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Sample records for roof r-value attic

  1. Next Generation Attics and Roof Systems | Department of Energy

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

    Attics and Roof Systems Next Generation Attics and Roof Systems Emerging Technologies Project for the 2013 Building Technologies Office's Program Peer Review PDF icon emrgtech26_miller_040413.pdf More Documents & Publications New Cool Roof Coatings and Affordable Cool Color Asphalt Accelerated Aging of Roofing Materials - 2013 BTO Peer Review This graphic depicts all the modes of heat transfer that AtticSim evaluates. Modeling the Energy Efficiency of Residential Attic Assemblies

  2. Attic or Roof? An Evaluation of Two Advanced Weatherization Packages

    SciTech Connect (OSTI)

    Neuhauser, Ken

    2012-06-01

    This project examines implementation of advanced retrofit measures in the context of a large-scale weatherization program and the archetypal Chicago brick bungalow. One strategy applies best practice air sealing methods and a standard insulation method to the attic floor. The other strategy creates an unvented roof assembly using materials and methods typically available to weatherization contractors. Through implementations of the retrofit strategies in a total of eight (8) test homes, the research found that the two different strategies achieve similar reductions in air leakage measurement (55%) and predicted energy performance (18%) relative to the pre-retrofit conditions.

  3. Indoor climate and moisture durability performances of houses with unvented attic roof constructions in a mixed-humid climate.

    SciTech Connect (OSTI)

    Pallin, Simon B.; Boudreaux, Philip R.; Jackson, Roderick K.

    2014-10-01

    A sealed or unvented attic is an energy-efficient envelope component that can reduce the amount of energy a house consumes for space conditioning if the air handler and/or ducts are located in the attic. The attic is typically sealed by using spray foam on the underside of the roof deck and covering the soffit, ridge and gable vents to minimize air leakage from the attic to the outside. This approach can save up to 10% in space-conditioning energy when ducts are located in the attic (DOE 2013). Past research done by ORNL and Florida Solar Energy Center suggests that in more hot, humid climates, an unvented attic could potentially create a more humid, uncomfortable living environment than a vented attic (Colon 2011, Boudreaux, Pallin et al. 2013). Research showed that controlling the higher indoor humidity could reduce the energy savings from the sealed, unvented attic, which in turn would decrease the energy savings payback. Research also showed that the roof assembly (5.5 inches of open-cell foam, 1inch of closed-cell foam, OSB, felt paper, and asphalt shingles) stored moisture, thus acting as a moisture buffer. During the fall and winter, the roof assembly stored moisture and during the spring and summer it released moisture. This phenomenon is not seen in a vented attic, in which the air exchange rate to the outside is greater and, in the winter, helps to dehumidify the attic air. It was also seen that in a vented attic, the direction of water vapor diffusion is on average from the attic to the interior of the house. Air leakage from the attic to the interior also occurs during more of the year in a house with an unvented attic than in one with a vented attic. These discoveries show that the moisture dynamics in a house with an unvented attic are much different from those in a house with a vented attic. This study reports on a series of computer model investigations completed to determine the key variables impacting indoor comfort and the durability of roof assemblies against moisture. The key variables investigated were the leakage area from the attic to the outside, leakage area from the attic to the interior, leakage area from the interior to the outside, supply duct leakage in the attic, and interior moisture generation. These investigations are described in this report.

  4. Internal Roof and Attic Thermal Radiation Control Retrofit Strategies for Cooling-Dominated Climates

    SciTech Connect (OSTI)

    Fallahi, A.; Duraschlag, H.; Elliott, D.; Hartsough, J.; Shukla, N.; Kosny, J.

    2013-12-01

    This project evaluates the cooling energy savings and cost effectiveness of radiation control retrofit strategies for residential attics in U.S. cooling-dominated climates. Usually, in residential applications, radiation control retrofit strategies are applied below the roof deck or on top of the attic floor insulation. They offer an alternative option to the addition of conventional bulk insulation such as fiberglass or cellulose insulation. Radiation control is a potentially low-cost energy efficiency retrofit strategy that does not require significant changes to existing homes. In this project, two groups of low-cost radiation control strategies were evaluated for southern U.S. applications. One uses a radiant barrier composed of two aluminum foils combined with an enclosed reflective air space and the second uses spray-applied interior radiation control coatings (IRCC).

  5. The Equivalent Thermal Resistance of Tile Roofs with and without Batten Systems

    SciTech Connect (OSTI)

    Miller, William A

    2013-01-01

    Clay and concrete tile roofs were installed on a fully instrumented attic test facility operating in East Tennessee s climate. Roof, attic and deck temperatures and heat flows were recorded for each of the tile roofs and also on an adjacent attic cavity covered with a conventionally pigmented and direct-nailed asphalt shingle roof. The data were used to benchmark a computer tool for simulation of roofs and attics and the tool used to develop an approach for computing an equivalent seasonal R-value for sub-tile venting. The approach computed equal heat fluxes through the ceilings of roofs having different combinations of surface radiation properties and or building constructions. A direct nailed shingle roof served as a control for estimating the equivalent thermal resistance of the air space. Simulations were benchmarked to data in the ASHRAE Fundamentals for the thermal resistance of inclined and closed air spaces.

  6. Cost-Optimized Attic Insulation Solution for Factory-Built Homes...

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

    attic insulation R-value than is typically installed in manufactured homes. The simplicity of this dense-pack solution to increasing attic insulation R-value promises real hope ...

  7. Cost-Optimized Attic Insulation Solution for Factory-Built Homes- Building America Top Innovation

    Broader source: Energy.gov [DOE]

    This 2014 Top Innovation describes a dense-pack solution to increasing attic insulation R-value for manufactured homes.

  8. Issues related to venting of attics and cathedral ceilings

    SciTech Connect (OSTI)

    TenWolde, A.; Rose, W.B.

    1999-07-01

    Current model building codes require attic ventilation in all US climates. Originally, these requirements were strictly based on concerns for condensation in attics during winter in cold climates, and they were based on limited technical information. Nevertheless, attic ventilation has become the uncontested strategy to minimize condensation and ice dams during winter and extreme attic temperatures during summer. However, other strategies exist that address each of these problems as well as or better than attic ventilation. This paper examines issues such as summer attic temperatures, ice dams, and shingle durability and discusses the relative merits of attic ventilation compared to alternative design approaches in various climates. The authors support current recommendations for attic ventilation in cold and mixed climates but recommend that attic ventilation be treated as a design option in warm, humid climates. The authors review the new information on attic and roof ventilation in the 1997 ASHRAE Handbook--Fundamentals and discuss the reasons for the changes.

  9. Building America Top Innovations 2012: Unvented, Conditioned Attics

    SciTech Connect (OSTI)

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America research showing an unvented attic insulated along the roof line provides better energy performance than a vented attic when HVAC ducts are located in the attic and there are numerous penetrations through the ceiling deck.

  10. Moisture performance of sealed attics in the mixed-humid climate

    SciTech Connect (OSTI)

    Boudreaux, Philip R; Pallin, Simon B; Jackson, Roderick K

    2013-12-01

    Oak Ridge National Laboratory studied 8 homes in the mixed-humid climate, 4 with vented attics and 4 with sealed attics. ORNL wanted to understand the moisture performance of the sealed attic and how it affected the interior environment. We found that the attic and interior of sealed attic homes were more humid than the attic and interior observed in vented attic homes. This is due to the lack of ventilation in the sealed attic. Historically attics have been vented to dehumidify the attic and interior of the home. A sealed attic design greatly reduces the venting potential and thus this drying pathway and can cause elevated interior moisture over a vented attic home. Despite the elevated attic and interior moisture in the sealed attic homes, so far no mold or material degradation has been found. The roof sheathing moisture content has stayed below 20%, indicating low potential for material degradation. Also the relative humidity at the roof sheathing has stayed within the ASHRAE 160 design criteria except for a short time during the 2011/2012 winter. This was due to a combination of the sealed attic design (minimal venting to the outside) and the duct work not being operated in the attic which usually provides a dehumidification pathway. It was also found that when the humidity was controlled using the HVAC system, it resulted in 7% more cooling energy consumption. In the mixed-humid climate this reduces the cost effectiveness of the sealed attic design as a solution for bringing ducts into a semi-conditioned space. Because of this we are recommending the other alternatives be used to bringing ducts into the conditioned space in both new construction and retrofit work in the mixed-humid climate.

  11. Unvented, Conditioned Attics - Building America Top Innovation...

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

    Attics - Building America Top Innovation Unvented, Conditioned Attics - Building America Top Innovation This photo shows an attic that is conditioned (insulated) and showing ...

  12. Next Generation Attics and Roof Systems

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

    Som Shrestha Kaushik Biswas, Ken Childs, Jerald Atchley, Phil Childs Andre Desjarlais (Group Leader) 32% Primary Energy 28% Primary Energy 2 | Building Technologies Office ...

  13. Roof Savings Calculator Suite

    Energy Science and Technology Software Center (OSTI)

    2013-11-22

    The software options currently supported by the simulation engine can be seen/experienced at www.roofcalc.com. It defaults all values to national averages with options to test a base-case (residential or commercial) building versus a comparison building with inputs for building type, location, building vintage, conditioned area, number of floors, and window-to-wall ratio, cooling system efficiency, type of heating, heating system efficiency, duct location, roof/ceiling insulation level, above-sheathing ventilation, radiant barrier, roof thermal mass, roof solar reflectance,more » roof thermal emittance, utility costs, roof pitch. The Roof Savings Caculator Suite adds utilities and website/web service and the integration of AtticSim with DOE-2.1E, with the end-result being Roof Savings Calculator.« less

  14. Roof Savings Calculator Suite

    SciTech Connect (OSTI)

    New, Joshua R; Garrett, Aaron; Erdem, Ender; Huang, Yu

    2013-11-22

    The software options currently supported by the simulation engine can be seen/experienced at www.roofcalc.com. It defaults all values to national averages with options to test a base-case (residential or commercial) building versus a comparison building with inputs for building type, location, building vintage, conditioned area, number of floors, and window-to-wall ratio, cooling system efficiency, type of heating, heating system efficiency, duct location, roof/ceiling insulation level, above-sheathing ventilation, radiant barrier, roof thermal mass, roof solar reflectance, roof thermal emittance, utility costs, roof pitch. The Roof Savings Caculator Suite adds utilities and website/web service and the integration of AtticSim with DOE-2.1E, with the end-result being Roof Savings Calculator.

  15. Building America Top Innovations 2014 Profile: Cost-Optimized Attic Insulation Solution for Factory-Built Homes

    SciTech Connect (OSTI)

    none,

    2014-11-01

    This 2014 Top Innovation profile describes a low-cost, low-tech attic insulation technique developed by the ARIES Building America team with help from Southern Energy Homes and Johns Manville. Increasing attic insulation in manufactured housing has been a significant challenge due to cost, production and transportation constraints. The simplicity of this dense-pack solution to increasing attic insulation R-value promises real hope for widespread industry adoption.

  16. A Hygrothermal Risk Analysis Applied to Residential Unvented Attics

    SciTech Connect (OSTI)

    Pallin, Simon B; Kehrer, Manfred

    2013-01-01

    Aresidential building, constructed with an unvented attic, is acommonroof assembly in the United States.The expected hygrothermal performance and service life of the roof are difficult to estimate due to a number of varying parameters.Typical parameters expected to vary are the climate, direction, and slope of the roof as well as the radiation properties of the surface material. Furthermore, influential parameters are indoor moisture excess, air leakages through the attic floor, and leakages from air-handling unit and ventilation ducts. In addition, the type of building materials such as the insulation material and closed or open cell spray polyurethane foam will influence the future performance of the roof. A development of a simulation model of the roof assembly will enable a risk and sensitivity analysis, in which the most important varying parameters on the hygrothermal performance can be determined. The model is designed to perform probabilistic simulations using mathematical and hygrothermal calculation tools. The varying input parameters can be chosen from existing measurements, simulations, or standards. An analysis is applied to determine the risk of consequences, such as mold growth, rot, or energy demand of the HVAC unit. Furthermore, the future performance of the roof can be simulated in different climates to facilitate the design of an efficient and reliable roof construction with the most suitable technical solution and to determine the most appropriate building materials for a given climate

  17. Interaction of Unvented Attics With Living Space in Three Northeast Homes

    SciTech Connect (OSTI)

    Puttagunta, S.; Faakye, O.

    2015-02-01

    Unvented roof assemblies are becoming common in North American construction. It is estimated that over 100,000 have been constructed since 1995 (Schumacher 2007). According to RECS 2011, more than 30% of homes with attics can be found in the very cold/cold climate areas, which equals about 10.4 million housing units. The magnitude of these numbers emphases the significance of properly understanding how the attic conditions vary with respect to the conditioned space below.

  18. Thermal Performance Evaluation of Attic Radiant Barrier Systems Using the Large Scale Climate Simulator (LSCS)

    SciTech Connect (OSTI)

    Shrestha, Som S; Miller, William A; Desjarlais, Andre Omer

    2013-01-01

    Application of radiant barriers and low-emittance surface coatings in residential building attics can significantly reduce conditioning loads from heat flow through attic floors. The roofing industry has been developing and using various radiant barrier systems and low-emittance surface coatings to increase energy efficiency in buildings; however, minimal data are available that quantifies the effectiveness of these technologies. This study evaluates performance of various attic radiant barrier systems under simulated summer daytime conditions and nighttime or low solar gain daytime winter conditions using the large scale climate simulator (LSCS). The four attic configurations that were evaluated are 1) no radiant barrier (control), 2) perforated low-e foil laminated oriented strand board (OSB) deck, 3) low-e foil stapled on rafters, and 4) liquid applied low-emittance coating on roof deck and rafters. All test attics used nominal RUS 13 h-ft2- F/Btu (RSI 2.29 m2-K/W) fiberglass batt insulation on attic floor. Results indicate that the three systems with radiant barriers had heat flows through the attic floor during summer daytime condition that were 33%, 50%, and 19% lower than the control, respectively.

  19. Field Evaluation of Four Novel Roof Designs for Energy-Efficient Manufactured Homes

    SciTech Connect (OSTI)

    Levy, E.; Dentz, J.; Ansanelli, E.; Barker, G.; Rath, P.; Dadia, D.

    2015-12-01

    A five-bay roof test structure was built, instrumented and monitored in an effort to determine through field testing and analysis the relative contributions of select technologies toward reducing energy use in new manufactured homes. The roof structure in Jamestown, California was designed to examine how differences in roof construction impact space conditioning loads, wood moisture content and attic humidity levels. Conclusions are drawn from the data on the relative energy and moisture performance of various configurations of vented and sealed attics.

  20. Moisture Risk in Unvented Attics Due to Air Leakage Paths

    SciTech Connect (OSTI)

    Prahl, D.; Shaffer, M.

    2014-11-01

    IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Warme und Feuchte instationar Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.

  1. Moisture Risk in Unvented Attics Due to Air Leakage Paths

    SciTech Connect (OSTI)

    Prahl, D.; Shaffer, M.

    2014-11-01

    IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Wrme und Feuchte instationr Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.

  2. Performance Assessment of Photovoltaic Attic Ventilator Fans

    Broader source: Energy.gov [DOE]

    A case study of photovoltaic attic ventilator fans was conducted on an occupied single family home in Central Florida. Two fans were installed at mid-summer in an instrumented home where attic air temperature, meteorological conditions and space cooling electric power were measured. The home already had an attic radiant barrier, but still experienced attic air temperatures in excess of 130oF.

  3. Advanced Energy Efficient Roof System

    SciTech Connect (OSTI)

    Jane Davidson

    2008-09-30

    Energy consumption in buildings represents 40 percent of primary U.S. energy consumption, split almost equally between residential (22%) and commercial (18%) buildings.1 Space heating (31%) and cooling (12%) account for approximately 9 quadrillion Btu. Improvements in the building envelope can have a significant impact on reducing energy consumption. Thermal losses (or gains) from the roof make up 14 percent of the building component energy load. Infiltration through the building envelope, including the roof, accounts for an additional 28 percent of the heating loads and 16 percent of the cooling loads. These figures provide a strong incentive to develop and implement more energy efficient roof systems. The roof is perhaps the most challenging component of the building envelope to change for many reasons. The engineered roof truss, which has been around since 1956, is relatively low cost and is the industry standard. The roof has multiple functions. A typical wood frame home lasts a long time. Building codes vary across the country. Customer and trade acceptance of new building products and materials may impede market penetration. The energy savings of a new roof system must be balanced with other requirements such as first and life-cycle costs, durability, appearance, and ease of construction. Conventional residential roof construction utilizes closely spaced roof trusses supporting a layer of sheathing and roofing materials. Gypsum board is typically attached to the lower chord of the trusses forming the finished ceiling for the occupied space. Often in warmer climates, the HVAC system and ducts are placed in the unconditioned and otherwise unusable attic. High temperature differentials and leaky ducts result in thermal losses. Penetrations through the ceilings are notoriously difficult to seal and lead to moisture and air infiltration. These issues all contribute to greater energy use and have led builders to consider construction of a conditioned attic. The options considered to date are not ideal. One approach is to insulate between the trusses at the roof plane. The construction process is time consuming and costs more than conventional attic construction. Moreover, the problems of air infiltration and thermal bridges across the insulation remain. Another approach is to use structurally insulated panels (SIPs), but conventional SIPs are unlikely to be the ultimate solution because an additional underlying support structure is required except for short spans. In addition, wood spline and metal locking joints can result in thermal bridges and gaps in the foam. This study undertook a more innovative approach to roof construction. The goal was to design and evaluate a modular energy efficient panelized roof system with the following attributes: (1) a conditioned and clear attic space for HVAC equipment and additional finished area in the attic; (2) manufactured panels that provide structure, insulation, and accommodate a variety of roofing materials; (3) panels that require support only at the ends; (4) optimal energy performance by minimizing thermal bridging and air infiltration; (5) minimal risk of moisture problems; (6) minimum 50-year life; (7) applicable to a range of house styles, climates and conditions; (8) easy erection in the field; (9) the option to incorporate factory-installed solar systems into the panel; and (10) lowest possible cost. A nationwide market study shows there is a defined market opportunity for such a panelized roof system with production and semi-custom builders in the United States. Senior personnel at top builders expressed interest in the performance attributes and indicate long-term opportunity exists if the system can deliver a clear value proposition. Specifically, builders are interested in (1) reducing construction cycle time (cost) and (2) offering increased energy efficiency to the homebuyer. Additional living space under the roof panels is another low-cost asset identified as part of the study. The market potential is enhanced through construction activity levels in target marke

  4. Cool Roofs

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

    Well, when some lightening strikes a roof, the roof heats up. Looking at the picture in the right hand corner you can see the difference between a cool roof and a non-cool roof. ...

  5. Comparison of Software Models for Energy Savings from Cool Roofs

    SciTech Connect (OSTI)

    New, Joshua Ryan; Miller, William A; Huang, Yu; Levinson, Ronnen

    2014-01-01

    A web-based Roof Savings Calculator (RSC) has been deployed for the United States Department of Energy as an industry-consensus tool to help building owners, manufacturers, distributors, contractors and researchers easily run complex roof and attic simulations. This tool employs modern web technologies, usability design, and national average defaults as an interface to annual simulations of hour-by-hour, whole-building performance using the world-class simulation tools DOE-2.1E and AtticSim in order to provide estimated annual energy and cost savings. In addition to cool reflective roofs, RSC simulates multiple roof and attic configurations including different roof slopes, above sheathing ventilation, radiant barriers, low-emittance roof surfaces, duct location, duct leakage rates, multiple substrate types, and insulation levels. A base case and energy-efficient alternative can be compared side-by-side to estimate monthly energy. RSC was benchmarked against field data from demonstration homes in Ft. Irwin, California; while cooling savings were similar, heating penalty varied significantly across different simulation engines. RSC results reduce cool roofing cost-effectiveness thus mitigating expected economic incentives for this countermeasure to the urban heat island effect. This paper consolidates comparison of RSC s projected energy savings to other simulation engines including DOE-2.1E, AtticSim, Micropas, and EnergyPlus, and presents preliminary analyses. RSC s algorithms for capturing radiant heat transfer and duct interaction in the attic assembly are considered major contributing factors to increased cooling savings and heating penalties. Comparison to previous simulation-based studies, analysis on the force multiplier of RSC cooling savings and heating penalties, the role of radiative heat exchange in an attic assembly, and changes made for increased accuracy of the duct model are included.

  6. Attic Air Sealing Guide - Building America Top Innovation | Department...

    Energy Savers [EERE]

    Attic Air Sealing Guide - Building America Top Innovation Attic Air Sealing Guide - Building America Top Innovation Image showing step-by-step instructions for air sealing. One of ...

  7. Sustainable Retrofit of Residential Roofs Using Metal Roofing Panels, Thin-Film Photovoltaic Laminates, and PCM Heat Sink Technology

    SciTech Connect (OSTI)

    Kosny, Jan; Miller, William A; Childs, Phillip W; Biswas, Kaushik

    2011-01-01

    During September-October 2009, research teams representing Metal Construction Association (the largest North American trade association representing metal building manufacturers, builders, and material suppliers), CertainTeed (one of the largest U.S. manufacturers of thermal insulation and building envelope materials), Unisolar (largest U.S. producer of amorphous silicone photo-voltaic (PV) laminates), Phase Change Energy (manufacturer of bio-based PCM), and Oak Ridge National Laboratory (ORNL) installed three experimental attics utilizing different roof retrofit strategies in the ORNL campus. The main goal of this project was experimental evaluation of a newly-developed sustainable re-roofing technology utilizing amorphous silicone PV laminates integrated with metal roof and PCM heat sink. The experimental attic with PV laminate was expected to work during the winter time as a passive solar collector with PCM storing solar heat, absorbed during the day, and increasing overall attic air temperature during the night.

  8. Roof Renovations

    Broader source: Energy.gov [DOE]

    The roof of a Federal building is a common placement for a number of renewable energy technologies, so they should be addressed anytime a roof renovation is undertaken, including roof-mounted...

  9. White Roofs

    ScienceCinema (OSTI)

    Chu, Steven

    2013-05-29

    Secretary Steven Chu discusses the benefits of switching to white roofs and light colored pavements.

  10. Ceilings and Attics: Install Insulation and Provide Ventilation

    SciTech Connect (OSTI)

    2000-02-01

    This document provides guidelines for installing insulation and managing ventilation through your attic.

  11. Unvented, Conditioned Attics - Building America Top Innovation | Department

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

    of Energy Attics - Building America Top Innovation Unvented, Conditioned Attics - Building America Top Innovation This photo shows an attic that is conditioned (insulated) and showing ductwork. The preference for a large segment of the U.S. housing industry has been to locate HVAC systems in unconditioned attics, but this is highly inefficient. The additional heat loss and gain of ducts in unconditioned, vented attics increases energy use for heating and cooling by 10%. Additionally, duct

  12. Field Evaluation of Four Novel Roof Designs for Energy-Efficient Manufactured Homes

    SciTech Connect (OSTI)

    Levy, E.; Dentz, J.; Ansanelli, E.; Barker, G.; Rath, P.; Dadia, D.

    2015-12-03

    "9A five-bay roof test structure was built, instrumented and monitored in an effort to determine through field testing and analysis the relative contributions of select technologies toward reducing energy use in new manufactured homes. The roof structure in Jamestown, California was designed to examine how differences in roof construction impact space conditioning loads, wood moisture content and attic humidity levels. Conclusions are drawn from the data on the relative energy and moisture performance of various configurations of vented and sealed attics.

  13. Effectiveness of thermal insulation in the attic spaces of manufactured homes

    SciTech Connect (OSTI)

    Yarbrough, D.W.; Graves, R.S.; McElroy, D.L.

