference in energy use between the house with the as-found duct system and the same house with no energy losses attributable to the thermal distribution system. The {open_quote}component loss-factor{close_quote} approach identifies and measures the individual causes of duct losses, and then builds up a value for the net overall duct efficiency, usually with the help of computer simulation. Examples of each approach are analyzed and related to a proposed Figure of Merit for thermal distribution systems. This Figure of Merit would serve as the basis for a Standard Method of Test analogous to those already in place for furnaces, boilers, air conditioners, and heat pumps.

  2. Practical approaches to field problems of stationary combustion systems

    SciTech Connect (OSTI)

    Lee, S.W.

    1997-09-01

    The CANMET Energy Technology Centre (CETC) business plan dictates collaboration with industrial clients and other government agencies to promote energy efficiency, health and safety, pollution reduction and productivity enhancement. The Advanced Combustion Technologies group of CETC provides consultation to numerous organizations in combustion related areas by conducting laboratory and field investigations of fossil fuel-fired combustion equipment. CETC, with its modern research facilities and technical expertise, has taken this practical approach since the seventies and has assisted many organizations in overcoming field problems and in providing cost saving measures and improved profit margins. This paper presents a few selected research projects conducted for industrial clients in north and central America. The combustion systems investigated are mostly liquid fuel fired, with the exception of the utility boiler which was coal-fired. The key areas involved include fuel quality, fuel storage/delivery system contamination, waste derived oils, crude oil combustion, unacceptable pollutant emissions, ambient soot deposition, slagging, fouling, boiler component degradation, and particulate characterization. Some of the practical approaches taken to remedy these field problems on several combustion systems including residential, commercial and industrial scale units are discussed.

  3. Home Design & Remodeling | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Home Design & Remodeling Home Design & Remodeling Ultra-Efficient Home Design Ultra-Efficient Home Design An ultra-efficient home can be designed and built to produce as much energy as it uses -- or even more! Read more Passive Solar Home Design Passive Solar Home Design Passive solar design takes advantage of a building's site, climate, and materials to minimize energy use. Read more Whole-House Systems Approach Whole-House Systems Approach A whole-house systems approach considers the

  4. Intelligent Vehicle Systems: A 4D/RCS Approach

    SciTech Connect (OSTI)

    Madhavan, Raj

    2007-04-01

    This book presents new research on autonomous mobility capabilities and shows how technological advances can be anticipated in the coming two decades. An in-depth description is presented on the theoretical foundations and engineering approaches that enable these capabilities. Chapter 1 provides a brief introduction to the 4D/RCS reference model architecture and design methodology that has proven successful in guiding the development of autonomous mobility systems. Chapters 2 through 7 provide more detailed descriptions of research that has been conducted and algorithms that have been developed to implement the various aspects of the 4D/RCS reference model architecture and design methodology. Chapters 8 and 9 discuss applications, performance measures, and standards. Chapter 10 provides a history of Army and DARPA research in autonomous ground mobility. Chapter 11 provides a perspective on the potential future developments in autonomous mobility.

  5. Case study field evaluation of a systems approach to retrofitting a residential HVAC system

    SciTech Connect (OSTI)

    Walker, Iain S.; McWiliams, Jennifer A.; Konopacki, Steven J.

    2003-09-01

    This case study focusing on a residence in northern California was undertaken as a demonstration of the potential of a systems approach to HVAC retrofits. The systems approach means that other retrofits that can affect the HVAC system are also considered. For example, added building envelope insulation reduces building loads so that smaller capacity HVAC system can be used. Secondly, we wanted to examine the practical issues and interactions with contractors and code officials required to accomplish the systems approach because it represents a departure from current practice. We identified problems in the processes of communication and installation of the retrofit that led to compromises in the final energy efficiency of the HVAC system. These issues must be overcome in order for HVAC retrofits to deliver the increased performance that they promise. The experience gained in this case study was used to optimize best practices guidelines for contractors (Walker 2003) that include building diagnostics and checklists as tools to assist in ensuring the energy efficiency of ''house as a system'' HVAC retrofits. The best practices guidelines proved to be an excellent tool for evaluating the eight existing homes in this study, and we received positive feedback from many potential users who reviewed and used them. In addition, we were able to substantially improve the energy efficiency of the retrofitted case study house by adding envelope insulation, a more efficient furnace and air conditioner, an economizer and by reducing duct leakage.

  6. Biofuels, land and water : a systems approach to sustainability.

    SciTech Connect (OSTI)

    Gopalakrishnan, G.; Negri, M. C.; Wang, M.; Wu, M.; Snyder, S. W.; LaFreniere, L.

    2009-08-01

    There is a strong societal need to evaluate and understand the sustainability of biofuels, especially because of the significant increases in production mandated by many countries, including the United States. Sustainability will be a strong factor in the regulatory environment and investments in biofuels. Biomass feedstock production is an important contributor to environmental, social, and economic impacts from biofuels. This study presents a systems approach where the agricultural, energy, and environmental sectors are considered as components of a single system, and environmental liabilities are used as recoverable resources for biomass feedstock production. We focus on efficient use of land and water resources. We conducted a spatial analysis evaluating marginal land and degraded water resources to improve feedstock productivity with concomitant environmental restoration for the state of Nebraska. Results indicate that utilizing marginal land resources such as riparian and roadway buffer strips, brownfield sites, and marginal agricultural land could produce enough feedstocks to meet a maximum of 22% of the energy requirements of the state compared to the current supply of 2%. Degraded water resources such as nitrate-contaminated groundwater and wastewater were evaluated as sources of nutrients and water to improve feedstock productivity. Spatial overlap between degraded water and marginal land resources was found to be as high as 96% and could maintain sustainable feedstock production on marginal lands. Other benefits of implementing this strategy include feedstock intensification to decrease biomass transportation costs, restoration of contaminated water resources, and mitigation of greenhouse gas emissions.

  7. Approaches to cancer assessment in EPA's Integrated Risk Information System

    SciTech Connect (OSTI)

    Gehlhaus, Martin W.; Gift, Jeffrey S.; Hogan, Karen A.; Kopylev, Leonid; Schlosser, Paul M.; Kadry, Abdel-Razak

    2011-07-15

    The U.S. Environmental Protection Agency's (EPA) Integrated Risk Information System (IRIS) Program develops assessments of health effects that may result from chronic exposure to chemicals in the environment. The IRIS database contains more than 540 assessments. When supported by available data, IRIS assessments provide quantitative analyses of carcinogenic effects. Since publication of EPA's 2005 Guidelines for Carcinogen Risk Assessment, IRIS cancer assessments have implemented new approaches recommended in these guidelines and expanded the use of complex scientific methods to perform quantitative dose-response assessments. Two case studies of the application of the mode of action framework from the 2005 Cancer Guidelines are presented in this paper. The first is a case study of 1,2,3-trichloropropane, as an example of a chemical with a mutagenic mode of carcinogenic action thus warranting the application of age-dependent adjustment factors for early-life exposure; the second is a case study of ethylene glycol monobutyl ether, as an example of a chemical with a carcinogenic action consistent with a nonlinear extrapolation approach. The use of physiologically based pharmacokinetic (PBPK) modeling to quantify interindividual variability and account for human parameter uncertainty as part of a quantitative cancer assessment is illustrated using a case study involving probabilistic PBPK modeling for dichloromethane. We also discuss statistical issues in assessing trends and model fit for tumor dose-response data, analysis of the combined risk from multiple types of tumors, and application of life-table methods for using human data to derive cancer risk estimates. These issues reflect the complexity and challenges faced in assessing the carcinogenic risks from exposure to environmental chemicals, and provide a view of the current trends in IRIS carcinogenicity risk assessment.

  8. Strategy Guideline. Compact Air Distribution Systems

    SciTech Connect (OSTI)

    Burdick, Arlan

    2013-06-01

    This guideline discusses the benefits and challenges of using a compact air distribution system to handle the reduced loads and reduced air volume needed to condition the space within an energy efficient home. The decision criteria for a compact air distribution system must be determined early in the whole-house design process, considering both supply and return air design. However, careful installation of a compact air distribution system can result in lower material costs from smaller equipment, shorter duct runs, and fewer outlets; increased installation efficiencies, including ease of fitting the system into conditioned space; lower loads on a better balanced HVAC system, and overall improved energy efficiency of the home.

  9. Towards Sustainable Watershed Dvelopment: A Geographic Information Systems based Approach

    SciTech Connect (OSTI)

    Bhaduri, Budhendra L

    2006-01-01

    With an unprecedented projection of population and urban growth in the coming decades, assessment of the long-term hydrologic impacts of land use change is crucial for optimizing management practices to control runoff and non-point source (NPS) pollution associated with sustainable watershed development. Land use change, dominated by an increase in urban/impervious areas, can have a significant impact on water resources. Non-point source (NPS) pollution is the leading cause of degraded water quality in the US and urban areas are an important source of NPS pollution. Most planners, government agencies, and consultants lack access to simple impact-assessment tools despite widespread concern over the environmental impacts of watershed development. Before investing in complex analyses and customized data collection, it is often useful to utilize simple screening analyses using data that are already available. In this paper, we discuss such a technique for long-term hydrologic impact assessment (L-THIA) that makes use of basic land use, soils and long-term rainfall data to compare the hydrologic impacts of past, present and any future land use change. Long-term daily rainfall records are used in combination with soils and land use information to calculate average annual runoff and NPS pollution at a watershed scale. Because of the geospatial nature of land use and soils data, and the increasingly widespread use of GIS by planners, government agencies and consultants, the model is integrated with a Geographic Information System (GIS) that allows convenient generation and management of model input and output data, and provides advanced visualization of the model results. An application of the L-THIA/NPS model on the Little Eagle Creek (LEC) watershed near Indianapolis, Indiana is illustrated in this paper. Three historical land use scenarios for 1973, 1984, and 1991 were analyzed to track land use change in the watershed and to assess the impacts of land use change on

  10. A System-of-Systems Approach for Integrated Energy Systems Modeling...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... The IESM can be used to understand and test the impact of new retail market structures and technologies such as DERs, demand-response equipment, and energy management systems on ...

  11. Approaching isotropy in the vortex system of SmFeAs(O,F) at extreme...

    Office of Scientific and Technical Information (OSTI)

    Approaching isotropy in the vortex system of SmFeAs(O,F) at extreme magnetic fields ... Sponsoring Org: NSF Country of Publication: United States Language: English Subject: ...

  12. Systems approach used in the Gas Centrifuge Enrichment Plant

    SciTech Connect (OSTI)

    Rooks, W.A. Jr.

    1982-01-01

    A requirement exists for effective and efficient transfer of technical knowledge from the design engineering team to the production work force. Performance-Based Training (PBT) is a systematic approach to the design, development, and implementation of technical training. This approach has been successfully used by the US Armed Forces, industry, and other organizations. The advantages of the PBT approach are: cost-effectiveness (lowest life-cycle training cost), learning effectiveness, reduced implementation time, and ease of administration. The PBT process comprises five distinctive and rigorous phases: Analysis of Job Performance, Design of Instructional Strategy, Development of Training Materials and Instructional Media, Validation of Materials and Media, and Implementation of the Instructional Program. Examples from the Gas Centrifuge Enrichment Plant (GCEP) are used to illustrate the application of PBT.

  13. TOWARD HIGHLY SECURE AND AUTONOMIC COMPUTING SYSTEMS: A HIERARCHICAL APPROACH

    SciTech Connect (OSTI)

    Lee, Hsien-Hsin S

    2010-05-11

    The overall objective of this research project is to develop novel architectural techniques as well as system software to achieve a highly secure and intrusion-tolerant computing system. Such system will be autonomous, self-adapting, introspective, with self-healing capability under the circumstances of improper operations, abnormal workloads, and malicious attacks. The scope of this research includes: (1) System-wide, unified introspection techniques for autonomic systems, (2) Secure information-flow microarchitecture, (3) Memory-centric security architecture, (4) Authentication control and its implication to security, (5) Digital right management, (5) Microarchitectural denial-of-service attacks on shared resources. During the period of the project, we developed several architectural techniques and system software for achieving a robust, secure, and reliable computing system toward our goal.

  14. Approaching isotropy in the vortex system of SmFeAs(O,F) at extreme...

    Office of Scientific and Technical Information (OSTI)

    vortex system of SmFeAs(O,F) at extreme magnetic fields Citation Details In-Document Search Title: Approaching isotropy in the vortex system of SmFeAs(O,F) at extreme magnetic ...

  15. Systems Evaluation at the Cool Energy House

    SciTech Connect (OSTI)

    J. Williamson and S. Puttagunta

    2013-09-01

    Steven Winter Associates, Inc. (SWA) monitored several advanced mechanical systems within a 2012 deep energy retrofitted home in the small Orlando suburb of Windermere, FL. This report provides performance results of one of the home's heat pump water heaters (HPWH) and the whole-house dehumidifier (WHD) over a six month period. In addition to assessing the energy performance of these systems, this study sought to quantify potential comfort improvements over traditional systems. This information is applicable to researchers, designers, plumbers, and HVAC contractors. Though builders and homeowners can find useful information within this report, the corresponding case studies are a likely better reference for this audience.

  16. An Approach to Autonomous Control for Space Nuclear Power Systems

    SciTech Connect (OSTI)

    Wood, Richard Thomas; Upadhyaya, Belle R.

    2011-01-01

    Under Project Prometheus, the National Aeronautics and Space Administration (NASA) investigated deep space missions that would utilize space nuclear power systems (SNPSs) to provide energy for propulsion and spacecraft power. The initial study involved the Jupiter Icy Moons Orbiter (JIMO), which was proposed to conduct in-depth studies of three Jovian moons. Current radioisotope thermoelectric generator (RTG) and solar power systems cannot meet expected mission power demands, which include propulsion, scientific instrument packages, and communications. Historically, RTGs have provided long-lived, highly reliable, low-power-level systems. Solar power systems can provide much greater levels of power, but power density levels decrease dramatically at {approx} 1.5 astronomical units (AU) and beyond. Alternatively, an SNPS can supply high-sustained power for space applications that is both reliable and mass efficient. Terrestrial nuclear reactors employ varying degrees of human control and decision-making for operations and benefit from periodic human interaction for maintenance. In contrast, the control system of an SNPS must be able to provide continuous operatio for the mission duration with limited immediate human interaction and no opportunity for hardware maintenance or sensor calibration. In effect, the SNPS control system must be able to independently operate the power plant while maintaining power production even when subject to off-normal events and component failure. This capability is critical because it will not be possible to rely upon continuous, immediate human interaction for control due to communications delays and periods of planetary occlusion. In addition, uncertainties, rare events, and component degradation combine with the aforementioned inaccessibility and unattended operation to pose unique challenges that an SNPS control system must accommodate. Autonomous control is needed to address these challenges and optimize the reactor control design.

  17. Development of new materials and approaches to photocatalytic systems

    SciTech Connect (OSTI)

    Linkous, C.A.; Slattery, D.K.

    1998-08-01

    This work describes the authors efforts in developing a dual bed photocatalytic system for water-splitting to make H{sub 2}. Several potential improvements were investigated: the use of carbonate ion in facilitating the O{sub 2} evolution process, the use of NiO{sub x} as a substitute for Ir on TiO{sub 2}, the use of WO{sub 3} as a substitute for TiO{sub 2}, and a study of various classes of organic pigments for photocatalytic application. They have also generated some prototype designs for future dual photocatalyst systems that should enable higher efficiencies.

  18. A multicriteria approach to evaluate district heating system options

    SciTech Connect (OSTI)

    Ghafghazi, Saeed; Sowlati, T.; Sokhansanj, Shahabaddine; Melin, Staffan

    2009-07-01

    District energy systems, in which renewable energy sources may be utilized, are centralized systems to provide energy to residential and commercial buildings. The aim of this paper is to evaluate and rank energy sources available for a case of district heating system in Vancouver, Canada, based on multiple criteria and the view points of different stakeholders, and to show how communication would affect the ranking of alternatives. The available energy sources are natural gas, biomass (wood pellets), sewer heat, and geothermal heat. The evaluation criteria include GHG emissions, particulate matter emissions, maturity of technology, traffic load, and local source. In order to rank the energy options the PROMETHEE method is used. In this paper, two different scenarios were developed to indicate how the communication between the stakeholders would affect their preferences about criteria weights and would change the ranking of alternatives. The result of this study shows that without communication the best energy source for the considered district energy system is different for different stakeholders. While, addressing concerns through efficient communication would result in a general consensus. In this case, wood pellet is the best energy alternative for all the stakeholders.

  19. An Engine System Approach to Exhaust Waste Heat Recovery | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT). deer07_kruiswyk.pdf (1.21 MB) More Documents & Publications An Engine System Approach to Exhaust Waste Heat Recovery Engine System Approach to Exhaust Energy

  20. Approach for evaluating the thermal comfort effects of nonresidential building fenestration systems

    SciTech Connect (OSTI)

    Sullivan, R.; Arasteh, D.; Papamichael, K.; Selkowitz, S.

    1988-03-01

    This paper documents an approach for evaluating the comfort impacts associated with varying fenestration system parameters primarily under the influence of direct solar radiation. The authors present a method of evaluation in which it was shown that an annual comfort index could be determined by knowing the fenestration system solar heat gain coefficient and aperture size.

  1. Approaches to 30% Energy Savings at the Community Scale in the Hot-Humid Climate

    SciTech Connect (OSTI)

    Thomas-Rees, S.; Beal, D.; Martin, E.; Fonorow, K.

    2013-03-01

    BA-PIRC has worked with several community-scale builders within the hot humid climate zone to improve performance of production, or community scale, housing. Tommy Williams Homes (Gainesville, FL), Lifestyle Homes (Melbourne, FL), and Habitat for Humanity (various locations, FL) have all been continuous partners of the BA Program and are the subjects of this report to document achievement of the Building America goal of 30% whole house energy savings packages adopted at the community scale. The scope of this report is to demonstrate achievement of these goals though the documentation of production-scale homes built cost-effectively at the community scale, and modeled to reduce whole-house energy use by 30% in the Hot Humid climate region. Key aspects of this research include determining how to evolve existing energy efficiency packages to produce replicable target savings, identifying what builders' technical assistance needs are for implementation and working with them to create sustainable quality assurance mechanisms, and documenting the commercial viability through neutral cost analysis and market acceptance. This report documents certain barriers builders overcame and the approaches they implemented in order to accomplish Building America (BA) Program goals that have not already been documented in previous reports.

  2. Scientific Opportunities for Monitoring at Environmental Remediation Sites (SOMERS): Integrated Systems-Based Approaches to Monitoring

    SciTech Connect (OSTI)

    Bunn, Amoret L.; Wellman, Dawn M.; Deeb, Rula A.; Hawley, Elizabeth L.; Truex, Michael J.; Peterson, Mark; Freshley, Mark D.; Pierce, Eric M.; McCord, John; Young, Michael H.; Gilmore, Tyler J.; Miller, Rick; Miracle, Ann L.; Kaback, Dawn; Eddy-Dilek, Carol; Rossabi, Joe; Lee, Michelle H.; Bush, Richard P.; Beam , Paul; Chamberlain, G. M.; Marble, Justin; Whitehurst, Latrincy; Gerdes, Kurt D.; Collazo, Yvette

    2012-05-15

    Through an inter-disciplinary effort, DOE is addressing a need to advance monitoring approaches from sole reliance on cost- and labor-intensive point-source monitoring to integrated systems-based approaches such as flux-based approaches and the use of early indicator parameters. Key objectives include identifying current scientific, technical and implementation opportunities and challenges, prioritizing science and technology strategies to meet current needs within the DOE complex for the most challenging environments, and developing an integrated and risk-informed monitoring framework.

  3. Building America Whole-House Solutions for Existing Homes: Performance of a Hot-Dry Climate Whole-House Retrofit, Stockton, California (Fact Sheet)

    Broader source: Energy.gov [DOE]

    This case study describes a deep energy retrofit project on a home in Stockton, California, that reduced the energy use of the home by 23%

  4. Design approaches and parameters for magnetically levitated transport systems. [Null flux suspension (Maglev)

    SciTech Connect (OSTI)

    Danby, G.T.; Powell, J.R.

    1988-01-01

    Mechanically levitated transport system approaches are assessed with regard to thrust power needs, track cost, suspension stability, and safety. The null flux suspension appears as the favored approach, having the least thrust power requirements, highest stability, and lowest amount of track material. Various null flux configurations are described together with their operating parameters. The Linear Synchronous Motor (LSM) propulsion system is also described for propelling the suspended vehicles. Cryogenics and superconductivity aspects are discussed and the effect of high T/sub c/ superconductors evaluated. 13 refs., 16 figs., 2 tabs.

  5. Hyperspherical approach for the trinucleon system with hard-core potential

    SciTech Connect (OSTI)

    Das, T.K.; Coelho, H.T. ); Torreao, J.R.A. )

    1992-06-01

    In this work we present a method for solving the hard-core (HC) three-body problem by the hyperspherical approach. We restrict ourselves to the totally symmetric {ital S} state of the dominant trinucleon system interacting via a central spin-dependent HC potential, but the method can be generalized to include other states.

  6. Infiltration Effects on Residential Pollutant Concentrations for Continuous and Intermittent Mechanical Ventilation Approaches

    SciTech Connect (OSTI)

    Sherman, Max; Logue, Jennifer; Singer, Brett

    2010-06-01

    The prevailing residential ventilation standard in North America, American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Standard 62.2, specifies volumetric airflow requirements as a function of the overall size of the home and the number of bedrooms, assumes a fixed, minimal amount of infiltration, and requires mechanical ventilation to achieve the remainder. The standard allows for infiltration credits and intermittent ventilation patterns that can be shown to provide comparable performance. Whole-house ventilation methods have a substantial effect on time-varying indoor pollutant concentrations. If alternatives specified by Standard 62.2, such as intermittent ventilation, are used, short-term pollutant concentrations could exceed acute health standards even if chronic health standards are met.The authors present a methodology for comparing ASHRAE- and non-ASHRAE-specified ventilation scenarios on relative indoor pollutant concentrations. We use numerical modeling to compare the maximum time-averaged concentrations for acute exposure relevant (1-hour, 8-hour, 24-hour ) and chronic exposure relevant (1-year) time periods for four different ventilation scenarios in six climates with a range of normalized leakage values. The results suggest that long-term concentrations are the most important metric for assessing the effectiveness of whole-house ventilation systems in meeting exposure standards and that, if chronic health exposure standards are met, acute standards will also be met.

  7. Approaches for scalable modeling and emulation of cyber systems : LDRD final report.

    SciTech Connect (OSTI)

    Mayo, Jackson R.; Minnich, Ronald G.; Armstrong, Robert C.; Rudish, Don W.

    2009-09-01

    The goal of this research was to combine theoretical and computational approaches to better understand the potential emergent behaviors of large-scale cyber systems, such as networks of {approx} 10{sup 6} computers. The scale and sophistication of modern computer software, hardware, and deployed networked systems have significantly exceeded the computational research community's ability to understand, model, and predict current and future behaviors. This predictive understanding, however, is critical to the development of new approaches for proactively designing new systems or enhancing existing systems with robustness to current and future cyber threats, including distributed malware such as botnets. We have developed preliminary theoretical and modeling capabilities that can ultimately answer questions such as: How would we reboot the Internet if it were taken down? Can we change network protocols to make them more secure without disrupting existing Internet connectivity and traffic flow? We have begun to address these issues by developing new capabilities for understanding and modeling Internet systems at scale. Specifically, we have addressed the need for scalable network simulation by carrying out emulations of a network with {approx} 10{sup 6} virtualized operating system instances on a high-performance computing cluster - a 'virtual Internet'. We have also explored mappings between previously studied emergent behaviors of complex systems and their potential cyber counterparts. Our results provide foundational capabilities for further research toward understanding the effects of complexity in cyber systems, to allow anticipating and thwarting hackers.

  8. 300 Area dangerous waste tank management system: Compliance plan approach. Final report

    SciTech Connect (OSTI)

    1996-03-01

    In its Dec. 5, 1989 letter to DOE-Richland (DOE-RL) Operations, the Washington State Dept. of Ecology requested that DOE-RL prepare ``a plant evaluating alternatives for storage and/or treatment of hazardous waste in the 300 Area...``. This document, prepared in response to that letter, presents the proposed approach to compliance of the 300 Area with the federal Resource Conservation and Recovery Act and Washington State`s Chapter 173-303 WAC, Dangerous Waste Regulations. It also contains 10 appendices which were developed as bases for preparing the compliance plan approach. It refers to the Radioactive Liquid Waste System facilities and to the radioactive mixed waste.

  9. A system dynamics approach to intermodalism at the Port of Lewiston

    SciTech Connect (OSTI)

    Sebo, D.

    1996-08-01

    Intermodalism refers to interconnections among modes of transportation, e.g., road, rail, water, and air. Effective intermodal planning must cross boundaries between the public and private sectors as well as transportation modes. The development of an effective and efficient intermodal transportation system requires the identification of barriers to intermodal transportation and the investigation of the impact of proposed changes in infrastructure development, policies, regulations, and planning. A systems approach is necessary to adequately represent the interaction between the sometimes incompatible concerns of all modes and stakeholders. A systems dynamics model of intermodalism at the Port of Lewiston has been developed to highlight leverage points, hidden assumptions, second order effects resulting from feedback loops and system drivers. The purpose of this document is to present the results of the system dynamics model work.

  10. The Mirror Fusion Test Facility cryogenic system: Performance, management approach, and present equipment status

    SciTech Connect (OSTI)

    Slack, D.S.; Chronis, W.C.

    1987-06-08

    The cryogenic system for the Mirror Fusion Test Facility (MFTF) is a 14-kW, 4.35-K helium refrigeration system that proved to be highly successful and cost-effective. All operating objectives were met, while remaining within a few percent of initial cost and schedule plans. The management approach used in MFTF allowed decisions to be made quickly and effectively, and it helped keep costs down. Manpower levels, extent and type of industrial participation, key aspects of subcontractor specifications, and subcontractor interactions are reviewed, as well as highlights of the system tests, operation, and present equipment status. Organizations planning large, high-technology systems may benefit from this experience with the MFTF cryogenic system.

  11. Design an optimum safety policy for personnel safety management - A system dynamic approach

    SciTech Connect (OSTI)

    Balaji, P.

    2014-10-06

    Personnel safety management (PSM) ensures that employee's work conditions are healthy and safe by various proactive and reactive approaches. Nowadays it is a complex phenomenon because of increasing dynamic nature of organisations which results in an increase of accidents. An important part of accident prevention is to understand the existing system properly and make safety strategies for that system. System dynamics modelling appears to be an appropriate methodology to explore and make strategy for PSM. Many system dynamics models of industrial systems have been built entirely for specific host firms. This thesis illustrates an alternative approach. The generic system dynamics model of Personnel safety management was developed and tested in a host firm. The model was undergone various structural, behavioural and policy tests. The utility and effectiveness of model was further explored through modelling a safety scenario. In order to create effective safety policy under resource constraint, DOE (Design of experiment) was used. DOE uses classic designs, namely, fractional factorials and central composite designs. It used to make second order regression equation which serve as an objective function. That function was optimized under budget constraint and optimum value used for safety policy which shown greatest improvement in overall PSM. The outcome of this research indicates that personnel safety management model has the capability for acting as instruction tool to improve understanding of safety management and also as an aid to policy making.

  12. Towards Composing Data Aware Systems Biology Workflows on Cloud Platforms: A MeDICi-based Approach

    SciTech Connect (OSTI)

    Gorton, Ian; Liu, Yan; Yin, Jian; Kulkarni, Anand V.; Wynne, Adam S.

    2011-09-08

    Cloud computing is being increasingly adopted for deploying systems biology scientific workflows. Scientists developing these workflows use a wide variety of fragmented and competing data sets and computational tools of all scales to support their research. To this end, the synergy of client side workflow tools with cloud platforms is a promising approach to share and reuse data and workflows. In such systems, the location of data and computation is essential consideration in terms of quality of service for composing a scientific workflow across remote cloud platforms. In this paper, we describe a cloud-based workflow for genome annotation processing that is underpinned by MeDICi - a middleware designed for data intensive scientific applications. The workflow implementation incorporates an execution layer for exploiting data locality that routes the workflow requests to the processing steps that are colocated with the data. We demonstrate our approach by composing two workflowswith the MeDICi pipelines.

  13. High Level Computational Chemistry Approaches to the Prediction of Energetic Properties of Chemical Hydrogen Storage Systems

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Level Computational Chemistry Approaches to the Prediction of the Energetic Properties of Chemical Hydrogen Storage Systems David A. Dixon Chemistry, University of Alabama, Tuscaloosa, AL Cast: Myrna Hernandez-Matus, Daniel Grant, Jackson Switzer, Jacob Batson, Ronita Folkes, Minh Nguyen Anthony J. Arduengo & co-workers Maciej Gutowski (PNNL) Robert Ramsay Chair Fund Shelby Hall Funding provided in part by the Department of Energy, Office of Energy Efficiency and Renewable Energy under the

  14. A Systems Biology Approach to Infectious Disease Research: Innovating the Pathogen-Host Research Paradigm

    SciTech Connect (OSTI)

    Aderem, Alan; Adkins, Joshua N.; Ansong, Charles; Galagan, James; Kaiser, Shari; Korth, Marcus J.; Law, G. L.; McDermott, Jason E.; Proll, Sean; Rosenberger, Carrie; Schoolnik, Gary; Katze, Michael G.

    2011-02-01

    The 20th century was marked by extraordinary advances in our understanding of microbes and infectious disease, but pandemics remain, food and water borne illnesses are frequent, multi-drug resistant microbes are on the rise, and the needed drugs and vaccines have not been developed. The scientific approaches of the pastincluding the intense focus on individual genes and proteins typical of molecular biologyhave not been sufficient to address these challenges. The first decade of the 21st century has seen remarkable innovations in technology and computational methods. These new tools provide nearly comprehensive views of complex biological systems and can provide a correspondingly deeper understanding of pathogen-host interactions. To take full advantage of these innovations, the National Institute of Allergy and Infectious Diseases recently initiated the Systems Biology Program for Infectious Disease Research. As participants of the Systems Biology Program we think that the time is at hand to redefine the pathogen-host research paradigm.

  15. Integration of distributed resources in electric utility systems: Current interconnection practice and unified approach. Final report

    SciTech Connect (OSTI)

    Barker, P.; Leskan, T.; Zaininger, H.; Smith, D.

    1998-11-01

    Deregulation of the electric utility industry, new state and federal programs, and technology developments are making distributed resources (DR) an increasingly utilized option to provide capacity for growing or heavily loaded electric power systems. Optimal DR placement near loads provides benefits not attainable from bulk generation system additions. These include reduced loading of the T and D system, reduced losses, voltage support, and T and D equipment upgrade deferments. The purpose of this document is to review existing interconnection practices and present interconnection guidelines are relevant to the protection, control, and data acquisition requirements for the interconnection of distributed resources to the utility system. This is to include protection performance requirements, data collection and reporting requirements, on-line communication requirements, and ongoing periodic documentation requirements. This document also provides guidelines for the practical placement and sizing of resources as pertinent to determining the interconnection equipment and system control requirements. The material contained herein has been organized into 4 sections dealing with application issues, existing practices, a unified interconnection approach, and future work. Section 2 of the report discusses the application issues associated with distributed resources and deals with various engineering issues such as overcurrent protection, voltage regulation, and islanding. Section 3 summarizes the existing utility interconnection practices and guidelines as determined from the documents provided by participating utilities. Section 4 presents a unified interconnection approach that is intended to serve as a guide for interconnection of distributed resources to the utility system. And finally, Section 5 outlines possible future areas of study to expand upon the topics discussed in this report.

  16. An Integrated Waste-Management System and Consent-Based Approach to Siting

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    An Integrated Waste-Management System and Consent-Based Approach to Siting Consent-Based Siting Initiative Kick-Off Meeting Renaissance Washington, D.C. Downtown Hotel January 20, 2016 FULL TRANSCRIPT Mr. Jim Hamilton. So good afternoon, welcome and thank you for being here. And for those joining us from earlier time zones on the webinar and conference call, good morning. My name is Jim Hamilton. I am part of the North Wind Consent-Based Siting Team advising the Department and I will be

  17. Building America Whole-House Solutions for New Homes: High-Performance...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ducts located fully within conditioned space, ducts in sealed attics, and a ... in Hot-Dry Climates Ducts in Conditioned Space - Building America Top Innovation Vol. 9: ...

  18. Building America Whole-House Solutions for New Homes: Tommy Williams...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of 2.7 ACH50. PDF icon Tommy Williams Homes: Longleaf Village & Belmont - Gainesville, FL More Documents & Publications Building America Efficient Solutions for New Homes Case ...

  19. New Whole-House Solutions Case Study: S&A Homes; Pittsburgh,...

    Energy Savers [EERE]

    Fresh air is ducted from outside to the return plenum, and a fan-cycler provides ASHRAE ... and fan-cycler for 50% run time to meet ASHRAE 62.2. Envelope: * 2x6, 24-inch-on-center ...

  20. New Whole-House Solutions Case Study: David Weekley Homes, Houston...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    The team used advanced framing techniques that include open headers over windows, 2x6 24-inch on-center framing with framing member alignment, two-stud corners, insulated corners, ...

  1. New Whole-House Solutions Case Study: Tommy Williams Homes, Longleaf...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Ladder T framing provides extra room for insulation in the walls, which are filled with blown fiberglass; R-30 blown fiberglass covers the ceiling deck of the vented attic. The ...

  2. Existing Whole-House Solutions Case Study: Passive Room-to-Room Air Transfer, Fresno, California

    SciTech Connect (OSTI)

    D. Stecher and A. Poershke

    2014-02-01

    In this project, IBACOS, a U.S. Department of Energy Building America team, assessed a strategy for providing conditioned air to bedrooms when the bedroom doors are closed and measured potential thermal discomfort that occupants may experience when this strategy is used. Builders can use this information to discuss space conditioning options for low-load houses with their clients to determine acceptable comfort levels for occupants in these cost-optimized, energy-efficient houses.

  3. Building America Whole-House Solutions for New Homes: Tom Walsh...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    who worked with Building America research partner BIRA to design HERS 59 homes with ducts in conditioned space in dropped ceiling soffits, extensive air sealing, and extensve...

  4. Building America Whole-House Solutions for New Homes: Tom Walsh...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    & Co., Portland, Oregon Case study of Tom Walsh & Co., who worked with Building America research partner BIRA to design HERS 59 homes with ducts in conditioned space in dropped...

  5. New Whole-House Solutions Case Study: Artistic Homes, Albuquerque, NM

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Artistic Homes of Albuquerque was the first production home builder in the United States to offer a true net-zero upgrade option on all of its homes. According to co-owner Tom Wade, in 2010, 45% of the homes Artistic sold were built to near or at true zero net energy (with HERS scores of under 5). Artistic's standard home averaged a low HERS score of 51. "Zero energy was not much harder than what we were already doing. When we sat down with our subs and told them our goals, they got excited

  6. New Whole-House Solutions Case Study: Grupe Carsten Crossings, Rocklin, CA

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    the volatile California housing market, energy efficient construction has helped Stockton area home builder Grupe to stand out from the competition. The production builder's 144-home Carsten Crossings in Rocklin, CA, outsold the competition two to one in a very tough Sacramento home market. "The zero energy features of these homes definitely helped us close deals," said Mark Fischer, a senior vice president at Grupe. Grupe sold 23 of its first 30 homes in the first three months, even

  7. New Whole-House Solutions Case Study: Imagine Homes, San Antonio, TX

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Founded in 2006, Imagine Homes of San Antonio has worked with DOE's Building America research team IBACOS to build more than 300 high-performance homes that achieve HERS energy efficiency scores from 52 to 65. Imagine Homes was also the first San Antonio builder to certify all of its homes to both the federal ENERGY STAR program and the Build San Antonio Green program. The local company has sold 77 homes per year over the last 4 years in a market flooded with just-to- code homes by national

  8. New Whole-House Solutions Case Study: John Wesley Miller Companies, Tucson, AZ

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    home visionary John Wesley Miller teamed with the U.S. Department of Energy to build two zero-energy homes at his award-winning 99-unit development in Tucson's historic Armory Park neighborhood. Miller was one of four builders selected to work on DOE's net zero- energy homes initiative. Through the initiative, Miller worked with the National Association of Home Builders Research Center (NAHBRC), the National Renewable Energy Laboratory, Devereaux and Associates Architects, and a team of

  9. New Whole-House Solutions Case Study: Nelson Construction, Farmington, CT

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Nelson Construction partnered with Building America research team Building Science Corporation to design and test 10 high-performance homes in Farmington, Connecticut. Completed after the housing downturn in April 2009, all homes sold within 2 months of being listed at selling prices starting at $649,000. The team designed a building enclosure with superior thermal and air boundaries that exceed 2012 IECC requirements. This included R-13 foam- sheathed walls filled with R-19 cellulose, R-50

  10. New Whole-House Solutions Case Study: Rural Development Inc., Wisdom Way Solar Village, Greenfield, MA

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    With design assistance and energy analysis from the U.S. Department of Energy's CARB Building America research team, led by Steven Winter Associates, the nonprofit builder Rural Development, Inc., built Wisdom Way Solar Village, a community of 20 energy-efficient solar duplexes in western Massachusetts in 2010. The homes achieve HERS scores of 8 to 18 with a highly insulated enclosure, energy-saving equipment, and solar water heating to give home owners heating savings of nearly $2,200 per year.

  11. New Whole-House Solutions Case Study: Treasure Homes, Sacramento, CA

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Treasure Homes' Fallen Leaf at Riverbend, a 32-home development started in 2006, is the first solar community built in Sacramento. Homes in Fallen Leaf save their homeowners as much as 50% on their utility costs. Treasure Homes worked with Sacramento Municipal Utility District (SMUD), the U.S. Department of Energy's Building America program, the National Renewable Energy Laboratory (NREL), and consultant ConSol, a Building America team lead on the project. The home's energy-efficient building

  12. Whole house fenestration energy consumption as a function of variable window air leakage rates

    SciTech Connect (OSTI)

    Kehrli, D.

    1995-09-01

    Residential building energy consumption is dependent on many variables. The heat loss or gain attributable to fenestration products can be a significant portion of the whole building load. The fenestration industry is current developing and implementing new test methods and rating procedures to more accurately account for fenestration energy transfer. One of the tools being developed by the National Fenestration Rating Council (NFRC) is a PC-based program called Residential Fenestration (RESFEN) heating and cooling load use and costs. This paper will provide a review of the energy and cost impacts that variable air leakage rates of several types of window products can have on overall window energy usage as modeled in four typical building designs located in the US. The analysis was performed with the RESFEN software as part of an NFRC sensitivity study on this issue.

  13. Building America Whole-House Solutions for New Homes: The Performance...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Home, Old Greenwich, Connecticut (Fact Sheet) The first Challenge Home built in New England features cool-roof shingles, HERS 20-42, and walls densely packed with blown fiberglass. ...

  14. New Whole-House Solutions Case Study: Pulte Homes, Las Vegas, Nevada

    SciTech Connect (OSTI)

    none,

    2013-09-01

    The builder teamed with Building Science Corporation to design HERS-54 homes with high-efficiency HVAC with ducts in conditioned space, jump ducts, and a fresh air intake; advanced framed walls; low-e windows; and PV roof tiles.

  15. New Whole-House Solutions Case Study: Rural Development, Greenfield, Massachusetts

    SciTech Connect (OSTI)

    none,

    2013-09-01

    This builder worked with Consortium for Advanced Residential Buildings to design affordable HERS-8 homes (60 w/o PV), with double-stud walls heavy insulation, low-load sealed-combustion gas space heaters, triple-pane windows, solar water heating, and PV

  16. New Whole-House Solutions Case Study: John Wesley Miller, Tucson, Arizona

    SciTech Connect (OSTI)

    none,

    2013-09-01

    This builder worked with the National Association of Home Builders Research Center to build two net-zero energy homes with foam-sheathed masonry walls, low-E windows 2.9 ACH50 air sealing, transfer grilles, ducts in insulated attic, PV, and solar water heating.

  17. New Whole-House Solutions Case Study: Treasure Homes, Sacramento, California

    SciTech Connect (OSTI)

    none,

    2013-09-01

    The builder worked with SMUD, DOE, NREL, and ConSol to build HERS-54 homes with high-efficiency HVAC, ducts buried in attic insulation, SmartVent cooling, and rooftop PV..

  18. Building America Whole-House Solutions for New Homes: Zero Energy...

    Energy Savers [EERE]

    The 62-until Spring Lake project developed by Mutual Housing California is the first ... Ready Home Case Study: Mutual Housing California, Mutual Housing at Spring Lake, ...

  19. Existing Whole-House Solutions Case Study: Greenbelt Homes, Inc. Pilot Retrofit Project

    SciTech Connect (OSTI)

    2015-06-01

    In the fall of 2010, a multiyear pilot energy efficiency retrofit project was undertaken by Greenbelt Homes, Inc., (GHI) a 1,566 home cooperative of circa 1930 and 1940 homes in Greenbelt, Maryland. GHI established this pilot project to serve as a basis for decision making for the rollout of a community-wide upgrade program that will incorporate energy efficiency improvements to the building envelope and mechanical equipment. With the community upgrade fully funded by the cooperative through their membership without outside subsidies, this project presents a unique opportunity to evaluate and prioritize the wide range of benefits of high-performance retrofits based on member experience with and acceptance of the retrofit measures implemented during the pilot project. Addressing the complex interactions between benefits, trade-offs, construction methods, project management implications, realistic upfront costs, financing, and other considerations, serves as a case study for energy retrofit projects that include high-performance technologies based on the long-term value to the homeowner. The pilot project focused on identifying the added costs and energy-savings benefits of improvements. Phase 1—baseline evaluation for a representative set of 28 homes sited in seven buildings; Phase 2—installation of the building envelope improvements and continued monitoring of the energy consumption for the heating season; Phase 3—energy simulations supporting recommendations for HVAC and water heating upgrades.

  20. New Whole-House Case Study: William Ryan Homes, Tampa, Florida

    SciTech Connect (OSTI)

    none,

    2013-06-01

    The builder worked with Consortium for Advanced Residential Buildings to design HERS-65 homes with energy-efficient heat pumps and programmable thermostats with humidity controls, foam-filled concrete block walls, draining house wrap, and airsealed kneewalls.

  1. New Whole-House Solutions Case Study: Imagine Homes, San Antonio, Texas

    SciTech Connect (OSTI)

    none,

    2012-04-01

    The builder worked with IBACOS to build HERS-52 homes with spray foam-insulated attics and central fan-integrated supply ventilation

  2. New Whole-House Solutions Case Study: CDC Realty, Tucson, Arizona

    SciTech Connect (OSTI)

    none,

    2013-09-01

    This builder worked with Building Science Corporation to design HERS-54 homes with ducts in insulated attics, solar water heating, tight air sealing, and rigid foam exterior sheathing.

  3. Building America Whole-House Solutions for New Homes: Green Coast...

    Energy Savers [EERE]

    foundations, with borate pressure-treated lumber, wind-resistant OSB sheathing, hurricane strapping, roofing membrane, and closed-cell spray foam in attic, walls, and under floor. ...

  4. New Whole-House Solutions Case Study: Nelson Construction, Farmington, Connecticut

    SciTech Connect (OSTI)

    none,

    2012-04-01

    The builder worked with Building Science Corporation to design ten HERS 53 homes with ICF foundations, foam-sheathed above-grade walls, and high-efficiency furnaces with fresh air intake and jump ducts.

  5. Building America Whole-House Solutions for New Homes: A Production...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Energy's Building America research team IBACOS to create this home, evaluate advanced building technologies, and use the home as a marketing tool for potential homebuyers ...

  6. Building America Whole-House Solutions for New Homes: New Town...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    New Town Builders, a builder of energy efficient homes in Denver, Colorado, offers a zero ... of Zero Energy Center" linked to its model home in the Stapleton community of Denver. ...

  7. Building America Whole-House Solutions for New Homes: Nexus EnergyHomes- Frederick, Maryland

    Broader source: Energy.gov [DOE]

    This new duplex home successfully combines affordability with state-of-the-art efficiency and indoor environmental quality, achieving the highest rating possible under the National Green Building Standard

  8. New Whole-House Solutions Case Study: Shaw Construction, Aspen, Colorado

    SciTech Connect (OSTI)

    none,

    2013-09-01

    This builder worked with Building Science Corporation to design affordable HERS-54 townhouses with central solar radiator space heating, PV, R-28 closed-cell spray foam under slab and R-26 in advanced framed walls, and rigid polyiso on inside of basement walls

  9. Building America Whole-House Solutions for New Homes: Nelson Construction, Farmington, Connecticut

    Broader source: Energy.gov [DOE]

    Case study of Nelson Construction, who worked with the Building America research partner Building Science Corporation to design ten HERS 53 homes with ICF foundations, foam-sheathed above-grade walls, and high-effciency furnaces with fresh air intake and jump ducts.

  10. Building America Whole-House Solutions for New Homes: David Weekely Homes, Houston, Texas

    Broader source: Energy.gov [DOE]

    Case study of David Weekley Homes, who worked with Building America research partner Building Science Corporation to design HERS-59 homes with advanced framed walls, airtight drywall, and rigid foam wall sheathing.

  11. Building America Whole-House Solutions for New Homes: Schneider Homes, Burien, Washington

    Broader source: Energy.gov [DOE]

    Case study of Schneider Homes who worked with Building America research partner WSU Extension Energy Office to design HERS 65 homes with high-efficiency furnaces in an air- sealed garage closet with ducts in conditioned space, 80% CFL lighting, ENERGY STAR appliances, air-tight drywall, and air sealing of attic hatches.

  12. Building America Whole-House Solutions for New Homes: Pine Mountain Builders, Pine Mountain, Georgia

    Broader source: Energy.gov [DOE]

    Case study of Pine Mountain Builders who worked with Building America research partners IBACOS and Southface Energy Institute to design HERS-59 homes with air-tight 1.0-1.8 ACH50 construction, spray-foamed walls and attics, and high-efficiency heat pumps with fresh-air intake.

  13. New Whole-House Solutions Case Study: New Tradition Homes, Vancouver...

    Energy Savers [EERE]

    For homes built with crawlspaces, New Tradition employs extensive grading so that the ... New Tradition designs for high indoor air quality in its tightly constructed homes, which ...

  14. New Whole-House Solutions Case Study: William Ryan Homes, Tampa...

    Energy Savers [EERE]

    as standard practice in all of its new homes. Building America's Consortium for Advanced Residential Buildings (CARB) analyzed nine new house designs by the builder and found ...

  15. New Whole-House Solutions Case Study: Tom Walsh & Co., Portland...

    Energy Savers [EERE]

    the New Columbia neighborhood in Portland, Oregon. Twenty of the homes were built in phase two of the project with the goal of earning the 2,000 federal tax credit for new ...