    1988-01-01

    The thermal resistance of loose-fill insulations is reduced by settling that occurs after installation. The use of loose-fill insulation in manufactured homes is increasing and a need exists to evaluate the effectiveness of this application. Settling of loose- fill insulation in manufactured homes occurs during construction and over-the-road delivery. Measurements of the settling of a stabilized cellulosic insulation in four units has shown that a small amount of adhesive results in a product exhibiting 3 to 5% loss of thickness during manufacture and less than 2% additional settling during delivery. This thickness loss of about 6% is small in comparison with the unstabilized loose-fill rock wool that was observed in two units. The effectiveness of attic insulations in manufactured home units is significantly affected by the limited space available in many designs. Calculations of the thermal resistance that can be achieved in typical attics will be discussed. The results are that loose-fill materials are a better choice than batts for manufactured home attic insulation when truss design prevents complete coverage and that attic design must be improved in many cases in order to achieve specified R-values. 6 refs., 14 figs., 2 tabs.

  14. Measure Guideline: Guide to Attic Air Sealing

    SciTech Connect (OSTI)

    Lstiburek, J.

    2014-09-01

    The Guide to Attic Air Sealing was completed in 2010 and although not in the standard Measure Guideline format, is intended to be a Measure Guideline on Attic Air Sealing. The guide was reviewed during two industry stakeholders meetings held on December 18th, 2009 and January 15th, 2010, and modified based on the comments received. Please do not make comments on the Building America format of this document. The purpose of the Guide to Attic Air Sealing is to provide information and recommendations for the preparation work necessary prior to adding attic insulation. Even though the purpose of this guide is to save energy - health, safety and durability should not be compromised by energy efficiency. Accordingly, combustion safety and ventilation for indoor air quality are addressed first. Durability and attic ventilation then follow. Finally, to maximize energy savings, air sealing is completed prior to insulating. The guide is intended for home remodelers, builders, insulation contractors, mechanical contractors, general contractors who have previously done remodeling and homeowners as a guide to the work that needs to be done.

  15. Attic Air Sealing Guide - Building America Top Innovation | Department of

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

    Energy Attic Air Sealing Guide - Building America Top Innovation Attic Air Sealing Guide - Building America Top Innovation Image showing step-by-step instructions for air sealing. One of the most effective energy measures for retrofitting homes across the United States is attic air sealing. The Building America-sponsored Guide to Attic Air Sealing provides much needed instruction essential to achieving effective energy savings while avoiding pitfalls that can lead to combustion safety and

  16. Measure Guideline: Guide to Attic Air Sealing

    SciTech Connect (OSTI)

    Lstiburek, Joseph

    2014-09-01

    The purpose of this measure guideline is to provide information and recommendations for the preparation work necessary prior to adding attic insulation. Even though the purpose of this guide is to save energy, health, safety, and durability should not be compromised by energy efficiency. Accordingly, combustion safety and ventilation for indoor air quality are addressed first. Durability and attic ventilation then follow. Finally, to maximize energy savings, air sealing is completed prior to insulating. The guide is intended for home remodelers, builders, insulation contractors, mechanical contractors, general contractors who have previously done remodeling and homeowners as a guide to the work that needs to be done.

  17. In-Depth Analysis of Simulation Engine Codes for Comparison with DOE s Roof Savings Calculator and Measured Data

    SciTech Connect (OSTI)

    New, Joshua Ryan; Levinson, Ronnen; Huang, Yu; Sanyal, Jibonananda; Miller, William A.; Mellot, Joe; Childs, Kenneth W.; Kriner, Scott

    2014-06-01

    The Roof Savings Calculator (RSC) was developed through collaborations among Oak Ridge National Laboratory (ORNL), White Box Technologies, Lawrence Berkeley National Laboratory (LBNL), and the Environmental Protection Agency in the context of a California Energy Commission Public Interest Energy Research project to make cool-color roofing materials a market reality. The RSC website and a simulation engine validated against demonstration homes were developed to replace the liberal DOE Cool Roof Calculator and the conservative EPA Energy Star Roofing Calculator, which reported different roof savings estimates. A preliminary analysis arrived at a tentative explanation for why RSC results differed from previous LBNL studies and provided guidance for future analysis in the comparison of four simulation programs (doe2attic, DOE-2.1E, EnergyPlus, and MicroPas), including heat exchange between the attic surfaces (principally the roof and ceiling) and the resulting heat flows through the ceiling to the building below. The results were consolidated in an ORNL technical report, ORNL/TM-2013/501. This report is an in-depth inter-comparison of four programs with detailed measured data from an experimental facility operated by ORNL in South Carolina in which different segments of the attic had different roof and attic systems.

  18. Field Testing Unvented Roofs with Asphalt Shingles in Cold and Hot-Humid Climates

    SciTech Connect (OSTI)

    Ueno, Kohta; Lstiburek, Joseph W.

    2015-09-01

    Test houses with unvented roof assemblies were built to measure long-term moisture performance, in the Chicago area (5A) and the Houston area (2A). The Chicago-area test bed had seven experimental rafter bays, including a control vented compact roof, and six unvented roof variants with cellulose or fiberglass insulation. The interior was run at 50% RH. The Houston-area roof was an unvented attic insulated with spray-applied fiberglass. Most ridges and hips were built with a diffusion vent detail, capped with vapor permeable roof membrane. In contrast, the diffusion vent roofs had drier conditions at the roof peak in wintertime, but during the summer, RHs and MCs were higher than the unvented roof (albeit in the safe range).

  19. Green Roofs

    SciTech Connect (OSTI)

    2004-08-01

    A New Technology Demonstration Publication Green roofs can improve the energy performance of federal buildings, help manage stormwater, reduce airborne emissions, and mitigate the effects of urban heat islands.

  20. An in-situ evaluation of the settling of loose-fill rockwool insulation in the attics of two manufactured home units

    SciTech Connect (OSTI)

    Graves, R.S.; Yarbrough, D.W.

    1987-01-01

    The effect of vibrations due to manufacturing and transport on the thickness, density, and calculated thermal resistance (R-value) of loose-fill rock wool insulation installed in two manufactured home units has been determined. Thickness and density measurements on blown attic insulation were made after installation, at the end of the manufacturing process, and after the units were towed 265 miles. These measurements were used to calculate R-values for the attic insulation. The end sections of the two units showed an overall insulation thickness decrease of about 16% and an average R-value change from 31.2 to 28.8 ft/sup 2/.h./sup 0/ F/Btu. An estimated R-value greater than 30 ftc/sup 2/.h./sup 0/ F/Btu resulted from averaging the end and middle sections of the two units. The effect of reduced thickness along the edges of the attic space was not included in the estimate. 8 refs., 2 figs., 1 tab.

  1. Thicknesses, densities, and calculated thermal resistances for loose-fill rock wool installed in two attic sections of a manufactured house

    SciTech Connect (OSTI)

    Graves, R.S.; Yarbrough, D.W.

    1986-02-01

    The effect of vibrations due to manufacturing and transport on the thickness, density, and calculated thermal resistance (R-value) of loose-fill rock wool insulation installed in two manufactured home units has been determined. Thickness and density measurements on blown attic insulation were made after installation, at the end of the manufacturing process, and after the units were towed 265 miles. These measurements were used to calculate R-values for the attic insulation. The end sections of the two units showed an overall insulation thickness decrease of about 16% and an average R-value change from 31.2 to 28.8 ft/sup 2/ x h x /sup 0/F/Btu. An estimated R-value greater than 30 ft/sup 2/ x h x /sup 0/F/Btu resulted from averaging the end and middle sections of the two units. The effect of reduced thickness along the edges of the attic space was not included in the estimate.

  2. Inverted Attic Bulkhead for HVAC Ductwork, Roseville, California...

    Energy Savers [EERE]

    Inverted Attic Bulkhead for HVAC Ductwork Roseville, California PROJECT INFORMATION ... bathrooms constructed in Roseville, California, for one year as an occupied test home. ...

  3. Modeling the Energy Efficiency of Residential Attic Assemblies | Department

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

    of Energy Modeling the Energy Efficiency of Residential Attic Assemblies Modeling the Energy Efficiency of Residential Attic Assemblies This graphic depicts all the modes of heat transfer that AtticSim evaluates. This graphic depicts all the modes of heat transfer that AtticSim evaluates. Lead Performer: Oak Ridge National Laboratory - Oak Ridge, TN Partners: Fraunhofer USA - Boston, MA DOE Funding: $220,000 Project Term: 10/1/2013 - 9/30/2014 Project Objective The ultimate goal is to

  4. Analysis of DOE s Roof Savings Calculator with Comparison to other Simulation Engines

    SciTech Connect (OSTI)

    New, Joshua Ryan; Huang, Yu; Levinson, Ronnen; Mellot, Joe; Sanyal, Jibonananda; Childs, Kenneth W

    2014-01-01

    A web-based Roof Savings Calculator (RSC) has been deployed for the Department of Energy as an industry-consensus tool to help building owners, manufacturers, distributors, contractors and researchers easily run complex roof and attic simulations. This tool employs the latest web technologies and usability design to provide an easy input interface to an annual simulation of hour-by-hour, whole-building performance using the world-class simulation tools DOE-2.1E and AtticSim. Building defaults were assigned based on national averages and can provide estimated annual energy and cost savings after the user selects nothing more than building location. In addition to cool reflective roofs, the RSC tool can simulate multiple roof and attic configurations including different roof slopes, above sheathing ventilation, radiant barriers, low-emittance surfaces, HVAC duct location, duct leakage rates, multiple layers of building materials, ceiling and deck insulation levels, and other parameters. A base case and energy-efficient alternative can be compared side-by-side to generate an energy/cost savings estimate between two buildings. The RSC tool was benchmarked against field data for demonstration homes in Ft. Irwin, CA. However, RSC gives different energy savings estimates than previous cool roof simulation tools so more thorough software and empirical validation proved necessary. This report consolidates much of the preliminary analysis for comparison of RSC s projected energy savings to that from other simulation engines.

  5. Promising Technology: Cool Roofs

    Broader source: Energy.gov [DOE]

    A cool roof increases the solar reflectance of the roof surface. By reflecting more sunlight, the roof surface maintains a cooler temperature. This decrease in temperature leads to less heat transfer through the roof into the building below. During the cooling season, the addition of a cool roof can decrease the cooling load of the building.

  6. Savings Project: Attic Stairs Cover Box | Department of Energy

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

    open gaps in existing stair hatch. Time to Complete 1-4 HOURS Overall Cost 50-150 Sealing gaps in the opening and installing an insulating cover box on your attic stairs access ...

  7. One Cool Roof

    Broader source: Energy.gov [DOE]

    The 134,629 sq. ft. (about 3 acres) roof of the Office of Scientific and Technical Information (OSTI) building in Oak Ridge, Tennessee is now officially a "Cool Roof" -- making it energy efficient in ways that darker roofs are not. Cool roofs are light in color, and therefore, reflect rather than absorb sunlight.

  8. Roof bolting improvements

    SciTech Connect (OSTI)

    Fiscor, S.

    2008-11-15

    Suppliers partner with mine operators to offer safer, more productive tools for roof bolting. 4 figs.

  9. Moisture Management for High R-Value Walls

    SciTech Connect (OSTI)

    Lepage, R.; Schumacher, C.; Lukachko, A.

    2013-11-01

    This report explains the moisture-related concerns for high R-value wall assemblies and discusses past Building America research work that informs this study. In this project, hygrothermal simulations were prepared for several common approaches to High R-value wall construction in six cities (Houston, Atlanta, Seattle, St. Louis, Chicago, and International Falls) representing a range of climate zones. The modeling program assessed the moisture durability of the wall assemblies based on three primary sources of moisture: construction moisture, air leakage condensation, and bulk water leakage; the report presents results of the study.

  10. Field Testing Unvented Roofs with Asphalt Shingles in Cold and Hot-Humid Climates

    SciTech Connect (OSTI)

    Ueno, Kohta; Lstiburek, Joseph W.

    2015-09-01

    Insulating roofs with dense-pack cellulose (instead of spray foam) has moisture risks, but is a lower cost approach. If moisture risks could be addressed, buildings could benefit from retrofit options, and the ability to bring HVAC systems within the conditioned space. Test houses with unvented roof assemblies were built to measure long-term moisture performance, in the Chicago area (5A) and the Houston area (2A). The Chicago-area test bed had seven experimental rafter bays, including a control vented compact roof, and six unvented roof variants with cellulose or fiberglass insulation. The interior was run at 50% RH. All roofs except the vented cathedral assembly experienced wood moisture contents and RH levels high enough to constitute failure. Disassembly at the end of the experiment showed that the unvented fiberglass roofs had wet sheathing and mold growth. In contrast, the cellulose roofs only had slight issues, such as rusted fasteners and sheathing grain raise. The Houston-area roof was an unvented attic insulated with spray-applied fiberglass. Most ridges and hips were built with a diffusion vent detail, capped with vapor permeable roof membrane. Some ridge sections were built as a conventional unvented roof, as a control. In the control unvented roofs, roof peak RHs reached high levels in the first winter; as exterior conditions warmed, RHs quickly fell. In contrast, the diffusion vent roofs had drier conditions at the roof peak in wintertime, but during the summer, RHs and MCs were higher than the unvented roof (albeit in the safe range).

  11. Ghosts in the Attic - Horror Stories from the Field (What to...

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

    Ghosts in the Attic - Horror Stories from the Field (What to Do When Things Go Wrong) (201) Ghosts in the Attic - Horror Stories from the Field (What to Do When Things Go Wrong)...

  12. Look Up to See Your Bills Go Down: Making Your Attic More Efficient...

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

    Look Up to See Your Bills Go Down: Making Your Attic More Efficient Look Up to See Your Bills Go Down: Making Your Attic More Efficient July 18, 2011 - 5:29pm Addthis Allison Casey ...

  13. 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. PDF icon Inverted Attic Bulkhead for

  14. New "Cool Roof Time Machine" Will Accelerate Cool Roof Deployment...

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

    "Cool Roof Time Machine" Will Accelerate Cool Roof Deployment New "Cool Roof Time Machine" Will Accelerate Cool Roof Deployment April 24, 2015 - 4:21pm Addthis Berkeley Lab...

  15. Guide to Cool Roofs

    Energy Savers [EERE]

    beautify your home. The immediate and long-term benefits of roofs that stay cool in the sun have made cool roofing the fastest growing sector of the building industry. Studies...

  16. Building America Case Study: Field Testing an Unvented Roof with Fibrous Insulation and Tiles, Orlando, Florida

    SciTech Connect (OSTI)

    2015-11-01

    This research is a test implementation of an unvented tile roof assembly in a hot-humid climate (Orlando, FL; Zone 2A), insulated with air permeable insulation (netted and blown fiberglass). Given the localized moisture accumulation and failures seen in previous unvented roof field work, it was theorized that a 'diffusion vent' (water vapor open, but air barrier 'closed') at the highest points in the roof assembly might allow for the wintertime release of moisture, to safe levels. The 'diffusion vent' is an open slot at the ridge and hips, covered with a water-resistant but vapor open (500+ perm) air barrier membrane. As a control comparison, one portion of the roof was constructed as a typical unvented roof (self-adhered membrane at ridge). The data collected to date indicate that the diffusion vent roof shows greater moisture safety than the conventional, unvented roof design. The unvented roof had extended winter periods of 95-100% RH, and wafer (wood surrogate RH sensor) measurements indicating possible condensation; high moisture levels were concentrated at the roof ridge. In contrast, the diffusion vent roofs had drier conditions, with most peak MCs (sheathing) below 20%. In the spring, as outdoor temperatures warmed, all roofs dried well into the safe range (10% MC or less). Some roof-wall interfaces showed moderately high MCs; this might be due to moisture accumulation at the highest point in the lower attic, and/or shading of the roof by the adjacent second story. Monitoring will be continued at least through spring 2016 (another winter and spring).

  17. Moisture Management for High R-Value Walls

    SciTech Connect (OSTI)

    Lepage, R.; Schumacher, C.; Lukachko, A.

    2013-11-01

    The following report explains the moisture-related concerns for High R-value wall assemblies and discusses past Building America research work that informs this study. Hygrothermal simulations were prepared for several common approaches to High R-value wall construction in six cities (Houston, Atlanta, Seattle, St. Louis, Chicago, and International Falls) representing a range of climate zones (2, 3, 4C, 4, 5A, and 7, respectively). The simulations are informed by experience gained from past research in this area and validated by field measurement and forensic experience. The modeling program was developed to assess the moisture durability of the wall assemblies based on three primary sources of moisture: construction moisture, air leakage condensation, and bulk water leakage. The peak annual moisture content of the wood based exterior sheathing was used to comparatively analyze the response to the moisture loads for each of the walls in each given city. Walls which experienced sheathing moisture contents between 20% and 28% were identified as risky, whereas those exceeding 28% were identified as very high risk. All of the wall assemblies perform well under idealized conditions. However, only the walls with exterior insulation, or cavity insulation which provides a hygrothermal function similar to exterior insulation, perform adequately when exposed to moisture loads. Walls with only cavity insulation are particularly susceptible to air leakage condensation. None of the walls performed well when a precipitation based bulk water leak was introduced to the backside of the sheathing, emphasizing the importance of proper flashing details.

  18. PERFORMANCE EVALUATION OF A SUSTAINABLE AND ENERGY EFFICIENT RE-ROOFING TECHNOLOGY USING FIELD-TEST DATA

    SciTech Connect (OSTI)

    Biswas, Kaushik; Miller, William A; Childs, Phillip W; Kosny, Jan; Kriner, Scott

    2011-01-01

    Three test attics were constructed to evaluate a new sustainable method of re-roofing utilizing photo-voltaic (PV) laminates, metal roofing panels, and PCM heat sink in the Envelope Systems Research Apparatus (ESRA) facility in the ORNL campus. Figure 1 is a picture of the three attic roofs located adjacent to each other. The leftmost roof is the conventional shingle roof, followed by the metal panel roof incorporating the cool-roof coating, and third from left is the roof with the PCM. On the PCM roof, the PV panels are seen as well; they're labelled from left-to-right as panels 5, 6 and 7. The metal panel roof consists of three metal panels with the cool-roof coating; in further discussion this is referred to as the infrared reflective (IRR) metal roof. The IRR metal panels reflect the incoming solar radiation and then quickly re-emit the remaining absorbed portion, thereby reducing the solar heat gain of the attic. Surface reflectance of the panels were measured using a Solar Spectrum Reflectometer. In the 0.35-2.0 {mu}m wavelength interval, which accounts for more than 94% of the solar energy, the IRR panels have an average reflectance of 0.303. In the infrared portion of the spectrum, the IRR panel reflectance is 0.633. The PCM roof consists of a layer of macro-encapsulated bio-based PCM at the bottom, followed by a 2-cm thick layer of dense fiberglass insulation with a reflective surface on top, and metal panels with pre-installed PV laminates on top. The PCM has a melting point of 29 C (84.2 F) and total enthalpy between 180 and 190 J/g. The PCM was macro-packaged in between two layers of heavy-duty plastic foil forming arrays of PCM cells. Two air cavities, between PCM cells and above the fiberglass insulation, helped the over-the-deck natural air ventilation. It is anticipated that during summer, this extra ventilation will help in reducing the attic-generated cooling loads. The extra ventilation, in conjunction with the PCM heat sink, are used to minimize thermal stresses due to the PV laminates on sunny days. In PV laminates sunlight is converted into electricity and heat simultaneous. In case of building integrated applications, a relatively high solar absorption of amorphous silicon laminates can be utilized during the winter for solar heating purposes with PCM providing necessary heat storage capacity. However, PV laminates may also generate increased building cooling loads during the summer months. Therefore, in this project, the PCM heat sink was to minimize summer heat gains as well. The PCM-fibreglass-PV assembly and the IRR metal panels are capable of being installed directly on top of existing shingle roofs during re-roofing, precluding the need for recycling or disposal of waste materials. The PV laminates installed on the PCM attic are PVL-144 models from Uni-Solar. Each laminate contains 22 triple junction amorphous silicon solar cells connected in series. The silicon cells are of dimensions 356 mm x 239 mm (14-in. x 9.4-in.). The PVL-144 laminate is encapsulated in durable ETFE (poly-ethylene-co-tetrafluoroethylene) high light-transmissive polymer. Table 1 lists the power, voltage and current ratings of the PVL-144 panel.

  19. Measure Guideline: Air Sealing Attics in Multifamily Buildings

    SciTech Connect (OSTI)

    Otis, C.; Maxwell, S.

    2012-06-01

    This Building America Measure Guideline is intended for owners, builders, contractors, homeowners, and other stakeholders in the multifamily building industry, and focuses on challenges found in existing buildings for a variety of housing types. It explains why air sealing is desirable, explores related health and safety issues, and identifies common air leakage points in multifamily building attics. In addition, it also gives an overview of materials and techniques typically used to perform air sealing work.

  20. Mine roof support

    SciTech Connect (OSTI)

    Bollmann, A.

    1981-02-24

    A mine roof support has a base and a roof shield pivoted to the base and carrying at its upper end a pivoted cap which is urged upwardly against the mine roof by a hydraulic pit prop reacting between the cap and the base. The lower end of the roof shield is connected to the base by two links each having a pivot cooperating with a pivot on the roof shield, and a pivot cooperating with a pivot on the base. In addition, the base and/or the lower end of the roof shield has an auxiliary for each link and each link has an auxiliary pivot which can be connected with one of the auxiliary pivots of the base or lower end.

  1. Cool Roofing Technologies

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

    Cool Roofing Technologies Hashem Akbari Heat Island Group Ernest Orlando Lawrence Berkeley National Laboratory Tel: 510-486-4287 E_mail: H_Akbari@LBL.gov http://HeatIsland.LBL.gov STEAB Visit to LBNL August 14, 2007 2 Orthophoto of Sacramento 3 Under the Canopy Fabric of Sacramento, CA 0 10 20 30 40 50 60 70 80 Downtown Industrial Industrial Office Com. Com. Res. % of surface area Grass Roofs Pavements Others Cooling roofs by increasing solar reflectance * A conventional dark roof absorbs most

  2. Cool Roofs: An Introduction

    Broader source: Energy.gov [DOE]

    I've been hearing a lot about cool roof technologies, so I welcomed the chance to learn more at a recent seminar.

  3. Energy 101: Cool Roofs

    ScienceCinema (OSTI)

    None

    2013-05-29

    This edition of Energy 101 takes a look at how switching to a cool roof can save you money and benefit the environment.

  4. Why Cool Roofs?

    ScienceCinema (OSTI)

    Chu, Steven

    2013-05-29

    By installing a cool roof at DOE, the federal government and Secretary Chu are helping to educate families and businesses about the important energy and cost savings that can come with this simple, low-cost technology. Cool roofs have the potential to quickly and dramatically reduce global carbon emissions while saving money every month on consumers' electrical bills.

  5. Guide to Cool Roofs

    SciTech Connect (OSTI)

    2011-02-01

    Traditional dark-colored roofing materials absorb sunlight, making them warm in the sun and increasing the need for air conditioning. White or special "cool color" roofs absorb less sunlight, stay cooler in the sun and transmit less heat into the building.

  6. Mine roof support system

    SciTech Connect (OSTI)

    Culley, D.H.

    1982-01-26

    A mine roof support system is disclosed having sets of laterally spaced pairs of elongated support members adapted to be moved into and out of abutting relation with a mine roof. Wheel supported frames extend between and connect adjacent end portions of each pair of support members with adjacent wheel supported frames at the ends of the support members being in spaced tandem relation and connected to each other by connector members. Extensible prop members are connected to and move the wheel supported frames and the elongated support members connected thereto selectively toward and away from the mine roof.

  7. Roof bolting equipment & technology

    SciTech Connect (OSTI)

    Fiscor, S.

    2009-04-15

    Technology provides an evaluator path to improvement for roof bolting machines. Bucyrus offers three different roof bolts models for various mining conditions. The LRB-15 AR is a single-arm boiler recommended for ranges of 32 inches and above; the dual-arm RB2-52A for ranges of 42 inches and above; and the dual-arm RB2-88A for ranges of 54 inches and above. Design features are discussed in the article. Developments in roof bolting technology by Joy Mining Machinery are reported. 4 photos.