  16. New Whole-House Solutions Case Study: Quadrant Homes, Kent, WA

    Energy Savers [EERE]

    Kentlake Highlands | Kent, WA PROJECT INFORMATION Construction: New home Type: ... hundreds of builders were left sitting on thousands of unsold new homes, but not Quadrant. ...

  17. Building America Whole-House Solutions for New Homes: Treasure Homes, Sacramento, California

    Broader source: Energy.gov [DOE]

    Case study of Treasure Homes, who worked with SMUD, DOE, NREL, and ConSol to build HERS-54 homes with high-efficiency HVAC, ducts buried in attic insulation, SmartVent cooling, and rooftop PV.

  18. Building America Whole-House Solutions for New Homes: John Wesley Miller, Tucson, Arizona

    Broader source: Energy.gov [DOE]

    Case study of John Wesley Miller Companies, who worked with the NAHBRC to build two net-zero energy homes with foam-sheathed masonry walls, low-E windows 2.9 ACH50 air sealing, transfer grilles, ducts in insulated attic, PV, and solar water heating.

  19. Building America Whole-House Solutions for New Homes: CDC Realty Inc., Tucson, Arizona

    Broader source: Energy.gov [DOE]

    Case study of CDC Realty Inc. who worked with Building America research partner Building Science Corporation to design HERS-54 homes with ducts in insulated attics, solar water heating, tight air sealing, and rigid foam exterior sheathing.

  20. Building America Whole-House Solutions for New and Existing Homes...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Sealed duct penetrations. Photo courtesy of the Gas Technology Institute. Energy Savings with Acceptable Indoor Air Quality Through Improved Air Flow ...

  1. Building America Whole-House Solutions for New Homes: Pine Mountain...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    research partners IBACOS and Southface Energy Institute to design HERS-59 homes with air-tight ... PDF icon Pine Mountain Builders - Georgia More Documents & Publications Building ...

  2. Building America Whole-House Solutions for New Homes: Rural Developmen...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Development, Inc., Greenfield, Massachusetts Case study of Rural Development Inc. who worked with Building America research partner CARB to design affordable HERS-8 homes (60 ...

  3. New Whole-House Solutions Case Study: S&A Homes, Pittsburgh, Pennsylvania

    SciTech Connect (OSTI)

    none,

    2013-09-01

    This builder worked with IBACOS to design urban infill HERS-51 homes with compact duct layout in conditioned space, foam insulated precast concrete foundations, high-efficiency HVAC, and tankless water heaters

  4. Existing Whole-House Solutions Case Study: Community-Scale Energy Modeling - Southeastern United States

    SciTech Connect (OSTI)

    2014-12-01

    Community-scale energy modeling and testing are useful for determining energy conservation measures that will effectively reduce energy use. To that end, IBACOS analyzed pre-retrofit daily utility data to sort homes by energy consumption, allowing for better targeting of homes for physical audits. Following ASHRAE Guideline 14 normalization procedures, electricity consumption of 1,166 all-electric, production-built homes was modeled. The homes were in two communities: one built in the 1970s and the other in the mid-2000s.

  5. New Whole-House Solutions Case Study: Tindall Homes, Columbus, New Jersey

    SciTech Connect (OSTI)

    none,

    2012-04-01

    The builder worked with IBACOS to build 20 HERS-58 homes with R-49 mixed attic insulation, poly-iso foam in advanced framed walls, precast concrete basement walls with rigid foam, tight airsealing, and HRV

  6. New Whole-House Solutions Case Study: A Production Builder's Passive House - Denver, Colorado

    SciTech Connect (OSTI)

    2015-05-01

    Brookfield Home’s first project is in a community called Midtown in Denver, Colorado, in which the builder took on the challenge of increased energy efficiency by creating a Passive House (PH)-certified model home. Brookfield worked with the U.S. Department of Energy’s Building America research team IBACOS to create the home, evaluate advanced building technologies, and use the home as a marketing tool for potential homebuyers. Brookfield also worked with KGA studio architects to create a new floor plan that would be constructed to the PH standard as an upgrade option.

  7. Existing Whole-House Solutions Case Study: Cascade Apartments - Deep Energy Multifamily Retrofit

    SciTech Connect (OSTI)

    2014-02-01

    In December of 2009-10, King County Housing Authority (KCHA) implemented energy retrofit improvements in the Cascade multifamily community, located in Kent, Washington, which resulted in annual energy cost savings of 22%, improved comfort and air quality for residents, and increased durability of the units. This research effort involved significant coordination from stakeholders KCHA, WA State Department of Commerce, utility Puget Sound Energy, and Cascade tenants. This report focuses on the following three primary Building America research questions: 1. What are the modeled energy savings using DOE low income weatherization approved TREAT software? 2. How did the modeled energy savings compare with measured energy savings from aggregate utility billing analysis? 3. What is the Savings to Investment Ratio of the retrofit package after considering utility window incentives and KCHA capital improvement funding.

  8. New Whole-House Solutions Case Study: Tommy Williams Homes, Gainesville, Florida

    SciTech Connect (OSTI)

    None

    2012-04-01

    This builder partnered with Building America to build HERS-58 homes with foam gaskets at sill and top plates, fresh air intakes, SEER 16/HSPF 9.5 heat pumps, and tight air sealing of 2.7 ACH50.

  9. Building America Whole-House Solutions for New Homes: S & A Homes...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Case study of S&A Homes who worked with Building America research partner IBACOS to design urban infill HERS-51 homes with compact duct layout in conditioned space, foam insulated ...

  10. Building America Whole-House Solutions for Existing HomesBay...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    HomesBay Ridge Gardens - Mixed Humid Affordable Multifamily Housing Deep Energy Retrofit, ... Ridge Gardens - Mixed Humid Affordable Multifamily Housing Deep Energy Retrofit, ...

  11. Existing Whole-House Solutions Case Study: Habitat for Humanity South Sarasota County, Venice, Florida

    SciTech Connect (OSTI)

    none,

    2011-11-01

    PNNL and Calcs Plus helped the South Sarasota County Florida Habitat for Humanity retrofit a 1978 single-story home by stripping old drywall, air sealing concrete block walls, and installing rigid insulation, furring strips, and new drywall. The attic was sealed and insulated with spray foam to house a new heat pump.

  12. New Whole-House Solutions Case Study: David Weekley Homes, Houston, Texas

    SciTech Connect (OSTI)

    none,

    2012-04-01

    This builder worked with Building Science Corporation to design HERS-59 homes with advanced framed walls, airtight drywall, and rigid foam wall sheathing.

  13. New Whole-House Solutions Case Study: New Traditions, Vancouver, Washington

    SciTech Connect (OSTI)

    none,

    2012-04-01

    This builder worked with WSU Energy Extension/Building America Partnership for Improved Residential Construction to design HERS-65 homes with ducts in conditioned space, site grading and drain piping, and high-efficiency HVAC..

  14. New Whole-House Solutions Case Study: Green Coast Enterprises, New Orleans, Louisiana

    SciTech Connect (OSTI)

    none,

    2012-04-01

    This builder worked with Building Science Corporation to build moisture- and flood-resistant HERS- 65 affordable homes on pier foundations, with borate pressure-treated lumber, wind-resistant OSB sheathing, hurricane strapping, roofing membrane, and closed-cell spray foam in attic, walls, and under floor.

  15. Building America Whole-House Solutions for New Homes: Rural Developmen...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    homes (60 wo PV), with double-stud walls heavy insulation, low-load sealed-combustion gas space heaters, triple-pane windows, solar water heating, and PV. PDF icon Rural ...

  16. Improving Comfort in Hot-Humid Climates with a Whole-House, Windermere...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Projected Energy Cost Savings: 53year Other Benefits: * Improved humidity control * ... Often the air conditioner (AC) thermostat set point is lower than the desirable cooling level ...

  17. New Whole-House Solutions Case Study: Urbane Homes, Louisville, Kentucky

    SciTech Connect (OSTI)

    none,

    2013-09-01

    This builder worked with National Association of Home Builders Research Center to build HERS-57 homes with rigid foam insulated slabs and foundation walls, advanced framed walls, high-efficiency heat pumps, and ducts in conditioned space.

  18. Existing Whole-House Solutions Case Study: Build San Antonio Green, San Antonio, Texas

    SciTech Connect (OSTI)

    none,

    2013-06-01

    PNNL, FSEC, and CalcsPlus provided technical assistance to Build San Antonio Green on three deep energy retrofits. For this gut rehab they replaced the old roof with a steeper roof and replaced drywall while adding insulation, new HVAC, sealed ducts, transfer grilles, outside air run-time ventilation, new lighting and water heater.

  19. Existing Whole-House Solutions Case Study: Deep Energy Retrofit of 1910 House, Portland, Oregon

    SciTech Connect (OSTI)

    none,

    2011-12-01

    This case study lists project information, cost and energy efficiency performance data, energy efficiency measures and lessons learned for a 100-year-old home in Portland, Oregon, audited by Pacific Northwest National Laboratory for a deep energy retrofit. New HVAC and extensive insulation upgrades including rigid XPS and new siding over the old lead painted siding, and EPS on the basement walls and in cathedral ceiling helped bring HERS down to 68.

  20. Building America Whole-House Solutions for New Homes: David Weekely...

    Broader source: Energy.gov (indexed) [DOE]

    David Weekley Homes, who worked with Building America research partner Building Science Corporation to design HERS-59 homes with advanced framed walls, airtight drywall, and rigid ...

  1. Existing Whole-House Solutions Case Study: Retrofit of 1915 Home, Dayton, Washington

    SciTech Connect (OSTI)

    none,

    2011-12-01

    This case study lists project information, cost and energy efficiency performance data, energy efficiency measures and lessons learned for a 1915 home in eastern Washington audited by Pacific Northwest National Laboratory for an energy retrofit. The asbestos covered diesel boiler was left in place in the basement and a new SEER 16, HSPF 9.4 ductless heat pump with four inside heads was added to cut energy costs over $2,000/year.

  2. Approaches to 30 Percent Energy Savings at the Community Scale in the Hot-Humid Climate

    SciTech Connect (OSTI)

    Thomas-Rees, S.; Beal, D.; Martin, E.

    2013-03-01

    BA-PIRC has worked with several community-scale builders within the hot humid climate zone to improve performance of production, or community scale, housing. Tommy Williams Homes (Gainesville, FL), Lifestyle Homes (Melbourne, FL), and Habitat for Humanity (various locations, FL) have all been continuous partners of the Building America program and are the subjects of this report to document achievement of the Building America goal of 30% whole house energy savings packages adopted at the community scale. Key aspects of this research include determining how to evolve existing energy efficiency packages to produce replicable target savings, identifying what builders' technical assistance needs are for implementation and working with them to create sustainable quality assurance mechanisms, and documenting the commercial viability through neutral cost analysis and market acceptance. This report documents certain barriers builders overcame and the approaches they implemented in order to accomplish Building America (BA) Program goals that have not already been documented in previous reports.

  3. Experimental approaches for the development of gamma spectroscopy well logging system

    SciTech Connect (OSTI)

    Shin, Jehyun; Hwang, Seho; Kim, Jongman; Won, Byeongho

    2015-03-10

    This article discusses experimental approaches for the development of gamma spectroscopy well logging system. Considering the size of borehole sonde, we customize 2 x 2 inches inorganic scintillators and the system including high voltage, preamplifier, amplifier and multichannel analyzer (MCA). The calibration chart is made by test using standard radioactive sources so that the measured count rates are expressed by energy spectrum. Optimum high-voltage supplies and the measurement parameters of each detector are set up by experimental investigation. Also, the responses of scintillation detectors have been examined by analysis according to the distance between source and detector. Because gamma spectroscopy well logging needs broad spectrum, high sensitivity and resolution, the energy resolution and sensitivity as a function of gamma ray energy are investigated by analyzing the gamma ray activities of the radioactive sources.

  4. Demand forecasting for automotive sector in Malaysia by system dynamics approach

    SciTech Connect (OSTI)

    Zulkepli, Jafri Abidin, Norhaslinda Zainal; Fong, Chan Hwa

    2015-12-11

    In general, Proton as an automotive company needs to forecast future demand of the car to assist in decision making related to capacity expansion planning. One of the forecasting approaches that based on judgemental or subjective factors is normally used to forecast the demand. As a result, demand could be overstock that eventually will increase the operation cost; or the company will face understock, which resulted losing their customers. Due to automotive industry is very challenging process because of high level of complexity and uncertainty involved in the system, an accurate tool to forecast the future of automotive demand from the modelling perspective is required. Hence, the main objective of this paper is to forecast the demand of automotive Proton car industry in Malaysia using system dynamics approach. Two types of intervention namely optimistic and pessimistic experiments scenarios have been tested to determine the capacity expansion that can prevent the company from overstocking. Finding from this study highlighted that the management needs to expand their production for optimistic scenario, whilst pessimistic give results that would otherwise. Finally, this study could help Proton Edar Sdn. Bhd (PESB) to manage the long-term capacity planning in order to meet the future demand of the Proton cars.

  5. Coastal zone energy management: a multidisciplinary approach for the integration of solar electric systems with Florida's power generation system

    SciTech Connect (OSTI)

    Camejo, N.

    1983-12-01

    In order for Florida to ''accomplish effective coastal land management, it must have a comprehensive statewide approach closely relating land and water management development decisions in Florida must be made with understanding of the proposed development effects on the state's water resources''. This approach is very sensible in view of the issues raised in the introduction. Whether a power plant is sited inland or on the coast has tremendous implications for water use. Offshore siting of power plants is an alternative which should be carefully evaluated using CZEM. Of particular importance is the existence of renewable energy sources, such as OTEC, Wind and Ocean current, in the offshore areas of Florida. Many Solar Electric options could be sited in the coastal and offshore areas. The main technological problem associated with offshore power plants is the transmission of the electricity to shore. The solution to this problem may be using Hydrogen as an intermediary energy carrier. The use of Solar Electric Systems would be consistent with the policy to diversify the generation mix. If Florida is called upon to develop its offshore energy resources in the national interest, the use of CZEM would allow decision makers to make more environmentally sensitive decisions. This would allow the balancing of energy production and environmental quality.

  6. A MultiAir®/MultiFuel Approach to Enhancing Engine System Efficiency

    SciTech Connect (OSTI)

    Reese, Ronald

    2015-05-20

    FCA US LLC (formally known as Chrysler Group LLC, and hereinafter “Chrysler”) was awarded an American Recovery and Reinvestment Act (ARRA) funded project by the Department of Energy (DOE) titled “A MultiAir®/MultiFuel Approach to Enhancing Engine System Efficiency” (hereinafter “project”). This award was issued after Chrysler submitted a proposal for Funding Opportunity Announcement DE-FOA- 0000079, “Systems Level Technology Development, Integration, and Demonstration for Efficient Class 8 Trucks (SuperTruck) and Advanced Technology Powertrains for Light-Duty Vehicles (ATP-LD).” Chrysler started work on this project on June 01, 2010 and completed testing activities on August 30, 2014. Overall objectives of this project were; Demonstrate a 25% improvement in combined Federal Test Procedure (FTP) City and Highway fuel economy over a 2009 Chrysler minivan; Accelerate the development of highly efficient engine and powertrain systems for light-duty vehicles, while meeting future emissions standards; and Create and retain jobs in accordance with the American Recovery and Reinvestment Act of 2009

  7. A metallurgical approach toward alloying in rare earth permanen magnet systems

    SciTech Connect (OSTI)

    Branagan, D. J.

    1995-02-23

    The approach was developed to allow microstructural enhancement and control during solidification and processing. Compound additions of Group IVA, VA, or VIA transition metals (TM) and carbon were added to Nd{sub 2}Fe{sub 14}B (2-14-1). Transition metal carbides formed in IVA (TiC, ZrC, HfC) and Group VA (VC, NbC, TaC) systems, but not in the VIA system. The alloying ability of each TM carbide was graded using phase stability, liquid and equilibrium solid solubility, and high temperature carbide stability. Ti with C additions was chosen as the best system. The practically zero equilibrium solid solubility means that the Ti and C additions will ultimately form TiC after heat treatment which allows the development of a composite microstructure consisting of the 2-14-1 phase and TiC. Thus, the excellent intrinsic magnetic properties of the 2-14-1 phase remain unaltered and the extrinsic properties relating to the microstructure are enhanced due to the TiC stabilized microstructure which is much more resistant to grain growth. When Ti + C are dissolved in the liquid melt or solid phases, such as the glass or 2-14-1 phase, the intrinsic properties are changed; favorable changes include increased glass forming ability, reduced optimum cooling rate, increased optimum energy product, and enhanced nucleation kinetics of crystallization.

  8. Integrated systems approach to pollution prevention: A three-tier substitution strategy

    SciTech Connect (OSTI)

    Ahmed, I.; Cunniff, E.; Patch, J.

    1995-12-01

    Current pollution prevention initiatives are reactive, not proactive. Most federal and state regulations and industry participation in pollution prevention projects focus on post-production cleanup. However, an integrated systems approach to design pollution prevention strategies based on substitution of entire classes of chemicals with bio-based alternatives would significantly enhance the impact of pollution prevention efforts. Industry`s current attempts at pollution prevention efforts primarily rely on recycling, modifying processes to reduce the use of certain chemicals, or substituting a petrochemical not listed on the Toxic Release Inventory (TRI) for one currently listed. Such strategies may not constitute a long term solution to the pollution problem. A more durable and comprehensive strategy is to substitute renewable feedstock derived biochemicals for petrochemicals. The generation of pollution as driven by the consumer end-products industry occurs in three distinct levels; raw materials production (crude oil refining), commodity and intermediate chemicals production, a raw chemicals consumption. This paper suggests a three-tier substitution strategy based on the three levels of materials used in the chemical process industry with a goal of minimizing the pollution impact via substitutions. The substitution potential of each of the three tiers is determined based on the optimum impact criteria applicable to a given produce line or a process. The best existing pollution prevention initiatives should be incorporated in an integrated pollution management system. This system considers and includes long-term solutions to pollution problems faced both by the regulators and the chemical process industry. The role of existing production capacities that continue to produce toxic chemicals as a byproduct and their potential phase-out via biochemical substitution is also discussed.

  9. Collaborative Proposal: Transforming How Climate System Models are Used: A Global, Multi-Resolution Approach

    SciTech Connect (OSTI)

    Estep, Donald

    2013-04-15

    Despite the great interest in regional modeling for both weather and climate applications, regional modeling is not yet at the stage that it can be used routinely and effectively for climate modeling of the ocean. The overarching goal of this project is to transform how climate models are used by developing and implementing a robust, efficient, and accurate global approach to regional ocean modeling. To achieve this goal, we will use theoretical and computational means to resolve several basic modeling and algorithmic issues. The first task is to develop techniques for transitioning between parameterized and high-fidelity regional ocean models as the discretization grid transitions from coarse to fine regions. The second task is to develop estimates for the error in scientifically relevant quantities of interest that provide a systematic way to automatically determine where refinement is needed in order to obtain accurate simulations of dynamic and tracer transport in regional ocean models. The third task is to develop efficient, accurate, and robust time-stepping schemes for variable spatial resolution discretizations used in regional ocean models of dynamics and tracer transport. The fourth task is to develop frequency-dependent eddy viscosity finite element and discontinuous Galerkin methods and study their performance and effectiveness for simulation of dynamics and tracer transport in regional ocean models. These four projects share common difficulties and will be approach using a common computational and mathematical toolbox. This is a multidisciplinary project involving faculty and postdocs from Colorado State University, Florida State University, and Penn State University along with scientists from Los Alamos National Laboratory. The completion of the tasks listed within the discussion of the four sub-projects will go a long way towards meeting our goal of developing superior regional ocean models that will transform how climate system models are used.

  10. GEOGRAPHIC INFORMATION SYSTEM APPROACH FOR PLAY PORTFOLIOS TO IMPROVE OIL PRODUCTION IN THE ILLINOIS BASIN

    SciTech Connect (OSTI)

    Beverly Seyler; John Grube

    2004-12-10

    Oil and gas have been commercially produced in Illinois for over 100 years. Existing commercial production is from more than fifty-two named pay horizons in Paleozoic rocks ranging in age from Middle Ordovician to Pennsylvanian. Over 3.2 billion barrels of oil have been produced. Recent calculations indicate that remaining mobile resources in the Illinois Basin may be on the order of several billion barrels. Thus, large quantities of oil, potentially recoverable using current technology, remain in Illinois oil fields despite a century of development. Many opportunities for increased production may have been missed due to complex development histories, multiple stacked pays, and commingled production which makes thorough exploitation of pays and the application of secondary or improved/enhanced recovery strategies difficult. Access to data, and the techniques required to evaluate and manage large amounts of diverse data are major barriers to increased production of critical reserves in the Illinois Basin. These constraints are being alleviated by the development of a database access system using a Geographic Information System (GIS) approach for evaluation and identification of underdeveloped pays. The Illinois State Geological Survey has developed a methodology that is being used by industry to identify underdeveloped areas (UDAs) in and around petroleum reservoirs in Illinois using a GIS approach. This project utilizes a statewide oil and gas Oracle{reg_sign} database to develop a series of Oil and Gas Base Maps with well location symbols that are color-coded by producing horizon. Producing horizons are displayed as layers and can be selected as separate or combined layers that can be turned on and off. Map views can be customized to serve individual needs and page size maps can be printed. A core analysis database with over 168,000 entries has been compiled and assimilated into the ISGS Enterprise Oracle database. Maps of wells with core data have been generated

  11. THE MATHEMATICAL ANALYSIS OF A NOVEL APPROACH TO MAXIMIZE WASTE RECOVERY IN A LIFE SUPPORT SYSTEM

    SciTech Connect (OSTI)

    Michael G. McKellar; Rick A. Wood; Carl M. Stoots; Lila Mulloth; Bernadette Luna

    2011-11-01

    NASA has been evaluating closed-loop atmosphere revitalization architectures that include carbon dioxide (CO2) reduction technologies. The CO2 and steam (H2O) co-electrolysis process is one of the reduction options that NASA has investigated. Utilizing recent advances in the fuel cell technology sector, the Idaho National Laboratory, INL, has developed a CO2 and H2O co-electrolysis process to produce oxygen and syngas (carbon monoxide (CO) and hydrogen (H2) mixture) for terrestrial (energy production) application. The technology is a combined process that involves steam electrolysis, CO2 electrolysis, and the reverse water gas shift (RWGS) reaction. Two process models were developed to evaluate novel approaches for energy storage and resource recovery in a life support system. In the first model, products from the INL co-electrolysis process are combined to produce methanol fuel. In the second co-electrolysis, products are separated with a pressure swing adsorption (PSA) process. In both models the fuels are burned with added oxygen to produce H2O and CO2, the original reactants. For both processes, the overall power increases as the syngas ratio, H2/CO, increases because more water is needed to produce more hydrogen at a set CO2 incoming flow rate. The power for the methanol cases is less than pressure swing adsorption, PSA, because heat is available from the methanol reactor to preheat the water and carbon dioxide entering the co-electrolysis process.

  12. Mathematical Analysis of a Novel Approach to Maximize Waste Recovery in a Life Support System

    SciTech Connect (OSTI)

    Michael G. McKellar; Rick A. Wood; Carl M. Stoots; Lila Mulloth; Bernadette Luna

    2011-02-01

    NASA has been evaluating closed-loop atmosphere revitalization architectures carbon dioxide, CO2, reduction technologies. The CO2 and steam, H2O, co-electrolysis process is another option that NASA has investigated. Utilizing recent advances in the fuel cell technology sector, the Idaho National Laboratory, INL, has developed a CO2 and H2O co-electrolysis process to produce oxygen and syngas (carbon monoxide, CO and hydrogen, H2 mixture) for terrestrial (energy production) application. The technology is a combined process that involves steam electrolysis, CO2 electrolysis, and the reverse water gas shift (RWGS) reaction. Two process models were developed to evaluate novel approaches for waster recovery in a life support system. The first is a model INL co-electrolysis process combined with a methanol production process. The second is the INL co-electrolysis process combined with a pressure swing adsorption (PSA) process. For both processes, the overall power increases as the syngas ratio, H2/CO, increases because more water is needed to produce more hydrogen at a set CO2 incoming flow rate. The power for the methanol cases is less than the PSA because heat is available from the methanol reactor to preheat the water and carbon dioxide entering the co-electrolysis process.