  8. Performance Evaluation of Advanced Retrofit Roof Technologies Using Field-Test Data Phase Three Final Report, Volume 2

    SciTech Connect (OSTI)

    Biswas, Kaushik; Childs, Phillip W.; Atchley, Jerald Allen

    2015-01-01

    This article presents some miscellaneous data from two low-slope and two steep-slope experimental roofs. The low-slope roofs were designed to compare the performance of various roof coatings exposed to natural weatherization. The steep-slope roofs contained different combinations of phase change material, rigid insulation, low emittance surface and above-sheathing ventilation, with standing-seam metal panels on top. The steep-slope roofs were constructed on a series of adjacent attics separated at the gables using thick foam insulation. This article describes phase three (3) of a study that began in 2009 to evaluate the energy benefits of a sustainable re-roofing technology utilizing standing-seam metal roofing panels combined with energy efficient features like above-sheathing-ventilation (ASV), phase change material (PCM) and rigid insulation board. The data from phases 1 and 2 have been previously published and reported [Kosny et al., 2011; Biswas et al., 2011; Biswas and Childs, 2012; Kosny et al., 2012]. Based on previous data analyses and discussions within the research group, additional test roofs were installed in May 2012, to test new configurations and further investigate different components of the dynamic insulation systems. Some experimental data from phase 3 testing from May 2012 to December 2013 and some EnergyPlus modeling results have been reported in volumes 1 and 3, respectively, of the final report [Biswas et al., 2014; Biswas and Bhandari, 2014].

  9. Cool Roofs | Department of Energy

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

    Design » Design for Efficiency » Cool Roofs Cool Roofs Learn how switching to a cool roof can save you money and benefit the environment. A cool roof is one that has been designed to reflect more sunlight and absorb less heat than a standard roof. Cool roofs can be made of a highly reflective type of paint, a sheet covering, or highly reflective tiles or shingles. Nearly any type of building can benefit from a cool roof, but consider the climate and other factors before deciding to install

  10. Mine roof support

    SciTech Connect (OSTI)

    Bollmann, A.

    1982-01-05

    A mine roof support has a base, a supporting prop extending upwardly from the base, an elongated roof-supporting element having one portion supported by the supporting prop and another portion telescopable relative to the one portion toward a mine face and having a free end formed as a housing with a width corresponding to the width of the one portion, and a thrust prop arranged to support the free end section of the telescopable portion of the roof-supporting element and having a roof-side end section which is forcedly displaceable in the housing in direction of elongation of a mine and pivotable in a substantially vertical plane about an axle arranged in the housing.

  11. Why Cool Roofs?

    Broader source: Energy.gov [DOE]

    By installing a cool roof at DOE, the federal government and Secretary Chu are helping to educate families and businesses about the important energy and cost savings that can come with this simple,...

  12. Ducts in the Attic? What Were They Thinking? Preprint

    SciTech Connect (OSTI)

    Roberts, D.; Winkler, J.

    2010-08-01

    As energy-efficiency efforts focus increasingly on existing homes, we scratch our heads about construction decisions made 30, 40, 50-years ago and ask: 'What were they thinking?' A logical follow-on question is: 'What will folks think in 2050 about the homes we're building today?' This question can lead to a lively discussion, but the current practice that we find most alarming is placing ducts in the attic. In this paper, we explore through literature and analysis the impact duct location has on cooling load, peak demand, and energy cost in hot climates. For a typical new home in these climates, we estimate that locating ducts in attics rather than inside conditioned space increases the cooling load 0.5 to 1 ton, increases cooling costs 15% and increases demand by 0.75 kW. The aggregate demand to service duct loss in homes built in Houston, Las Vegas, and Phoenix during the period 2000 through 2009 is estimated to be 700 MW. We present options for building homes with ducts in conditioned space and demonstrate that these options compare favorably with other common approaches to achieving electricity peak demand and consumption savings in homes.

  13. Attic Retrofits Using Nail-Base Insulated Panels | Department of Energy

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

    Attic Retrofits Using Nail-Base Insulated Panels Attic Retrofits Using Nail-Base Insulated Panels Photo courtesy of the Structural Insulated Panel Association. Photo courtesy of the Structural Insulated Panel Association. Lead Performer: Home Innovation Research Labs-Upper Marlboro, MD Partners: Structural Insulated Panel Association, American Chemistry Council, Forest Products Laboratory, DuPont, APA-The Engineered Wood Association, Insurance Institute for Business and Home Safety, Remodeling

  14. Mine roof supporting system

    SciTech Connect (OSTI)

    Curry, P.F.

    1981-06-23

    A stabilizing arrangement for mine roof support systems of the type in which a series of support units, each including a transverse beam supported at opposite ends by extensible props, are interconnected by extensible struts in a manner to be selfadvancing by alternate retraction of support units from a roof supporting condition and extension of the struts to advance such retracted units relative to others of such units which are in an extended roof engaging condition. The connection of each prop to the beam in a given unit is pivotal to allow deflection of the beam and props of a supporting unit from a normal perpendicular relationship under load. The stabilizing means restores the props and beam to a normal perpendicular relationship for advancing movement of each support unit. The supporting units are further stabilized relative to the struts by prop supporting brackets permitting canting movement of the props from a perpendicular relationship with respect to the struts but maintaining the props in a generally upright position for unit advance.

  15. Insulation Project Moves Toward Higher R-value | Department of Energy

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

    Insulation Project Moves Toward Higher R-value Insulation Project Moves Toward Higher R-value April 26, 2016 - 3:51pm Addthis Oak Ridge National Laboratory's Kaushik Biswas analyzes small-scale modified atmospheric insulation foam composites in a multi-transducer heat flow meter apparatus. Oak Ridge National Laboratory's Kaushik Biswas analyzes small-scale modified atmospheric insulation foam composites in a multi-transducer heat flow meter apparatus. This article originally appeared in the Oak

  16. Cool Roofs | Department of Energy

    Office of Environmental Management (EM)

    power plant emissions, including carbon dioxide, sulfur dioxide, nitrous oxides, and mercury, by reducing cooling energy use in buildings. Types of Roofs and How They Can Be Made...

  17. 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 ...

  18. Assessment of technologies for constructing self-drying low-slope roofs

    SciTech Connect (OSTI)

    Kyle, D.M.; Desjarlais, A.O.

    1994-05-01

    Issues associated with removing excessive moisture from low-slope roofs have been assessed. The economic costs associated with moisture trapped in existing roofs have been estimated. The evidence suggests that existing moisture levels cause approximately a 40% overall reduction in the R-value of installed roofing insulation in the United States. Excess operating costs are further increased by a summertime heat transfer mode unique to wet insulation, caused by the daily migration of water within the roof. By itself, this effect can increase peak electrical demand for air conditioning by roughly 15 W/m{sup 2} of roofing, depending on the type of insulation. This effect will increase peak demand capacity required of utilities in any geographic region (e.g., 900 MW in the South). A simple formula has been derived for predicting the effect that self-drying roofs can have upon time-averaged construction costs. It is presumed that time-averaged costs depend predominantly upon (1) actual service life and (2) the likelihood that the less expensive recover membranes can be installed safely over old roofs. For example, an increase in service life from 15 to 20 years should reduce the current cost of roofing ($12 billion/year) by 21%. Another simple formula for predicting the reroofing waste volume indicates that an increase in service life from 15 to 20 years might reduce the current estimated 0.4 billion ft{sup 3}/year of waste by 25%. A finite-difference computer program has been used to study the flow of heat and moisture within typical existing roofs for a variety of US climates. Nearly all publicly available experimental drying data have been consulted. The drying times for most existing low-slope roofs in the United States are controlled largely climate and the permeability of the structural deck to water vapor.

  19. Cool Roofs Webinar | Department of Energy

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

    Cool Roofs Webinar Cool Roofs Webinar On April 11, 2011, Blaise Stoltenberg and Kosol Kiatreungwattana of the National Renewable Energy Laboratory presented a Webinar about roofs that are designed to maintain a lower roof temperature than traditional roofs do, in order to reduce energy bills by decreasing air conditioning needs, improve indoor thermal comfort, and decrease room operating temperature to try to extend roof service life. It's one of the presentations in a series of Sustainable

  20. Measuring mine roof bolt strains

    DOE Patents [OSTI]

    Steblay, Bernard J.

    1986-01-01

    A mine roof bolt and a method of measuring the strain in mine roof bolts of this type are disclosed. According to the method, a flat portion on the head of the mine roof bolt is first machined. Next, a hole is drilled radially through the bolt at a predetermined distance from the bolt head. After installation of the mine roof bolt and loading, the strain of the mine roof bolt is measured by generating an ultrasonic pulse at the flat portion. The time of travel of the ultrasonic pulse reflected from the hole is measured. This time of travel is a function of the distance from the flat portion to the hole and increases as the bolt is loaded. Consequently, the time measurement is correlated to the strain in the bolt. Compensation for various factors affecting the travel time are also provided.

  1. Solar Roofing Systems Inc | Open Energy Information

    Open Energy Info (EERE)

    Inc Place: Aurora, Ontario, Canada Zip: L4G 3S8 Product: Manufactures and develops photovoltaic roofing and portable products. References: Solar Roofing Systems Inc1 This...

  2. OCR Solar Roofing Inc | Open Energy Information

    Open Energy Info (EERE)

    OCR Solar Roofing Inc Jump to: navigation, search Name: OCR Solar & Roofing Inc Place: Vacaville, California Product: US installer of turnkey PV rooftops, focussing on the Northern...

  3. Update on R-Value Measurements @ NCERC (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Update on R-Value Measurements @ NCERC Citation Details In-Document Search Title: Update on R-Value Measurements @ NCERC No abstract prepared. Authors: Bredeweg, Todd Allen [1] + Show Author Affiliations Los Alamos National Laboratory Publication Date: 2012-07-11 OSTI Identifier: 1045992 Report Number(s): LA-UR-12-22840 TRN: US1203893 DOE Contract Number: AC52-06NA25396 Resource Type: Conference Resource Relation: Conference: NCNS F2012 Quarterly NP/PR Review ; 2012-07-11 - 2012-07-12 ;

  4. Oklahoma Tribe to Install Solar Roof

    Broader source: Energy.gov [DOE]

    An Indian tribe in Anadarko, Oklahoma is installing solar panel roofs on two tribal government buildings.

  5. Energy 101: Cool Roofs | Department of Energy

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

    Cool Roofs Energy 101: Cool Roofs Addthis Description This edition of Energy 101 takes a look at how switching to a cool roof can save you money and benefit the environment. Text Version Below is the text version for the Energy 101: Cool Roofs video. The video opens with "Energy 101: Cool Roofs." This is followed by images of residential rooftops. Maybe you've never given much thought about what color your roof is, or what it's made of. But your roof could be costing you more money

  6. Roof Separation Highlights Bolting Priority

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

    WIPP UPDATE: January 21, 2015 Roof Separation Highlights Bolting Priority On January 15, Mining and Ground Control Engineers at WIPP discovered that a portion of the ceiling in the Panel 3 access drift had fallen in a restricted access area. The roof fall was discovered during routine ground control and bulkhead inspections conducted by WIPP geotechnical staff, and the section that fell was estimated to be approximately 8' long by 8'wide and 24" thick. Access to this area has been

  7. Hotbox Test R-value Database and the Building Envelopes Program (BEP)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Building Envelopes Program at Oak Ridge National Laboratory (ORNL) is a program within the Buildings Technology Center (BTC), the premier U.S. research facility devoted to developing technologies that improve the energy efficiency and environmental compatibility of residential and commercial buildings. Our program is divided into two parts: building envelope research, which focuses on the structural elements that enclose a building (walls, roofs and foundations), and materials research, which concentrates on the materials within the envelope systems (such as insulation). The building envelope provides the thermal barrier between the indoor and outdoor environment, and its elements are the key determinants of a building's energy requirements that result from the climate where it is located. [copied from http://www.ornl.gov/sci/roofs+walls/

  8. Roof screening for underground coal mines: recent developments

    SciTech Connect (OSTI)

    Compton, C.S.; Gallagher, S.; Molinda, G.M.; Mark, C.; Wilson, G.

    2008-06-15

    The use of screens to control falls of the immediate roof or roof skin (that is between the installed primary and secondary roof supports) is described. 5 figs.

  9. SCE Roof Project Solar Power Plant | Open Energy Information

    Open Energy Info (EERE)

    SCE Roof Project Solar Power Plant Jump to: navigation, search Name SCE Roof Project Solar Power Plant Facility SCE Roof Project Sector Solar Facility Type Photovoltaic Developer...

  10. Ghosts in the Attic- Horror Stories from the Field, What to Do When Things Go Wrong (201)

    Broader source: Energy.gov [DOE]

    Better Buildings Residential Network Peer Exchange Call Series: Ghosts in the Attic - Horror Stories from the Field, What to Do When Things Go Wrong (201), call slides and discussion summary.

  11. Rehab guide: Roofs. Volume 3

    SciTech Connect (OSTI)

    1999-03-01

    Nine volumes will eventually make up The Rehab Guide in its entirety, and they are listed on the back cover of this volume. Each one is devoted to distinct elements of the house, and within each volume is a range of issues that are common to that element of home rehabilitation work. This volume, Roofs, for example, covers the major roofing systems including framing and sheathing; protective strategies such as underlayments and flashing; energy and air infiltration issues; roofing materials; and gutters and down-spouts. Each volume addresses a wide range techniques, materials, and tools, and recommendations based on regional differences around the country. Throughout The Rehab Guide, special attention is given to issues related to energy efficiency, sustainability, and accessibility.

  12. Self advancing mine roof supports

    SciTech Connect (OSTI)

    Seddon, J.; Jones, F.

    1985-03-19

    A self-advancing mine-roof-support for use in or aligned with a main roadway or gate has a floor-engaging part and a roof engaging part spaced apart by extensible load-bearing prop or jack means, and engagement means for a face-conveyor and a transversely acting transfer conveyor whereby their relative positions are constrained to facilitate discharge of mineral from one conveyor to the other. The engagement means for the face conveyor comprises sliding anchor beams that assure maintenance of the relative attitudes of the support and the face conveyor and the transfer conveyor is held fore and aft of the support.

  13. IDENTIFYING ROOF FALL PREDICTORS USING FUZZY CLASSIFICATION

    SciTech Connect (OSTI)

    Bertoncini, C. A.; Hinders, M. K.

    2010-02-22

    Microseismic monitoring involves placing geophones on the rock surfaces of a mine to record seismic activity. Classification of microseismic mine data can be used to predict seismic events in a mine to mitigate mining hazards, such as roof falls, where properly bolting and bracing the roof is often an insufficient method of preventing weak roofs from destabilizing. In this study, six months of recorded acoustic waveforms from microseismic monitoring in a Pennsylvania limestone mine were analyzed using classification techniques to predict roof falls. Fuzzy classification using features selected for computational ease was applied on the mine data. Both large roof fall events could be predicted using a Roof Fall Index (RFI) metric calculated from the results of the fuzzy classification. RFI was successfully used to resolve the two significant roof fall events and predicted both events by at least 15 hours before visual signs of the roof falls were evident.

  14. Guidelines for Selecting Cool Roofs | Department of Energy

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

    Guidelines for Selecting Cool Roofs Guidelines for Selecting Cool Roofs Guide covers how to understand, evaluate, and implement cool roof technologies. PDF icon coolroofguide.pdf More Documents & Publications Green Roofs - Federal Technology Alert Microsoft PowerPoint - Cool Roofs_090804 Accelerated Aging of Roofing Materials - 2013 BTO Peer Review

  15. U. S. Attic Grsrgy 'bmiss~o3 U. S. Atomic lb-al-w CamLf3sion December 27, S.957

    Office of Legacy Management (LM)

    a . - 3 U. S. Attic Grsrgy 'bmiss~o3 U. S. Atomic lb-al-w CamLf3sion December 27, S.957

  16. Evaluation of Roof Bolting Requirements Based on In-Mine Roof Bolter Drilling

    SciTech Connect (OSTI)

    Syd S. Peng

    2005-10-01

    Roof bolting is the most popular method for underground openings in the mining industry, especially in the bedded deposits such as coal. In fact, all U.S. underground coal mine entries are roof-bolted as required by law. However, roof falls still occur frequently in the roof bolted entries. The two possible reasons are: the lack of knowledge of and technology to detect the roof geological conditions in advance of mining, and lack of roof bolting design criteria for modern roof bolting systems. This research is to develop a method for predicting the roof geology and stability condition in real time during roof bolting operation. Based on this information, roof bolting design criteria for modern roof bolting systems will be developed for implementation in real time. For the prediction of roof geology and stability condition in real time, a micro processor was used and a program developed to monitor and record the drilling parameters of roof bolter. These parameters include feed pressure, feed flow (penetration rate), rotation pressure, rotation rate, vacuum pressure, oil temperature of hydraulic circuit, and signals for controlling machine. From the results of a series of laboratory and underground tests so far, feed pressure is found to be a good indicator for identifying the voids/fractures and estimating the roof rock strength. The method for determining quantitatively the location and the size of void/fracture and estimating the roof rock strength from the drilling parameters of roof bolter was developed. Also, a set of computational rules has been developed for in-mine roof using measured roof drilling parameters and implemented in MRGIS (Mine Roof Geology Information System), a software package developed to allow mine engineers to make use of the large amount of roof drilling parameters for predicting roof geology properties automatically. For the development of roof bolting criteria, finite element models were developed for tensioned and fully grouted bolting designs. Numerical simulations were performed to investigate the mechanisms of modern roof bolting systems including both the tension and fully grouted bolts. Parameters to be studied are: bolt length, bolt spacing, bolt size/strength, grout annulus, in-situ stress condition, overburden depth, and roof geology (massive strata, fractured, and laminated or thinly-bedded). Based on the analysis of the mechanisms of both bolting systems and failure modes of the bolted strata, roof bolting design criteria and programs for modern roof bolting systems were developed. These criterion and/or programs were combined with the MRGIS for use in conjunction with roof bolt installation.

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

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

    Energy-Efficient Roofs Tips: Energy-Efficient Roofs Tips: Energy-Efficient Roofs If you've ever stood on a roof on a hot summer day, you know how hot it can get. The heat from your roof makes your air conditioner work even harder to keep your home cool. Cool Roofs If you are building a new home, decide during planning whether you want a cool roof, and if you want to convert an existing roof, you can: Retrofit the roof with specialized heat-reflective material. Re-cover the roof with a new

  18. EVALUATION OF ROOF BOLTING REQUIREMENTS BASED ON IN-MINE ROOF BOLTER DRILLING

    SciTech Connect (OSTI)

    Syd S. Peng

    2001-10-15

    Roof bolting is the most popular method for underground openings in the mining industry, especially in the bedded deposits such as coal, potash, salt etc. In fact, all U.S. underground coal mine entries are roof-bolted as required by law. However, roof falls still occur frequently in the roof bolted entries. The two possible reasons are: the lack of knowledge of and technology to detect the roof geological conditions in advance of mining, and lack of roof bolting design criteria for modern roof bolting systems. This research is to develop a method for predicting the roof geology and stability condition in real time during roof bolting operation. Based on such information, roof bolting design criteria for modern roof bolting systems will be developed for implementation in real time. The retrofitting works for a dedicated roof bolter for this research has been completed. The laboratory tests performed using this machine on simulated roof blocks have been conducted. The analysis performed on the testing data showed promising signs to detect the rock interface, fractures, as well as the rock types. The other tasks were progressing as planned.

  19. Installation of Cool Roofs on Department of Energy Buildings | Department

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

    of Energy Installation of Cool Roofs on Department of Energy Buildings Installation of Cool Roofs on Department of Energy Buildings PDF icon 2010.06.01 S-1 memo, Installation of Cool Roofs on DOE Buildings.pdf More Documents & Publications Guidelines for Selecting Cool Roofs CX-002735: Categorical Exclusion Determination Impact of Solar PV Laminate Membrane Systems on Roofs

  20. Lafarge Roofing Ltd | Open Energy Information

    Open Energy Info (EERE)

    Kingdom Zip: RH4 1TG Product: Distributes and installs roofing tiles, including photovoltaic ones. Coordinates: 48.231575, -101.134114 Show Map Loading map......

  1. List of Roofs Incentives | Open Energy Information

    Open Energy Info (EERE)

    Central Air conditioners CustomOthers pending approval Heat pumps Lighting Roofs Photovoltaics Yes Electric Efficiency Standard (Indiana) Energy Efficiency Resource...

  2. Energy 101: Cool Roofs | Department of Energy

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

    Cool Roofs Energy 101: Cool Roofs January 31, 2011 - 12:38pm Addthis This edition of Energy 101 takes a look at how switching to a cool roof can save you money and benefit the environment. John Schueler John Schueler Former New Media Specialist, Office of Public Affairs How does it work? Dark-colored roofing materials absorb a great deal of sunlight, which transfers heat into a building. This can also cause the "heat island" effect in cities and suburbs, a phenomenon that produces

  3. Cool Roof Calculator | Open Energy Information

    Open Energy Info (EERE)

    TOOL Name: Cool Roof Calculator AgencyCompany Organization: Oak Ridge National Laboratory Sector: Energy Focus Area: Buildings, Energy Efficiency Resource Type: Online...

  4. Building America Case Study: Field Testing an Unvented Roof with...

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

    multiple roof ridges (both diffusion vent and unvented), hips, and roof-wall interfaces. ... Some roof-wall interfaces showed moderately high MCs; this might be because of moisture ...

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

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

    Energy-Efficient Roofs If you've ever stood on a roof on a hot summer day, you know how hot it can get. The heat from your roof makes your air conditioner work even harder to keep...

  6. Lightweight, self-ballasting photovoltaic roofing assembly

    DOE Patents [OSTI]

    Dinwoodie, T.L.

    1998-05-05

    A photovoltaic roofing assembly comprises a roofing membrane (102), a plurality of photovoltaic modules (104, 106, 108) disposed as a layer on top of the roofing membrane (102), and a plurality of pre-formed spacers, pedestals or supports (112, 114, 116, 118, 120, 122) which are respectively disposed below the plurality of photovoltaic modules (104, 106, 108) and integral therewith, or fixed thereto. Spacers (112, 114, 116, 118, 120, 122) are disposed on top of roofing membrane (102). Membrane (102) is supported on conventional roof framing, and attached thereto by conventional methods. In an alternative embodiment, the roofing assembly may have insulation block (322) below the spacers (314, 314', 315, 315'). The geometry of the preformed spacers (112, 114, 116, 118, 120, 122, 314, 314', 315, 315') is such that wind tunnel testing has shown its maximum effectiveness in reducing net forces of wind uplift on the overall assembly. Such construction results in a simple, lightweight, self-ballasting, readily assembled roofing assembly which resists the forces of wind uplift using no roofing penetrations.

  7. Lightweight, self-ballasting photovoltaic roofing assembly

    DOE Patents [OSTI]

    Dinwoodie, Thomas L.

    1998-01-01

    A photovoltaic roofing assembly comprises a roofing membrane (102), a plurality of photovoltaic modules (104, 106, 108) disposed as a layer on top of the roofing membrane (102), and a plurality of pre-formed spacers, pedestals or supports (112, 114, 116, 118, 120, 122) which are respectively disposed below the plurality of photovoltaic modules (104, 106, 108) and integral therewith, or fixed thereto. Spacers (112, 114, 116, 118, 120, 122) are disposed on top of roofing membrane (102). Membrane (102) is supported on conventional roof framing, and attached thereto by conventional methods. In an alternative embodiment, the roofing assembly may have insulation block (322) below the spacers (314, 314', 315, 315'). The geometry of the preformed spacers (112, 114, 116, 118, 120, 122, 314, 314', 315, 315') is such that wind tunnel testing has shown its maximum effectiveness in reducing net forces of wind uplift on the overall assembly. Such construction results in a simple, lightweight, self-ballasting, readily assembled roofing assembly which resists the forces of wind uplift using no roofing penetrations.

  8. Lightweight, self-ballasting photovoltaic roofing assembly

    DOE Patents [OSTI]

    Dinwoodie, Thomas L.

    2006-02-28

    A photovoltaic roofing assembly comprises a roofing membrane (102), a plurality of photovoltaic modules (104, 106, 108) disposed as a layer on top of the roofing membrane (102), and a plurality of pre-formed spacers, pedestals or supports (112, 114, 116, 118, 120, 122) which are respectively disposed below the plurality of photovoltaic modules (104, 106, 108) and integral therewith, or fixed thereto. Spacers (112, 114, 116, 118, 120, 122) are disposed on top of roofing membrane (102). Membrane (102) is supported on conventional roof framing, and attached thereto by conventional methods. In an alternative embodiment, the roofing assembly may have insulation block (322) below the spacers (314, 314', 315, 315'). The geometry of the pre-formed spacers (112, 114, 116, 118, 120, 122, 314, 314', 315, 315') is such that wind tunnel testing has shown its maximum effectiveness in reducing net forces of wind uplift on the overall assembly. Such construction results in a simple, lightweight, self-ballasting, readily assembled roofing assembly which resists the forces of wind uplift using no roofing penetrations.

  9. Reduction in the thermal resistance (R-value) of loose-fill insulation and fiberglass batts due to compression

    SciTech Connect (OSTI)

    Yarbrough, D.W.; Wright, J.H.

    1981-04-01

    A method is presented for calculating the thickness reduction of loose-fill insulations and fiberglass batts that result from compressive forces exerted by additional insulation. The thickness reduction is accompanied by an increase in density and a reduction in the R value of the compressed layer. Calculations for thermal resistance of two layers of insulation are given. Information in 4 appendices includes: identification of products tested (products from 3 companies); experimental values for thickness as a function of loading; Fortran programs and output; and calculated R values for stacked insulations. (MCW)

  10. Comparison of Software Models for Energy Savings from Cool Roofs...

    Office of Scientific and Technical Information (OSTI)

    Title: Comparison of Software Models for Energy Savings from Cool Roofs A web-based Roof ... This tool employs modern web technologies, usability design, and national average defaults ...

  11. Daylighter Daily Solar Roof Light | Open Energy Information

    Open Energy Info (EERE)

    Daylighter Daily Solar Roof Light Jump to: navigation, search Name: Daylighter Daily Solar Roof Light Address: 1991 Crocker Road, Suite 600 Place: Cleveland, Ohio Zip: 44145...

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

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

    carefully assess your property and consult a professional before deciding to install a green roof. Learn More Energy-Efficient Home Design Cool Roofs Financing Energy-Efficient...

  13. Hawaii Marine Base Installs Solar Roofs | Department of Energy

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

    Lorelei Laird Writer, Energy Empowers What does this project do? Marine Corps Base Hawaii replaced roofs on two buildings with polyvinyl chloride membrane 'cool' roofs and solar...

  14. Community-Scale Attic Retrofit and Home Energy Upgrade Data Mining

    SciTech Connect (OSTI)

    Berman, M.; Smith, P.; Jackson, J.

    2015-05-07

    The U.S. Department of Energy’s Building America research team, Alliance for Residential Building Innovation (ARBI), implemented a project to increase residential retrofits in Davis, California. The project used a neighborhood-focused strategy for implementation and a low-cost retrofit program that focused on upgraded attic insulation and duct sealing. ARBI worked with a community partner, the not-for-profit Cool Davis Initiative, as well as selected area contractors to implement a strategy that sought to capitalize on the strong local expertise of partners and the unique aspects of the Davis, California, community. Working with community partners also allowed ARBI to collect and analyze data about effective messaging tactics for community-based retrofit programs.

  15. Community-Scale Attic Retrofit and Home Energy Upgrade Data Mining

    SciTech Connect (OSTI)

    Berman, M.; Smith, P.; Jackson, J.

    2015-05-01

    Residential retrofit is an essential element of any comprehensive strategy for improving residential energy efficiency, yet remains a challenging proposition to sell to homeowners due to low levels of awareness and lack of financial incentive. The Alliance for Residential Building Innovation (ARBI) implemented a project to increase residential retrofits in Davis, CA called Retrofit Your Attic developed and appropriate data sets were uploaded to the Building America Field Data Repository (BAFDR). Two key conclusions are a broad based public awareness campaign is needed to increase understanding of the makeup and benefits of residential retrofits and a dramatic shift is needed so that efficient homes are appraised and valued at higher levels. The SAVE Act, proposed bipartisan federal legislation [S.1106], offers one way to accomplish this.

  16. Accelerated Aging of Roofing Materials - 2013 BTO Peer Review | Department

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

    of Energy Materials - 2013 BTO Peer Review Accelerated Aging of Roofing Materials - 2013 BTO Peer Review Emerging Technologies Project for the 2013 Building Technologies Office's Program Peer Review PDF icon emrgtech24_destaillats_040413.pdf More Documents & Publications Accelerated Aging of Roofing Materials Stay-Clean and Durable White Elastomeric Roof Coatings New Cool Roof Coatings and Affordable Cool Color Asphalt

  17. SolarRoofs com | Open Energy Information

    Open Energy Info (EERE)

    95608 Sector: Solar Product: California-based manufacturer of the patented Skyline solar water heating systems. References: SolarRoofs.com1 This article is a stub. You can help...

  18. Cool Roofs | Y-12 National Security Complex

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

    has been estimated to have the potential to offset the carbon emissions of 300 million automobiles." Y-12 began installing cool roofs in 2008, which was well before Secretary of...

  19. Fourier analysis of conductive heat transfer for glazed roofing materials

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Fourier analysis of conductive heat transfer for glazed roofing materials Citation Details In-Document Search Title: Fourier analysis of conductive heat transfer for glazed roofing materials For low-rise buildings, roof is the most exposed surface to solar radiation. The main mode of heat transfer from outdoor via the roof is conduction. The rate of heat transfer and the thermal impact is dependent on the thermophysical properties of roofing materials.

  20. Cool Roofs: An Easy Upgrade | Department of Energy

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

    Roofs: An Easy Upgrade Cool Roofs: An Easy Upgrade December 14, 2010 - 9:25am Addthis Cathy Zoi Former Assistant Secretary, Office of Energy Efficiency & Renewable Energy What does this mean for me? Dark roofs can be 50 degrees hotter than light roofs. Combined with dark roads and parking lots, dark roofs lead to the 'urban heat island' effect: cities tend to be 2-5 degrees hotter. A cooler roof means energy bills that are up to 10-15% lower because your air conditioner doesn't have to work

  1. Performance of powder-filled evacuated panel insulation in a manufactured home roof cavity: Tests in the Large Scale Climate Simulator

    SciTech Connect (OSTI)

    Petrie, T.W.; Kosny, J.; Childs, P.W.

    1996-03-01

    A full-scale section of half the top of a single-wide manufactured home has been studied in the Large Scale Climate Simulator (LSCS) at the Oak Ridge National Laboratory. A small roof cavity with little room for insulation at the eaves is often the case with single-wide units and limits practical ways to improve thermal performance. The purpose of the current tests was to obtain steady-state performance data for the roof cavity of the manufactured home test section when the roof cavity was insulated with fiberglass batts, blown-in rock wool insulation or combinations of these insulations and powder-filled evacuated panel (PEP) insulation. Four insulation configurations were tested: (A) a configuration with two layers of nominal R{sub US}-7 h {center_dot} ft{sup 2} {center_dot} F/BTU (R{sub SI}-1.2 m{sup 2} {center_dot} K/W) fiberglass batts; (B) a layer of PEPs and one layer of the fiberglass batts; (C) four layers of the fiberglass batts; and (D) an average 4.1 in. (10.4 cm) thick layer of blown-in rock wool at an average density of 2.4 lb/ft{sup 3} (38 kg/m{sup 3}). Effects of additional sheathing were determined for Configurations B and C. With Configuration D over the ceiling, two layers of expanded polystyrene (EPS) boards, each about the same thickness as the PEPs, were installed over the trusses instead of the roof. Aluminum foils facing the attic and over the top layer of EPS were added. The top layer of EPS was then replaced by PEPs.

  2. Indirect Benefits (Increased Roof Life and HVAC Savings) from...

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

    Indirect Benefits (Increased Roof Life and HVAC Savings) from a Solar PV System at the San Jos Convention Center Indirect Benefits (Increased Roof Life and HVAC Savings) from a ...

  3. MSR Innovations Modular Solar Roofing | Open Energy Information

    Open Energy Info (EERE)

    search Name: MSR Innovations (Modular Solar Roofing) Place: Burnaby, British Columbia, Canada Zip: V5J 5H8 Product: British Columbia-based PV roofing systems maker. Coordinates:...

  4. Solar Domestic Water Heating: a Roof-Integrated Evaluation

    SciTech Connect (OSTI)

    2009-09-03

    This fact sheet describes an evaluation of the performance of a roof-integrated solar water heating system.

  5. NNSA Commitment to Energy Efficiency: Promoting Cool Roof Technologies |

    National Nuclear Security Administration (NNSA)

    National Nuclear Security Administration NNSA Commitment to Energy Efficiency: Promoting Cool Roof Technologies July 19, 2010 U.S. Department of Energy Secretary Steven Chu today announced a series of initiatives underway at the Department of Energy to more broadly implement cool roof technologies on DOE facilities and buildings across the federal government. Cool roofs use lighter-colored roofing surfaces or special coatings to reflect more of the sun's heat, helping improve building

  6. Thrust bolting: roof bolt support apparatus

    DOE Patents [OSTI]

    Tadolini, Stephen C.; Dolinar, Dennis R.

    1992-01-01

    A method of installing a tensioned roof bolt in a borehole of a rock formation without the aid of a mechanical anchoring device or threaded tensioning threads by applying thrust to the bolt (19) as the bonding material (7') is curing to compress the strata (3) surrounding the borehole (1), and then relieving the thrust when the bonding material (7') has cured.

  7. Covered Product Category: Cool Roof Products

    Broader source: Energy.gov [DOE]

    FEMP provides acquisition guidance across a variety of product categories, including cool roof products, which are an ENERGY STAR®-qualified product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

  8. Evolution of cool-roof standards in the United States

    SciTech Connect (OSTI)

    Akbari, Hashem; Akbari, Hashem; Levinson, Ronnen

    2008-07-11

    Roofs that have high solar reflectance and high thermal emittance stay cool in the sun. A roof with lower thermal emittance but exceptionally high solar reflectance can also stay cool in the sun. Substituting a cool roof for a noncool roof decreases cooling-electricity use, cooling-power demand, and cooling-equipment capacity requirements, while slightly increasing heating-energy consumption. Cool roofs can also lower citywide ambient air temperature in summer, slowing ozone formation and increasing human comfort. Provisions for cool roofs in energy-efficiency standards can promote the building- and climate-appropriate use of cool roofing technologies. Cool-roof requirements are designed to reduce building energy use, while energy-neutral cool-roof credits permit the use of less energy-efficient components (e.g., larger windows) in a building that has energy-saving cool roofs. Both types of measures can reduce the life-cycle cost of a building (initial cost plus lifetime energy cost). Since 1999, several widely used building energy-efficiency standards, including ASHRAE 90.1, ASHRAE 90.2, the International Energy Conservation Code, and California's Title 24 have adopted cool-roof credits or requirements. This paper reviews the technical development of cool-roof provisions in the ASHRAE 90.1, ASHRAE 90.2, and California Title 24 standards, and discusses the treatment of cool roofs in other standards and energy-efficiency programs. The techniques used to develop the ASHRAE and Title 24 cool-roof provisions can be used as models to address cool roofs in building energy-efficiency standards worldwide.

  9. Status of cool roof standards in the United States

    SciTech Connect (OSTI)

    Akbari, Hashem; Levinson, Ronnen

    2007-06-01

    Since 1999, several widely used building energy efficiency standards, including ASHRAE 90.1, ASHRAE 90.2, the International Energy Conservation Code, and California's Title 24 have adopted cool roof credits or requirements. We review the technical development of cool roof provisions in the ASHRAE 90.1, ASHRAE 90.2, and California Title 24 standards, and discuss the treatment of cool roofs in other standards and energy-efficiency programs. The techniques used to develop the ASHRAE and Title 24 cool roof provisions can be used as models to address cool roofs in building energy standards worldwide.

  10. Flourescent Pigments for High-Performance Cool Roofing and Facades |

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

    Department of Energy Flourescent Pigments for High-Performance Cool Roofing and Facades Flourescent Pigments for High-Performance Cool Roofing and Facades Addthis 1 of 3 PPG Industries and Lawrence Berkeley National Laboratory are partnering to develop a new class of dark-colored pigments for cool metal roof and façade coatings that incorporate near-infrared fluorescence and reflectance to improve energy performance. Image: PPG Industries 2 of 3 Berkeley Lab Heat Island Group physicist Paul

  11. Improving Our Environment One Roof at a Time

    Broader source: Energy.gov [DOE]

    Known by a variety of names, green roofs – which are built on top of a conventional roof and are partially or completely covered by vegetation – have been around for thousands of years and are popular in many European countries. Scientists at the Department of Energy’s National Energy Technology Laboratory are using green roofs as laboratories to investigate alternative growth media for plants that make use of waste materials generated by the fossil fuel industry.

  12. Accelerated Aging of Roofing Materials | Department of Energy

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

    Materials Accelerated Aging of Roofing Materials 1 of 2 Berkeley Lab Heat Island Group chemist Mohamad Sleiman prepares to insert clean and soiled roofing specimens into a weatherometer. The weatherometer simulates exposure to heat, moisture, and UV radiation. Image: Heat Island Group, Lawrence Berkeley National Laboratory 2 of 2 Berkeley Lab Heat Island Group chemist Mohamad Sleiman configures a weatherometer to simulate the effects of heat, moisture, and UV radiation on roofing materials.

  13. Fluorescent Pigments for High-Performance Cool Roofing and Facades |

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

    Department of Energy Fluorescent Pigments for High-Performance Cool Roofing and Facades Fluorescent Pigments for High-Performance Cool Roofing and Facades 1 of 3 PPG Industries and Lawrence Berkeley National Laboratory are partnering to develop a new class of dark-colored pigments for cool metal roof and façade coatings that incorporate near-infrared fluorescence and reflectance to improve energy performance. Image: PPG Industries 2 of 3 Berkeley Lab Heat Island Group physicist Paul Berdahl

  14. Energy Department Completes Cool Roof Installation on DC Headquarters

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

    Building to Save Money by Saving Energy | Department of Energy Completes Cool Roof Installation on DC Headquarters Building to Save Money by Saving Energy Energy Department Completes Cool Roof Installation on DC Headquarters Building to Save Money by Saving Energy December 14, 2010 - 12:00am Addthis Washington - Secretary Steven Chu today announced the completion of a new cool roof installation on the Department of Energy's Headquarters West Building. There was no incremental cost to adding

  15. A Cool Roof for the Iconic Cyclotron | Department of Energy

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

    A Cool Roof for the Iconic Cyclotron A Cool Roof for the Iconic Cyclotron July 15, 2011 - 5:42pm Addthis Berkeley Lab's iconic building, the Advanced Light Source, is getting a new cool roof, righ, that will reflect sunlight back into the atmosphere, playing a small part in mitigating global warming. On left, Ernest Orlando Lawrence talks to colleagues at the construction site of the cyclotron, built in 1941. | Courtesy of Lawrence Berkeley National Laboratory; Roy Kaltschmidt, Berkeley Lab

  16. Accelerated Aging of Roofing Materials | Department of Energy

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

    Accelerated Aging of Roofing Materials Accelerated Aging of Roofing Materials Addthis 1 of 2 Berkeley Lab Heat Island Group chemist Mohamad Sleiman prepares to insert clean and soiled roofing specimens into a weatherometer. The weatherometer simulates exposure to heat, moisture, and UV radiation. Image: Heat Island Group, Lawrence Berkeley National Laboratory 2 of 2 Berkeley Lab Heat Island Group chemist Mohamad Sleiman configures a weatherometer to simulate the effects of heat, moisture, and UV

  17. Secretary Chu Announces Steps to Implement Cool Roofs at DOE...

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

    ... Learn more information on the LBNL study. DOE is also expanding its research activity for cool roofs to enable technological innovation and guide policy implementation. The ...

  18. Cool roofs as an energy conservation measure for federal buildings

    SciTech Connect (OSTI)

    Taha, Haider; Akbari, Hashem

    2003-04-07

    We have developed initial estimates of the potential benefits of cool roofs on federal buildings and facilities (building scale) as well as extrapolated the results to all national facilities under the administration of the Federal Energy Management Program (FEMP). In addition, a spreadsheet ''calculator'' is devised to help FEMP estimate potential energy and cost savings of cool roof projects. Based on calculations for an average insulation level of R-11 for roofs, it is estimated that nationwide annual savings in energy costs will amount to $16M and $32M for two scenarios of increased roof albedo (moderate and high increases), respectively. These savings, corresponding to about 3.8 percent and 7.5 percent of the base energy costs for FEMP facilities, include the increased heating energy use (penalties) in winter. To keep the cost of conserved energy (CCE) under $0.08 kWh-1 as a nationwide average, the calculations suggest that the incremental cost for cool roofs should not exceed $0.06 ft-2, assuming that cool roofs have the same life span as their non-cool counterparts. However, cool roofs usually have extended life spans, e.g., 15-30 years versus 10 years for conventional roofs, and if the costs of re-roofing are also factored in, the cutoff incremental cost to keep CCE under $0.08 kWh-1 can be much higher. In between these two ends, there is of course a range of various combinations and options.

  19. Building America Case Study: Field Testing an Unvented Roof with...

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

    Building Science Corporation devised an experiment to build and instrument unvented test ... The roof was disassembled at the end of the experiment (top image) to correlate ...

  20. Stay-Clean and Durable White Elastomeric Roof Coatings | Department...

    Energy Savers [EERE]

    Stay-Clean and Durable White Elastomeric Roof Coatings Lead Performer: Lawrence Berkeley National Laboratory - Berkeley, CA Partner: Dow Chemical - Midland, MI DOE Funding: ...

  1. Cool Roofs and Heat Islands | Open Energy Information

    Open Energy Info (EERE)

    Tool Summary LAUNCH TOOL Name: Cool Roofs AgencyCompany Organization: Lawrence Berkeley National Laboratory Sector: Energy Focus Area: Energy Efficiency Topics: Resource...

  2. Status of cool roof standards in the United States (Conference...

    Office of Scientific and Technical Information (OSTI)

    Since 1999, several widely used building energy efficiency standards, including ASHRAE ... and discuss the treatment of cool roofs in other standards and energy-efficiency programs. ...

  3. Comparison of software models for energy savings from cool roofs...

    Office of Scientific and Technical Information (OSTI)

    Comparison of software models for energy savings from cool roofs Citation Details In-Document Search This content will become publicly available on September 4, 2017 Title: ...

  4. Secretary Chu Announces Steps to Implement Cool Roofs at DOE...

    National Nuclear Security Administration (NNSA)

    coatings to reflect more of the sun's heat, helping improve building efficiency by ... urban areas. Because they absorb so much heat, dark-colored roofs and roadways create ...

  5. Developing Energy Efficient Roof Systems DEERS | Open Energy...

    Open Energy Info (EERE)

    (DEERS) Place: Ripon, California Zip: 95366 Sector: Solar Product: Developer of roof top solar PV projects. Coordinates: 43.84582, -88.837054 Show Map Loading map......

  6. New “Cool Roof Time Machine” Will Accelerate Cool Roof Deployment

    Broader source: Energy.gov [DOE]

    A collaboration led by scientists at Lawrence Berkeley National Laboratory (Berkeley Lab) has established a method to simulate soiling and weathering processes in the lab, reproducing in only a few days the solar reflectance of roofing products naturally aged for three years.

  7. High Efficiency Solar Integrated Roof Membrane Product

    SciTech Connect (OSTI)

    Partyka, Eric; Shenoy, Anil

    2013-05-15

    This project was designed to address the Solar Energy Technology Program objective, to develop new methods to integrate photovoltaic (PV) cells or modules within a building-integrated photovoltaic (BIPV) application that will result in lower installed cost as well as higher efficiencies of the encapsulated/embedded PV module. The technology assessment and development focused on the evaluation and identification of manufacturing technologies and equipment capable of producing such low-cost, high-efficiency, flexible BIPV solar cells on single-ply roofing membranes.

  8. Estimating Heat and Mass Transfer Processes in Green Roof Systems: Current Modeling Capabilities and Limitations (Presentation)

    SciTech Connect (OSTI)

    Tabares Velasco, P. C.

    2011-04-01

    This presentation discusses estimating heat and mass transfer processes in green roof systems: current modeling capabilities and limitations. Green roofs are 'specialized roofing systems that support vegetation growth on rooftops.'

  9. DOE Science Showcase - Cool roofs, cool research, at DOE | OSTI, US Dept of

    Office of Scientific and Technical Information (OSTI)

    Energy, Office of Scientific and Technical Information Cool roofs, cool research, at DOE Science Accelerator returns cool roof documents from 6 DOE Databases Executive Order on Sustainability Secretary Chu Announces Steps to Implement One Cool Roof Cool Roofs Lead to Cooler Cities Guidelines for Selecting Cool Roofs DOE Cool Roof Calculator Visit the Science Showcase homepage. Last updated on Wednesday 12 February 2014

  10. Hygrothermal Performance of West Coast Wood Deck Roofing System

    SciTech Connect (OSTI)

    Pallin, Simon B; Kehrer, Manfred; Desjarlais, Andre Omer

    2014-02-01

    Simulations of roofing assemblies are necessary in order to understand and adequately predict actual the hygrothermal performance. At the request of GAF, simulations have been setup to verify the difference in performance between white and black roofing membrane colors in relation to critical moisture accumulation for traditional low slope wood deck roofing systems typically deployed in various western U.S. Climate Zones. The performance of these roof assemblies has been simulated in the hygrothermal calculation tool of WUFI, from which the result was evaluated based on a defined criterion for moisture safety. The criterion was defined as the maximum accepted water content for wood materials and the highest acceptable moisture accumulation rate in relation to the risk of rot. Based on the criterion, the roof assemblies were certified as being either safe, risky or assumed to fail. The roof assemblies were simulated in different western climates, with varying insulation thicknesses, two different types of wooden decking, applied with varying interior moisture load and with either a high or low solar absorptivity at the roof surface (black or white surface color). The results show that the performance of the studied roof assemblies differs with regard to all of the varying parameters, especially the climate and the indoor moisture load.

  11. Fourier analysis of conductive heat transfer for glazed roofing materials

    SciTech Connect (OSTI)

    Roslan, Nurhana Lyana; Bahaman, Nurfaradila; Almanan, Raja Noorliyana Raja; Ismail, Razidah; Zakaria, Nor Zaini

    2014-07-10

    For low-rise buildings, roof is the most exposed surface to solar radiation. The main mode of heat transfer from outdoor via the roof is conduction. The rate of heat transfer and the thermal impact is dependent on the thermophysical properties of roofing materials. Thus, it is important to analyze the heat distribution for the various types of roofing materials. The objectives of this paper are to obtain the Fourier series for the conductive heat transfer for two types of glazed roofing materials, namely polycarbonate and polyfilled, and also to determine the relationship between the ambient temperature and the conductive heat transfer for these materials. Ambient and surface temperature data were collected from an empirical field investigation in the campus of Universiti Teknologi MARA Shah Alam. The roofing materials were installed on free-standing structures in natural ventilation. Since the temperature data are generally periodic, Fourier series and numerical harmonic analysis are applied. Based on the 24-point harmonic analysis, the eleventh order harmonics is found to generate an adequate Fourier series expansion for both glazed roofing materials. In addition, there exists a linear relationship between the ambient temperature and the conductive heat transfer for both glazed roofing materials. Based on the gradient of the graphs, lower heat transfer is indicated through polyfilled. Thus polyfilled would have a lower thermal impact compared to polycarbonate.