  13. Building America Technology Solutions for New and Existing Homes: Improving

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Comfort in Hot-Humid Climates with a Whole-House Dehumidifier, Windermere, Florida (Fact Sheet) | Department of Energy Improving Comfort in Hot-Humid Climates with a Whole-House Dehumidifier, Windermere, Florida (Fact Sheet) Building America Technology Solutions for New and Existing Homes: Improving Comfort in Hot-Humid Climates with a Whole-House Dehumidifier, Windermere, Florida (Fact Sheet) In order to quantify the performance of a combined whole-house dehumidifier (WHD) AC system,

  14. Experimental Systems-Biology Approaches for Clostridia-Based Bioenergy Production

    SciTech Connect (OSTI)

    Papoutsakis, Elefterios

    2015-04-30

    This is the final project report for project "Experimental Systems-Biology Approaches for Clostridia-Based Bioenergy Production" for the funding period of 9/1/12 to 2/28/2015 (three years with a 6-month no-cost extension) OVERVIEW AND PROJECT GOALS The bottleneck of achieving higher rates and titers of toxic metabolites (such as solvents and carboxylic acids that can used as biofuels or biofuel precursors) can be overcome by engineering the stress response system. Thus, understanding and modeling the response of cells to toxic metabolites is a problem of great fundamental and practical significance. In this project, our goal is to dissect at the molecular systems level and build models (conceptual and quantitative) for the stress response of C. acetobutylicum (Cac) to its two toxic metabolites: butanol (BuOH) and butyrate (BA). Transcriptional (RNAseq and microarray based), proteomic and fluxomic data and their analysis are key requirements for this goal. Transcriptional data from mid-exponential cultures of Cac under 4 different levels of BuOH and BA stress was obtained using both microarrays (Papoutsakis group) and deep sequencing (RNAseq; Meyers and Papoutsakis groups). These two sets of data do not only serve to validate each other, but are also used for identification of stress-induced changes in transcript levels, small regulatory RNAs, & in transcriptional start sites. Quantitative proteomic data (Lee group), collected using the iTRAQ technology, are essential for understanding of protein levels and turnover under stress and the various protein-protein interactions that orchestrate the stress response. Metabolic flux changes (Antoniewicz group) of core pathways, which provide important information on the re-allocation of energy and carbon resources under metabolite stress, were examined using 13C-labelled chemicals. Omics data are integrated at different levels and scales. At the metabolic-pathway level, omics data are integrated into a 2nd generation genome

  15. A decision support system prototype including human factors based on the TOGA meta-theory approach

    SciTech Connect (OSTI)

    Cappelli, M.; Memmi, F.; Gadomski, A. M.; Sepielli, M.

    2012-07-01

    The human contribution to the risk of operation of complex technological systems is often not negligible and sometimes tends to become significant, as shown by many reports on incidents and accidents occurred in the past inside Nuclear Power Plants (NPPs). An error of a human operator of a NPP can derive by both omission and commission. For instance, complex commission errors can also lead to significant catastrophic technological accidents, as for the case of the Three Mile Island accident. Typically, the problem is analyzed by focusing on the single event chain that has provoked the incident or accident. What is needed is a general framework able to include as many parameters as possible, i.e. both technological and human factors. Such a general model could allow to envisage an omission or commission error before it can happen or, alternatively, suggest preferred actions to do in order to take countermeasures to neutralize the effect of the error before it becomes critical. In this paper, a preliminary Decision Support System (DSS) based on the so-called (-) TOGA meta-theory approach is presented. The application of such a theory to the management of nuclear power plants has been presented in the previous ICAPP 2011. Here, a human factor simulator prototype is proposed in order to include the effect of human errors in the decision path. The DSS has been developed using a TRIGA research reactor as reference plant, and implemented using the LabVIEW programming environment and the Finite State Machine (FSM) model The proposed DSS shows how to apply the Universal Reasoning Paradigm (URP) and the Universal Management Paradigm (UMP) to a real plant context. The DSS receives inputs from instrumentation data and gives as output a suggested decision. It is obtained as the result of an internal elaborating process based on a performance function. The latter, describes the degree of satisfaction and efficiency, which are dependent on the level of responsibility related to

  16. Theoretical approach for optical response in electrochemical systems: Application to electrode potential dependence of surface-enhanced Raman scattering

    SciTech Connect (OSTI)

    Iida, Kenji; Noda, Masashi; Nobusada, Katsuyuki

    2014-09-28

    We propose a theoretical approach for optical response in electrochemical systems. The fundamental equation to be solved is based on a time-dependent density functional theory in real-time and real-space in combination with its finite temperature formula treating an electrode potential. Solvation effects are evaluated by a dielectric continuum theory. The approach allows us to treat optical response in electrochemical systems at the atomistic level of theory. We have applied the method to surface-enhanced Raman scattering (SERS) of 4-mercaptopyridine on an Ag electrode surface. It is shown that the SERS intensity has a peak as a function of the electrode potential. Furthermore, the real-space computational approach facilitates visualization of variation of the SERS intensity depending on an electrode potential.

  17. A Systems Approach to Bio-Oil Stabilization - Final Technical Report

    SciTech Connect (OSTI)

    Brown, Robert C; Meyer, Terrence; Fox, Rodney; Submramaniam, Shankar; Shanks, Brent; Smith, Ryan G

    2011-12-23

    The objective of this project is to develop practical, cost effective methods for stabilizing biomass-derived fast pyrolysis oil for at least six months of storage under ambient conditions. The U.S. Department of Energy has targeted three strategies for stabilizing bio-oils: (1) reducing the oxygen content of the organic compounds comprising pyrolysis oil; (2) removal of carboxylic acid groups such that the total acid number (TAN) of the pyrolysis oil is dramatically reduced; and (3) reducing the charcoal content, which contains alkali metals known to catalyze reactions that increase the viscosity of bio-oil. Alkali and alkaline earth metals (AAEM), are known to catalyze decomposition reactions of biomass carbohydrates to produce light oxygenates that destabilize the resulting bio-oil. Methods envisioned to prevent the AAEM from reaction with the biomass carbohydrates include washing the AAEM out of the biomass with water or dilute acid or infusing an acid catalyst to passivate the AAEM. Infusion of acids into the feedstock to convert all of the AAEM to salts which are stable at pyrolysis temperatures proved to be a much more economically feasible process. Our results from pyrolyzing acid infused biomass showed increases in the yield of anhydrosugars by greater than 300% while greatly reducing the yield of light oxygenates that are known to destabilize bio-oil. Particulate matter can interfere with combustion or catalytic processing of either syngas or bio-oil. It also is thought to catalyze the polymerization of bio-oil, which increases the viscosity of bio-oil over time. High temperature bag houses, ceramic candle filters, and moving bed granular filters have been variously suggested for syngas cleaning at elevated temperatures. High temperature filtration of bio-oil vapors has also been suggested by the National Renewable Energy Laboratory although there remain technical challenges to this approach. The fast pyrolysis of biomass yields three main organic

  18. Thermodynamic approach to the stability of multi-phase systems. Application to the Y2O3–Fe system

    SciTech Connect (OSTI)

    Samolyuk, German D.; Osetskiy, Yury N.

    2015-07-07

    Oxide-metal systems (OMSs) are important in many practical applications, and therefore, are under extensive studies using a wide range of techniques. The most accurate theoretical approaches are based on density functional theory (DFT), which are limited to ~102 atoms. Multi-scale approaches, e.g., DFT+Monte Carlo, are often used to model OMSs at the atomic level. These approaches can describe qualitatively the kinetics of some processes but not the overall stability of OMSs. In this paper, we propose a thermodynamic approach to study equilibrium in multiphase systems, which can be sequentially enhanced by considering different defects and microstructures. We estimate the thermodynamic equilibrium by minimization the free energy of the whole multiphase system using a limited set of defects and microstructural objects for which the properties are calculated by DFT. As an example, we consider Y2O3+bcc Fe with vacancies in both the Y2O3 and bcc Fe phases, Y substitutions and O interstitials in Fe, Fe impurities and antisite defects in Y2O3. The output of these calculations is the thermal equilibrium concentration of all the defects for a particular temperature and composition. The results obtained confirmed the high temperature stability of yttria in iron. As a result, model development towards more accurate calculations is discussed.

  19. Thermodynamic approach to the stability of multi-phase systems. Application to the Y2O3–Fe system

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Samolyuk, German D.; Osetskiy, Yury N.

    2015-07-07

    Oxide-metal systems (OMSs) are important in many practical applications, and therefore, are under extensive studies using a wide range of techniques. The most accurate theoretical approaches are based on density functional theory (DFT), which are limited to ~102 atoms. Multi-scale approaches, e.g., DFT+Monte Carlo, are often used to model OMSs at the atomic level. These approaches can describe qualitatively the kinetics of some processes but not the overall stability of OMSs. In this paper, we propose a thermodynamic approach to study equilibrium in multiphase systems, which can be sequentially enhanced by considering different defects and microstructures. We estimate the thermodynamicmore » equilibrium by minimization the free energy of the whole multiphase system using a limited set of defects and microstructural objects for which the properties are calculated by DFT. As an example, we consider Y2O3+bcc Fe with vacancies in both the Y2O3 and bcc Fe phases, Y substitutions and O interstitials in Fe, Fe impurities and antisite defects in Y2O3. The output of these calculations is the thermal equilibrium concentration of all the defects for a particular temperature and composition. The results obtained confirmed the high temperature stability of yttria in iron. As a result, model development towards more accurate calculations is discussed.« less

  20. A comprehensive approach using fuzzy logic to select fracture fluid systems

    SciTech Connect (OSTI)

    Xiong, H.; Davidson, B.; Holditch, S.A.; Saunders, B.

    1997-01-01

    This system, which consists of several fuzzy logic evaluators, can also be applied to similar problems associated with drilling, completing and working over wells. With formation information, the fuzzy logic system first determines base fluid, viscosifying method and energization method before choosing the 3--5 best combinations of possible fluids. The system then determines polymer type and loading, crosslinker, gas type if necessary, and other additives for the fluid systems. Also using fuzzy logic, this system checks the compatibility of the fluid and additives with formation fluids and composition.

  1. A system dynamic modeling approach for evaluating municipal solid waste generation, landfill capacity and related cost management issues

    SciTech Connect (OSTI)

    Kollikkathara, Naushad; Feng Huan; Yu Danlin

    2010-11-15

    As planning for sustainable municipal solid waste management has to address several inter-connected issues such as landfill capacity, environmental impacts and financial expenditure, it becomes increasingly necessary to understand the dynamic nature of their interactions. A system dynamics approach designed here attempts to address some of these issues by fitting a model framework for Newark urban region in the US, and running a forecast simulation. The dynamic system developed in this study incorporates the complexity of the waste generation and management process to some extent which is achieved through a combination of simpler sub-processes that are linked together to form a whole. The impact of decision options on the generation of waste in the city, on the remaining landfill capacity of the state, and on the economic cost or benefit actualized by different waste processing options are explored through this approach, providing valuable insights into the urban waste-management process.

  2. Sensitivity Analysis of Wind Plant Performance to Key Turbine Design Parameters: A Systems Engineering Approach; Preprint

    SciTech Connect (OSTI)

    Dykes, K.; Ning, A.; King, R.; Graf, P.; Scott, G.; Veers, P.

    2014-02-01

    This paper introduces the development of a new software framework for research, design, and development of wind energy systems which is meant to 1) represent a full wind plant including all physical and nonphysical assets and associated costs up to the point of grid interconnection, 2) allow use of interchangeable models of varying fidelity for different aspects of the system, and 3) support system level multidisciplinary analyses and optimizations. This paper describes the design of the overall software capability and applies it to a global sensitivity analysis of wind turbine and plant performance and cost. The analysis was performed using three different model configurations involving different levels of fidelity, which illustrate how increasing fidelity can preserve important system interactions that build up to overall system performance and cost. Analyses were performed for a reference wind plant based on the National Renewable Energy Laboratory's 5-MW reference turbine at a mid-Atlantic offshore location within the United States.

  3. Evaluating Domestic Hot Water Distribution System Options with Validated Analysis Models

    SciTech Connect (OSTI)

    Weitzel, E.; Hoeschele, E.

    2014-09-01

    A developing body of work is forming that collects data on domestic hot water consumption, water use behaviors, and energy efficiency of various distribution systems. Transient System Simulation Tool (TRNSYS) is a full distribution system developed that has been validated using field monitoring data and then exercised in a number of climates to understand climate impact on performance. In this study, the Building America team built upon previous analysis modeling work to evaluate differing distribution systems and the sensitivities of water heating energy and water use efficiency to variations of climate, load, distribution type, insulation and compact plumbing practices. Overall, 124 different TRNSYS models were simulated. The results of this work are useful in informing future development of water heating best practices guides as well as more accurate (and simulation time efficient) distribution models for annual whole house simulation programs.

  4. An Engine System Approach to Exhaust Waste Heat Recovery | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Summarizes progress in design, analysis, and testing of individual component building blocks of waste heat recovery system for a 10% improvement in heavy-duty diesel engine. deer08_kruiswyk.pdf (1.52

  5. Advanced Methods Approach to Hybrid Powertrain Systems Optimization of a Transit Bus Application

    Broader source: Energy.gov [DOE]

    Design refinements of the GTB-40 mass-transit bus include new optimization processes, subsystem, and powertrain system requirements along with traction motor, battery, and APU development and integration

  6. Home Cooling Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Fans In many climates, you can use a whole-house fan to meet all or most of your home cooling needs. Evaporative Cooling For homes in dry climates, evaporative cooling or...

  7. CHARACTERIZATION AND MONITORING OF NATURAL ATTENUATION OF CHLORINATED SOLVENTS IN GROUNDWATER: A SYSTEMS APPROACH

    SciTech Connect (OSTI)

    Looney, B; Michael Heitkamp, M; Gary Wein , G; Christopher Bagwell, C; Karen Vangelas, K; Karen-M Adams, K; Tyler Gilmore; Norman Cutshall; David Major; Mike Truex; Todd Wiedemeier; Francis H. Chapelle; Tom Early; Jody Waugh; David Peterson; Mark Ankeny; Claire H. Sink

    2006-08-10

    The objective of this document is to examine the use of a phased approach to characterizing and monitoring (C&M) natural attenuation processes and enhanced attenuation processes and to identify promising tools and techniques by which to accomplish the C&M. We will investigate developing techniques, such as molecular-based assessment tools, and existing tools that traditionally have not been used for monitoring the performance of environmental remediation technologies. Case studies will be used to provide examples of how non-traditional methods are being employed as characterization and monitoring tools to support MNA and EA. The document is not focused on a specific group of readers but rather is broadly directed with the intent that readers may gain information useful to their purposes. Thus, regulators may see some future characterization and monitoring techniques; end users may find novel ways to make MNA or EA more effective or efficient at their site; researchers may identify new areas for development or new and better combinations of existing methods. One consequence of this broad approach is that some readers may find certain sections either too rudimentary or too advanced for their needs. Hopefully, all will be able to use at least some of the document.

  8. Psychosocial and Cultural Modeling in Human Computation Systems: A Gamification Approach

    SciTech Connect (OSTI)

    Sanfilippo, Antonio P.; Riensche, Roderick M.; Haack, Jereme N.; Butner, R. Scott

    2013-11-20

    “Gamification”, the application of gameplay to real-world problems, enables the development of human computation systems that support decision-making through the integration of social and machine intelligence. One of gamification’s major benefits includes the creation of a problem solving environment where the influence of cognitive and cultural biases on human judgment can be curtailed through collaborative and competitive reasoning. By reducing biases on human judgment, gamification allows human computation systems to exploit human creativity relatively unhindered by human error. Operationally, gamification uses simulation to harvest human behavioral data that provide valuable insights for the solution of real-world problems.

  9. Optimization of solar assisted heat pump systems via a simple analytic approach

    SciTech Connect (OSTI)

    Andrews, J W

    1980-01-01

    An analytic method for calculating the optimum operating temperature of the collector/storage subsystem in a solar assisted heat pump is presented. A tradeoff exists between rising heat pump coefficient of performance and falling collector efficiency as this temperature is increased, resulting in an optimum temperature whose value increases with increasing efficiency of the auxiliary energy source. Electric resistance is shown to be a poor backup to such systems. A number of options for thermally coupling the system to the ground are analyzed and compared.

  10. Statistical dynamics of classical systems: A self-consistent field approach

    SciTech Connect (OSTI)

    Grzetic, Douglas J. Wickham, Robert A.; Shi, An-Chang

    2014-06-28

    We develop a self-consistent field theory for particle dynamics by extremizing the functional integral representation of a microscopic Langevin equation with respect to the collective fields. Although our approach is general, here we formulate it in the context of polymer dynamics to highlight satisfying formal analogies with equilibrium self-consistent field theory. An exact treatment of the dynamics of a single chain in a mean force field emerges naturally via a functional Smoluchowski equation, while the time-dependent monomer density and mean force field are determined self-consistently. As a simple initial demonstration of the theory, leaving an application to polymer dynamics for future work, we examine the dynamics of trapped interacting Brownian particles. For binary particle mixtures, we observe the kinetics of phase separation.

  11. A simple grand canonical approach to compute the vapor pressure of bulk and finite size systems

    SciTech Connect (OSTI)

    Factorovich, Matas H.; Scherlis, Damin A.

    2014-02-14

    In this article we introduce a simple grand canonical screening (GCS) approach to accurately compute vapor pressures from molecular dynamics or Monte Carlo simulations. This procedure entails a screening of chemical potentials using a conventional grand canonical scheme, and therefore it is straightforward to implement for any kind of interface. The scheme is validated against data obtained from Gibbs ensemble simulations for water and argon. Then, it is applied to obtain the vapor pressure of the coarse-grained mW water model, and it is shown that the computed value is in excellent accord with the one formally deduced using statistical thermodynamics arguments. Finally, this methodology is used to calculate the vapor pressure of a water nanodroplet of 94 molecules. Interestingly, the result is in perfect agreement with the one predicted by the Kelvin equation for a homogeneous droplet of that size.

  12. Quantitative Risk reduction estimation Tool For Control Systems, Suggested Approach and Research Needs

    SciTech Connect (OSTI)

    Miles McQueen; Wayne Boyer; Mark Flynn; Sam Alessi

    2006-03-01

    For the past year we have applied a variety of risk assessment technologies to evaluate the risk to critical infrastructure from cyber attacks on control systems. More recently, we identified the need for a stand alone control system risk reduction estimation tool to provide owners and operators of control systems with a more useable, reliable, and credible method for managing the risks from cyber attack. Risk is defined as the probability of a successful attack times the value of the resulting loss, typically measured in lives and dollars. Qualitative and ad hoc techniques for measuring risk do not provide sufficient support for cost benefit analyses associated with cyber security mitigation actions. To address the need for better quantitative risk reduction models we surveyed previous quantitative risk assessment research; evaluated currently available tools; developed new quantitative techniques [17] [18]; implemented a prototype analysis tool to demonstrate how such a tool might be used; used the prototype to test a variety of underlying risk calculational engines (e.g. attack tree, attack graph); and identified technical and research needs. We concluded that significant gaps still exist and difficult research problems remain for quantitatively assessing the risk to control system components and networks, but that a useable quantitative risk reduction estimation tool is not beyond reach.

  13. Mathematical approaches for complexity/predictivity trade-offs in complex system models : LDRD final report.

    SciTech Connect (OSTI)

    Goldsby, Michael E.; Mayo, Jackson R.; Bhattacharyya, Arnab; Armstrong, Robert C.; Vanderveen, Keith

    2008-09-01

    The goal of this research was to examine foundational methods, both computational and theoretical, that can improve the veracity of entity-based complex system models and increase confidence in their predictions for emergent behavior. The strategy was to seek insight and guidance from simplified yet realistic models, such as cellular automata and Boolean networks, whose properties can be generalized to production entity-based simulations. We have explored the usefulness of renormalization-group methods for finding reduced models of such idealized complex systems. We have prototyped representative models that are both tractable and relevant to Sandia mission applications, and quantified the effect of computational renormalization on the predictive accuracy of these models, finding good predictivity from renormalized versions of cellular automata and Boolean networks. Furthermore, we have theoretically analyzed the robustness properties of certain Boolean networks, relevant for characterizing organic behavior, and obtained precise mathematical constraints on systems that are robust to failures. In combination, our results provide important guidance for more rigorous construction of entity-based models, which currently are often devised in an ad-hoc manner. Our results can also help in designing complex systems with the goal of predictable behavior, e.g., for cybersecurity.

  14. The chemical effects of the Martian environment on power system component materials: A theoretical approach

    SciTech Connect (OSTI)

    Perez-Davis, M.E.; Gaier, J.R.

    1994-09-01

    In the foreseeable future, an expedition may be undertaken to explore the planet Mars. Some of the power source options being considered for such a mission are photovoltaics, regenerative fuel cells and nuclear reactors. In addition to electrical power requirements, environmental conditions en route to Mars, in the planetary orbit and on the Martian surface must be simulated and studied in order to anticipate and solve potential problems. Space power systems components such as photovoltaic arrays, radiators, and solar concentrators may be vulnerable to degradation in the Martian environment. Natural characteristics of Mars which may pose a threat to surface power systems include high velocity winds, dust, ultraviolet radiation, large daily variations in temperature, reaction to components of the soil, atmosphere and atmospheric condensates as well as synergistic combinations. Most of the current knowledge of the characteristics of the Martian atmosphere and soil composition was obtained from the Viking 1 and 2 missions in 1976. This paper presents a theoretical study used to assess the effects of the Martian atmospheric conditions on the power systems components. A computer program written at NASA Lewis Research Center in 1961 to 1962 for combustion research that uses a free-energy minimization technique was used to calculate chemical equilibrium for assigned thermodynamic states of temperature and pressure. The power system component materials selected for this study include: Silicon dioxide, silicon, carbon, copper, and titanium. Combinations of environments and materials considered in this study include: (1) Mars atmosphere with power surface material, (2) Mars atmosphere and dust component with power surface material, (3) Mars atmosphere and hydrogen peroxide or superoxide with power system material.

  15. The low temperature hydrothermal system of Campiglia, Tuscany (Italy); A geochemical approach

    SciTech Connect (OSTI)

    Celati, R.; Grassi, S.; D'Amore, F.; Marcolini, L. )

    1991-01-01

    This paper reports on the Campiglia hydrothermal system which is a low temperature hydrothermal system located in southwestern Tuscany, a region of Italy characterized by intense geothermal activity and by the presence of high temperature exploited geothermal reservoirs. Six water-points, with temperatures ranging between 20 and 47{degrees} C and different chemical and isotopic compositions, are found close to the margins of outcrops of the main regional aquifer formation. Systematic hydrogeological, geochemical and isotopic observations and temperature measurements were carried out on the different springs and wells for a period of three years (1984-1986). Constant water characteristics with time were observed in four water-points; two wells had variable trends depending on mixing processes. A groundwater circulation model characterized by flowpaths of different length and depth is suggested by the variety of chemical and isotopic characteristics and is consistent with geothermometry, which indicates temperatures up to 25{degrees} C higher than those measured at the spring emergencies. An important water supply to the system comes from local recharge, although regional circulation may also be present, particularly in the eastern part of the investigated area.