  12. Cool Roofs Through Time and Space (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    COOL ROOF; ALBEDO; METAL; BLACK CARBON; WEATHEROMETER; SOILING APPARATUS; REFLECTION; ROOF ALBEDO Word Cloud More Like This Multimedia File size NAView Multimedia View Multimedia

  13. DOE's Oak Ridge and Lawrence Berkeley National Labs Join with Dow Chemical to Develop Next-Generation Cool Roofs

    Broader source: Energy.gov [DOE]

    Research will Lead to Improved Efficiency for Cool Roofs and Increase Cool Roof Energy Savings by Over 50 Percent

  14. Experimental study of thermal resistance values (R-values) of low-density mineral-fiber building insulation batts commercially available in 1977

    SciTech Connect (OSTI)

    Tye, R.P.; Desjarlais, A.O.; Yarbrough, D.W.; McElroy, D.L.

    1980-04-01

    This study was initiated in June 1977 to obtain and evaluate full-thickness thermal performance data on mineral fiber, i.e., fiberglass and rock wool, batt-type insulations. The study aimed to obtain full-thickness thermal performance data and to assess other properties of mineral fiber building insulations. The physical property measurements discussed in this report provide a measure of the range of values for density, thickness, and R-value based on a sampling of low-density mineral-fiber building insulation batts purchased in the marketplace in 1977. The experimental data were used to establish mean R-values at nominal (label) thickness of R-11 and R-19 fiberglass batts and R-11 rock wool batts. The full-thickness and sliced testing techniques provided a set of R-values on the purchased samples that were converted to R-values at label thickness by using a particular correlation of apparent thermal conductivity and density. The full thickness results indicate surprisingly large percentages below labeled R-value for these four types of mineral fiber insulation. A statistical analysis of these data based on the assumption of normally distributed properties is included. This yielded estimates of similar magnitude for the population from which the samples were purchased. An urgency for continued sampling and further testing of mineral fiber insulations by many laboratories was identified. The differences between results obtained with the sliced technique and results obtained with full-thickness testing must be thoroughly understood and documented so that adjustment factors for the thickness effect can be accurately established. (LCL)

  15. Inverted Attic Bulkhead for HVAC Ductwork, Roseville, California (Fact Sheet), Building America Case Study: Whole-House Solutions for Existing Homes, Building Technologies Office (BTO)

    Energy Savers [EERE]

    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

  16. Energy Savings and Peak Demand Reduction of a SEER 21 Heat Pump vs. a SEER 13 Heat Pump with Attic and Indoor Duct Systems

    SciTech Connect (OSTI)

    Cummings, J.

    2014-03-01

    This report describes results of experiments that were conducted in an unoccupied 1600 square foot house--the Manufactured Housing (MH Lab) at the Florida Solar Energy Center (FSEC)--to evaluate the delivered performance as well as the relative performance of a SEER 21 variable capacity heat pump versus a SEER 13 heat pump. The performance was evaluated with two different duct systems: a standard attic duct system and an indoor duct system located in a dropped-ceiling space.

  17. Flexible shaft and roof drilling system

    DOE Patents [OSTI]

    Blanz, John H.

    1981-01-01

    A system for drilling holes in the roof of a mine has a flexible shaft with a pair of oppositely wound, coaxial flat bands. One of the flat bands defines an inner spring that is wound right handed into a helical configuration, adjacent convolutions being in nesting relationship to one another. The other flat band defines an outer spring that is wound left handed into a helical configuration about the inner band, adjacent convolutions being nesting relationship with one another. A transition member that is configured to hold a rock bit is mounted to one end of the flexible shaft. When torque and thrust are applied to the flexible shaft by a driver, the inner spring expands outwardly and the outer spring contracts inwardly to form a relatively rigid shaft.

  18. Cool Roofs: Your Questions Answered | Department of Energy

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

    Roofs: Your Questions Answered Cool Roofs: Your Questions Answered January 6, 2011 - 2:58pm Addthis John Schueler John Schueler Former New Media Specialist, Office of Public Affairs Last month Secretary Chu announced that the Department of Energy had installed a "cool roof" atop the west building of our Washington, DC headquarters. The announcement elicited a fair number of questions from his Facebook fans, so we decided to reach out to the people behind the project for their insight

  19. Weathering of Roofing Materials-An Overview (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    Weathering of Roofing Materials-An Overview Citation Details In-Document ... Publication Date: 2006-03-30 OSTI Identifier: 929480 Report Number(s): LBNL--59724 Journal ID: CBUMEZ; ...

  20. Energy Department Completes Cool Roof Installation on DC Headquarters...

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

    today a video with Secretary Chu that shows the installation of the roof and explains some of the benefits that come with this important technology. The video is available ...

  1. Energy Saving "Cool Roofs" Installed at Y-12 | National Nuclear...

    National Nuclear Security Administration (NNSA)

    Energy Saving "Cool Roofs" Installed at Y-12 October 17, 2012 The Y-12 National Security Complex has taken additional steps to reduce its energy costs by installing almost 100,000 ...

  2. Energy Department Completes Cool Roof Installation on DC Headquarters...

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

    replacement project and it will save taxpayers 2,000 every year in building energy costs. ... As a result of the new cool roof installations on both buildings, taxpayers will save a ...

  3. Repairing Roofs and Ceilings: How To's for the Handy Homeowner

    SciTech Connect (OSTI)

    2006-01-01

    This brochure provides handy homeowners with tips on how to properly repair roofs and ceilings in their homes that sustained damage during a hurricane. This publications is a part of the How To's for the Handy Homeowner Series.

  4. Secretary Chu Announces Steps to Implement Cool Roofs at DOE...

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

    395 Kb . Cool roofs are one of the quickest and lowest cost ways we can reduce our global carbon emissions and begin the hard work of slowing climate change, said Secretary...

  5. Inclusion of cool roofs in nonresidential Title 24 prescriptive requirements

    SciTech Connect (OSTI)

    Levinson, Ronnen; Akbari, Hashem; Konopacki, Steve; Bretz, Sarah

    2002-12-15

    Roofs that have high solar reflectance (high ability to reflect sunlight) and high thermal emittance (high ability to radiate heat) tend to stay cool in the sun. The same is true of low-emittance roofs with exceptionally high solar reflectance. Substituting a cool roof for a noncool roof tends to decrease cooling electricity use, cooling power demand, and cooling-equipment capacity requirements, while slightly increasing heating energy consumption. Cool roofs can also lower the ambient air temperature in summer, slowing ozone formation and increasing human comfort. DOE-2.1E building energy simulations indicate that use of a cool roofing material on a prototypical California nonresidential building with a low-sloped roof yields average annual cooling energy savings of approximately 300 kWh/1000 ft2 [3.2 kWh/m2], average annual natural gas deficits of 4.9 therm/1000 ft2 [5.6 MJ/m2], average source energy savings of 2.6 MBTU/1000 ft2 [30 MJ/m2], and average peak power demand savings of 0. 19 kW/1000 ft2 [2.1 W/m2]. The 15-year net present value (NPV) of energy savings averages $450/1000 ft2 [$4.90/m2] with time dependent valuation (TDV), and $370/1000 ft2 [$4.00/m2] without TDV. When cost savings from downsizing cooling equipment are included, the average total savings (15-year NPV + equipment savings) rises to $550/1000 ft2 [$5.90/m2] with TDV, and to $470/1000 ft2 [$5.00/m2] without TDV. Total savings range from 0.18 to 0.77 $/ft2 [1.90 to 8.30 $/m2] with TDV, and from 0.16 to 0.66 $/ft2 [1.70 to 7.10 $/m2] without TDV, across California's 16 climate zones. The typical cost premium for a cool roof is 0.00 to 0.20 $/ft2 [0.00 to 2.20 $/m2]. Cool roofs with premiums up to $0.20/ft2 [$2.20/m2] are expected to be cost effective in climate zones 2 through 16; those with premiums not exceeding $0.18/ft2 [$1.90/m2] are expected to be also cost effective in climate zone 1. Hence, this study recommends that the year-2005 California building energy efficiency code (Title 24, Pa rt 6 of the California Code of Regulations) for nonresidential buildings with low-sloped roofs include a cool-roof prescriptive requirement in all California climate zones. Buildings with roofs that do not meet prescriptive requirements may comply with the code via an ''overall-envelope'' approach (non-metal roofs only), or via a performance approach (all roof types).

  6. Empirically Derived Strength of Residential Roof Structures for Solar Installations.

    SciTech Connect (OSTI)

    Dwyer, Stephen F.; Sanchez, Alfred; Campos, Ivan A.; Gerstle, Walter H.

    2014-12-01

    Engineering certification for the installation of solar photovoltaic (PV) modules on wood roofs is often denied because existing wood roofs do not meet structural design codes. This work is intended to show that many roofs are actually sufficiently strong given the conservatism in codes, documented allowable strengths, roof structure system effects, and beam composite action produced by joist-sheathing interaction. This report provides results from a testing program to provide actual load carrying capacity of residential rooftops. The results reveal that the actual load carrying capacity of structural members and systems tested are significantly stronger than allowable loads provided by the International Residential Code (IRC 2009) and the national structural code found in Minimum Design Loads for Buildings and Other Structures (ASCE 7-10). Engineering analysis of residential rooftops typically ignores the system affects and beam composite action in determining rooftop stresses given a potential PV installation. This extreme conservatism combined with conservatism in codes and published allowable stress values for roof building materials (NDS 2012) lead to the perception that well built homes may not have adequate load bearing capacity to enable a rooftop PV installation. However, based on the test results presented in this report of residential rooftop structural systems, the actual load bearing capacity is several times higher than published values (NDS 2012).

  7. Solare Cell Roof Tile And Method Of Forming Same

    DOE Patents [OSTI]

    Hanoka, Jack I. (Brookline, MA); Real, Markus (Oberberg, CH)

    1999-11-16

    A solar cell roof tile includes a front support layer, a transparent encapsulant layer, a plurality of interconnected solar cells and a backskin layer. The front support layer is formed of light transmitting material and has first and second surfaces. The transparent encapsulant layer is disposed adjacent the second surface of the front support layer. The interconnected solar cells has a first surface disposed adjacent the transparent encapsulant layer. The backskin layer has a first surface disposed adjacent a second surface of the interconnected solar cells, wherein a portion of the backskin layer wraps around and contacts the first surface of the front support layer to form the border region. A portion of the border region has an extended width. The solar cell roof tile may have stand-offs disposed on the extended width border region for providing vertical spacing with respect to an adjacent solar cell roof tile.

  8. Fluorescent Pigments for High-Performance Cool Roofing

    Energy Savers [EERE]

    Fluorescent Pigments for High-Performance Cool Roofing 2015 Building Technologies Office Peer Review Michael Zalich, Ph.D. Paul Berdahl, Ph.D. mzalich@ppg.com phberdahl@lbl.gov PPG Industries, Inc. LBNL Project Summary Timeline: Start date: October 1, 2013 Planned end date: September 30, 2015 Key Milestones 1. Additional Pigments Identified, End Q2 and Q6 2. 500g of 2 New Pigments, End Q3 and Q7 3. ESR Measured on New Cool Roof Coating, End Q4 and Q8 4. Potential Manufacturing Partner, Q3 and

  9. Cool Roofs Through Time and Space (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Conference: Cool Roofs Through Time and Space Citation Details In-Document Search Title: Cool Roofs Through Time and Space You are accessing a document from the Department of ...

  10. You Don't Need to Raise the Roof: Cutting Solar Permitting Costs...

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

    You Don't Need to Raise the Roof: Cutting Solar Permitting Costs for Wooden Rooftops You Don't Need to Raise the Roof: Cutting Solar Permitting Costs for Wooden Rooftops June 17, ...

  11. Thermal performance of a Concrete Cool Roof under different climatic conditions of Mexico

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

    Hernández-Pérez, I.; Álvarez, G.; Gilbert, H.; Xamán, J.; Chávez, Y.; Shah, B.

    2014-11-27

    A cool roof is an ordinary roof with a reflective coating on the exterior surface which has a high solar reflectance and high thermal emittance. These properties let the roof keep a lower temperature than a standard roof under the same conditions. In this work, the thermal performance of a concrete roof with and without insulation and with two colors has been analyzed using the finite volume method. The boundary conditions of the external roof surface were taken from hourly averaged climatic data of four cities. For the internal surface, it is considered that the building is air-conditioned and themore » inside air has a constant temperature. The interior surface temperature and the heat flux rates into the roofs were obtained for two consecutive days in order to assess the benefits of a cool roofs in different climates.« less

  12. Load test of the 272W Building high bay roof deck and support structure

    SciTech Connect (OSTI)

    McCoy, R.M.

    1994-09-28

    This reports the results of the Load Test of the 272W Building High Bay Roof Deck and Support Structure.

  13. New Cool Roof Coatings and Affordable Cool Color Asphalt | Department of

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

    Energy Cool Roof Coatings and Affordable Cool Color Asphalt New Cool Roof Coatings and Affordable Cool Color Asphalt Emerging Technologies Project for the 2013 Building Technologies Office's Program Peer Review PDF icon emrgtech25_cheng_040413.pdf More Documents & Publications Accelerated Aging of Roofing Materials - 2013 BTO Peer Review Berkeley Lab Heat Island Group research assistant Sharon Chen prepares a prototype of high-performance cool shingle roofing. Credit: Heat Island Group,

  14. Buildings Energy Data Book: 3.6 Office Building Markets and Companies

    Buildings Energy Data Book [EERE]

    7 Advanced Energy Design Guide for Small Office Buildings (1) Shell Percent Glass (WWR) 20-40% Window U-Factor 0.33-0.56 SHGC 0.31-0.49 Wall R-Value 7.6-15.2 Roof R-Value Attic 30-60 Insulation Above Deck 15-30 Wall Material Mass (HC > 7 Btu/ft^2) Lighting Average Power Density (Watts/SF) 0.9 System and Plant System and Plant Packaged Single-Zone Packaged Single-Zone w/ Economizer Cooling Capacity > 54 kBtu Heating Plant: Gas Furnace 80% Combustion Efficiency Cooling Plant: Air conditioner

  15. Buildings Energy Data Book: 3.9 Educational Facilities

    Buildings Energy Data Book [EERE]

    8 Advanced Energy Design Guide for Typical Educational Facilities (1) Shell Percent Glass Maximum 35% Window U-Factor 0.33 - 0.56 Wall R-Value 5.7 - 15.2 Roof R-Value Attic 30.0 - 60.0 Insulation Above Deck 25.0 Wall Material Mass: Heat Capacity > 7 Btu/SF*F Lighting Average Power Density(Watts/ft.^2) With Daylighting 1.2 Without Daylighting 0.9 - 1.1 System and Plant System and Plant 1 Central System Packaged Multi-Zone w/ Economizer Comply with ASHRAE 90.1 Heating Plant: Gas Boiler 80-85

  16. Load test of the 277W Building high bay roof deck and support structure

    SciTech Connect (OSTI)

    McCoy, R.M.

    1994-12-02

    The 277W Building high bay roof area was load tested according to the approved load-test procedure, WHC-SD-GN-TP-30015, Revision 1. The 277W Building is located in the 200 West Area of the Hanford Site and has the following characteristics: roof deck -- wood decking supported by 4 x 14 timber purlins; roof membrane -- tar and gravel; roof slope -- flat (<10 deg); and roof elevation -- maximum height of about 63 ft. The 227W Building was visited in March 1994 for a visual inspection. During this inspection, cracked areas were visible in the decking, but it was not possible to determine whether these cracks extended completely through the decking, which is 2-in. thick. The building was revisited in March 1994 for the purpose of writing this test report. Because the roof requires personnel access, a test was determined to be the best way to qualify the roof. The conclusions are that the roof has been qualified for 500-lb total roof load and that the ``No Roof Access`` signs can be changed to ``Roof Access Restricted`` signs.

  17. Load test of the 3701U Building roof deck and support structure

    SciTech Connect (OSTI)

    McCoy, R.M.

    1994-09-14

    The 3701U Building roof area was load tested according to the approved load-test procedure. The 3701U Building is located in the 300 Area of the Hanford Site and has the following characteristics: Roof deck--metal decking supported by steel purlins; Roof membrane--tar and gravel; Roof slope--flat (<10 deg); and Roof elevation--height of about 12.5 ft. The 3701U Building was visited in August 1992 for a visual inspection, but because of insulation an inspection could not be performed. The building was revisited in March 1994 for the purpose of writing this test report. Because the roof could not be inspected, a test was determined to be the best way to qualify the roof for personnel access. The test procedure called for the use of a remotely-controlled robot. The conclusions are that the roof has been qualified for 500-lb total roof load and that the ``No Roof Access`` signs can be changed to ``Roof Access Restricted`` signs.

  18. Load test of the 283W Clearwell Roof Deck and Support Structure

    SciTech Connect (OSTI)

    McCoy, R.M.

    1994-09-12

    The 283W Clearwell roof area was load tested according to the approved load-test procedure, WHC-SD-GN-TP-30015, Revision 0, as modified below. The 283W Clearwell is located in the 200 West Area of the Hanford Site and has the following characteristics: Roof deck - concrete slab supported by columns and walls; Roof membrane - tar and gravel; Roof slope - flat (< 10 deg); and Roof elevation - approximately 6 in. above ground level. The 283W Clearwell was visited in April 1993 for a visual inspection, but could not be inspected because of the confined space requirements. It was revisited in February 1994 for the purpose of writing this test report. Because the roof could not be inspected, a test was determined to be the best way to qualify the roof for personnel access.

  19. Structural testing of corrugated asbestos-cement roof panels at the Hanford Facilities, Richland, Washington

    SciTech Connect (OSTI)

    Moustafa, S.E.; Rodehaver, S.M.; Frier, W.A.

    1993-10-01

    This report describes a roof testing program that was carried out at the 105KE/KW Spent Fuel Storage Basins and their surrounding facilities at the Hanford Site in Richland, Washington. The roof panels were constructed in the mid 1950`s of corrugated asbestos-cement (A/C), which showed common signs of aging. Based on the construction specifications, the panels capacity to meet current design standards was questioned. Both laboratory and in-situ load testing of the corrugated A/C panels was conducted. The objective of the complete test program was to determine the structural integrity of the existing A/C roof panels installed in the 105KE and 105KW facilities. The data from these tests indicated that the roofs are capable of resisting the design loads and are considered safe. A second phase test to address the roof resistance to personnel and roof removal/roofing system installation equipment was recommended and is underway.

  20. Innovative Ballasted Flat Roof Solar PV Racking System

    SciTech Connect (OSTI)

    Peek, Richard T.

    2015-01-23

    The objective of this project was to reduce the cost of racking for PV solar on flat commercial rooftops. Cost reductions would come from both labor savings and material savings related to the installation process. The rack would need to accommodate the majority of modules available on the market. Cascade Engineering has a long history of converting traditional metal type applications over to plastic. Injection molding of plastics have numerous advantages including selection of resin for the application, placing the material exactly where it is needed, designing in features that will speed up the installation process, and weight reduction of the array. A plastic rack would need to meet the requirements of UL2703, Mounting systems, mounting devices, clamping/retention devices, and ground lugs for use with flat-plate photovoltaic modules and panels. Comparing original data to the end of project racking design, racking material costs were reduced 50% and labor costs reduced 64%. The racking product accommodates all 60 and 72 cell panels on the market, meets UL2703 requirements, contributes only 1.3 pounds per square foot of weight to the array, requires little ballast to secure the array, automatically grounds the module when the module is secured, stacks/nests well for shipping/fewer lifts to the roof, provides integrated wire routing, allows water to drain on the roof, and accommodates various seismic roof connections. Project goals were achieved as noted in the original funding application.

  1. Technology Solutions Case Study: Field Testing an Unvented Roof with Asphalt Shingles in a Cold Climate

    SciTech Connect (OSTI)

    K. Ueno and J. Lstiburek

    2015-09-01

    Test houses with unvented roof assemblies were built to measure long-term moisture performance, in the Chicago area (5A) and the Houston area (2A). The Chicago-area test bed had seven experimental rafter bays, including a "control" vented compact roof, and six unvented roof variants with cellulose or fiberglass insulation. The interior was run at 50% RH. All roofs except the vented cathedral assembly experienced wood moisture contents and RH levels high enough to constitute failure. Disassembly at the end of the experiment showed that the unvented fiberglass roofs had wet sheathing and mold growth. In contrast, the cellulose roofs only had slight issues, such as rusted fasteners and sheathing grain raise.

  2. Energy Saving "Cool Roofs" Installed at Y-12 | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration Energy Saving "Cool Roofs" Installed at Y-12 October 17, 2012 The Y-12 National Security Complex has taken additional steps to reduce its energy costs by installing almost 100,000 square feet of new heat reflective "cool" roofs at the Oak Ridge, Tennessee facility. File 2012-10-17 NPO Y-12 Cool Roofs

  3. Secretary Chu Announces Steps to Implement Cool Roofs at DOE and Across the

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

    Federal Government | Department of Energy Steps to Implement Cool Roofs at DOE and Across the Federal Government Secretary Chu Announces Steps to Implement Cool Roofs at DOE and Across the Federal Government July 19, 2010 - 12:00am Addthis Washington - U.S. Department of Energy Secretary Steven Chu today announced a series of initiatives underway at the Department of Energy to more broadly implement cool roof technologies on DOE facilities and buildings across the federal government. Cool

  4. Measure Guideline: Deep Energy Enclosure Retrofit for Zero Energy Ready House Flat Roofs

    SciTech Connect (OSTI)

    Loomis, H.; Pettit, B.

    2015-05-01

    This Measure Guideline provides design and construction information for a deep energy enclosure retrofit (DEER) solution of a flat roof assembly. It describes the strategies and procedures for an exterior retrofit of a flat, wood-framed roof with brick masonry exterior walls, using exterior and interior (framing cavity) insulation. The approach supported in this guide could also be adapted for use with flat, wood-framed roofs with wood-framed exterior walls.

  5. Measure Guideline. Deep Energy Enclosure Retrofit for Zero Energy Ready House Flat Roofs

    SciTech Connect (OSTI)

    Loomis, H.; Pettit, B.

    2015-05-29

    This Measure Guideline provides design and construction information for a deep energy enclosure retrofit solution of a flat roof assembly. It describes the strategies and procedures for an exterior retrofit of a flat wood-framed roof with brick masonry exterior walls using exterior and interior (framing cavity) insulation. The approach supported in this guide could also be adapted for use with flat wood-framed roofs with wood-framed exterior walls.

  6. Monitoring the Energy-Use Effects of Cool Roofs on California Commercial Buildings

    SciTech Connect (OSTI)

    Akbari, Hashem; Levinson, Ronnen; Konopaki, Steve; Rainer, Leo

    2004-07-01

    Solar-reflective roofs stay cooler in the sun than solar-absorptive roofs. Such ''cool'' roofs achieve lower surface temperatures that reduce heat conduction into the building and the building's cooling load. The California Energy Commission has funded research in which Lawrence Berkeley National Laboratory (LBNL) has measured the electricity use and peak demand in commercial buildings to document savings from implementing the Commission's Cool Roofs program. The study seeks to determine the savings achieved by cool roofs by monitoring the energy use of a carefully selected assortment of buildings participating in the Cool Roofs program. Measurements were needed because the peak savings resulting from the application of cool roofs on different types of buildings in the diverse California climate zones have not been well characterized to date. Only a few occupancy categories (e.g., office and retail buildings) have been monitored before this, and those were done under a limited number of climatic conditions. To help rectify this situation, LBNL was tasked to select the buildings to be monitored, measure roof performance before and after replacing a hot roof by a cool roof, and document both energy and peak demand savings resulting from installation of cool roofs. We monitored the effects of cool roofs on energy use and environmental parameters in six California buildings at three different sites: a retail store in Sacramento; an elementary school in San Marcos (near San Diego); and a 4-building cold storage facility in Reedley (near Fresno). The latter included a cold storage building, a conditioning and fruit-palletizing area, a conditioned packing area, and two unconditioned packing areas (counted as one building).

  7. CERC-BEE Cool Roofs and Urban Heat Islands: infrastructure and...

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

    use of energy- and carbon-saving cool surfaces (roofs, walls, andor pavements) in China. Demonstrate and quantify the benefits of cool-surface technology in China. ...

  8. Microsoft Word - Tech_Memo_SanJose_HPPavilion_BIPVL-RoofImpact...

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

    ... Others are solar energy providers that have manufactured a BIPV laminate product for roofs using Uni-Solar technology (such as Advanced Green Technologies) but their product is ...

  9. Application of Spray Foam Insulation Under Plywood and Oriented Strand Board Roof Sheathing

    SciTech Connect (OSTI)

    Grin, A. [Building Science Corporation, Somerville, MA (United States); Smegal, J. [Building Science Corporation, Somerville, MA (United States); Lstiburek, J. [Building Science Corporation, Somerville, MA (United States)

    2013-10-01

    Unvented roof strategies with open cell and closed cell spray polyurethane foam insulation sprayed to the underside of roof sheathing have been used since the mid-1990's to provide durable and efficient building enclosures. However, there have been isolated moisture related incidents reported anecdotally that raise potential concerns about the overall hygrothermal performance of these systems. This project involved hygrothermal modeling of a range of rainwater leakage and field evaluations of in-service residential roofs using spray foam insulation. All of the roof assemblies modeled exhibited drying capacity to handle minor rainwater leakage. All field evaluation locations of in-service residential roofs had moisture contents well within the safe range for wood-based sheathing. Explorations of eleven in-service roof systems were completed. The exploration involved taking a sample of spray foam from the underside of the roof sheathing, exposing the sheathing, then taking a moisture content reading. All locations had moisture contents well within the safe range for wood-based sheathing. One full-roof failure was reviewed, as an industry partner was involved with replacing structurally failed roof sheathing. In this case the manufacturer's investigation report concluded that the spray foam was installed on wet OSB based on the observation that the spray foam did not adhere well to the substrate and the pore structure of the closed cell spray foam at the ccSPF/OSB interface was indicative of a wet substrate.

  10. Building America Case Study: Cost Analysis of Roof-Only Air Sealing...

    Energy Savers [EERE]

    Cost Analysis of Roof-Only Air Sealing and Insulation Strategies on 1 -Story Homes in ... Partnership Building Component: Roofattic air sealing and insulation Application: ...

  11. Asphalt Roofing Shingles Into Energy Project Summary Report

    SciTech Connect (OSTI)

    Jameson, Rex, PE

    2008-04-28

    Based on a widely cited September, 1999 report by the Vermont Agency of Natural Resources, nearly 11 million tons of asphalt roofing shingle wastes are produced in the United States each year. Recent data suggests that the total is made up of about 9.4 million tons from roofing tear-offs and about 1.6 million tons from manufacturing scrap. Developing beneficial uses for these materials would conserve natural resources, promote protection of the environment and strengthen the economy. This project explored the feasibility of using chipped asphalt shingle materials in cement manufacturing kilns and circulating fluidized bed (CFB) boilers. A method of enhancing the value of chipped shingle materials for use as fuel by removing certain fractions for use as substitute raw materials for the manufacture of new shingles was also explored. Procedures were developed to prevent asbestos containing materials from being processed at the chipping facilities, and the frequency of the occurrence of asbestos in residential roofing tear-off materials was evaluated. The economic feasibility of each potential use was evaluated based on experience gained during the project and on a review of the well established use of shingle materials in hot mix asphalt. This project demonstrated that chipped asphalt shingle materials can be suitable for use as fuel in circulating fluidized boilers and cement kilns. More experience would be necessary to determine the full benefits that could be derived and to discover long term effects, but no technical barriers to full scale commercial use of chipped asphalt shingle materials in these applications were discovered. While the technical feasibility of various options was demonstrated, only the use of asphalt shingle materials in hot mix asphalt applications is currently viable economically.

  12. CAVERN ROOF STABILITY FOR NATURAL GAS STORAGE IN BEDDED SALT

    SciTech Connect (OSTI)

    DeVries, Kerry L; Mellegard, Kirby D; Callahan, Gary D; Goodman, William M

    2005-06-01

    This report documents research performed to develop a new stress-based criterion for predicting the onset of damage in salt formations surrounding natural gas storage caverns. Laboratory tests were conducted to investigate the effects of shear stress, mean stress, pore pressure, temperature, and Lode angle on the strength and creep characteristics of salt. The laboratory test data were used in the development of the new criterion. The laboratory results indicate that the strength of salt strongly depends on the mean stress and Lode angle. The strength of the salt does not appear to be sensitive to temperature. Pore pressure effects were not readily apparent until a significant level of damage was induced and the permeability was increased to allow penetration of the liquid permeant. Utilizing the new criterion, numerical simulations were used to estimate the minimum allowable gas pressure for hypothetical storage caverns located in a bedded salt formation. The simulations performed illustrate the influence that cavern roof span, depth, roof salt thickness, shale thickness, and shale stiffness have on the allowable operating pressure range. Interestingly, comparison of predictions using the new criterion with that of a commonly used criterion indicate that lower minimum gas pressures may be allowed for caverns at shallow depths. However, as cavern depth is increased, less conservative estimates for minimum gas pressure were determined by the new criterion.

  13. A guidebook for insulated low-slope roof systems. IEA Annex 19, Low-slope roof systems: International Energy Agency Energy Conservation in Buildings and Community Systems Programme

    SciTech Connect (OSTI)

    Not Available

    1994-02-01

    Low-slope roof systems are common on commercial and industrial buildings and, to a lesser extent, on residential buildings. Although insulating materials have nearly always been a component of low-slope roofs, the amount of insulation used has increased in the past two decades because of escalation of heating and cooling costs and increased awareness of the need for energy conservation. As the amount of insulation has increased, the demand has intensified for design, installation, and maintenance information specifically for well-insulated roofs. Existing practices for design, installation, and maintenance of insulated roofs have evolved from experience. Typically, these practices feature compromises due to the different properties of materials making up a given roof system. Therefore, they should be examined from time to time to ensure that they are appropriate as new materials continue to enter the market and as the data base on existing systems expands. A primary purpose of this International Energy Agency (IEA) study is to assess current roofing insulation practices in the context of an accumulating data base on performance.

  14. An analysis of moisture accumulation in the roof cavities of manufactured housing

    SciTech Connect (OSTI)

    Burch, D.

    1995-09-01

    A detailed computer analysis is conducted to investigate whether moisture problems occur in the roof cavity of manufactured homes constructed in compliance with the current Department of Housing and Urban Development (HUD) Standards for manufactured housing. The current HUD Standards require a ceiling vapor retarder, but do not require outdoor ventilation of the roof cavity. In cold climates, the analysis revealed that moisture accumulates at lower roof surface and poses a risk of material degradation. The analysis found the following combination of passive measures to be effective in preventing detrimental winter moisture accumulation at lower surface of the roof: (1) providing a ceiling vapor retarder; (2) sealing penetrations and openings in the ceiling construction, and (3) providing natural ventilation openings in the roof cavity. In addition, the performance of a roof cavity exposed to a hot and humid climate is investigated. The analysis revealed that outdoor ventilation of the roof cavity causes the monthly mean relative humidity at the upper surface of the vapor retarder to exceed 80%. This condition is conducive to mold and mildew growth.

  15. Application of Spray Foam Insulation Under Plywood and Oriented Strand Board Roof Sheathing

    SciTech Connect (OSTI)

    Grin, A.; Smegal, J.; Lstiburek, J.

    2013-10-01

    Unvented roof strategies with open cell and closed cell spray polyurethane foam insulation sprayed to the underside of roof sheathing have been used since the mid-1990's to provide durable and efficient building enclosures. However, there have been isolated moisture related incidents reported anecdotally that raise potential concerns about the overall hygrothermal performance of these systems. The incidents related to rainwater leakage and condensation concerns. Condensation concerns have been extensively studied by others and are not further discussed in this report. This project involved hygrothermal modeling of a range of rainwater leakage and field evaluations of in-service residential roofs using spray foam insulation. All of the roof assemblies modeled exhibited drying capacity to handle minor rainwater leakage. All field evaluation locations of in-service residential roofs had moisture contents well within the safe range for wood-based sheathing. Explorations of eleven in-service roof systems were completed. The exploration involved taking a sample of spray foam from the underside of the roof sheathing, exposing the sheathing, then taking a moisture content reading. All locations had moisture contents well within the safe range for wood-based sheathing. One full-roof failure was reviewed, as an industry partner was involved with replacing structurally failed roof sheathing. In this case the manufacturer's investigation report concluded that the spray foam was installed on wet OSB based on the observation that the spray foam did not adhere well to the substrate and the pore structure of the closed cell spray foam at the ccSPF/OSB interface was indicative of a wet substrate.

  16. What's on your Roof? Rooftop Unit (RTU) Efficiency Advice and Guidance

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

    from the Advanced RTU Campaign | Department of Energy What's on your Roof? Rooftop Unit (RTU) Efficiency Advice and Guidance from the Advanced RTU Campaign What's on your Roof? Rooftop Unit (RTU) Efficiency Advice and Guidance from the Advanced RTU Campaign November 10, 2015 - 11:40am Addthis What’s on your Roof? Rooftop Unit (RTU) Efficiency Advice and Guidance from the Advanced RTU Campaign By Marta Schantz This is the first in a series of upcoming blogs on DOE's Advanced Rooftop Unit

  17. You Don't Need to Raise the Roof: Cutting Solar Permitting Costs for

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

    Wooden Rooftops | Department of Energy You Don't Need to Raise the Roof: Cutting Solar Permitting Costs for Wooden Rooftops You Don't Need to Raise the Roof: Cutting Solar Permitting Costs for Wooden Rooftops June 17, 2015 - 3:42pm Addthis You Don’t Need to Raise the Roof: Cutting Solar Permitting Costs for Wooden Rooftops Stephen F. Dwyer Stephen F. Dwyer PhD., Physical Engineer, Sandia National Laboratory As solar energy becomes a more affordable choice to power our lives, hardware

  18. Impact of Solar PV Laminate Membrane Systems on Roofs | Department of

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

    Energy Information Resources » Impact of Solar PV Laminate Membrane Systems on Roofs Impact of Solar PV Laminate Membrane Systems on Roofs In 2008, CH2M HILL performed a solar site analysis of the HP Pavilion facility for the City of San José under the Department of Energy's Solar America Showcase program. Based on weight loading requirements of the facility's roof, CH2M HILL recommended a building integrated photovoltaic (BIPV) product that consists of thin-film, flexible photovoltaic

  19. Fatal accidents involving roof falls in coal mining, 1996--1998

    SciTech Connect (OSTI)

    Not Available

    1999-01-01

    This publication presents information on fatalities involving roof and rib falls that occurred in coal mining operations from January 1996 through December 1998. It includes statistics for the fatalities, as well as abstracts, best practices and illustrations. Conclusion statements have been substituted for best practices where no Title 30 Code of Regulations violations were cited during the accident investigation. From January 1996 through December 1998, 36 miners died at coal operations from accidents classified as roof falls. The information in the report is based on statistics taken from the 1996 through 1998 MSHA Fatal Illustration Programs: Roof Fall Fatalities by District.

  20. Fatal accidents involving roof falls in coal mining, 1996--1998

    SciTech Connect (OSTI)

    1999-11-01

    This publication presents information on fatalities involving roof and rib falls that occurred in coal mining operations from January 1996 through December 1998. It includes statistics for the fatalities, as well as abstracts, best practices and illustrations. Conclusion statements have been substituted for best practices where no Title 30 Code of Regulations violations were cited during the accident investigation. From January 1996 through December 1998, 36 miners died at coal operations from accidents classified as roof falls. The information in the report is based on statistics taken from the 1996 through 1998 MSHA Fatal Illustration Programs: Roof Fall Fatalities by District.

  1. Evolution of cool-roof standards in the United States (Journal...

    Office of Scientific and Technical Information (OSTI)

    high solar reflectance and high thermal emittance stay cool in the sun. A roof with lower thermal emittance but exceptionally high solar reflectance can also stay cool in the sun. ...

  2. A meeting of the minds when NYC CoolRoofs visits PPPL | Princeton...

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

    which collected data on three white "cool roofs," including one on the Museum of Modern Art Queens in Long Island City, and found there was a 42 degree Fahrenheit difference...

  3. Improving the System Life of Basic Oxygen and Electric Arc Furnace Hoods, Roofs, and Side Vents

    Broader source: Energy.gov [DOE]

    This factsheet describes the benefits of a high-performance aluminum bronze alloy to basic oxygen furnace and electric arc furnace components such as hoods, roofs, and side vents.

  4. Using remote sensing to quantify albedo of roofs in seven California...

    Office of Scientific and Technical Information (OSTI)

    1: Methods Citation Details In-Document Search This content will become publicly available on March 14, 2017 Title: Using remote sensing to quantify albedo of roofs in seven ...

  5. Urban Heat Islands: Anti-Soiling Cool Roof Coatings | Department of Energy

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

    Anti-Soiling Cool Roof Coatings Urban Heat Islands: Anti-Soiling Cool Roof Coatings Performers: Lawrence Berkeley National Laboratory Project Partners: -- Oak Ridge National Laboratory - Oak Ridge, TN -- Dow Chemical Company - Midland, MI DOE Funding: $500,000 Cost Share: $500,000 Project Term: Jan. 2013 - Dec. 2014 Project Objective The U.S.-China Clean Energy Research Center (CERC) is a pioneering research and development (R&D) consortium bringing together governments, key policymakers,

  6. Measured Energy Savings from the Application of Reflective Roofs in 3 AT and T Regeneration Buildings

    SciTech Connect (OSTI)

    Akbari, Hashen; Rainer, Leo

    2000-11-01

    Energy use and environmental parameters were monitored in three AT and T regeneration buildings during the summer of 2000. These buildings are constructed with concrete and are about 14.9 m2 (160 f2; 10x16 ft)in size. The buildings were initially monitored for about 1 1/2 months to establish a base condition. Then, the roofs of the buildings were painted with a white coating and the monitoring was continued. The original roof reflectances were about 26 percent; after the application of roof coatings the reflectivities increased to about 72 percent. In two of these buildings, we monitored savings of about 0.5kWh per day (8.6 kWh/m2 [0.8 kWh/ft2]). The third building showed a reduction in air-conditioning energy use of about 13kWh per day. These savings probably resulted from the differences in the performance (EER) of the two dissimilar AC units in this building. The estimated annual savings for two of the buildings are about 125kWh per year; at a cost of dollar 0.1/kWh, savings are about dollar 12.5 per year. Obviously, it costs significantly more than this amount to coat the roofs with reflective coating, particularly because of the remote location of the buildings. However, since the prefabricated roofs are already painted green at the factory, painting them with white (reflective) color would bring no additional cost. Hence the payback time for having reflective roofs is nil, and the reflective roofs save an accumulated 370kWh over 30 years of the life of the roof.

  7. The Trade-off between Solar Reflectance and Above-Sheathing Ventilation for Metal Roofs on Residential and Commercial Buildings

    SciTech Connect (OSTI)

    Desjarlais, Andre Omer; Kriner, Scott; Miller, William A

    2013-01-01

    An alternative to white and cool-color roofs that meets prescriptive requirements for steep-slope (residential and non-residential) and low-slope (non-residential) roofing has been documented. Roofs fitted with an inclined air space above the sheathing (herein termed above-sheathing ventilation, or ASV), performed as well as if not better than high-reflectance, high-emittance roofs fastened directly to the deck. Field measurements demonstrated the benefit of roofs designed with ASV. A computer tool was benchmarked against the field data. Testing and benchmarks were conducted at roofs inclined at 18.34 ; the roof span from soffit to ridge was 18.7 ft (5.7 m). The tool was then exercised to compute the solar reflectance needed by a roof equipped with ASV to exhibit the same annual cooling load as that for a direct-to-deck cool-color roof. A painted metal roof with an air space height of 0.75 in. (0.019 m) and spanning 18.7 ft (5.7 m) up the roof incline of 18.34 needed only a 0.10 solar reflectance to exhibit the same annual cooling load as a direct-to-deck cool-color metal roof (solar reflectance of 0.25). This held for all eight ASHRAE climate zones complying with ASHRAE 90.1 (2007a). A dark heat-absorbing roof fitted with 1.5 in. (0.038 m) air space spanning 18.7 ft (5.7 m) and inclined at 18.34 was shown to have a seasonal cooling load equivalent to that of a conventional direct-to-deck cool-color metal roof. Computations for retrofit application based on ASHRAE 90.1 (1980) showed that ASV air spaces of either 0.75 or 1.5 in. (0.019 and 0.038 m) would permit black roofs to have annual cooling loads equivalent to the direct-to-deck cool roof. Results are encouraging, and a parametric study of roof slope and ASV aspect ratio is needed for developing guidelines applicable to all steep- and low-slope roof applications.

  8. Building America Technology Solutions for New and Existing Homes...

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

    Building America Technology Solutions Case Study: Field Testing an Unvented Roof with ... to Share With Homeowners Unvented, Conditioned Attics - Building America Top Innovation

  9. Where to Insulate in a Home | Department of Energy

    Office of Environmental Management (EM)

    to improve your home's energy efficiency. Insulate either the attic floor or under the roof. Check with a contractor about crawl space or basement insulation. Tips: Insulation...

  10. Emerging Technologies Program

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

    attic and roof systems Advanced heat pump ... Building Energy End-Use & Emerging Technologies (ET) ... due 4113, full applications due 52813 - Current ...

  11. Condition Assessment Survey (CAS) Program. Deficiency standards and inspections methods manual: Volume 5, 0.05 Roofing

    SciTech Connect (OSTI)

    Not Available

    1993-05-01

    General information is presented for asset determinant factor/CAS repair codes/CAS cost factors; guide sheet tool & material listing; testing methods; inspection frequency; standard system design life tables; and system work breakdown structure. Deficiency standards and inspection methods are presented for built-up membrane; single- ply membrane; metal roofing systems; coated foam membrane; shingles; tiles; parapets; roof drainage system; roof specialties; and skylights.

  12. Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-11-01

    Spray polyurethane foams (SPFs) have advantages over alternative insulation methods because they provide air sealing in complex assemblies, particularly roofs. Spray foam can provide the thermal, air, and vapor control layers in both new and retrofit construction. Unvented roof strategies with open cell and closed cell SPF insulation sprayed to the underside of roof sheathing have been used since the mid-1990s to provide durable and efficient building enclosures. However, there have been isolated incidents of failures (either sheathing rot or SPF delamination) that raise some general concerns about the hygrothermal performance and durability of these systems. The primary risks for roof systems are rainwater leaks, condensation from diffusion and air leakage, and built-in construction moisture. This project directly investigated rain and indirectly investigated built-in construction moisture and vapor drives. Research involved both hygrothermal modeling of a range of rain water leakage scenarios and field evaluations of in-service residential roofs. Other variables considered were climate zone, orientation, interior relative humidity, and the vapor permeance of the coating applied to the interior face of open cell SPF.

  13. Technology Solutions Case Study: Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing

    SciTech Connect (OSTI)

    2013-11-01

    Spray polyurethane foams (SPFs) have advantages over alternative insulation methods because they provide air sealing in complex assemblies, particularly roofs. Spray foam can provide the thermal, air, and vapor control layers in both new and retrofit construction. Unvented roof strategies with open cell and closed cell SPF insulation sprayed to the underside of roof sheathing have been used since the mid-1990s to provide durable and efficient building enclosures. However, there have been isolated incidents of failures (either sheathing rot or SPF delamination) that raise some general concerns about the hygrothermal performance and durability of these systems. The primary risks for roof systems are rainwater leaks, condensation from diffusion and air leakage, and built-in construction moisture. In this project, Building Science Corporation investigated rain and built-in construction moisture and vapor drives. Research involved both hygrothermal modeling of a range of rain water leakage scenarios and field evaluations of in-service residential roofs. Other variables considered were climate zone, orientation, interior relative humidity, and the vapor permeance of the coating applied to the interior face of open cell SPF.

  14. No Roof, No Problem: Shared Solar Programs Make Solar Possible For You |

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

    Department of Energy No Roof, No Problem: Shared Solar Programs Make Solar Possible For You No Roof, No Problem: Shared Solar Programs Make Solar Possible For You January 29, 2015 - 3:39pm Addthis Innovative solar business models like these help make it easier for communities to increase solar deployment by making it faster, easier and cheaper for people to invest in solar together and enabling multiple participants to benefit directly from the energy produced by one solar array. | Image by

  15. Scaling of economic benefits from Green Roof implementation in Washington, DC.

    SciTech Connect (OSTI)

    Niu, H.; Clark, C. E.; Zhou, J.; Adriaens, P.; Environmental Science Division; Dalian Univ. of Technology; Univ. of Michigan

    2010-06-01

    Green roof technology is recognized for mitigating stormwater runoff and energy consumption. Methods to overcome the cost gap between green roofs and conventional roofs were recently quantified by incorporating air quality benefits. This study investigates the impact of scaling on these benefits at the city-wide scale using Washington, DC as a test bed because of the proposed targets in the 20-20-20 vision (20 million ft{sup 2} by 2020) articulated by Casey Trees, a nonprofit organization. Building-specific stormwater benefits were analyzed assuming two proposed policy scenarios for stormwater fees ranging from 35 to 50% reduction for green roof implementation. Heat flux calculations were used to estimate building-specific energy savings for commercial buildings. To assess benefits at the city scale, stormwater infrastructure savings were based on operational savings and size reduction due to reduced stormwater volume generation. Scaled energy infrastructure benefits were calculated using two size reductions methods for air conditioners. Avoided carbon dioxide, nitrogen oxide (NOx), and sulfur dioxide emissions were based on reductions in electricity and natural gas consumption. Lastly, experimental and fugacity-based estimates were used to quantify the NOx uptake by green roofs, which was translated to health benefits using U.S. Environmental Protection Agency models. The results of the net present value (NPV) analysis showed that stormwater infrastructure benefits totaled $1.04 million (M), while fee-based stormwater benefits were $0.22-0.32 M/y. Energy savings were $0.87 M/y, while air conditioner resizing benefits were estimated at $0.02 to $0.04 M/y and avoided emissions benefits (based on current emission trading values) were $0.09 M-0.41 M/y. Over the lifetime of the green roof (40 years), the NPV is about 30-40% less than that of conventional roofs (not including green roof maintenance costs). These considerable benefits, in concert with current and emerging policy frameworks, may facilitate future adoption of this technology.

  16. Laying the Foundation for a Solar America: The Million Solar Roofs Initiative

    SciTech Connect (OSTI)

    Strahs, G.; Tombari, C.

    2006-10-01

    As the U.S. Department of Energy's Solar Energy Technology Program embarks on the next phase of its technology acceptance efforts under the Solar America Initiative, there is merit to examining the program's previous market transformation effort, the Million Solar Roofs Initiative. Its goal was to transform markets for distributed solar technologies by facilitating the installation of solar systems.

  17. Income Tax Deduction for Solar-Powered Roof Vents or Fans

    Broader source: Energy.gov [DOE]

    The taxpayer must provide proof of the taxpayer’s costs for installation of a solar powered roof vent or fan and a list of the persons or corporations that supplied labor or materials for the solar...

  18. Technology Solutions Case Study: Field Testing an Unvented Roof with Fibrous Insulation and Tiles

    SciTech Connect (OSTI)

    2015-11-01

    This case study by the U.S. Department of Energy’s Building America research team Building Science Corporation is a test implementation of an unvented tile roof assembly in a hot-humid climate (Orlando, Florida; zone 2A), insulated with air-permeable insulation (netted and blown fiberglass).