  16. RegPredict: an integrated system for regulon inference in prokaryotes by comparative genomics approach

    SciTech Connect (OSTI)

    Novichkov, Pavel S.; Rodionov, Dmitry A.; Stavrovskaya, Elena D.; Novichkova, Elena S.; Kazakov, Alexey E.; Gelfand, Mikhail S.; Arkin, Adam P.; Mironov, Andrey A.; Dubchak, Inna

    2010-05-26

    RegPredict web server is designed to provide comparative genomics tools for reconstruction and analysis of microbial regulons using comparative genomics approach. The server allows the user to rapidly generate reference sets of regulons and regulatory motif profiles in a group of prokaryotic genomes. The new concept of a cluster of co-regulated orthologous operons allows the user to distribute the analysis of large regulons and to perform the comparative analysis of multiple clusters independently. Two major workflows currently implemented in RegPredict are: (i) regulon reconstruction for a known regulatory motif and (ii) ab initio inference of a novel regulon using several scenarios for the generation of starting gene sets. RegPredict provides a comprehensive collection of manually curated positional weight matrices of regulatory motifs. It is based on genomic sequences, ortholog and operon predictions from the MicrobesOnline. An interactive web interface of RegPredict integrates and presents diverse genomic and functional information about the candidate regulon members from several web resources. RegPredict is freely accessible at http://regpredict.lbl.gov.

  17. Critical Infrastructure Modeling: An Approach to Characterizing Interdependencies of Complex Networks & Control Systems

    SciTech Connect (OSTI)

    Stuart Walsh; Shane Cherry; Lyle Roybal

    2009-05-01

    Critical infrastructure control systems face many challenges entering the 21st century, including natural disasters, cyber attacks, and terrorist attacks. Revolutionary change is required to solve many existing issues, including gaining greater situational awareness and resiliency through embedding modeling and advanced control algorithms in smart sensors and control devices instead of in a central controller. To support design, testing, and component analysis, a flexible simulation and modeling capability is needed. Researchers at Idaho National Laboratory are developing and evaluating such a capability through their CIPRsim modeling and simulation framework.

  18. A Geographic Information System approach to modeling nutrient and sediment transport

    SciTech Connect (OSTI)

    Levine, D.A.; Hunsaker, C.T.; Beauchamp, J.J.; Timmins, S.P.

    1993-02-01

    The objective of this study was to develop a water quality model to quantify nonpoint-source (NPS) pollution that uses a geographic information system (GIS) to link statistical modeling of nutrient and sediment delivery with the spatial arrangement of the parameters that drive the model. The model predicts annual nutrient and sediment loading and was developed, calibrated, and tested on 12 watersheds within the Lake Ray Roberts drainage basin in north Texas. Three physiographic regions are represented by these watersheds, and model success, as measured by the accuracy of load estimates, was compared within and across these regions.

  19. UNIQUE APPROACH TO COMPLYING WITH VERY LOW NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM PERMIT LIMITS FOR COPPER

    SciTech Connect (OSTI)

    Payne, B.; Halverson, N.; Looney, B.; Millings, M.; Nichols, R.; Noonkester, J.

    2011-03-15

    The NPDES permit issued to the Savannah River Site (SRS) in 2003 contained copper limits as low as six micrograms per liter. It also contained compliance schedules that provided SRS with anywhere from three to five years to select and implement projects that would enable compliance at several outfalls. Some outfall problems were much more difficult to correct than others. SRS personnel implemented several innovative projects in order to meet compliance schedule deadlines as inexpensively as possible. One innovation, constructing a humic acid feed system to increase effluent dissolved organic carbon (DOC) content, has proven to be very successful.

  20. Cost Effective, High Efficiency Integrated Systems Approach to Auxilliary Electric Motors

    SciTech Connect (OSTI)

    Roy Kessinger Jr.; Keith Seymour; Kanchan Angal; Jason Wolf; Steve Brewer; Leonard Schrank

    2003-09-26

    The CARAT program, carried out by Kinetic Art & Technology Corporation (KAT), has been one of the most commercially successful KAT R&D programs to date. Based on previous development of its technology, KAT designed, constructed and tested a highly efficient motor and controller system under this CARAT program with supplemental commercial funding. Throughout this CARAT effort, the technical objectives have been refined and refocused. Some objectives have been greatly expanded, while others have been minimized. The determining factor in all decisions to refocus the objectives was the commercial need, primarily the needs of KAT manufacturing partners. Several companies are employing the resulting CARAT motor and controller designs in prototypes for commercial products. Two of these companies have committed to providing cost share in order to facilitate the development. One of these companies is a major manufacturing company developing a revolutionary new family of products requiring the ultra-high system efficiency achievable by the KAT motor and controller technologies (known as Segmented ElectroMagnetic Array, or SEMA technology). Another company requires the high efficiency, quiet operation, and control characteristics afforded by the same basic motor and controller for an advanced air filtration product. The combined annual production requirement projected by these two companies exceeds one million units by 2005.

  1. Dynamics of micelle-nanoparticle systems undergoing shear: a coarse-grained molecular dynamics approach

    SciTech Connect (OSTI)

    Rolfe, Bryan A.; Chun, Jaehun; Joo, Yong L.

    2013-09-05

    Recent experimental work has shown that polymeric micelles can template nanoparticles via interstitial sites in shear-ordered micelle solutions. In the current study, we report simulation results based on a coarse-grained molecular dynamics (CGMD) model of a solvent/polymer/nanoparticle system. Our results demonstrate the importance of polymer concentration and the micelle corona length in 2D shear-ordering of neat block copolymer solutions. Although our results do not show strong 3D ordering during shear, we find that cessation of shear allows the system to relax into a 3D configuration of greater order than without shear. It is further shown that this post-shear relaxation is strongly dependent on the length of the micelle corona. For the first time, we demonstrate the presence and importance of a flow disturbance surrounding micelles in simple shear flow at moderate Pclet numbers. This disturbance is similar to what is observed around simulated star polymers and ellipsoids. The extent of the flow disturbance increases as expected with a longer micelle corona length. It is further suggested that without proper consideration of these dynamics, a stable nanoparticle configuration would be difficult to obtain.

  2. Building America Case Study: Whole-House Solutions for Existing Homes: Greenbelt Homes, Inc. Pilot Retrofit Program; Whole-House Solutions for Existing Homes, Energy Efficiency & Renewable Energy (EERE)

    SciTech Connect (OSTI)

    2015-06-01

    In the fall of 2010, a multiyear pilot energy efficiency retrofit project was undertaken by Greenbelt Homes, Inc, (GHI) a 1,566 home cooperative of circa 1930 and 1940 homes in Greenbelt, Maryland. GHI established this pilot project to serve as a basis for decision making for the rollout of a decade-long community-wide upgrade program that will incorporate energy efficiency improvements to the building envelope and mechanical equipment. With the community upgrade fully funded by the cooperative through their membership without outside subsidies, this project presents a unique opportunity to evaluate and prioritize the wide-range of benefits of high-performance retrofits based on member experience with and acceptance of the retrofit measures implemented during the pilot project. Addressing the complex interactions between benefits, trade-offs, construction methods, project management implications, realistic upfront costs, financing, and other considerations, serves as a case study for energy retrofit projects to include high-performance technologies based on the long-term value to the homeowner. The pilot project focused on identifying the added costs and energy savings benefits of improvements. Phase 1: baseline evaluation for a representative set of 28 homes sited in seven buildings; Phase 2: installation of the building envelope improvements and continued monitoring of the energy consumption for the heating season and energy simulations supporting recommendations for HVAC and water heating upgrades to be implemented in Phase 3.

  3. EMAPS: An Efficient Multiscale Approach to Plasma Systems with Non-MHD Scale Effects

    SciTech Connect (OSTI)

    Omelchenko, Yuri A; Karimabadi, Homa

    2014-10-14

    Using Discrete-Event Simulation (DES) as a novel paradigm for time integration of large-scale physics-driven systems, we have achieved significant breakthroughs in simulations of multi-dimensional magnetized plasmas where ion kinetic and finite Larmor radius (FLR) and Hall effects play a crucial role. For these purposes we apply a unique asynchronous simulation tool: a parallel, electromagnetic Particle-in-Cell (PIC) code, HYPERS (Hybrid Particle Event-Resolved Simulator), which treats plasma electrons as a charge neutralizing fluid and solves a self-consistent set of non-radiative Maxwell, electron fluid equations and ion particle equations on a structured computational grid. HYPERS enables adaptive local time steps for particles, fluid elements and electromagnetic fields. This ensures robustness (stability) and efficiency (speed) of highly dynamic and nonlinear simulations of compact plasma systems such spheromaks, FRCs, ion beams and edge plasmas. HYPERS is a unique asynchronous code that has been designed to serve as a test bed for developing multi-physics applications not only for laboratory plasma devices but generally across a number of plasma physics fields, including astrophysics, space physics and electronic devices. We have made significant improvements to the HYPERS core: (1) implemented a new asynchronous magnetic field integration scheme that preserves local divB=0 to within round-off errors; (2) Improved staggered-grid discretizations of electric and magnetic fields. These modifications have significantly enhanced the accuracy and robustness of 3D simulations. We have conducted first-ever end-to-end 3D simulations of merging spheromak plasmas. The preliminary results show: (1) tilt-driven relaxation of a freely expanding spheromak to an m=1 Taylor helix configuration and (2) possibility of formation of a tilt-stable field-reversed configuration via merging and magnetic reconnection of two double-sided spheromaks with opposite helicities.

  4. An approach for the development of an aerodynamic-structural interaction numerical simulation for aeropropulsion systems

    SciTech Connect (OSTI)

    Naziar, J.; Couch, R.; Davis, M.

    1996-01-01

    Traditionally, aeropropulsion structural performance and aerodynamic performance have been designed separately and later mated together via flight testing. In today`s atmosphere of declining resources, it is imperative that more productive ways of designing and verifying aeropropulsion performance and structural interaction be made available to the aerospace industry. One method of obtaining a more productive design and evaluation capability is through the use of numerical simulations. Currently, Lawrence Livermore National Laboratory has developed a generalized fluid/structural interaction code known as ALE3D. This code is capable of characterizing fluid and structural interaction for components such as the combustor, fan/stators, inlet and/or nozzles. This code solves the 3D Euler equations and has been applied to several aeropropulsion applications such as a supersonic inlet and a combustor rupture simulation. To characterize aerodynamic-structural interaction for rotating components such as the compressor, appropriate turbomachinery simulations would need to be implemented within the ALE3D structure. The Arnold Engineering Development Center is currently developing a three-dimensional compression system code known as TEACC (Turbine Engine Analysis Compressor Code). TEACC also solves the 3D Euler equations and is intended to simulate dynamic behavior such as inlet distortion, surge or rotating stall. The technology being developed within the TEACC effort provides the necessary turbomachinery simulation for implementation into ALE3D. This paper describes a methodology to combine three-dimensional aerodynamic turbomachinery technology into the existing aerodynamic-structural interaction simulation, ALE3D to obtain the desired aerodynamic and structural integrated simulation for an aeropropulsion system.

  5. A Two-Stage Kalman Filter Approach for Robust and Real-Time Power System State Estimation

    SciTech Connect (OSTI)

    Zhang, Jinghe; Welch, Greg; Bishop, Gary; Huang, Zhenyu

    2014-04-01

    As electricity demand continues to grow and renewable energy increases its penetration in the power grid, realtime state estimation becomes essential for system monitoring and control. Recent development in phasor technology makes it possible with high-speed time-synchronized data provided by Phasor Measurement Units (PMU). In this paper we present a two-stage Kalman filter approach to estimate the static state of voltage magnitudes and phase angles, as well as the dynamic state of generator rotor angles and speeds. Kalman filters achieve optimal performance only when the system noise characteristics have known statistical properties (zero-mean, Gaussian, and spectrally white). However in practice the process and measurement noise models are usually difficult to obtain. Thus we have developed the Adaptive Kalman Filter with Inflatable Noise Variances (AKF with InNoVa), an algorithm that can efficiently identify and reduce the impact of incorrect system modeling and/or erroneous measurements. In stage one, we estimate the static state from raw PMU measurements using the AKF with InNoVa; then in stage two, the estimated static state is fed into an extended Kalman filter to estimate the dynamic state. Simulations demonstrate its robustness to sudden changes of system dynamics and erroneous measurements.

  6. Evaporative Coolers | Department of Energy

    Office of Environmental Management (EM)

    Home Cooling Systems Air Conditioning Evaporative Coolers Fans Radiant Cooling Ventilation for Cooling Whole-House Fans Home Heating Systems Heat Pump Systems Water Heating...

  7. An indices approach for evaluating the performance of fenestration systems in nonresidential buildings

    SciTech Connect (OSTI)

    Sullivan, R.; Arasteh, D.; Papamichael, K.; Kim, J.J.; Johnson, R.; Selkowitz, S.; McCluney, R.

    1987-11-01

    We present results from the first phase of a project to develop a fenestration performance design tool to be used by builders, designers, architects, utility auditors, etc. In phase 1 we defined the design tool concept and the experimental and analytical methodologies required to achieve the project goal. We defined five fenestration performance indices, which when combined with user- specified weighting factors yield a single figure of merit. Three of the indices are related to the effects of fenestration on building energy performance: fuel and electric use and peak electric demand. The other two are related to thermal and visual comfort. We derived index values and correlations to window design parameters by creating a data base consisting of a large number of building energy simulations for a prototypical office building module using the DOE-2 computer simulation program. Four glazing types and two shading devices were combined in several ways so that a representative sampling of realistic fenestration systems was analyzed. 9 refs., 10 figs.

  8. Probabilistic Approach to Quantifying the Contribution of Variable Generation and Transmission to System Reliability: Preprint

    SciTech Connect (OSTI)

    Ibanez, E.; Milligan, M.

    2012-09-01

    The increasing electrical load served by variable generation (VG), such as wind and solar energy, in the United States and many other countries has stimulated an interesting line of research to better quantify the capacity value of these resources. Methods applied traditionally to thermal units based on their average outage rates do not apply to VG because of their uncertain and non-dispatchable nature. The North American Electric Reliability Corporation's Integration of Variable Generation Task Force recently released a report that highlighted the need to develop and benchmark underlying loss-of-load expectation and related metrics that reasonably and fairly calculate the contribution to planning reserves, or capacity value, of solar and wind power. As the fraction of generation coming from VG becomes more significant, their estimated capacity value will have a larger impact on system planning. In this paper, we provide a method to include VG in traditional probabilistic-based adequacy methods. This method has been implemented in the Renewable Energy Probabilistic Resource Assessment tool developed at the National Renewable Energy Laboratory. Through an example based on the U.S. Western Interconnection, this method is applied to assess the effect that transmission can have on resource adequacy. We also analyze the interactions between available transmission and capacity value for VG.

  9. Analysis of liquid natural gas as a truck fuel: a system dynamics approach

    SciTech Connect (OSTI)

    Bray, M.A.; Sebo, D.E.; Mason, T.L.; Mills, J.I.; Rice, R.E.

    1996-10-01

    The purpose of this analysis is to evaluate the potential for growth in use of liquid natural gas (LNG) fueled trucks. . A system dynamics model was constructed for the analysis and a variety of scenarios were investigated. The analysis considers the economics of LNG fuel in the context of the trucking industry to identify barriers to the increased use of LNG trucks and potential interventions or leverage points which may overcome these barriers. The study showed that today, LNG use in trucks is not yet economically viable. A large change in the savings from fuel cost or capital cost is needed for the technology to take off. Fleet owners have no way now to benefit from the environmental benefits of LNG fuel nor do they benefit from the clean burning nature of the fuel. Changes in the fuel cost differential between diesel and LNG are not a research issue. However, quantifying the improvements in reliability and wear from the use of clean fuel could support increased maintenance and warranty periods. Many people involved in the use of LNG for trucks believe that LNG has the potential to occupy a niche within the larger diesel truck business. But if LNG in trucks can become economic, the spread of fuel stations and technology improvements could lead to LNG trucks becoming the dominant technology. An assumption in our simulation work is that LNG trucks will be purchased when economically attractive. None of the simulation results show LNG becoming economic but then only to the level of a niche market.

  10. Introducing the Market to High-performance Building on Hilton Head Island

    SciTech Connect (OSTI)

    Rudd, Armin

    2007-12-01

    The whole-house performance approach described here builds a framework of principals,options, and plan for quality execution of producing high-performance homes.

  11. Lighting Design | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    as part of your whole-house design -- an approach for building an energy-efficient home. Indoor Lighting Design When designing indoor lighting for energy efficiency,...

  12. Building America Whole-House Solutions for New Homes: Winchester Homes and Camberly Homes- Silver Spring, Maryland (Fact Sheet)

    Broader source: Energy.gov [DOE]

    The Partnership for Home Innovation team worked with the builder to develop a new set of high performance home designs—including advanced wall and HVAC systems—that could be applicable on a...

  13. Building America Whole-House Solutions for Existing Homes: 56th and Walnut: A Philly Gut Rehab Development

    Broader source: Energy.gov [DOE]

    In this project, CPM partnered with the Consortium for Advanced Residential Buildings team to renovate 32 units in 11 three-story, historic, brick masonry urban buildings.

  14. Existing Whole-House Solutions Case Study: Group Home Energy Efficiency Retrofit for 30% Energy Savings, Washington, D.C.

    SciTech Connect (OSTI)

    2013-11-01

    Energy efficiency retrofits (EERs) face many challenges on the path to scalability. Limited budgets, cost effectiveness, risk factors, and accessibility impact the type and the extent of measures that can be implemented feasibly to achieve energy savings goals. Group home retrofits can face additional challenges than those in single family homes – such as reduced access (occupant-in-place restrictions) and lack of incentives for occupant behavioral change. This project studies the specification, implementation, and energy savings from an EER in a group home, with an energy savings goal of 30%. This short term test report chronicles the retrofit measures specified, their projected cost-effectiveness using building energy simulations, and the short term test results that were used to characterize pre-retrofit and post-retrofit conditions. Additionally, the final report for the project will include analysis of pre- and post-retrofit performance data on whole building energy use, and an assessment of the energy impact of occupant interface with the building (i.e., window operation). Ultimately, the study’s results will be used to identify cost effective EER measures that can be implemented in group homes, given constraints that are characteristic of these buildings. Results will also point towards opportunities for future energy savings.

  15. Existing Whole-House Solutions Case Study: Habitat for Humanity of Palm Beach County, Lake Worth, Florida

    SciTech Connect (OSTI)

    none,

    2012-03-01

    PNNL and Florida Solar Energy Center worked with Habitat for Humanity of Palm Beach County to upgrade an empty 1996 home with a 14.5 SEER AC, heat pump water heater, CFLs, more attic insulation, and air sealing to cut utility bills $872 annually.

  16. Existing Whole-House Solutions Case Study: Evaluating Energy Savings in All-Electric Public Housing in the Pacific Northwest

    SciTech Connect (OSTI)

    2014-03-01

    This project analyzes the cost effectiveness of energy-saving measures installed by a large public housing authority in Salishan, and evaluates those solutions to improve efficiency of affordable housing for new and existing homes. Research focuses on the modeled and measured energy usage of the first six phases of construction, and compares the energy usage of those phases to phase 7.

  17. Building America Whole-House Solutions for New Homes: Hood River Passive House- Hood River, Oregon (Fact Sheet)

    Broader source: Energy.gov [DOE]

    The Hood River Passive Project incorporates high R-Value assemblies, extremely tight construction, high performance doors and windows, solar thermal DHW, heat recovery ventilation, moveable external shutters and a high performance ductless minisplit heat pump.

  18. New Whole-House Solutions Case Study: Pulte Homes and Communities of Del Webb, Las Vegas Division, NV

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Pulte's Las Vegas has been a local leader in energy efficiency since 1997 when Nat Hodgson, Vice President of Construction for the Las Vegas Division of Pulte Homes and Communities of Del Webb teamed up with the U.S. Department of Energy's Building America team lead Building Science Corporation to build pilot homes in Las Vegas. Pulte has built 100% ENERGY STAR homes in the Las Vegas valley since 1999 and builds the most ENERGY STAR-labeled homes nationwide. In January 2009, Pulte opened its

  19. Building America Whole-House Solutions for Existing Homes: Group Home Energy Efficiency Retrofit for 30% Energy Savings (Fact Sheet)

    Broader source: Energy.gov [DOE]

    This project studies the specification, implementation, and energy savings from an energy efficiency retrofit in a group home, with an energy savings goal of 30%.

  20. Building America Whole-House Solutions for Existing Homes: Passive Room-to-Room Air Transfer, Fresno, California (Fact Sheet)

    Broader source: Energy.gov [DOE]

    In this project, IBACOS, a U.S. Department of Energy Building America team, assessed a strategy for providing conditioned air to bedrooms when the bedroom doors are closed and measured potential thermal discomfort that occupants may experience when this strategy is used. Builders can use this information to discuss space conditioning options for low-load houses with their clients to determine acceptable comfort levels for occupants in these cost-optimized, energy-efficient houses.

  1. Existing Whole-House Solutions Case Study: National Grid Deep Energy Retrofit Pilot, Massachusetts and Rhode Island

    SciTech Connect (OSTI)

    2014-03-01

    Between December, 2009 and December, 2012 42 deep energy retrofit (DER) projects were completed through a pilot program sponsored by National Grid and conducted in Massachusetts and Rhode Island. Thirty-seven of these projects were comprehensive retrofits while five were partial DERs, meaning that high performance retrofit was implemented for a single major enclosure component or a limited number of major enclosure components. Building Science Corporation developed a consistent "package" of measures in terms of the performance targeted for major building components. Pre- and post-retrofit air leakage measurements were performed for each of the projects. Each project also reported information about project costs including identification of energy-related costs. Post-retrofit energy-use data was obtained for 29 of the DER projects, and was analyzed based on the net energy used by the DER project regardless of whether the energy was generated on site or delivered to the site. Based on the community experience, this DER package is expected to result in yearly source energy use near 110 MMBtu/year or approximately 40% below the Northeast regional average. Larger to medium sized homes that successful implement these retrofits can be expected to achieve source EUI that is comparable to Passive House targets for new construction. The community of DER projects show post-retrofit airtightness below 1.5 ACH50 to be eminently achievable.

  2. New Whole-House Solutions Case Study: Heritage Buildings, Inc., and Energy Smart Home Plans, Leland, North Carolina

    SciTech Connect (OSTI)

    none,

    2012-10-01

    PNNL worked with North Carolina Heritage Buildings and Energy Smart Home Plans to design zero-energy ready homes that score under HERS 60 for less than 2% added cost over code construction.

  3. New Whole-House Solutions Case Study: Ravenwood Homes and Energy Smart Home Plans, Inc., Cape Coral, Florida

    SciTech Connect (OSTI)

    none,

    2012-10-01

    PNNL, Florida HERO, and Energy Smart Home Plans helped Ravenwood Homes achieve a HERS 15 with PV or HERS 65 without PV on a home in Florida with SEER 16 AC, concrete block and rigid foam walls, high-performance windows, solar water heating, and 5.98 kW PV.

  4. New Whole-House Solutions Case Study: Tommy Williams Homes Initial Performance of Two Zero Energy Homes, Gainesville, Florida

    SciTech Connect (OSTI)

    none,

    2011-11-01

    Tommy Williams Homes worked with PNNL, Florida HERO, Energy Smart Home Plans, and Florida Solar Energy Center to design and test two zero energy homes. Energy use was 30% lower in one home and 60% lower in the other.