  19. Project Overcoat An Exploration of Exterior Insulation Strategies for 1- Story Roof Applications in Cold Climates

    SciTech Connect (OSTI)

    Ojczyk, Cindy; Mosiman, Garrett; Huelman, Pat; Schirber, Tom; Yost, Peter; Murry, Tessa

    2013-04-01

    The development of an alternative method to interior-applied insulation strategies or exterior applied band-aids such as heat tapes and ice belts may help reduce energy needs of millions of 1-1/2 story homes while reducing the risk of ice dam formation. A potential strategy for energy improvement of the roof is borrowed from new construction best practices: Here an overcoat of a continuous air, moisture, and thermal barrier is applied on the outside of the roof structure for improved overall performance. The continuous insulation of this approach facilitates a reduction in thermal bridging which could further reduce energy consumption and bring existing homes closer to meeting the Building America goals for energy reduction. Research favors an exterior approach to deep energy retrofits and ice dam prevention in existing homes. The greatest amount of research focuses on whole house deep energy retrofits leaving a void in roof-only applications. The research is also void of data supporting the hygrothermal performance, durability, constructability, and cost of roof-only exterior overcoat strategies. Yet, contractors interviewed for this report indicate an understanding that exterior approaches are most promising for mitigating ice dams and energy loss and are able to sell these strategies to homeowners.

  20. Countries Commit to White Roofs, Potentially Offsetting the Emissions of Over 300 Power Plants

    Broader source: Energy.gov [DOE]

    India, Mexico, and the United States have signed up to join the Cool Roofs Working Group, which was announced yesterday in Abu Dhabi at the second Clean Energy Ministerial -- a high-level global forum to promote policies and programs that advance clean energy technology, to share lessons learned and best practices and to encourage the transition to a global clean energy economy.

  1. Indirect Benefits (Increased Roof Life and HVAC Savings) from a Solar PV System at the San José Convention Center

    Broader source: Energy.gov [DOE]

    The City of San José is considering the installation of a solar photovoltaic (PV) system on the roof of the San José Convention Center. The installation would be on a lower section of the roof covering approximately 21,000 ft2. To assist city staff in making a decision on the PV installation, the Department of Energy Tiger Team has investigated potential indirect benefits of installing a solar PV system on the Convention Center roof. The indirect benefits include potential increase in roof life, as well as potential reduced heating and cooling load in the building due to roof shading from the PV system.

  2. Buildings Energy Data Book: 3.7 Retail Markets and Companies

    Buildings Energy Data Book [EERE]

    4 Advanced Energy Design Guide for Small Retail Buildings (1) Shell Percent Glass 0.4 Window (U-Factor 0.38-0.69 SHGC 0.40-0.44 Wall R-Value (2) 7.6-15.2 c.i. Roof R-Value Attic 30-60 Insulation Above Deck 15-25 c.i. Lighting Average Power Density (W/ft.^2) 1.3 System and Plant Heating Plant Gas Furnace(>225 kBtuh) 80% Combustion Efficiency Cooling Plant Air conditioner (>135-240 kBtuh) 10.8 EER/11.2 IPLV - 11.0 EER/11.5 IPLV Service Hot Water Gas Storage Water Heater (>75kBtuh) 90%

  3. Energy Department Announces Six Projects to Develop Energy-Saving Windows, Roofs, and Heating and Cooling Equipment

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Energy Department announces a $9 million investment in leading-edge building envelope technologies, including high-efficiency, high-performance windows, roofs and heating and cooling equipment.

  4. Global Cooling: Policies to Cool the World and Offset Global Warming from CO2 Using Reflective Roofs and Pavements

    SciTech Connect (OSTI)

    Akbari, Hashem; Levinson, Ronnen; Rosenfeld, Arthur; Elliot, Matthew

    2009-08-28

    Increasing the solar reflectance of the urban surface reduce its solar heat gain, lowers its temperatures, and decreases its outflow of thermal infrared radiation into the atmosphere. This process of 'negative radiative forcing' can help counter the effects of global warming. In addition, cool roofs reduce cooling-energy use in air conditioned buildings and increase comfort in unconditioned buildings; and cool roofs and cool pavements mitigate summer urban heat islands, improving outdoor air quality and comfort. Installing cool roofs and cool pavements in cities worldwide is a compelling win-win-win activity that can be undertaken immediately, outside of international negotiations to cap CO{sub 2} emissions. We propose an international campaign to use solar reflective materials when roofs and pavements are built or resurfaced in temperate and tropical regions.

  5. Performance of 3-Sun Mirror Modules on Sun Tracking Carousels on Flat Roof Buildings

    SciTech Connect (OSTI)

    Fraas, Dr. Lewis; Avery, James E.; Minkin, Leonid M; Maxey, L Curt; Gehl, Anthony C; Hurt, Rick A; Boehm, Robert F

    2008-01-01

    Commercial buildings represent a near term market for cost competitive solar electric power provided installation costs and solar photovoltaic module costs can be reduced. JX Crystals has developed a carousel sun tracker that is prefabricated and can easily be deployed on building flat roof tops without roof penetration. JX Crystals is also developing 3-sun PV mirror modules where less expensive mirrors are substituted for two-thirds of the expensive single crystal silicon solar cell surface area. Carousels each with four 3-sun modules have been set up at two sites, specifically at Oak Ridge National Lab and at the University of Nevada in Las Vegas. The test results for these systems are presented.

  6. Three-dimensional analysis of AP600 standard plant shield building roof

    SciTech Connect (OSTI)

    Greimann, L.; Fanous, F.; Safar, S.; Khalil, A.; Bluhm, D.

    1999-06-01

    The AP600 passive containment vessel is surrounded by a concrete cylindrical shell covered with a truncated conical roof. This roof supports the passive containment cooling system (PCS) annular tank, shield plate and other nonstructural attachments. When the shield building is subjected to different loading combinations as defined in the Standard Review Plan (SRP), some of the sections in the shield building could experience forces in excess of their design values. This report summarized the three-dimensional finite element analysis that was conducted to review the adequacy of the proposed Westinghouse shield building design. The ANSYS finite element software was utilized to analyze the Shield Building Roof (SBR) under dead, snow, wind, thermal and seismic loadings. A three-dimensional model that included a portion of the shield building cylindrical shell, the conical roof and its attachments, the eccentricities at the cone-cylinder connection and at the compression ring and the PCS tank was developed. Mesh sensitivity studies were conducted to select appropriate element size in the cylinder, cone, near air intakes and in the vicinity of the eccentricities. Also, a study was carried out to correctly idealize the water-structure interaction in the PCS tank. Response spectrum analysis was used to calculate the internal forces at different sections in the SBR under Safe Shutdown Earthquake (SSE). Forty-nine structural modes and twenty sloshing modes were used. Two horizontal components of the SSE together with a vertical component were used. Modal stress resultants were combined taking into account the effects of closely spaced modes. The three earthquake directions were combined by the Square Root of the Sum Squares method. Two load combinations were studied. The load combination that included dead, snow, fluid, thermal and seismic loads was selected to be the most critical. Interaction diagrams for critical sections were developed and used to check the design adequacy. The results demonstrated that provided area of steal on each face of several sections of the AP600 SBR was inadequate. This was also noticed when comparing the total provided area of steel per section, i.e., the area of steel on both faces. The discrepancy between Westinghouse results and these reported herein could have resulted from the different finite element mesh sizes and the assumption used in Westinghouse design.

  7. Airtightness Results of Roof-Only Air Sealing Strategies on 1-1/2 Story Homes in Cold Climates

    SciTech Connect (OSTI)

    Ojczyk, C.; Murry, T.; Mosiman, G.

    2014-07-01

    In this second study on solutions to ice dams in 1-1/2 story homes, five test homes located in both cold and very cold climates were analyzed for air leakage reduction rates following modifications by independent contractors on owner-occupied homes. The reason for choosing this house type was they are very common in our area and very difficult to air seal and insulate effectively. Two projects followed a roof-only Exterior Thermal Moisture Management System (ETMMS) process. One project used an interior-only approach to roof air sealing and insulation. The remaining two projects used a deep energy retrofit approach for whole house (foundation wall, above grade wall, roof) air leakage and heat loss reduction. All were asked to provide information regarding project goals, process, and pre and post-blower door test results. Additional air leakage reduction data was provided by several NorthernSTAR Building America industry partners for interior-applied, roof-only modifications on 1-1/2 story homes. The data represents homes in the general market as well as homes that were part of the state of Minnesota weatherization program. A goal was to compare exterior air sealing methods with interior approaches. This pool of data enabled us to compare air tightness data from over 220 homes using similar air seal methods.

  8. Project Overcoat - An Exploration of Exterior Insulation Strategies for 1-1/2-Story Roof Applications in Cold Climates

    SciTech Connect (OSTI)

    Ojczyk, Cindy; Mosiman, Garrett; Huelman, Pat; Schirber, Tom; Yost, Peter; Murry, Tessa

    2013-04-01

    The development of an alternative method to interior-applied insulation strategies or exterior applied 'band-aids' such as heat tapes and ice belts may help reduce energy needs of millions of 1-1/2 story homes while reducing the risk of ice dam formation. A potential strategy for energy improvement of the roof is borrowed from new construction best practices: Here an 'overcoat' of a continuous air, moisture, and thermal barrier is applied on the outside of the roof structure for improved overall performance. The continuous insulation of this approach facilitates a reduction in thermal bridging which could further reduce energy consumption and bring existing homes closer to meeting the Building America goals for energy reduction. Research favors an exterior approach to deep energy retrofits and ice dam prevention in existing homes. The greatest amount of research focuses on whole house deep energy retrofits leaving a void in roof-only applications. The research is also void of data supporting the hygrothermal performance, durability, constructability, and cost of roof-only exterior overcoat strategies. Yet, contractors interviewed for this report indicate an understanding that exterior approaches are most promising for mitigating ice dams and energy loss and are able to sell these strategies to homeowners.

  9. Airtightness Results of Roof-Only Air Sealing Strategies on 1 ½-Story Homes in Cold Climates

    SciTech Connect (OSTI)

    Ojczyk, C.; Murry, T.; Mosiman, G.

    2014-07-01

    In this second study on solutions to ice dams in 1-1/2 story homes, the NorthernSTAR Building America Partnership team analyzed five test homes located in both cold and very cold climates for air leakage reduction rates following modifications by independent contractors on owner-occupied homes. These homes were chosen for testing as they are common in Minnesota and very difficult to air seal and insulate effectively. Two projects followed a roof-only Exterior Thermal Moisture Management System (ETMMS) process. One project used an interior-only approach to roof air sealing and insulation. The remaining two projects used a deep energy retrofit approach for whole house (foundation wall, above grade wall, roof) air leakage and heat loss reduction. All were asked to provide information regarding project goals, process, and pre and post-blower door test results. Additional air leakage reduction data was provided by several NorthernSTAR industry partners for interior-applied, roof-only modifications on 1-1/2 story homes. The data represents homes in the general market as well as homes that were part of the state of Minnesota weatherization program. A goal was to compare exterior air sealing methods with interior approaches. This pool of data enabled the team to compare air tightness data from over 220 homes using similar air seal methods.

  10. Roof-top solar energy potential under performance-based building energy codes: The case of Spain

    SciTech Connect (OSTI)

    Izquierdo, Salvador; Montanes, Carlos; Dopazo, Cesar; Fueyo, Norberto

    2011-01-15

    The quantification at regional level of the amount of energy (for thermal uses and for electricity) that can be generated by using solar systems in buildings is hindered by the availability of data for roof area estimation. In this note, we build on an existing geo-referenced method for determining available roof area for solar facilities in Spain to produce a quantitative picture of the likely limits of roof-top solar energy. The installation of solar hot water systems (SHWS) and photovoltaic systems (PV) is considered. After satisfying up to 70% (if possible) of the service hot water demand in every municipality, PV systems are installed in the remaining roof area. Results show that, applying this performance-based criterion, SHWS would contribute up to 1662 ktoe/y of primary energy (or 68.5% of the total thermal-energy demand for service hot water), while PV systems would provide 10 T W h/y of electricity (or 4.0% of the total electricity demand). (author)

  11. Performance evaluation of Automatic Extraction System. Volume V. Geotechnical investigations of the roof conditions in the area mined by the AES machine. Final technical report

    SciTech Connect (OSTI)

    Bieniawski, Z.T.; Rafia, F.; Newman, D.A.

    1980-07-01

    This report presents the results of an in-depth geotechnical investigation aimed at assessing the roof, floor, and coal pillar conditions in the area mined by an experimental Automatic Extraction System (AES), built by National Mine Service Co. The study included diamond core drilling, borescope observations, and detailed engineering geological mapping in Consolidation Coal's McElroy coal mine in West Virginia. The field investigations were accompanied by regional geology studies involving aerial photography and lineament analysis as well as by laboratory testing of 103 rock and coal samples. The roof conditions were interpreted by means of an engineering rock mass classification system, known as the Geomechanics Classification. It was found that the roof quality in the areas mined by the AES machine was poor and that the action of the AES support beams could be detrimental to the overall roof stability. Improvements in the procedures for evaluating future AES-type mining are suggested.

  12. Using Cool Roofs to Reduce Energy Use, Greenhouse Gas Emissions, and Urban Heat-island Effects: Findings from an India Experiment

    SciTech Connect (OSTI)

    Akbari, Hashem; Xu, Tengfang; Taha, Haider; Wray, Craig; Sathaye, Jayant; Garg, Vishal; Tetali, Surekha; Babu, M. Hari; Reddy, K. Niranjan

    2011-05-25

    Cool roofs, cool pavements, and urban vegetation reduce energy use in buildings, lower local air pollutant concentrations, and decrease greenhouse gas emissions from urban areas. This report summarizes the results of a detailed monitoring project in India and related simulations of meteorology and air quality in three developing countries. The field results quantified direct energy savings from installation of cool roofs on individual commercial buildings. The measured annual energy savings potential from roof-whitening of previously black roofs ranged from 20-22 kWh/m2 of roof area, corresponding to an air-conditioning energy use reduction of 14-26% in commercial buildings. The study estimated that typical annual savings of 13-14 kWh/m2 of roof area could be achieved by applying white coating to uncoated concrete roofs on commercial buildings in the Metropolitan Hyderabad region, corresponding to cooling energy savings of 10-19%. With the assumption of an annual increase of 100,000 square meters of new roof construction for the next 10 years in the Metropolitan Hyderabad region, the annual cooling energy savings due to whitening concrete roof would be 13-14 GWh of electricity in year ten alone, with cumulative 10-year cooling energy savings of 73-79 GWh for the region. The estimated savings for the entire country would be at least 10 times the savings in Hyderabad, i.e., more than 730-790 GWh. We estimated that annual direct CO2 reduction associated with reduced energy use would be 11-12 kg CO2/m2 of flat concrete roof area whitened, and the cumulative 10-year CO2 reduction would be approximately 0.60-0.65 million tons in India. With the price of electricity estimated at seven Rupees per kWh, the annual electricity savings on air-conditioning would be approximately 93-101 Rupees per m2 of roof. This would translate into annual national savings of approximately one billion Rupees in year ten, and cumulative 10-year savings of over five billion Rupees for cooling energy in India. Meteorological simulations in this study indicated that a reduction of 2C in air temperature in the Hyderabad area would be likely if a combination of increased surface albedo and vegetative cover are used as urban heat-island control strategies. In addition, air-temperature reductions on the order of 2.5-3.5C could be achieved if moderate and aggressive heat-island mitigation measures are adopted, respectively. A large-scale deployment of mitigation measures can bring additional indirect benefit to the urban area. For example, cooling outside air can improve the efficiency of cooling systems, reduce smog and greenhouse gas (GHG) emissions, and indirectly reduce pollution from power plants - all improving environmental health quality. This study has demonstrated the effectiveness of cool-roof technology as one of the urban heat-island control strategies for the Indian industrial and scientific communities and has provided an estimate of the national energy savings potential of cool roofs in India. These outcomes can be used for developing cool-roof building standards and related policies in India. Additional field studies, built upon the successes and lessons learned from this project, may be helpful to further confirm the scale of potential energy savings from the application of cooler roofs in various regions of India. In the future, a more rigorous meteorological simulation using urbanized (meso-urban) meteorological models should be conducted, which may produce a more accurate estimate of the air-temperature reductions for the entire urban area.

  13. DOE Zero Energy Ready Home Case Study: United Way of Long Island...

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

    unvented attic with R-48 ocsf under roof deck; ERV tied to wall hung boiler with hydro coil. DOE Zero Energy Ready Home Case Study: United Way of Long Island Housing...

  14. Technology Solutions Case Study: Complete and Fully Aligned Air Barrier

    SciTech Connect (OSTI)

    none,

    2012-08-01

    This research project, conducted by Pacific Northwest National Laboratory, focused on eliminating excessive humidity in the attic of a multi-floor, single-family home that was causing condensation and water damage along the roof and eaves.

  15. Solar Dynamics | Open Energy Information

    Open Energy Info (EERE)

    Dynamics Jump to: navigation, search Name: Solar Dynamics Place: Ottumwa, Iowa Zip: IA 52501 Sector: Solar Product: Solar Dynamics is a US-based solar powered attic roof vents...

  16. DOE Zero Energy Ready Home Case Study: United Way of Long Island...

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

    dense packed cellulose and 1.5" polyiso rigid; basement with 2.5: polyiso on interior; unvented attic with R-48 ocsf under roof deck; ERV tied to wall hung boiler with hydro coil. ...

  17. Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet), Building America Case Study: Technology Solutions for New and Existing Homes, Building Technologies Office (BTO)

    Energy Savers [EERE]

    Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing PROJECT aPPliCaTiON Construction: Existing homes with unvented cathedralized roofs. Type: Residential Climate Zones: All TEam mEmbERs Building Science Corporation www.buildingscience.com BASF www.basf.com Dow Chemical Company www.dow.com Honeywell http://honeywell.com Icynene www.icynene.com COdE COmPliaNCE 2012 International Code Council, International Residential Code Spray polyurethane foams (SPFs) have advantages over

  18. Soiling of building envelope surfaces and its effect on solar reflectance. Part I: Analysis of roofing product databases

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

    Sleiman, Mohamad; Ban-Weiss, George; Gilbert, Haley E.; François, David; Berdahl, Paul; Kirchstetter, Thomas W.; Destaillats, Hugo; Levinson, Ronnen

    2011-12-01

    The use of highly reflective “cool” roofing materials can decrease demand for air conditioning, mitigate the urban heat island effect, and potentially slow global warming. However, initially high roof solar reflectance can be degraded by natural soiling and weathering processes. We evaluated solar reflectance losses after three years of natural exposure reported in two separate databases: the Rated Products Directory of the US Cool Roof Rating Council (CRRC) and information reported by manufacturers to the US Environmental Protection Agency (EPA)’s ENERGY STAR® rating program. Many product ratings were culled because they were duplicative (within a database) or not measured. Amore » second, site-resolved version of the CRRC dataset was created by transcribing from paper records the site-specific measurements of aged solar reflectance in Florida, Arizona and Ohio. Products with high initial solar reflectance tended to lose reflectance, while those with very low initial solar reflectance tended to become more reflective as they aged. Within the site-resolved CRRC database, absolute solar reflectance losses for samples of medium-to-high initial solar reflectance were 2 - 3 times greater in Florida (hot and humid) than in Arizona (hot and dry); losses in Ohio (temperate but polluted) were intermediate. Disaggregating results by product type, factory-applied coating, field-applied coating, metal, modified bitumen, shingle, singleply membrane and tile, revealed that absolute solar reflectance losses were largest for fieldapplied coating, modified bitumen and single-ply membrane products, and smallest for factoryapplied coating and metal products.The 2008 Title 24 provisional aged solar reflectance formula overpredicts the measured aged solar reflectance of 0% to 30% of each product type in the culled public CRRC database. The rate of overprediction was greatest for field-applied coating and single-ply membrane products and least for factory-applied coating, shingle, and metal products. New product-specific formulas can be used to estimate provisional aged solar reflectance from initial solar reflectance pending measurement of aged solar reflectance. The appropriate value of soiling resistance varies by product type and is selected to attain some desired overprediction rate for the formula. The correlations for shingle products presented in this paper should not be used to predict aged solar reflectance or estimate provisional aged solar reflectance because the data set is too small and too limited in range of initial solar reflectance.« less

  19. Cost Analysis of Roof-Only Air Sealing and Insulation Strategies on 1 1/2-Story Homes in Cold Climates

    SciTech Connect (OSTI)

    Ojczyk, C.

    2014-12-01

    The External Thermal and Moisture Management System (ETMMS), typically seen in deep energy retrofits, is a valuable approach for the roof-only portions of existing homes, particularly the 1 1/2-story home. It is effective in reducing energy loss through the building envelope, improving building durability, reducing ice dams, and providing opportunities to improve occupant comfort and health.

  20. Cost Analysis of Roof-Only Air Sealing and Insulation Strategies on 1 1/2-Story Homes in Cold Climates

    SciTech Connect (OSTI)

    Ojczyk, C.

    2014-12-01

    The External Thermal and Moisture Management System (ETMMS), typically seen in deep energy retrofits, is a valuable approach for the roof-only portions of existing homes, particularly the 1 ½-story home. It is effective in reducing energy loss through the building envelope, improving building durability, reducing ice dams, and providing opportunities to improve occupant comfort and health.

  1. Become One In A Million: Partnership Updates. Million Solar Roofs and Interstate Renewable Energy Council Annual Meeting, Washington, D.C., October 2005

    SciTech Connect (OSTI)

    Tombari, C.

    2005-09-01

    The U.S. Department of Energy's Million Solar Roofs Initiative (MSR) is a unique public-private partnership aimed at overcoming market barriers for photovoltaics (PV), solar water heating, transpired solar collectors, solar space heating and cooling, and pool heating. This report contains annual progress reports from 866 partners across the United States.

  2. Technology Solutions Case Study: Cost Analysis of Roof-Only Air Sealing and Insulation Strategies on 1-1/2 Story Homes in Cold Climates, Minneapolis, MN

    SciTech Connect (OSTI)

    2014-12-01

    This case study describes the External Thermal and Moisture Management System developed by the NorthernSTAR Building America Partnership. This system is typically used in deep energy retrofits and is a valuable approach for the roof-only portions of existing homes, particularly the 1 1/2-story home. It is effective in reducing energy loss through the building envelope, improving building durability, reducing ice dams, and providing opportunities to improve occupant comfort and health.

  3. The technical viability of alternative blowing agents in polyisocyanurate roof insulation: A cooperative industry/government project

    SciTech Connect (OSTI)

    Christian, J.E.; Courville, G.E.; Desjarlais, A.O.; Graves, R.S.; Linkous, R.L.; McElroy, D.L.; Weaver, F.J.; Wendt, R.L.; Yarbrough, D.W.

    1993-06-01

    This report is a summary of the cooperative industry/government program to establish the viability of alternative blowing agents to chlorofluorocarbons (CFCs). The project was initiated in 1989 following two workshops that focused on needed research on thermal insulation blown with substitutes for CFC-11 and CFC-12. The project is directed by a steering committee of representatives of the sponsors and of Oak Ridge National Laboratory (ORNL). The purpose of the project is to determine if the performance of polyisocyanurate (PIR) roof insulation foam boards blown with alternate agents differs from the performance of boards blown with CFC-1. This report describes apparent thermal conductivity (k) results obtained from field and laboratory tests from 1989 to 1992 on a set of experimental PIR laminate boardstock produced to evaluate the viability of alternative hydrochlorofluorocarbons (HCFCs) as blowing agents. All boardstock was manufactured from similar formulations that were not optimized for thermal performance. Commercial broadstock made in the future may differ in performance from this set. The PIR boards were prepared with CFC-11, HCFC-123, HCFC-141b, and 50/50 and 65/35 blends of HCFC-123/HCFC-141b.

  4. Aluminum Bronze Alloys to Improve the System Life of Basic Oxygen and Electric Arc Furnace Hoods, Roofs and Side Vents.