  5. Building America Whole-House Solutions for New Homes: Transformations, Inc. Net Zero Energy Communities (Fact Sheet)

    Broader source: Energy.gov [DOE]

    In 2009, Transformations, Inc. partnered with the Building Science Corporation team to build new net zero energy houses in three developments in Massachusetts that achieve a 45% reduction in energy use compared to 2009 International Residential Code.

  6. New Whole-House Solutions Case Study: Northwest Energy Efficient Manufactured Housing Program High-Performance Test Homes - Pacific Northwest

    SciTech Connect (OSTI)

    2015-05-01

    This project represents the third phase of a multi-year effort to develop and bring to market a High Performance Manufactured Home (HPMH). In this project, the Northwest Energy Efficient Manufactured Housing Program worked with Building America Partnership for Improved Residential Construction and Bonneville Power Administration to help four factory homebuilders build prototype zero energy ready manufactured homes, resulting in what is expected to be a 30% savings relative to the Building America Benchmark. (The actual % savings varies depending on choice of heating equipment and climate zone). Previous phases of this project created a HPMH specification and prototyped individual measures from the package to obtain engineering approvals and develop preliminary factory construction processes. This case study describes the project team's work during 2014 to build prototype homes to the HPMH specifications and to monitor the homes for energy performance and durability. Monitoring is expected to continue into 2016.

  7. Existing Whole-House Solutions Case Study: Exterior Insulation Pre- and Post-Retrofit, Syracuse, New York

    SciTech Connect (OSTI)

    2015-05-01

    In this study, IBACOS, in collaboration with GreenHomes America, Inc., was contracted by the New York State Energy Research and Development Authority (NYSERDA) to research exterior wall insulation solutions for enclosure upgrades. This case study describes the deep energy retrofit of three test homes in the Syracuse, New York area and represent these enclosure strategies: rigid foam insulation; spray foam insulation, and a control house that follows Home Performance with ENERGY STAR (HPwES) guidelines.

  8. New Whole-House Solutions Case Study: Singer Village - A Cold Climate Zero Energy Ready Home, Derby, Connecticut

    SciTech Connect (OSTI)

    2015-03-01

    After progressively incorporating ENERGY STAR for Homes Versions 1, 2, and 3 into its standard practices over the years, builder Brookside Development was seeking to build an even more sustainable product that would further increase energy efficiency, while also addressing indoor air quality, water conservation, renewable-ready, and resiliency. These objectives align with the framework of the U.S. Department of Energy Zero Energy Ready Home program, which builds upon the comprehensive building science requirements of ENERGY STAR for Homes Version 3 and proven Building America innovations and best practices. To meet this goal, Consortium for Advanced Residential Buildings partnered with Brookside Development to design and construct the first zero energy ready home in a development of seven new homes on the old Singer Estate in Derby, Connecticut.

  9. New Whole-House Solutions Case Study: Zero Energy Ready Home Multifamily Project: Mutual Housing at Spring Lake

    SciTech Connect (OSTI)

    D. Springer and A. German

    2015-09-01

    Building cost effective, high performance homes that provide superior comfort, health, and durability is the goal of the Department of Energy's (DOE's) Zero Energy Ready Homes (ZERH) program. This case study describes the development of a 62-unit multifamily community constructed by nonprofit developer Mutual Housing at the Spring Lake subdivision in Woodland, California. The Spring Lake project is expected to be the first ZERH-certified multifamily project nationwide. Building America team Alliance for Residential Building Innovation worked with Mutual Housing throughout the project. An objective of this project was to gain a highly visible foothold for residential buildings built to the DOE ZERH specification that can be used to encourage participation by other California builders.

  10. Existing Whole-House Solutions Case Study: Islip Housing Authority Energy Efficiency Turnover Protocols, Islip, New York

    SciTech Connect (OSTI)

    J. Dentz, F. Conlin, D. Podorson, and K. Alaigh

    2014-08-01

    In this project, Building America team ARIES worked with two public housing authorities (PHA) to develop packages of energy efficiency retrofit measures the PHAs can cost effectively implement at the time when units are refurbished between occupancies.

  11. New Whole-House Solutions Case Study: EcoVillage: A Net Zero Energy Ready Community, Ithaca, New York

    SciTech Connect (OSTI)

    2015-04-01

    The Consortium for Advanced Residential Buildings is working with the EcoVillage co-housing community and builder AquaZephyr in Ithaca, New York, on their third neighborhood called the Third Residential EcoVillage Experience (TREE). This community-scale project consists of 40 housing units—15 apartments, and 25 single family residences that range in size from 1,250 ft2–1,664 ft2 and cost from $80,000 to $235,000. The community is pursing DOE Zero Energy Ready Home (ZERH), US Green Building Council Leadership in Energy and Environmental Design (LEED) Gold, and ENERGY STAR certifications for the entire project.

  12. Existing Whole-House Solutions Case Study: Evaluation of a Multifamily Retrofit in Climate Zone 5, Boulder, Colorado

    SciTech Connect (OSTI)

    2013-11-01

    In 2009, a 37-unit apartment complex located in Boulder, Colorado, underwent an energy retrofit to comply with Boulder SmartRegs Ordinance, a mandate that requires all rental properties to meet certain energy efficiency standards by 2018. The Consortium of Advanced Residential Buildings (CARB), a U.S. Department of Energy Building America team, worked with city planners and building owners to evaluate this program and recently completed a case study evaluating the effectiveness of a collection of retrofit measures.

  13. New Whole-House Solutions Case Study: Meeting DOE Challenge Home Program Certification - Chicago, IL; Denver, CO; Devens, MA

    SciTech Connect (OSTI)

    2015-01-01

    In this project, three production home builders—K. Hovnanian Homes, David Weekley Homes, and Transformations, Inc.—partnered with Building America team Building Science Corporation to evaluate the certification of five test homes to the new DOE Challenge Home program performance standard (now DOE Zero Energy Ready Home program). The builders identified key benefits and barriers that impacted the certification of the test homes, and the likelihood of whether DOE Challenge Home certification would be pursued in future homes

  14. Building America Whole-House Solutions for New Home: Fort Devens: Cold Climate Market-Rate Townhomes

    Broader source: Energy.gov [DOE]

    Fort Devens: Cold Climate Market-Rate Townhomes Targeting HERS Index of 40, Harvard, Massachusetts (Fact Sheet), Building America Case Study: Efficient Solutions for New and Existing Homes, Building Technologies Office (BTO)

  15. Building America Whole-House Solutions for Existing Homes: Cascade Apartments- Deep Energy Multifamily Retrofit (Fact Sheet)

    Broader source: Energy.gov [DOE]

    In December of 2009-10, King County Housing Authority implemented energy retrofit improvements in the Cascade multifamily community, located in Kent, Washington, which resulted in annual energy cost savings of 22%, improved comfort and air quality for residents, and increased durability of the units.

  16. Existing Whole-House Solutions Case Study: 56th and Walnut: A Philly Gut Rehab Development, Philadelphia, Pennsylvania

    SciTech Connect (OSTI)

    2013-11-01

    Load-bearing brick-masonry multifamily buildings are prevalent in urban areas across much of the Northeast and mid-Atlantic. In most instances, these buildings are uninsulated unless they have been renovated within the past two decades. Affordable housing capital budgets typically limit what can be spent and energy improvements often take a back seat to basic capital improvements such as interior finish upgrades and basic repairs. The Consortium for Advanced Residential Buildings (CARB) is researching cost-effective solution packages for significant energy efficiency and indoor air-quality improvements in these urban buildings.

  17. Building America Whole-House Solutions for New Homes: High-Performance Ducts in Hot-Dry Climates

    Broader source: Energy.gov [DOE]

    The Alliance for Residential Building Innovation worked with Pacific Gas & Electric Company to implement various high-performance duct strategies, including ducts located fully within conditioned space, ducts in sealed attics, and a “high-performance attic” that adds insulation to the roof deck of a normally vented attic.

  18. Examination of the role of nuclear deterrence in the 21st century: a systems analysis approach

    SciTech Connect (OSTI)

    Martz, Joseph C; Stevens, Patrice A; Branstetter, Linda; Hoover, Edward; O' Brien, Kevin; Slavin, Adam; Caswell, David

    2010-01-01

    competing objectives have been stated across the spectrum of political, social, and military thought. These objectives include goals of ratification of the Comprehensive Test Ban Treaty, recommitment to further downsizing of the nuclear arsenal, embracing a long-term goal of the elimination of nuclear weapons, limitations on both the production complex and upgrades to nuclear weapons and delivery systems, and controls and constraints to limit proliferation of nuclear materials and weapons, particularly to rogue states and terrorist groups.

  19. A Systems Genetic Approach to Identify Low Dose Radiation-Induced Lymphoma Susceptibility/DOE2013FinalReport

    SciTech Connect (OSTI)

    Balmain, Allan; Song, Ihn Young

    2013-05-15

    The ultimate goal of this project is to identify the combinations of genetic variants that confer an individual's susceptibility to the effects of low dose (0.1 Gy) gamma-radiation, in particular with regard to tumor development. In contrast to the known effects of high dose radiation in cancer induction, the responses to low dose radiation (defined as 0.1 Gy or less) are much less well understood, and have been proposed to involve a protective anti-tumor effect in some in vivo scientific models. These conflicting results confound attempts to develop predictive models of the risk of exposure to low dose radiation, particularly when combined with the strong effects of inherited genetic variants on both radiation effects and cancer susceptibility. We have used a ??Systems Genetics approach in mice that combines genetic background analysis with responses to low and high dose radiation, in order to develop insights that will allow us to reconcile these disparate observations. Using this comprehensive approach we have analyzed normal tissue gene expression (in this case the skin and thymus), together with the changes that take place in this gene expression architecture a) in response to low or high- dose radiation and b) during tumor development. Additionally, we have demonstrated that using our expression analysis approach in our genetically heterogeneous/defined radiation-induced tumor mouse models can uniquely identify genes and pathways relevant to human T-ALL, and uncover interactions between common genetic variants of genes which may lead to tumor susceptibility.

  20. A One System Integrated Approach to Simulant Selection for Hanford High Level Waste Mixing and Sampling Tests

    SciTech Connect (OSTI)

    Thien, Mike G.; Barnes, Steve M.

    2013-01-17

    The Hanford Tank Operations Contractor (TOC) and the Hanford Waste Treatment and Immobilization Plant (WTP) contractor are both engaged in demonstrating mixing, sampling, and transfer system capabilities using simulated Hanford High-Level Waste (HLW) formulations. This represents one of the largest remaining technical issues with the high-level waste treatment mission at Hanford. Previous testing has focused on very specific TOC or WTP test objectives and consequently the simulants were narrowly focused on those test needs. A key attribute in the Defense Nuclear Facilities Safety Board (DNFSB) Recommendation 2010-2 is to ensure testing is performed with a simulant that represents the broad spectrum of Hanford waste. The One System Integrated Project Team is a new joint TOC and WTP organization intended to ensure technical integration of specific TOC and WTP systems and testing. A new approach to simulant definition has been mutually developed that will meet both TOC and WTP test objectives for the delivery and receipt of HLW. The process used to identify critical simulant characteristics, incorporate lessons learned from previous testing, and identify specific simulant targets that ensure TOC and WTP testing addresses the broad spectrum of Hanford waste characteristics that are important to mixing, sampling, and transfer performance are described.

  1. Geochemical Enhancement Of Enhanced Geothermal System Reservoirs: An Integrated Field And Geochemical Approach

    SciTech Connect (OSTI)

    Joseph N. Moore

    2007-12-31

    . In contrast, fluid inclusions trapped prior to injection are relatively gas rich. These results suggest that the rocks undergo extensive microfracturing during injection and that the composition of the fluid inclusions will be biased toward the youngest event. Interactions between the reservoir rocks and injectate were modeled using the non-isothermal reactive geochemical transport code TOUGHREACT. Changes in fluid pH, fracture porosity, fracture permeability, fluid temperature, and mineral abundances were monitored. The simulations predict that amorphous silica will precipitate primarily within a few meters of the injection well and that mineral deposition will lead to rapid declines in fracture porosity and permeability, consistent with field observations. In support of Enhanced Geothermal System development, petrologic studies of Coso well 46A-19RD were conducted to determine the regions that are most likely to fail when stimulated. These studies indicate that the most intensely brecciated and altered rocks in the zone targeted for stimulation (below 10,000 ft (3048 m)) occur between 11,200 and 11,350 ft (3414 and 3459 m). This zone is interpreted as a shear zone that initially juxtaposed quartz diorite against granodiorite. Strong pervasive alteration and veining within the brecciated quartz diorite and granodiorite suggest this shear zone was permeable in the past. This zone of weakness was subsequently exploited by a granophyre dike whose top occurs at 11,350 ft (3459 m). The dike is unaltered. We anticipate, based on analysis of the well samples that failure during stimulation will most likely occur on this shear zone.

  2. A stochastic approach to quantifying the blur with uncertainty estimation for high-energy X-ray imaging systems

    SciTech Connect (OSTI)

    Fowler, Michael J.; Howard, Marylesa; Luttman, Aaron; Mitchell, Stephen E.; Webb, Timothy J.

    2015-06-03

    One of the primary causes of blur in a high-energy X-ray imaging system is the shape and extent of the radiation source, or ‘spot’. It is important to be able to quantify the size of the spot as it provides a lower bound on the recoverable resolution for a radiograph, and penumbral imaging methods – which involve the analysis of blur caused by a structured aperture – can be used to obtain the spot’s spatial profile. We present a Bayesian approach for estimating the spot shape that, unlike variational methods, is robust to the initial choice of parameters. The posterior is obtained from a normal likelihood, which was constructed from a weighted least squares approximation to a Poisson noise model, and prior assumptions that enforce both smoothness and non-negativity constraints. A Markov chain Monte Carlo algorithm is used to obtain samples from the target posterior, and the reconstruction and uncertainty estimates are the computed mean and variance of the samples, respectively. Lastly, synthetic data-sets are used to demonstrate accurate reconstruction, while real data taken with high-energy X-ray imaging systems are used to demonstrate applicability and feasibility.

  3. A stochastic approach to quantifying the blur with uncertainty estimation for high-energy X-ray imaging systems

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Fowler, Michael J.; Howard, Marylesa; Luttman, Aaron; Mitchell, Stephen E.; Webb, Timothy J.

    2015-06-03

    One of the primary causes of blur in a high-energy X-ray imaging system is the shape and extent of the radiation source, or ‘spot’. It is important to be able to quantify the size of the spot as it provides a lower bound on the recoverable resolution for a radiograph, and penumbral imaging methods – which involve the analysis of blur caused by a structured aperture – can be used to obtain the spot’s spatial profile. We present a Bayesian approach for estimating the spot shape that, unlike variational methods, is robust to the initial choice of parameters. The posteriormore » is obtained from a normal likelihood, which was constructed from a weighted least squares approximation to a Poisson noise model, and prior assumptions that enforce both smoothness and non-negativity constraints. A Markov chain Monte Carlo algorithm is used to obtain samples from the target posterior, and the reconstruction and uncertainty estimates are the computed mean and variance of the samples, respectively. Lastly, synthetic data-sets are used to demonstrate accurate reconstruction, while real data taken with high-energy X-ray imaging systems are used to demonstrate applicability and feasibility.« less

  4. Building America Top Innovations 2012: Low-Cost Ventilation in Production Housing

    SciTech Connect (OSTI)

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America research on simple whole-house ventilation systems that cost less than $350 to install and meet code requirements.

  5. Low-Cost Ventilation in Production Housing- Building America Top Innovation

    Broader source: Energy.gov [DOE]

    This Building America Innovations profile describes Building America research on simple whole-house ventilation systems that cost less than $350 to install and meet code requirements.

  6. Self-Assembly by Instruction: Designing Nanoscale Systems Using DNA-Based Approaches (474th Brookhaven Lecture)

    SciTech Connect (OSTI)

    Gang, Oleg

    2012-01-18

    In the field of nanoscience, if you can control how nanoparticles self-assemble in particular structures — joining each other, for example, as molecules can form, atom-by-atom — you can design new materials that have unique properties that industry needs. Nature already uses the DNA genetic code to instruct the building of specific proteins and whole organisms in both plants and people. Taking a cue from nature, scientists at BNL devised a way of using strands of synthetic DNA attached to the surface of nanoparticles to instruct them to self-assemble into specific nanoscale structures, clusters, and three-dimensional organizations. Novel materials designed and fabricated this way promise use in photovoltaics, energy storage, catalysis, cell-targeted systems for more effective medical treatments, and biomolecular sensing for environmental monitoring and medical applications. To find out more about the rapid evolution of this nanoassembly method and its applications, join Physicist Oleg Gang of the Center for Functional Nanomaterials (CFN) as he gives the 474th Brookhaven Lecture, titled “Self-Assembly by Instruction: Designing Nanoscale Systems Using DNA-Based Approaches." Gang, who has led this work at the CFN, will explain the rapid evolution of this nanoassembly method, and discuss its present and future applications in highly specific biosensors, optically active nano-materials, and new ways to fabricate complex architectures in a rational manner via self-assembly. Gang and his colleagues used the CFN and the National Synchrotron Light Source (NSLS) facilities to perform their groundbreaking research. At the CFN, the scientists used electron microscopes and optical methods to visualize the clusters that they fabricated. At the NSLS, they applied x-rays to study a particles-assembly process in solution, DNA’s natural environment. Gang earned a Ph.D. in soft matter physics from Bar-Ilan University in 2000, and he was a Rothschild Fellow at Harvard

  7. Extending Performance and Evaluating Risks of PV Systems Failure Using a Fault Tree and Event Tree Approach: Analysis of the Possible Application

    SciTech Connect (OSTI)

    Colli A.

    2012-06-03

    Performance and reliability of photovoltaic (PV) systems are important issues in the overall evaluation of a PV plant and its components. While performance is connected to the amount of energy produced by the PV installation in the working environmental conditions, reliability impacts the availability of the system to produce the expected amount of energy. In both cases, the evaluation should be done considering information and data coming from indoor as well as outdoor tests. In this paper a way of re-thinking performance, giving it a probabilistic connotation, and connecting the two concepts of performance and reliability is proposed. The paper follows a theoretical approach and discusses the way to obtaining such information, facing benefits and problems. The proposed probabilistic performance accounts for the probability of the system to function correctly, thus passing through the complementary evaluation of the probability of system malfunctions and consequences. Scenarios have to be identified where the system is not functioning properly or at all. They are expected to be combined in a probabilistic safety analysis (PSA) based approach, providing not only the required probability, but also being capable of giving a prioritization of the risks and the most dominant scenario associated to a specific situation. This approach can offer the possibility to highlight the most critical parts of a PV system, as well as providing support in design activities identifying weak connections.

  8. Systems Biology Approaches to Dissecting Plant Cell Wall Biosynthesis Genes in Poplus (JGI Seventh Annual User Meeting 2012: Genomics of Energy and Environment)

    ScienceCinema (OSTI)

    Glass, N Louise [UC Berkeley

    2013-01-25

    N. Louise Glass from the University of California, Berkeley, presents a talk titled "Systems Biology Approaches to Dissecting Plant Cell Wall Biosynthesis Genes in Poplus" at the JGI 7th Annual Users Meeting: Genomics of Energy & Environment Meeting on March 22, 2012 in Walnut Creek, California.

  9. Systems Biology Approaches to Dissecting Plant Cell Wall Biosynthesis Genes in Poplus (JGI Seventh Annual User Meeting 2012: Genomics of Energy and Environment)

    SciTech Connect (OSTI)

    Glass, N Louise [UC Berkeley] [UC Berkeley

    2012-03-22

    N. Louise Glass from the University of California, Berkeley, presents a talk titled "Systems Biology Approaches to Dissecting Plant Cell Wall Biosynthesis Genes in Poplus" at the JGI 7th Annual Users Meeting: Genomics of Energy & Environment Meeting on March 22, 2012 in Walnut Creek, California.

  10. Vehicle Technologies Office Merit Review 2014: A MultiAir / MultiFuel Approach to Enhancing Engine System Efficiency

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation given by Chrysler at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about a multiair/multifuel approach to...

  11. Ab initio molecular orbital-configuration interaction based quantum master equation (MOQME) approach to the dynamic first hyperpolarizabilities of asymmetric π-conjugated systems

    SciTech Connect (OSTI)

    Kishi, Ryohei; Fujii, Hiroaki; Minami, Takuya; Shigeta, Yasuteru; Nakano, Masayoshi

    2015-01-22

    In this study, we apply the ab initio molecular orbital - configuration interaction based quantum master equation (MOQME) approach to the calculation and analysis of the dynamic first hyperpolarizabilities (β) of asymmetric π-conjugated molecules. In this approach, we construct the excited state models by the ab initio configuration interaction singles method. Then, time evolutions of system reduced density matrix ρ(t) and system polarization p(t) are calculated by the QME approach. Dynamic β in the second harmonic generation is calculated based on the nonperturbative definition of nonlinear optical susceptibility, using the frequency domain system polarization p(ω). Spatial contributions of electrons to β are analyzed based on the dynamic hyperpolarizability density map, which visualizes the second-order response of charge density oscillating with a frequency of 2ω. We apply the present method to the calculation of the dynamic β of a series of donor/acceptor substituted polyene oligomers, and then discuss the applicability of the MOQME method to the calculation and analysis of dynamic NLO properties of molecular systems.

  12. A coarse-graining approach for molecular simulation that retains the dynamics of the all-atom reference system by implementing hydrodynamic interactions

    SciTech Connect (OSTI)

    Markutsya, Sergiy; Lamm, Monica H.

    2014-11-07

    We report on a new approach for deriving coarse-grained intermolecular forces that retains the frictional contribution that is often discarded by conventional coarse-graining methods. The approach is tested for water and an aqueous glucose solution, and the results from the new implementation for coarse-grained molecular dynamics simulation show remarkable agreement with the dynamics obtained from reference all-atom simulations. The agreement between the structural properties observed in the coarse-grained and all-atom simulations is also preserved. We discuss how this approach may be applied broadly to any existing coarse-graining method where the coarse-grained models are rigorously derived from all-atom reference systems.

  13. Essential Systems Functionality Inspection Criteria, Approach, and Lines of Inquiry, October 16, 2008 (HSS CRAD 64-11 Rev. 2)

    Broader source: Energy.gov [DOE]

    The Essential Systems Functionality (ESF) inspection will evaluate the effectiveness of programs and processes for engineering design and safety basis, construction and installation, configuration management, surveillance testing, maintenance, operations, cognizant system engineer (CSE) and safety system oversight (SSO), and feedback and improvement of selected safety systems. This review will evaluate the effectiveness in maintaining the functionality of these safety systems. The ESF review will be performed in the context of integrated safety management (ISM), although the inspection criteria, activities and lines of inquiry are organized by ESF functional areas rather than ISM principles and core functions.

  14. Vehicle Technologies Office 2013 Merit Review: A MultiAir / MultiFuel Approach to Enhancing Engine System Efficiency

    Broader source: Energy.gov [DOE]

    A presentation given by Chrysler at the 2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting on its project to research a multi-air and multi-fuel approach to improving engine efficiency.

  15. Meeting Residential Ventilation Standards Through Dynamic Control of Ventilation Systems

    SciTech Connect (OSTI)

    Sherman, Max H.; Walker, Iain S.

    2011-04-01

    Existing ventilation standards, including American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE) Standard 62.2, specify continuous operation of a defined mechanical ventilation system to provide minimum ventilation, with time-based intermittent operation as an option. This requirement ignores several factors and concerns including: other equipment such as household exhaust fans that might incidentally provide ventilation, negative impacts of ventilation when outdoor pollutant levels are high, the importance of minimizing energy use particularly during times of peak electricity demand, and how the energy used to condition air as part of ventilation system operation changes with outdoor conditions. Dynamic control of ventilation systems can provide ventilation equivalent to or better than what is required by standards while minimizing energy costs and can also add value by shifting load during peak times and reducing intake of outdoor air contaminants. This article describes the logic that enables dynamic control of whole-house ventilation systems to meet the intent of ventilation standards and demonstrates the dynamic ventilation system control concept through simulations and field tests of the Residential Integrated Ventilation-Energy Controller (RIVEC).

  16. Building America Case Study: Ventilation System Effectiveness and Tested Indoor Air Quality Impacts, Tyler, Texas

    SciTech Connect (OSTI)

    2015-08-01

    ?Ventilation system effectiveness testing was conducted at two unoccupied, single-family, detached lab homes at the University of Texas - Tyler. Five ventilation system tests were conducted with various whole-building ventilation systems. Multizone fan pressurization testing characterized building and zone enclosure leakage. PFT testing showed multizone air change rates and interzonal airflow filtration. Indoor air recirculation by a central air distribution system can help improve the exhaust ventilation system by way of air mixing and filtration. In contrast, the supply and balanced ventilation systems showed that there is a significant benefit to drawing outside air from a known outside location, and filtering and distributing that air. Compared to the Exhaust systems, the CFIS and ERV systems showed better ventilation air distribution and lower concentrations of particulates, formaldehyde and other VOCs. System improvement percentages were estimated based on four System Factor Categories: Balance, Distribution, Outside Air Source, and Recirculation Filtration. Recommended System Factors could be applied to reduce ventilation fan airflow rates relative to ASHRAE Standard 62.2 to save energy and reduce moisture control risk in humid climates. HVAC energy savings were predicted to be 8-10%, or $50-$75/year. Cumulative particle counts for six particle sizes, and formaldehyde and other Top 20 VOC concentrations were measured in multiple zones. The testing showed that single-point exhaust ventilation was inferior as a whole-house ventilation strategy.

  17. Bioenergy systems report: The AID (Agency for International Development) approach. Using agricultural and forestry wastes for the production of energy in support of rural development

    SciTech Connect (OSTI)

    Not Available

    1989-04-01

    The Biomass Energy Systems and Technology project (BEST) seeks to integrate natural resources, private sector expertise, and financial support in order to convert biomass into marketable energy products at existing agro-processing facilities. This report documents BEST's approach to biomass promotion and includes sections on: the rationale for the project's commodity focus (sugar cane, rice, and wood); the relevant U.S. biomass experience with rice, cane, and wood residues, etc., which BEST draws upon; A.I.D.'s experience in the field application of rice, wood, and cane residue bioenergy systems; economic analyses of biomass systems (using examples from Indonesia and Costa Rica); research initiatives to develop off-season fuels for sugar mills, advanced biomass conversion systems, and energy efficiency in sugar factories; and the environmental aspects of biomass (including its ability to be used without increasing global warming).

  18. Frontiers of Plant Cell Biology: Signals and Pathways, System-Based Approaches 22nd Symposium in Plant Biology (University of California-Riverside)

    SciTech Connect (OSTI)

    Minorsky, Peter V.

    2003-06-01

    The symposium ''Frontiers of Plant Cell Biology: Signals and Pathways, Systems-Based Approaches'' was held January 15-18, 2003 at the Riverside Convention Center in Riverside, California. The host organization for the symposium was the Center for Plant Cell Biology (CEPCEB) at the University of California, Riverside (UCR). The meeting, focusing on systems-based approaches to plant cell biology research, was the first of this kind in the field of plant biology. The speakers and nearly 100 posters placed emphasis on recent developments in plant cellular biology and molecular genetics, particularly those employing emerging genomic tools, thereby sharing the most current knowledge in the field and stimulating future advances. In attendance were many well-established scientists and young investigators who approach plant cell biology from different but complementary conceptual and technical perspectives. Indeed, many disciplines are converging in the field of cell biology, producing synergies that will enable plant scientists to determine the function of gene products in the context of living cells in whole organisms. New, cross-disciplinary collaborations, as well as the involvement of computer scientists and chemists in plant biology research, are likely additional outcomes of the symposium. The program included 39 invited session speakers and workshop/panel speakers. Sessions were convened on the following themes: Cell-Cell Communication; Protein Trafficking; Cell Surface, Extracellular Matrix and Cell Wall; Signal Transduction; Signal Transduction and Proteosome; and Systems-Based Approaches to Plant Cell Biology. Workshops on Chemical Genetics and Visual Microscopy were also presented. Abstracts from each of the speaker presentations, as well as the posters presented at the meeting were published in a program booklet given to the 239 faculty members, researchers, postdoctoral scientists and graduate students in attendance. The booklet thus serves as a reference for

  19. Benchmarking Non-Hardware Balance-of-System (Soft) Costs for U.S. Photovoltaic Systems, Using a Bottom-Up Approach and Installer Survey - Second Edition

    SciTech Connect (OSTI)

    Friedman, B.; Ardani, K.; Feldman, D.; Citron, R.; Margolis, R.; Zuboy, J.

    2013-10-01

    This report presents results from the second U.S. Department of Energy (DOE) sponsored, bottom-up data-collection and analysis of non-hardware balance-of-system costs -- often referred to as 'business process' or 'soft' costs -- for U.S. residential and commercial photovoltaic (PV) systems. In service to DOE's SunShot Initiative, annual expenditure and labor-hour-productivity data are analyzed to benchmark 2012 soft costs related to (1) customer acquisition and system design (2) permitting, inspection, and interconnection (PII). We also include an in-depth analysis of costs related to financing, overhead, and profit. Soft costs are both a major challenge and a major opportunity for reducing PV system prices and stimulating SunShot-level PV deployment in the United States. The data and analysis in this series of benchmarking reports are a step toward the more detailed understanding of PV soft costs required to track and accelerate these price reductions.

  20. PRINCEPS: A computer-based approach to the structural description and recognition of trends within structural databases, and its application to the Ce-Ni-Si System

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Guo, Yiming; Fredrickson, Daniel C.

    2016-04-01

    Intermetallic crystal structures offer an enormous structural diversity, with an endless array of structural motifs whose connection to stability and physical properties are often mysterious. Making sense of the often complex crystal structures that arise here, developing a clear structural description, and identifying connections to other phases can be laborious and require an encyclopedic knowledge of structure types. In this Article, we present PRINCEPS, an algorithm based on a new coordination environment projection scheme that facilitates the structural analysis and comparison of such crystal structures. We demonstrate the potential of this approach by applying it to the complex Ce-Ni-Si ternarymore » system, whose 17 binary and 21 ternary phases would present a daunting challenge to one seeking to understand the system by manual inspection (but has nonetheless been well-described through the heroic efforts of previous researchers). With the help of PRINCEPS, most of the ternary phases in this system can be rationalized as intergrowths of simple structural fragments, and grouped into a handful of structural series (with some outliers). Lastly, these results illustrate how the PRINCEPS approach can be used to organize a vast collection of crystal structures into structurally meaningful families, and guide the description of complex atomic arrangements.« less

  1. Evaluating Domestic Hot Water Distribution System Options With Validated Analysis Models

    SciTech Connect (OSTI)

    Weitzel, E.; Hoeschele, M.

    2014-09-01

    A developing body of work is forming that collects data on domestic hot water consumption, water use behaviors, and energy efficiency of various distribution systems. A full distribution system developed in TRNSYS has been validated using field monitoring data and then exercised in a number of climates to understand climate impact on performance. This study builds upon previous analysis modelling work to evaluate differing distribution systems and the sensitivities of water heating energy and water use efficiency to variations of climate, load, distribution type, insulation and compact plumbing practices. Overall 124 different TRNSYS models were simulated. Of the configurations evaluated, distribution losses account for 13-29% of the total water heating energy use and water use efficiency ranges from 11-22%. The base case, an uninsulated trunk and branch system sees the most improvement in energy consumption by insulating and locating the water heater central to all fixtures. Demand recirculation systems are not projected to provide significant energy savings and in some cases increase energy consumption. Water use is most efficient with demand recirculation systems, followed by the insulated trunk and branch system with a central water heater. Compact plumbing practices and insulation have the most impact on energy consumption (2-6% for insulation and 3-4% per 10 gallons of enclosed volume reduced). The results of this work are useful in informing future development of water heating best practices guides as well as more accurate (and simulation time efficient) distribution models for annual whole house simulation programs.

  2. Human factors evaluation of remote afterloading brachytherapy: Human error and critical tasks in remote afterloading brachytherapy and approaches for improved system performance. Volume 1

    SciTech Connect (OSTI)

    Callan, J.R.; Kelly, R.T.; Quinn, M.L.

    1995-05-01

    Remote Afterloading Brachytherapy (RAB) is a medical process used in the treatment of cancer. RAB uses a computer-controlled device to remotely insert and remove radioactive sources close to a target (or tumor) in the body. Some RAB problems affecting the radiation dose to the patient have been reported and attributed to human error. To determine the root cause of human error in the RAB system, a human factors team visited 23 RAB treatment sites in the US The team observed RAB treatment planning and delivery, interviewed RAB personnel, and performed walk-throughs, during which staff demonstrated the procedures and practices used in performing RAB tasks. Factors leading to human error in the RAB system were identified. The impact of those factors on the performance of RAB was then evaluated and prioritized in terms of safety significance. Finally, the project identified and evaluated alternative approaches for resolving the safety significant problems related to human error.

  3. DShaper: An approach for handling missing low-Q data in pair distribution function analysis of nanostructured systems

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Olds, Daniel; Wang, Hsiu -Wen; Page, Katharine L.

    2015-09-04

    In this work we discuss the potential problems and currently available solutions in modeling powder-diffraction based pair-distribution function (PDF) data from systems where morphological feature information content includes distances in the nanometer length scale, such as finite nanoparticles, nanoporous networks, and nanoscale precipitates in bulk materials. The implications of an experimental finite minimum Q-value are addressed by simulation, which also demonstrates the advantages of combining PDF data with small angle scattering data (SAS). We introduce a simple Fortran90 code, DShaper, which may be incorporated into PDF data fitting routines in order to approximate the so-called shape-function for any atomistic model.

  4. DShaper: An approach for handling missing low-Q data in pair distribution function analysis of nanostructured systems

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Olds, Daniel; Wang, Hsiu -Wen; Page, Katharine

    2015-01-01

    This study discusses the potential problems and currently available solutions in modeling powder-diffraction-based pair distribution function (PDF) data from systems where morphological feature information content includes distances in the nanometre length scale, such as finite nanoparticles, nanoporous networks and nanoscale precipitates in bulk materials. The implications of an experimental finite minimumQvalue are reviewed by simulation, which also demonstrates the advantages of combining PDF data with small-angle scattering data. A simple Fortran90 code, DShaper, is introduced, which may be incorporated into PDF data fitting routines in order to approximate the so-called `shape function' for any atomistic model.

  5. RDS - A systematic approach towards system thermal hydraulics input code development for a comprehensive deterministic safety analysis

    SciTech Connect (OSTI)

    Salim, Mohd Faiz; Roslan, Ridha; Ibrahim, Mohd Rizal Mamat

    2014-02-12

    Deterministic Safety Analysis (DSA) is one of the mandatory requirements conducted for Nuclear Power Plant licensing process, with the aim of ensuring safety compliance with relevant regulatory acceptance criteria. DSA is a technique whereby a set of conservative deterministic rules and requirements are applied for the design and operation of facilities or activities. Computer codes are normally used to assist in performing all required analysis under DSA. To ensure a comprehensive analysis, the conduct of DSA should follow a systematic approach. One of the methodologies proposed is the Standardized and Consolidated Reference Experimental (and Calculated) Database (SCRED) developed by University of Pisa. Based on this methodology, the use of Reference Data Set (RDS) as a pre-requisite reference document for developing input nodalization was proposed. This paper shall describe the application of RDS with the purpose of assessing its effectiveness. Two RDS documents were developed for an Integral Test Facility of LOBI-MOD2 and associated Test A1-83. Data and information from various reports and drawings were referred in preparing the RDS. The results showed that by developing RDS, it has made possible to consolidate all relevant information in one single document. This is beneficial as it enables preservation of information, promotes quality assurance, allows traceability, facilitates continuous improvement, promotes solving of contradictions and finally assisting in developing thermal hydraulic input regardless of whichever code selected. However, some disadvantages were also recognized such as the need for experience in making engineering judgments, language barrier in accessing foreign information and limitation of resources. Some possible improvements are suggested to overcome these challenges.

  6. Geographic information system for Long Island: An epidemiologic systems approach to identify environmental breast cancer risks on Long Island. Phase 1

    SciTech Connect (OSTI)

    Barancik, J.I.; Kramer, C.F.; Thode, H.C. Jr.

    1995-12-01

    BNL is developing and implementing the project ``Geographic Information System (GIS) for Long Island`` to address the potential relationship of environmental and occupational exposures to breast cancer etiology on Long Island. The project is divided into two major phases: The four month-feasibility project (Phase 1), and the major development and implementation project (Phase 2). This report summarizes the work completed in the four month Phase 1 Project, ``Feasibility of a Geographic Information System for Long Island.`` It provides the baseline information needed to further define and prioritize the scope of work for subsequent tasks. Phase 2 will build upon this foundation to develop an operational GIS for the Long Island Breast Cancer Study Project (LIBCSP).

  7. Electron capture and electron transport by fast ions penetrating solids: An open quantum system approach with sources and sinks

    SciTech Connect (OSTI)

    Seliger, Marek; Reinhold, Carlos O.; Minami, Tatsuya; Schultz, David R.; Pindzola, Michael S.; Yoshida, Shuhei; Burgdoerfer, Joachim; Lamour, Emily; Rozet, Jean-Pierre; Vernhet, Dominique

    2007-03-15

    We present a joint theoretical and experimental study of the time evolution of electronic states of highly charged hydrogenic ions formed by capture during transmission through solids as they undergo multiple collisions and radiative decay. For this transport problem we have developed an inhomogeneous nonunitary Lindblad master equation that allows for a description of open quantum systems with both sinks (electron loss) and source (capture) present. We apply this theoretical framework to study transient coherences created in electron capture by 13.6 MeV/amu Ar{sup 18+} ions transmitted through amorphous carbon foils and decoherence during subsequent interaction with the foil. In the limit of thin targets we can directly probe electron capture cross sections under single collision conditions, while for thicker targets we follow the partially coherent dynamics of the open quantum system in interaction with the solid as a function of interaction time. The calculated results are in close agreement with experimental data obtained at the LISE facility in GANIL. Photon intensities from excited argon ions were determined through high resolution x-ray spectroscopy in which individual fine structure components were resolved. Measurements were performed for a wide range of carbon foil thickness to study the time development of the excited state populations.

  8. Electron Capture and Electron Transport by Fast Ions Penetrating Solids: An open Quantum System Approach with Sources and Sinks

    SciTech Connect (OSTI)

    Seliger, M.

    2007-03-01

    We present a joint theoretical and experimental study of the time evolution of electronic states of highly charged hydrogenic ions formed by capture during transmission through solids as they undergo multiple collisions and radiative decay. For this transport problem we have developed an inhomogeneous nonunitary Lindblad master equation that allows for a description of open quantum systems with both sinks (electron loss) and source (capture) present. We apply this theoretical framework to study transient coherences created in electron capture by 13.6 MeV/amu Ar18+ ions transmitted through amorphous carbon foils and decoherence during subsequent interaction with the foil. In the limit of thin targets we can directly probe electron capture cross sections under single collision conditions, while for thicker targets we follow the partially coherent dynamics of the open quantum system in interaction with the solid as a function of interaction time. The calculated results are in close agreement with experimental data obtained at the LISE facility in GANIL. Photon intensities from excited argon ions were determined through high resolution x-ray spectroscopy in which individual fine structure components were resolved. Measurements were performed for a wide range of carbon foil thickness to study the time development of the excited state populations.

  9. INNOVATIVE APPROACHES TO COMPLYING WITH VERY LOW NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) PERMIT LIMITS FOR METALS

    SciTech Connect (OSTI)

    Payne, B

    2009-06-26

    The NPDES permit issued to the Savannah River Site (SRS) in 2003 contained very low metals limits for several outfalls. Copper, lead and zinc limits were as low as seven micrograms per liter (7 ug/l), 1 ug/l, and 100 ug/l, respectively. The permit contained compliance schedules that provided SRS with only three to five years to select and implement projects that would enable outfall compliance. Discharges from a few outfalls were eliminated or routed into other locations relatively inexpensively. However, some outfall problems were much more difficult to correct. SRS personnel implemented several innovative projects in order to meet compliance schedule deadlines as inexpensively as possible. These innovations included (1) connecting several outfall discharges to the site's Central Sanitary Wastewater Treatment Facility (CSWTF), (2) constructing a treatment wetlands and completing a water-effects ratio (WER) on its effluent, (3) installing a stannous chloride feed system to remove mercury in an existing air stripper, and (4) constructing a humic acid feed system to increase effluent dissolved organic carbon (DOC) content and take advantage of biotic ligand modeling to raise effluent limits.

  10. Double-Pionic Fusion of Nuclear Systems and the 'ABC' Effect: Approaching a Puzzle by Exclusive and Kinematically Complete Measurements

    SciTech Connect (OSTI)

    Bashkanov, M.; Clement, H.; Doroshkevich, E.; Khakimova, O.; Kren, F.; Meier, R.; Pricking, A.; Skorodko, T.; Wagner, G. J.; Bargholtz, C.; Geren, L.; Lindberg, K.; Tegner, P.-E.; Zartova, I.; Berlowski, M.; Stepaniak, J.; Bogoslawsky, D.; Ivanov, G.; Jiganov, E.; Morosov, B.

    2009-02-06

    The ABC effect--a puzzling low-mass enhancement in the {pi}{pi} invariant mass spectrum, first observed by Abashian, Booth, and Crowe--is well known from inclusive measurements of two-pion production in nuclear fusion reactions. Here we report on the first exclusive and kinematically complete measurements of the most basic double-pionic fusion reaction pn{yields}d{pi}{sup 0}{pi}{sup 0} at beam energies of 1.03 and 1.35 GeV. The measurements, which have been carried out at CELSIUS-WASA, reveal the ABC effect to be a ({pi}{pi}){sub I=L=0} channel phenomenon associated with both a resonancelike energy dependence in the integral cross section and the formation of a {delta}{delta} system in the intermediate state. A corresponding simple s-channel resonance ansatz provides a surprisingly good description of the data.

  11. Ideal-observer detectability in photon-counting differential phase-contrast imaging using a linear-systems approach

    SciTech Connect (OSTI)

    Fredenberg, Erik; Danielsson, Mats; Stayman, J. Webster; Siewerdsen, Jeffrey H.; Aslund, Magnus

    2012-09-15

    Purpose: To provide a cascaded-systems framework based on the noise-power spectrum (NPS), modulation transfer function (MTF), and noise-equivalent number of quanta (NEQ) for quantitative evaluation of differential phase-contrast imaging (Talbot interferometry) in relation to conventional absorption contrast under equal-dose, equal-geometry, and, to some extent, equal-photon-economy constraints. The focus is a geometry for photon-counting mammography. Methods: Phase-contrast imaging is a promising technology that may emerge as an alternative or adjunct to conventional absorption contrast. In particular, phase contrast may increase the signal-difference-to-noise ratio compared to absorption contrast because the difference in phase shift between soft-tissue structures is often substantially larger than the absorption difference. We have developed a comprehensive cascaded-systems framework to investigate Talbot interferometry, which is a technique for differential phase-contrast imaging. Analytical expressions for the MTF and NPS were derived to calculate the NEQ and a task-specific ideal-observer detectability index under assumptions of linearity and shift invariance. Talbot interferometry was compared to absorption contrast at equal dose, and using either a plane wave or a spherical wave in a conceivable mammography geometry. The impact of source size and spectrum bandwidth was included in the framework, and the trade-off with photon economy was investigated in some detail. Wave-propagation simulations were used to verify the analytical expressions and to generate example images. Results: Talbot interferometry inherently detects the differential of the phase, which led to a maximum in NEQ at high spatial frequencies, whereas the absorption-contrast NEQ decreased monotonically with frequency. Further, phase contrast detects differences in density rather than atomic number, and the optimal imaging energy was found to be a factor of 1.7 higher than for absorption

  12. Integrated High-Level Waste System Planning - Utilizing an Integrated Systems Planning Approach to Ensure End-State Definitions are Met and Executed - 13244

    SciTech Connect (OSTI)

    Ling, Lawrence T.; Chew, David P.

    2013-07-01

    The Savannah River Site (SRS) is a Department of Energy site which has produced nuclear materials for national defense, research, space, and medical programs since the 1950's. As a by-product of this activity, approximately 37 million gallons of high-level liquid waste containing approximately 292 million curies of radioactivity is stored on an interim basis in 45 underground storage tanks. Originally, 51 tanks were constructed and utilized to support the mission. Four tanks have been closed and taken out of service and two are currently undergoing the closure process. The Liquid Waste System is a highly integrated operation involving safely storing liquid waste in underground storage tanks; removing, treating, and dispositioning the low-level waste fraction in grout; vitrifying the higher activity waste at the Defense Waste Processing Facility; and storing the vitrified waste in stainless steel canisters until permanent disposition. After waste removal and processing, the storage and processing facilities are decontaminated and closed. A Liquid Waste System Plan (hereinafter referred to as the Plan) was developed to integrate and document the activities required to disposition legacy and future High-Level Waste and to remove from service radioactive liquid waste tanks and facilities. It establishes and records a planning basis for waste processing in the liquid waste system through the end of the program mission. The integrated Plan which recognizes the challenges of constrained funding provides a path forward to complete the liquid waste mission within all regulatory and legal requirements. The overarching objective of the Plan is to meet all Federal Facility Agreement and Site Treatment Plan regulatory commitments on or ahead of schedule while preserving as much life cycle acceleration as possible through incorporation of numerous cost savings initiatives, elimination of non-essential scope, and deferral of other scope not on the critical path to compliance

  13. A new approach to power quality and electricity reliability monitoring-case study illustrations of the capabilities of the I-GridTM system

    SciTech Connect (OSTI)

    Divan, Deepak; Brumsickle, William; Eto, Joseph

    2003-04-01

    This report describes a new approach for collecting information on power quality and reliability and making it available in the public domain. Making this information readily available in a form that is meaningful to electricity consumers is necessary for enabling more informed private and public decisions regarding electricity reliability. The system dramatically reduces the cost (and expertise) needed for customers to obtain information on the most significant power quality events, called voltage sags and interruptions. The system also offers widespread access to information on power quality collected from multiple sites and the potential for capturing information on the impacts of power quality problems, together enabling a wide variety of analysis and benchmarking to improve system reliability. Six case studies demonstrate selected functionality and capabilities of the system, including: Linking measured power quality events to process interruption and downtime; Demonstrating the ability to correlate events recorded by multiple monitors to narrow and confirm the causes of power quality events; and Benchmarking power quality and reliability on a firm and regional basis.

  14. Ventilation System Effectiveness and Tested Indoor Air Quality Impacts

    SciTech Connect (OSTI)

    Rudd, Armin; Bergey, Daniel

    2014-02-01

    In this project, Building America research team Building Science Corporation tested the effectiveness of ventilation systems at two unoccupied, single-family, detached lab homes at the University of Texas - Tyler. Five ventilation system tests were conducted with various whole-building ventilation systems. Multizone fan pressurization testing characterized building and zone enclosure leakage. PFT testing showed multizone air change rates and interzonal airflow. Cumulative particle counts for six particle sizes, and formaldehyde and other Top 20 VOC concentrations were measured in multiple zones. The testing showed that single-point exhaust ventilation was inferior as a whole-house ventilation strategy. This was because the source of outside air was not direct from outside, the ventilation air was not distributed, and no provision existed for air filtration. Indoor air recirculation by a central air distribution system can help improve the exhaust ventilation system by way of air mixing and filtration. In contrast, the supply and balanced ventilation systems showed that there is a significant benefit to drawing outside air from a known outside location, and filtering and distributing that air. Compared to the exhaust systems, the CFIS and ERV systems showed better ventilation air distribution and lower concentrations of particulates, formaldehyde and other VOCs. System improvement percentages were estimated based on four system factor categories: balance, distribution, outside air source, and recirculation filtration. Recommended system factors could be applied to reduce ventilation fan airflow rates relative to ASHRAE Standard 62.2 to save energy and reduce moisture control risk in humid climates. HVAC energy savings were predicted to be 8-10%, or $50-$75/year.

  15. Ventilation System Effectiveness and Tested Indoor Air Quality Impacts

    SciTech Connect (OSTI)

    Rudd, A.; Bergey, D.

    2014-02-01

    Ventilation system effectiveness testing was conducted at two unoccupied, single-family, detached lab homes at the University of Texas - Tyler. Five ventilation system tests were conducted with various whole-building ventilation systems. Multizone fan pressurization testing characterized building and zone enclosure leakage. PFT testing showed multizone air change rates and interzonal airflow. Cumulative particle counts for six particle sizes, and formaldehyde and other Top 20 VOC concentrations were measured in multiple zones. The testing showed that single-point exhaust ventilation was inferior as a whole-house ventilation strategy. It was inferior because the source of outside air was not direct from outside, the ventilation air was not distributed, and no provision existed for air filtration. Indoor air recirculation by a central air distribution system can help improve the exhaust ventilation system by way of air mixing and filtration. In contrast, the supply and balanced ventilation systems showed that there is a significant benefit to drawing outside air from a known outside location, and filtering and distributing that air. Compared to the Exhaust systems, the CFIS and ERV systems showed better ventilation air distribution and lower concentrations of particulates, formaldehyde and other VOCs. System improvement percentages were estimated based on four System Factor Categories: Balance, Distribution, Outside Air Source, and Recirculation Filtration. Recommended System Factors could be applied to reduce ventilation fan airflow rates relative to ASHRAE Standard 62.2 to save energy and reduce moisture control risk in humid climates. HVAC energy savings were predicted to be 8-10%, or $50-$75/year.

  16. Research Approach

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Research Approach Research Approach NETL's onsite research approach is based on integrating simulation tools with targeted experimental validation at real-life conditions in the lab and in the field. Simulation tools increase confidence in designs, thereby reducing the risk associated with incorporating multiple innovative technologies, realizing scale-up, and predicting the behavior and properties of real materials. The scientific underpinnings encoded into these models also ensure that

  17. Nexus EnergyHomes, Frederick, Maryland (Fact Sheet), Building America Case Study: Whole-House Solutions for New Homes, Building Technologies Office (BTO)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Nexus EnergyHomes Frederick, Maryland PROJECT INFORMATION Construction: New home Type: Duplex, affordable Builder: Nexus EnergyHomes www.nexusenergyhomes.com Size: 1,830 ft 2 above grade; 2,550 ft 2 conditioned area Price Range: High $200,000s Date completed: June 2011 Climate Zone: Mixed-humid PERFORMANCE DATA HERS index: * With renewables = 28 * Without renewables = 51 Projected annual energy cost savings: * 36% (62% with photovoltaics) * $810 ($1,441 with photovoltaics) Incremental cost of

  18. Building America Case Study: New Town Builders' Power of Zero Energy Center, Denver, Colorado (Brochure), Whole-House Solutions for New Homes, Energy Efficiency & Renewable Energy (EERE)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    New Town Builders' Power of Zero Energy Center Denver, Colorado GENERAL INFORMATION Builder: New Town Builders of Denver, Colorado; newtownbuilders.com Established: 1992 Construction: New home Type: Single-family, zero energy SELLING TO EMOTIONS... New Town Builders is capturing homebuyers' emotions to sell its homes and to effectively demonstrate their value. A few examples of New Town's strategies follow: * Use a person who resembles the customer's ideal to advertise the product. * Emphasize

  19. Building America Whole-House Solutions for New Homes: Challenges of Achieving 2012 IECC Air Sealing Requirements in Multifamily Dwellings, Upstate New York

    Broader source: Energy.gov [DOE]

    In this project, the Consortium for Advanced Residential Buildings team sought to create a well-documented design and implementation strategy for air sealing in low-rise multifamily buildings that would assist in compliance with new building infiltration requirements of the 2012 IECC.

  20. Passive Room-to-Room Air Transfer, Fresno, California (Fact Sheet), Building America Case Study: Whole-House Solutions for Existing Homes, Building Technologies Office (BTO)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Passive Room-to-Room Air Transfer Fresno, California PROJECT INFORMATION Construction: Retrofit Type: Single-family Builder: GreenEarthEquities (retrofit); http://greenearthequities.com/ Size: 1,621 ft 2 Price range: About $140,000 Date completed: 2011 Climate zone: Mixed-dry PERFORMANCE DATA HERS index: Not available Builder standard practice: Not available Case study house: 1,621 ft 2 With renewables: Not applicable Without renewables: 50.1% Projected annual energy cost savings: Not available

  1. Building America Whole-House Solutions for New Homes: EcoVillage: A Net Zero Energy Ready Community, Ithaca, New York

    Office of Energy Efficiency and Renewable Energy (EERE)

    Consortium for Advanced Residential Buildings is working with the EcoVillage co-housing community in Ithaca, New York, on their third neighborhood called the Third Residential EcoVillage Experience (TREE). This community-scale project consists of 40 housing units-15 apartments and 25 single family residences. The community is pursing DOE Zero Energy Ready Home (ZERH), US Green Building Council Leadership in Energy and Environmental Design (LEED) Gold, and ENERGY STAR certifications for the entire project.

  2. Building America Case Study: Northwest Energy Efficient Manufactured Housing Program High-Performance Test Homes; Whole-House Solutions for New Homes, Energy Efficiency & Renewable Energy (EERE)

    SciTech Connect (OSTI)

    2015-05-01

    ?This project represents the third phase of a multi-year effort to develop and bring to market a High Performance Manufactured Home (HPMH). The scope of this project involved building four HPMH prototypes, resulting in what is expected to be a 30% savings relative to the Building America Benchmark. (The actual % savings varies depending on choice of heating equipment and climate zone). The HPMH home is intended to make significant progress toward performing as zero-net-energy ready. Previous phases of this project created a HPMH specification and prototyped individual measures from the package to obtain engineering approvals and develop preliminary factory construction processes. This report describes the project team's work during 2014 to build prototype homes to the HPMH specifications and to monitor the homes for energy performance and durability during 2014. Monitoring is expected to continue into 2016.
    home is intended to make significant progress toward performing as zero-net-energy ready. Previous phases of this project created a HPMH specification and prototyped individual measures from the package to obtain engineering approvals and develop preliminary factory construction processes. This report describes the project team's work during 2014 to build prototype homes to the HPMH specifications and to monitor the homes for energy performance and durability during 2014. Monitoring is expected to continue into 2016.

  3. Transformations, Inc. Net Zero Energy Communities, Devens, Easthampton, Townsend, Massachusetts (Fact Sheet), Building America Case Study: Whole-House Solutions for New Homes, Building Technologies Office (BTO)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Transformations, Inc. Net Zero Energy Communities Devens, Easthampton, Townsend, Massachusetts PROJECT INFORMATION Construction: New home Type: Single-family, market-rate and affordable Builder: Transformations, Inc. www.transformations-inc.com Size: 1,064 to 2,365 ft 2 Price Range: $125,000-$400,000 Date Completed: 2010-ongoing Climate Zone: Cold PERFORMANCE DATA HERS Index Range: -21 to 43 Projected annual energy cost: $88* Incremental cost of energy efficiency measures: $3/ft 2 * Incremental

  4. Cascade Apartments - Deep Energy Multifamily Retrofit , Kent, Washington (Fact Sheet), Building America Case Study: Whole-House Solutions for New Homes, Building Technologies Office (BTO)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Cascade Apartments - Deep Energy Multifamily Retrofit Kent, Washington PROJECT INFORMATION Construction: Retrofit Type: Multifamily, affordable Builder: King County Housing Authority, Kent, Washington http://www.kcha.org/ Size: 108 units in 27 four-plexes Rent: 30% of household income Date completed: 2010 Climate Zone: Marine PERFORMANCE DATA State low-income weatherization investment: $385,850 for all 108 units $15,850 per 4-plex $3,858 per unit Site savings per unit: Billing analysis:

  5. New Whole-House Solutions Case Study: Challenges of Achieving 2012 IECC Air Sealing Requirements in Multifamily Dwellings, Upstate New York

    SciTech Connect (OSTI)

    2014-11-01

    While previous versions of the International Energy Conservation Code (IECC) have included provisions to improve the air tightness of dwellings, for the first time, the 2012 IECC mandates compliance verification through blower door testing. Simply completing the Air Barrier and Insulation Installation checklist through visual inspection is no longer sufficient; the 2012 IECC mandates a significantly stricter air sealing requirement. In Climate Zones 3 through 8, air leakage may not exceed 3 ACH50, which is a significant reduction from the 2009 IECC requirement of 7 ACH50. This requirement is for all residential buildings, which includes low-rise multifamily dwellings. While this air leakage rate requirement is an important component to achieving an efficient building thermal envelope, currently, the code language doesn't explicitly address differences between single family and multifamily applications. In addition, the 2012 IECC does not provide an option to sample dwellings for larger multifamily buildings, so compliance would have to be verified on every unit. With compliance with the 2012 IECC air leakage requirements on the horizon, several of Building America team Consortium for Advanced Residential Building's (CARB) multifamily builder partners are evaluating how best to comply with this requirement. Builders are not sure whether it is more practical or beneficial to simply pay for guarded testing or to revise their air sealing strategies to improve compartmentalization to comply with code requirements based on unguarded blower door testing. This report summarizes CARB's research that was conducted to assess the feasibility of meeting the 2012 IECC air leakage requirements in three multifamily buildings.

  6. Inverted Attic Bulkhead for HVAC Ductwork, Roseville, California (Fact Sheet), Building America Case Study: Whole-House Solutions for Existing Homes, Building Technologies Office (BTO)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Inverted Attic Bulkhead for HVAC Ductwork Roseville, California PROJECT INFORMATION Project Name: Long-Term Monitoring of Occupied Test House Location: Roseville, CA Partners: K. Hovnanian® Homes®, www.khov.com IBACOS www.ibacos.com Building Component: Envelope, structural, HVAC ducts Construction: New Application: New; single and/or multifamily Year Tested: 2012 Applicable Climate Zone(s): Hot-dry climate PERFORMANCE DATA HERS Index: 52 Projected Energy Savings: 11 million Btu/year heating

  7. Islip Housing Authority Energy Efficiency Turnover Protocols, Islip, New York (Fact Sheet), Building America Case Study: Whole-House Solutions for Existing Homes, Building Technologies Office (BTO)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Islip Housing Authority Energy Efficiency Turnover Protocols Islip, New York PROJECT INFORMATION Project Name: Islip Housing Authority Unit Turnover Retrofit Program Location: Islip, NY Partners: Islip Housing Authority, http://www.rhaonline.com/ Advanced Residential Integrated Solutions Collaborative (ARIES), http://levypartnership.com/ Building Component: Whole building Application: Retrofit; single and multifamily Year Tested: 2013 Applicable Climate Zone(s): All PERFORMANCE DATA Cost of

  8. Hood River Passive House, Hood River, Oregon (Fact Sheet), Building America Case Study: Whole-House Solutions for New Homes, Building Technologies Office (BTO)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Hood River Passive House Hood River, Oregon PROJECT INFORMATION Construction: New Home Type: Single-family, custom Builder: Root Design Build of Hood River, Oregon www.rootdesignbuild.com/ Size: 2,004 ft 2 Price Range: $320,000 Date completed: August 2012 Climate Zone: 5-Dry PERFORMANCE DATA HERS index: 40 Projected annual energy use reduction of 62% below benchmark saving: $943/year Billing data based on 9 months shows a 69% reduction in energy use, resulting in annual savings of $1,140

  9. Building America Whole-House Solutions for Existing Homes: Applying Best Practices to Florida Local Government Retrofit Programs- Central Florida (Fact Sheet)

    Broader source: Energy.gov [DOE]

    In this project, researchers from Building America Partnership for Improved Residential Construction worked with the City of Melbourne, Florida, to develop and implement best practices for renovating distressed homes to achieve annual energy savings of 15%-30% and higher

  10. Optimal design and control strategies for novel combined heat and power (CHP) fuel cell systems. Part I of II, datum design conditions and approach.

    SciTech Connect (OSTI)

    Colella, Whitney G.

    2010-06-01

    Energy network optimization (ENO) models identify new strategies for designing, installing, and controlling stationary combined heat and power (CHP) fuel cell systems (FCSs) with the goals of (1) minimizing electricity and heating costs for building owners and (2) reducing emissions of the primary greenhouse gas (GHG) - carbon dioxide (CO{sub 2}). A goal of this work is to employ relatively inexpensive simulation studies to discover more financially and environmentally effective approaches for installing CHP FCSs. ENO models quantify the impact of different choices made by power generation operators, FCS manufacturers, building owners, and governments with respect to two primary goals - energy cost savings for building owners and CO{sub 2} emission reductions. These types of models are crucial for identifying cost and CO{sub 2} optima for particular installations. Optimal strategies change with varying economic and environmental conditions, FCS performance, the characteristics of building demand for electricity and heat, and many other factors. ENO models evaluate both 'business-as-usual' and novel FCS operating strategies. For the scenarios examined here, relative to a base case of no FCSs installed, model results indicate that novel strategies could reduce building energy costs by 25% and CO{sub 2} emissions by 80%. Part I of II articles discusses model assumptions and methodology. Part II of II articles illustrates model results for a university campus town and generalizes these results for diverse communities.

  11. A New Approach in Urea Dosing to Improve Performance and Durability of SCR Systems for the Use in Off-Road Applications to Fulfill Tier 4 Final

    Broader source: Energy.gov [DOE]

    Evaluation of influence of spray quality on urea decomposition and catalyst performance leads to new approach in dosing, using special nozzle and air-supply strategy

  12. Home Cooling | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Cooling Home Cooling Energy Saver 101 Energy Saver 101 We're covering everything you need to know about home cooling to help you save energy and money. Read more Ventilation Systems for Cooling Ventilation Systems for Cooling Learn how to avoid heat buildup and keep your home cool with ventilation. Read more Cooling with a Whole House Fan Cooling with a Whole House Fan A whole-house fan, in combination with other cooling systems, can meet all or most of your home cooling needs year round. Read

  13. Maximizing Residential Energy Savings: Net Zero Energy House (ZEH) Technology Pathways

    SciTech Connect (OSTI)

    Anderson, R.; Roberts, D.

    2008-11-01

    To meet current U.S. Department of Energy zero-energy home performance goals, new technologies and solutions must increase whole-house efficiency savings by an additional 40% relative to those provided by best available components and systems.

  14. Optimization of the engineering design for the Lansing District Cooling System by comparative analysis of the impact of advanced technologies on a conventional design approach. Volume 1

    SciTech Connect (OSTI)

    Not Available

    1994-02-01

    The Lansing Board of Water and Light (LBWL) began investigating development of a cooling district in the Lansing Downtown in 1989 in order to retain and build summer load for its steam utility. A feasibility study was conducted in conjunction with SFT, Inc. and ZBA, Inc. which addressed many factors such as marketability of the product, impact on the summer steam load, distribution system development, system design, probable capital and operating costs, reliability and environmental and other regulatory impacts on a preliminary feasibility basis. The Phase I study completed in September of 1989 provided highly promising results for establishing a District Cooling System (DCS). An existing chilled water production facility owned by the State of Michigan was identified as a potential location for a DCS plant. With these changes a review of the feasibility with a new set of alternatives and sensitivities was evaluated. This enhancement to the Phase I Study was nearing completion when the LBWL in conjunction with Energy, Mines and Resources Canada proposed to conduct the Phase II project in conjunction with DOE. The project was structured to proceed along a dual track to demonstrate the impact of the application of various innovative technologies.

  15. Multilayer insulation for the interconnect region in the Accelerator System String Test: A practical engineering approach for a new scheme of design and installation bridges

    SciTech Connect (OSTI)

    Baritchi, D.; Jalloh, A.

    1993-04-01

    In order to minimize the heat leak in the Accelerator System String Test (ASST) inter-connect region, shield bridges and multilayer insulation (MLI) are provided. A sliding joint between shield bridges on adjacent magnets accommodates the contraction that occurs during cooldown. In the original design of the MLI bridges, thermal contraction was provided for by compressing the MLI. During assembly of the interconnect region, it was realized that there was not enough room for the required compression. This resulted in a redesign of the MLI bridges. The new scheme involves splitting and overlapping the MLI. This scheme has worked very well in subsequent assembly of the interconnect region. In this paper, we are going to present the new design scheme. We will also compare this design with the original design and present its advantages.

  16. Consent-Based Approach | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Siting » Consent-Based Approach Consent-Based Approach Consent-Based Approach Next Steps in Developing a Consent-Based Approach to Siting Near-term steps for the consent-based siting initiative As the Department moves forward with planning for an integrated waste management system, we are committed to a consent-based approach to siting. A consent-based approach is built on collaboration-with the public, with stakeholders, and with governments at the local, state, and tribal levels. Looking

  17. Integrated Geologic and Geophysical Approach for Establishing Geothermal Play Fairways and Discovering Blind Geothermal Systems in the Great Basin Region, Western USA: A Progress Report

    SciTech Connect (OSTI)

    Faulds, James E.; Hinz, Nicholas H.; Coolbaugh, Mark F.; Shevenell, Lisa A.; Siler, Drew L.; dePolo, Craig M.; Hammond, William C.; Kreemer, Corne; Oppliger, G.; Wannamaker, P.; Queen, John H.; Visser, Charles

    2015-09-02

    We have undertaken an integrated geologic, geochemical, and geophysical study of a broad 240-km-wide, 400-km-long transect stretching from west-central to eastern Nevada in the Great Basin region of the western USA. The main goal of this study is to produce a comprehensive geothermal potential map that incorporates up to 11 parameters and identifies geothermal play fairways that represent potential blind or hidden geothermal systems. Our new geothermal potential map incorporates: 1) heat flow; 2) geochemistry from springs and wells; 3) structural setting; 4) recency of faulting; 5) slip rates on Quaternary faults; 6) regional strain rate; 7) slip and dilation tendency on Quaternary faults; 8) seismologic data; 9) gravity data; 10) magnetotelluric data (where available); and 11) seismic reflection data (primarily from the Carson Sink and Steptoe basins). The transect is respectively anchored on its western and eastern ends by regional 3D modeling of the Carson Sink and Steptoe basins, which will provide more detailed geothermal potential maps of these two promising areas. To date, geological, geochemical, and geophysical data sets have been assembled into an ArcGIS platform and combined into a preliminary predictive geothermal play fairway model using various statistical techniques. The fairway model consists of the following components, each of which are represented in grid-cell format in ArcGIS and combined using specified weights and mathematical operators: 1) structural component of permeability; 2) regional-scale component of permeability; 3) combined permeability, and 4) heat source model. The preliminary model demonstrates that the multiple data sets can be successfully combined into a comprehensive favorability map. An initial evaluation using known geothermal systems as benchmarks to test interpretations indicates that the preliminary modeling has done a good job assigning relative ranks of geothermal potential. However, a major challenge is defining

  18. A Systems Approach to Identifying Exploration and Development Opportunities in the Illinois Basin: Digital Portifolio of Plays in Underexplored Lower Paleozoic Rocks

    SciTech Connect (OSTI)

    Beverly Seyler; David Harris; Brian Keith; Bryan Huff; Yaghoob Lasemi

    2008-06-30

    This study examined petroleum occurrence in Ordovician, Silurian and Devonian reservoirs in the Illinois Basin. Results from this project show that there is excellent potential for additional discovery of petroleum reservoirs in these formations. Numerous exploration targets and exploration strategies were identified that can be used to increase production from these underexplored strata. Some of the challenges to exploration of deeper strata include the lack of subsurface data, lack of understanding of regional facies changes, lack of understanding the role of diagenetic alteration in developing reservoir porosity and permeability, the shifting of structural closures with depth, overlooking potential producing horizons, and under utilization of 3D seismic techniques. This study has shown many areas are prospective for additional discoveries in lower Paleozoic strata in the Illinois Basin. This project implemented a systematic basin analysis approach that is expected to encourage exploration for petroleum in lower Paleozoic rocks of the Illinois Basin. The study has compiled and presented a broad base of information and knowledge needed by independent oil companies to pursue the development of exploration prospects in overlooked, deeper play horizons in the Illinois Basin. Available geologic data relevant for the exploration and development of petroleum reservoirs in the Illinois Basin was analyzed and assimilated into a coherent, easily accessible digital play portfolio. The primary focus of this project was on case studies of existing reservoirs in Devonian, Silurian, and Ordovician strata and the application of knowledge gained to future exploration and development in these underexplored strata of the Illinois Basin. In addition, a review of published reports and exploration in the New Albany Shale Group, a Devonian black shale source rock, in Illinois was completed due to the recent increased interest in Devonian black shales across the United States. The New

  19. Integrated Approach to Use Natural Chemical and Isotopic Tracers...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Fracture Spacing and Surface Area in EGS Systems Integrated Approach to Use Natural Chemical and Isotopic Tracers to Estimate Fracture Spacing and Surface Area in EGS Systems DOE ...

  20. Sustaining the National Geothermal Data System: Considerations for a System Wide Approach and Node Maintenance, Geothermal Resources Council 37th Annual Meeting, Las Vegas, Nevada, September 29-October 2, 2013

    SciTech Connect (OSTI)

    Allison, Lee; Chickering, Cathy; Anderson, Arlene; Richard, Stephen M.

    2013-09-23

    Since the 2009 American Recovery and Reinvestment Act the U.S. Department of Energy’s Geothermal Technologies Office has funded $33.7 million for multiple data digitization and aggregation projects focused on making vast amounts of geothermal relevant data available to industry for advancing geothermal exploration. These projects are collectively part of the National Geothermal Data System (NGDS), a distributed, networked system for maintaining, sharing, and accessing data in an effort to lower the levelized cost of electricity (LCOE). Determining “who owns” and “who maintains” the NGDS and its data nodes (repositories in the distributed system) is yet to be determined. However, the invest- ment in building and populating the NGDS has been substantial, both in terms of dollars and time; it is critical that this investment be protected by ensuring sustainability of the data, the software and systems, and the accessibility of the data. Only then, will the benefits be fully realized. To keep this operational system sustainable will require four core elements: continued serving of data and applications; maintenance of system operations; a governance structure; and an effective business model. Each of these presents a number of challenges. Data being added to the NGDS are not strictly geothermal but data considered relevant to geothermal exploration and develop- ment, including vast amounts of oil and gas and groundwater wells, among other data. These are relevant to a broader base of users. By diversifying the client base to other users and other fields, the cost of maintaining core infrastructure can be spread across an array of stakeholders and clients. It is presumed that NGDS will continue to provide free and open access to its data resources. The next-phase NGDS operation should be structured to eventually pursue revenue streams to help off-set sustainability expenses as necessary and appropriate, potentially including income from: grants and contracts