    SciTech Connect (OSTI)

    Lawrence C. Boyd Jr.; Dr. Vinod K. Sikka

    2006-12-29

    Energy Industries of Ohio was the lead organization for a consortium that examined the current situation involving the service life of electric arc and basic oxygen furnace hoods, roofs and side vents. Republic Engineered Products (REP), one of the project partners, installed a full-scale Al-Bronze “skirt” in their BOF at their Lorain OH facility, believed to be the first such installation of this alloy in this service. In 24 months of operation, the Al-Bronze skirt has processed a total of 4,563 heats, requiring only 2 shutdowns for maintenance, both related to physical damage to the skirt from operational mishaps. Yearly energy savings related to the REP facility are projected to be ~ 10 billion Btu's with significant additional environmental and productivity benefits. In recognition of the excellent results, this project was selected as the winner of the Ohio’s 2006 Governor’s Award for Excellence in Energy, the state’s award for outstanding achievements in energy efficiency.

  5. Fuel Economy and Emissions Effects of Low Tire Pressure, Open Windows, Roof Top and Hitch-Mounted Cargo, and Trailer

    SciTech Connect (OSTI)

    Thomas, John F; Huff, Shean P; West, Brian H

    2014-01-01

    To quantify the fuel economy (FE) effect of some common vehicle accessories or alterations, a compact passenger sedan and a sport utility vehicle (SUV) were subjected to SAE J2263 coastdown procedures. Coastdowns were conducted with low tire pressure, all windows open, with a roof top or hitch-mounted cargo carrier, and with the SUV pulling an enclosed cargo trailer. From these coastdowns, vehicle dynamometer coefficients were developed which enabled the execution of vehicle dynamometer experiments to determine the effect of these changes on vehicle FE and emissions over standard drive cycles and at steady highway speeds. The FE penalty associated with the rooftop cargo box mounted on the compact sedan was as high as 25-27% at higher speeds, where the aerodynamic drag is most pronounced. For both vehicles, use of a hitch mounted cargo tray carrying a similar load resulted in very small FE penalties, unlike the rooftop cargo box. The results for the SUV pulling a 3500 pound enclosed cargo trailer were rather dramatic, resulting in FE penalties ranging from 30%, for the city cycle, to 50% at 80 mph, at which point significant CO generation indicated protective enrichment due to high load. Low tire pressure cases resulted in negligible to 10% FE penalty depending on the specific case and test point. Driving with all four windows open decreased FE by 4-8.5% for the compact sedan, and 1-4% for the SUV.

  6. NREL: National Residential Efficiency Measures Database - Retrofit Measures

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

    Submit Questions/Comments Retrofit Measures This page provides the types for all retrofit measures available in the National Residential Efficiency Measures Database. Select a component type below to see the retrofit measure data. For more information, read about the database, learn about the cost data, and see the glossary. Airflow Air Leakage Mechanical Ventilation Ceilings/Roofs Finished Roof Radiant Barrier Roof Material Unfinished Attic Foundation/Floors Crawlspace Slab Unfinished Basement

  7. Building America Webinar: High-Performance Enclosure Strategies, Part I:

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

    Unvented Roof Systems and Innovative Advanced Framing Strategies | Department of Energy Joe Lstiburek, Building Science Corporation, will discuss several advances in unvented roof technology to condition attics, including the use of diffusion venting and dehumidification. These approaches will allow the use of cellulose and fiberglass insulation systems rather than the current approaches that rely on rigid insulation or spray polyurethane foams. PDF icon Unvented Roof Assemblies More

  8. Building America Envelope and Advanced HVAC Research | Department of Energy

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

    Envelope and Advanced HVAC Research Building America Envelope and Advanced HVAC Research Lead Performer: Oak Ridge National Laboratory (ORNL) - Oak Ridge, TN Project Term: FY 2016 - FY 2018 Funding Type: Direct Lab Funding PROJECT OBJECTIVE ORNL's work in roof and attic research will address the industry need for clear guidance on unvented attics. The wall assemblies research involves a comprehensive evaluation of high-R assemblies. This research supports the Lab and Field Moisture Risk

  9. Building America Top Innovations Hall of Fame Profile … Attic...

    Energy Savers [EERE]

    Terminology Air Barrier Material (ABM) --- A does not allow air to pass throu plywoodOSB, foam board, duc lumber. Backing --- Any material that s be sprayed so as to provide an ...

  10. Roofs | 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...

  11. Building America Case Study: Cost Analysis of Roof-Only Air Sealing and Insulation Strategies on 1-1/2 Story Homes in Cold Climates, Minneapolis, MN (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-12-01

    The External Thermal and Moisture Management System (ETMMS), typically seen in deep energy retrofits, is a valuable approach for the roof-only portions of existing homes, particularly the 1 1/2-story home. It is effective in reducing energy loss through the building envelope, improving building durability, reducing ice dams, and providing opportunities to improve occupant comfort and health.

  12. TASK 2.5.4 DEVELOPMENT OF AN ENERGY SAVINGS CALCULATOR

    SciTech Connect (OSTI)

    Miller, William A; New, Joshua Ryan; Desjarlais, Andre Omer; Huang, Joe; Erdem, Ender; Ronnen, Levinson

    2010-03-01

    California s major energy utilities and the California Energy Commission (CEC) are seeking to allocate capital that yields the greatest return on investment for energy infrastructure that meets any part of the need for reliable supplies of energy. The utilities are keenly interested in knowing the amount of electrical energy savings that would occur if cool roof color materials are adopted in the building market. To meet this need the Oak Ridge National Laboratory and the Lawrence Berkeley National Laboratory (LBNL) have been collaborating on a Public Interest Energy Research (PIER) project to develop an industry-consensus energy-savings calculator. The task was coordinated with an ongoing effort supported by the DOE to develop one calculator to achieve both the DOE and the EPA objectives for deployment of cool roof products. Recent emphasis on domestic building energy use has made the work a top priority by the Department of Energy s (DOE) Building Technologies Program. The Roof Savings Calculator (RSC) tool is designed to help building owners, manufacturers, distributors, contractors and practitioners easily run complex simulations. The latest web technologies and usability design were employed to provide an easy input interface to an annual simulation of hour-by-hour, whole-building performance using the world-class simulation tools DOE-2.1E and AtticSim. Building defaults were assigned based on the best available statistical evidence and can provide energy and cost savings after the user selects nothing more than the building location. A key goal for the tool is to promote the energy benefits of cool color tile, metal and asphalt shingle roof products and other energy saving systems. The RSC tool focuses on applications for the roof and attic; however, the code conducts a whole building simulation that puts the energy and heat flows of the roof and attic into the perspective of the whole house. An annual simulation runs in about 30 sec. In addition to cool reflective roofs, the RSC tool will simulate high- medium- and low-slope roofs, and has a custom selection for the user whose house has a unique inclination. There is an option for above sheathing ventilation, which is prevalent in tile and stone-coated metal roof assemblies. The tool also accommodates the effects of radiant barriers and low-emittance surfaces in the inclined air space above the sheathing. The practitioner can select to have air-conditioning ducts either in the conditioned space or in the attic. If in the attic, the user can select one of three air leakage options. Option 1 is an inspected duct having 4% leakage and code level of duct insulation; option 2 is a poorly insulated duct having 14% air leakage; and option 3 is a custom leakage rate specified by the user. The practitioner can setup multiple layers of ceiling insulation. AtticSim is benchmarked against the field data acquired for Ft. Irwin located near Barstow, CA, first as a standalone simulation program and then again integrated within the DOE-2.1E program. The standalone benchmark was very useful to determining how well AtticSim replicates the building physics of an attic. The coupled benchmark was useful to verify that the DOE-2.1E/AtticSim code is modeling correctly the dynamic relationship between the attic and the occupied space below, as well as the interactions between the attic and the HVAC system, in particular when the ducts are located in the attic.

  13. Building America Whole-House Solutions for New Homes: Green Coast Enterprises, New Orleans, Louisiana

    Broader source: Energy.gov [DOE]

    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 strapping, roofing membrane, and closed-cell spray foam in attic, walls, and under floor.

  14. Best Practices Case Study: Tindall Homes - Princeton, NJ, Legends at Mansfield, Columbus, NJ

    SciTech Connect (OSTI)

    2011-09-01

    Case Study of Tindall Homes, who worked with Building America to design an optimal package including advanced framing, insulated precast concrete basement walls, polyurethane foam in the walls, and R-49 of batt plus blown cellulose in the attics. Some homes included a detached garden shed with photovoltaic panel-covered roofs.

  15. DOE ZERH Case Study: High Performance Homes, Chamberlain Court #75, Gettysburg, PA

    SciTech Connect (OSTI)

    none,

    2015-09-01

    Case study of a DOE 2015 Housing Innovation Award winning production home in the cold climate that got a HERS 37 without PV, or HERS 23 with PV, with R-24 SIP walls, Basement with R-10 under slab, and R-15 unfaced batt on walls, sealed attic with R-49 ocsf under roof deck; ground source heat pump COP 4.4.

  16. 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.

  17. Update on R-Value Measurements @ NCERC (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Visit OSTI to utilize additional information resources in energy science and technology. A ... - 2012-07-12 ; Albuquerque, New Mexico, United States Research Org: Los Alamos ...

  18. Geologic investigation of roof and floor strata: longwall demonstration, Old Ben Mine No. 24. Prediction of coal balls in the Herrin Coal. Final technical report: Part 2. [Mineralized peat balls

    SciTech Connect (OSTI)

    DeMaris, P.J.; Bauer, R.A.; Cahill, R.A.; Damberger, H.H.

    1983-04-01

    Coal-ball areas, large deposits of mineralized peat in the coal seam, obstructed longwall mining in the Herrin Coal at Old Ben Mine No. 24. In-mine mapping located coal balls under transitional roof - areas where the roof lithology alternates between the Energy Shale and the Anna Shale/Brereton Limestone. Specifically, coal balls occur under eroded exposures or windows of the marine Anna Shale/Brereton Limestone in the Energy Shale. Two types of coal-ball areas have been identified, based on stratigraphic position in the coal seam: type I is restricted to the top of the seam, and type II occurs at midseam and below. To predict the distribution of coal balls, as well as explain their formation, a depositional model was developed: First, freshwater sediments buried the Herrin peat. Decomposition of the sealed peat continued, producing high CO/sub 2/ partial pressures; then selective erosion took place as a river removed the cover along sinuous paths, cutting through to the peat in some places. With the seal broken, CO/sub 2/ was released, and freshwaters that contained Ca and Mg ions flushed out organic acids. Later, marine mud buried both the freshwater sediments and the exposed peat, which accounts for the transitional roof over the Herrin Coal and the coal balls under the marine shale windows in the Energy Shale. The depositional model was supported by the first comprehensive set of geochemical data for coal balls. Coal balls generally contained less than 4 percent organic carbon and very low levels of detrital minerals. Although individual sites of concentrated coal balls cannot be predicted, the specific linear roof exposures associated with these coal-ball areas can be identified by mapping. Based on previously mapped areas, the trends of these linear exposures can be projected.

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

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

    Ducts in Hot-Dry Climates | Department of Energy 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 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

  20. Accelerated Aging of Roofing Surfaces

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

    ... Sample 1: White Single-Ply Membrane, 5 Degree Tilt LBNL, Arizona LBNL, Florida LBNL, Ohio ... Budget History FY2010 FY2011 FY2012 DOE Cost-share DOE Cost-share DOE Cost-share 600K ...

  1. Unvented Roofs - Air Permeable Insulation

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

    Owens Corning Dupont Johns Manville David Weekley Homes K. Hovnanian Homes Project Goal: ... and Collaborators: Manufacturing partners are Owens Corning, Johns Manville and Dupont. ...

  2. Measure Guideline: Implementing a Plenum Truss for a Compact Air Distribution System

    SciTech Connect (OSTI)

    Burdick, A.

    2013-10-01

    This Measure Guideline presents the steps to implement a compact duct system inside an attic bulkhead (plenum truss) of a one-story, slab-on-grade (SOG) home. In a compact duct design, ductwork runs are reduced in length to yield a smaller and more compact duct system. Less energy will be lost through ductwork if the ducts are contained within the thermal enclosure of the house. These measures are intended for the production builder working to meet the 2012 International Energy Conservation Code (IECC) requirements and keep the ductwork within the thermal enclosure of the house. This measure of bringing the heating, ventilation and air conditioning (HVAC) equipment and ductwork within the thermal enclosure of the house is appropriate for the builder wishing to avoid cathedralizing the insulation in the attic space (i.e., locating it at the underside of the roof deck rather than along the attic floor) or adding dropped soffits.

  3. Measure Guideline: Implementing a Plenum Truss for a Compact Air Distribution System

    SciTech Connect (OSTI)

    Burdick, A.

    2013-10-01

    This Measure Guideline presents the steps to implement a compact duct system inside an attic bulkhead (plenum truss) of a one-story, slab-on-grade home. In a compact duct design, ductwork runs are reduced in length to yield a smaller and more compact duct system. Less energy will be lost through ductwork if the ducts are contained within the thermal enclosure of the house. These measures are intended for the production builder working to meet the 2012 International Energy Conservation Code (IECC) requirements and keep the ductwork within the thermal enclosure of the house. This measure of bringing the heating, ventilation and air conditioning (HVAC) equipment and ductwork within the thermal enclosure of the house is appropriate for the builder wishing to avoid cathedralizing the insulation in the attic space (i.e., locating it at the underside of the roof deck rather than along the attic floor) or adding dropped soffits.

  4. DOE ZERH Case Study: Heirloom Design Build, Euclid Avenue, Atlanta, GA

    SciTech Connect (OSTI)

    none,

    2015-09-01

    Case study of a DOE 2015 Housing Innovation Award winning custom home in the mixed-humid climate that got a HERS 50 without PV, with 2x6 16” on center walls with R-19 ocsf; basement with R-28 ccsf, R-5 rigid foam under slab; sealed attic with R-28 ocsf under roof deck; 22.8 SEER; 12.5 HSPF heat pump.

  5. Best Practices Case Study: John Wesley Miller Companies - Armory Park Del Sol, Tucson, AZ

    SciTech Connect (OSTI)

    2009-10-01

    Case study of John Wesley Miller Companies, who built two net zero energy homes plus 97 other solar homes in Tucson, AZ. Masonry block walls with rigid foam exterior sheathing, rigid foam over the roof deck plus R-38 in the attic, ducts in conditioned space, 4.2 kW and 5.7 kW photovoltaics and solar water heating yielded HERS scores of 0 on the two homes.

  6. Best Practices Case Study: CDC Realty, Inc. - Centennial Terrace, Tucson, AZ

    SciTech Connect (OSTI)

    2009-10-01

    Case study on CDC Realty who achieved HERS 70 by putting ducts in a conditioned attic insulated along the roofline with netted cellulose, R-5 rigid insulated sheathing over R-19 wall cavity insulation, and deep overhangs and low-e windows to minimize solar heat gain. The 17 homes are solar-ready for solar water heating and five have integral collector storage hot water systems on the roof.

  7. Oregon School District Benefits from Energy Improvements | Department of

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

    Energy Oregon School District Benefits from Energy Improvements Oregon School District Benefits from Energy Improvements February 29, 2016 - 2:53pm Addthis Before-and-after scenes of the energy-saving renovations at Oregon's Lowell School District in summer 2015. Upgrades included insulation of attics and exterior walls, roof replacements, and removal and replacement of asbestos siding. Before-and-after scenes of the energy-saving renovations at Oregon's Lowell School District in summer

  8. DOE ZERH Case Study: Mandalay Homes, Vision Hill Lot 1, Glendale, AZ

    SciTech Connect (OSTI)

    none,

    2015-09-01

    Case study of a DOE 2015 Housing Innovation Award winning production home in the hot-dry climate that got a HERS 52 without PV, or HERS -2 with PV, with 2x6 16” on center walls with R-14 ocsf plus R-4 rigid exterior; slab on grade with R-8 slab edge; sealed attic with R-31 ocsf under roof deck; 92 AFUE furnace, 15 SEER AC, 100% LED.

  9. DOE ZERH Case Study: KB Home, Double ZeroHouse 3.0, El Dorado Hill, CA

    SciTech Connect (OSTI)

    none,

    2015-09-01

    Case study of a DOE 2015 Housing Innovation Award winning production home in the mixed-dry climate that got a HERS 44 without PV, or HERS -2 with PV, with 2x4 walls 16” on center walls with R-15 cavity plus 1” EPS exterior rigid foam, slab on grade with R-10 slab edge; unvented attic with R-38 blown fiberglass netted to underside of roof deck; 19 SEER heat pump; heat pump water heater; 100% LED.

  10. DOE ZERH Case Study: United Way of Long Island Housing Development Corporation, Patchogue, NY

    SciTech Connect (OSTI)

    none,

    2015-09-01

    Case study of a DOE 2015 Housing Innovation Award winning affordable home in the mixed-humid climate that got HERS 40 without PV, -3 with PV, with 2x4 16: on center walls with R-13.5 dense packed cellulose and 1.5” polyiso rigid; basement with 2.5: polyiso on interior; unvented attic with R-48 ocsf under roof deck; ERV tied to wall hung boiler with hydro coil.

  11. DOE ZERH Case Study: Habitat for Humanity South Sarasota, Laurel Gardens #794, Nakomis, FL

    SciTech Connect (OSTI)

    none,

    2015-09-01

    Case study of a DOE 2015 Housing Innovation Award winning affordable home in the hot-humid climate that got a HERS 51 without PV, with foam-filled masonry block walls with .75” rigid foam, furring strips, and foil-faced paper on interior walls; R-20 ocsf in roof of sealed attic, uninsulated slab, 15 SEER 8.0 HSPF heat pump walls for heating and cooling, heat pump water heater.

  12. DOE Zero Energy Ready Home Case Study: United Way of Long Island Housing Development Corporation, Patchogue, NY

    Broader source: Energy.gov [DOE]

    Case study of a DOE 2015 Housing Innovation Award winning affordable home in the mixed-humid climate that got HERS 40 without PV, -3 with PV, with 2x4 16: on center walls with R-13.5 dense packed cellulose and 1.5” polyiso rigid; basement with 2.5: polyiso on interior; unvented attic with R-48 ocsf under roof deck; ERV tied to wall hung boiler with hydro coil.

  13. DOE Zero Energy Ready Home Case Study: Durable Energy Builders - Houston, Texas

    SciTech Connect (OSTI)

    none,

    2014-11-01

    This case study describes a DOE Zero Energy Ready Home in Houston, Texas, that scored HERS 39 without PV and HERS 29 with PV. This 5,947 ft2 custom home has 11.5-inch ICF walls. The attic is insulated along the roof line with 5 to 7 inches of open-cell spray foam. Most of the home's drinking water is supplied by a 11,500-gallon rainwater cistern. Hurricane strapping connects the roof to the walls. The triple-pane windows are impact resistant. The foundation is a raised slab.

  14. Radiant barrier testing to assess effects of dust accumulation, attic ventilation, and other key variables

    SciTech Connect (OSTI)

    Hall, J.A.

    1988-07-01

    This report summarized the work accomplished during the fifth season of testing at TVA's EUTF. Previously, tests were conducted at the EUTF during the 1985/1986 summer and winter and the 1986/1987 summer and winter. This previous work at TVA, and work at the University of Mississippi, the FSEC, Texas A and M, and ORNL, have shown that in the summer: all RB installation locations provide large reductions in ceiling heat flux when used with R11 and R19 fiberglass, cellulose, or rock wool; reductions in ceiling heat flux from RBs when used with R30 are not nearly as large as from RBs when used with R19; the RBR and RBT provide sizable reductions in whole-house cooling loads; and the RBT provides the largest reduction in ceiling heat flux in most cases. Previous work has shown that in the winter: the RBT provides moderate ceiling heat flux reductions and whole-house heating load saving with R11 and R19 fiberglass, cellulose, or rock wool; the RBR shows very little reduction in ceiling heat flux in most cases; and reductions in ceiling heat flux with R30 are usually much less than with R11 or R19 insulation. 12 refs., 14 figs., 11 tabs.

  15. Moisture-Safe Unvented Wood Roof Systems

    SciTech Connect (OSTI)

    John Straube

    2010-04-20

    This paper describes a hygrothermal modeling study, including all of the US climate zones, a range of interior humidity levels and numerous arrangements and types of insulation.

  16. Energy 101: Cool Roofs | Department of Energy

    Energy Savers [EERE]

    Department of Energy Encouraging Innovation for New Cybersecurity Technologies and Techniques Encouraging Innovation for New Cybersecurity Technologies and Techniques March 31, 2015 - 3:28pm Addthis Patricia A. Hoffman Patricia A. Hoffman Assistant Secretary, Office of Electricity Delivery & Energy Reliability Protecting the nation's energy infrastructure from all hazards, including the cyber threat, is fundamental to the mission of the Office of Electricity Delivery and Energy

  17. Urban Heat Islands: Cool Roof Infrastructure

    Broader source: Energy.gov [DOE]

    Lead Performer: Lawrence Berkeley National Laboratory - U.S.-China Clean Energy Research Center Project Partners: -- Guangdong Provincial Academy of Building Research - Guangdong, China -- Chongqing University - Chongqing, China -- Research Institute of Standards and Norms - China -- Chinese Academy of Sciences - Beijing, China

  18. Hawaii Marine Base Installs Solar Roofs

    Broader source: Energy.gov [DOE]

    Harnessing sunlight to create renewable electricity at Hawaii's Marine Corps Base was considered too expensive to be practical -- until 2008.

  19. Metal Roofing Alliance (MRA) | Open Energy Information

    Open Energy Info (EERE)

    About Partnership with NREL Partnership with NREL Yes Partnership Type Test & Evaluation Partner Partnering Center within NREL Electricity Resources & Building Systems...

  20. OUT Success Stories: Solar Roofing Shingles

    DOE R&D Accomplishments [OSTI]

    Johnson, N.

    2000-08-01

    Thin-film photovoltaic (PV) cells are now doubling as rooftop shingles. PV shingles offer many advantages. The energy generated from a building's PV rooftop shingles can provide power both to the building and the utility's power grid.

  1. Gas safety roof gauging control hatch adapter

    SciTech Connect (OSTI)

    Overstreet, R.J.

    1980-04-15

    A gas safety control hatch is disclosed which is attached to the top of a crude oil storage or stock tank. The hatch has a lid which can be opened to enable the contents of the stock tank to be gauged. A liquid lock apparatus is provided between the interior of the hatch and the interior of the stock tank. The liquid lock comprises a downwardly extending conduit having one end opened into the hatch and the other end opened in proximity of the bottom of the stock tank so that liquid always covers the lower, marginal end of the conduit whenever any appreciable amount of crude is stored in the stock tank. Accordingly, when the lid of the hatch is opened, no obnoxious fumes from the vapor space within the tank can flow into the hatch; and accordingly, the tank can be safely gauged by running a sampling apparatus down through the conduit and into communication with the liquid phase of the tank contents.

  2. Cool Roofs Lead to Cooler Cities

    Broader source: Energy.gov [DOE]

    Want to know more about one of the quickest and lowest cost ways we can reduce our carbon footprint and slow climate change? Read this.

  3. Webinar: Evaluating Roof Structures for Solar PV

    Broader source: Energy.gov [DOE]

    This webinar provides an overview of Connecticut's Structural Review Worksheet for Residential Rooftop Solar PV Systems. The webinar explains how the worksheet should be used and common concerns with wind and dead loads for rooftop solar PV.

  4. DOE Zero Energy Ready Home Case Study: Weiss Building & Development LLC.,

    Energy Savers [EERE]

    Glendale, AZ | Department of Energy Vision Hill Lot 1, Glendale, AZ DOE Zero Energy Ready Home Case Study: Mandalay Homes, Vision Hill Lot 1, Glendale, AZ Case study of a DOE 2015 Housing Innovation Award winning production home in the hot-dry climate that got a HERS 52 without PV, or HERS -2 with PV, with 2x6 16" on center walls with R-14 ocsf plus R-4 rigid exterior; slab on grade with R-8 slab edge; sealed attic with R-31 ocsf under roof deck; 92 AFUE furnace, 15 SEER AC, 100% LED.

  5. DOE Zero Energy Ready Home Case Study: Habitat for Humanity South Sarasota

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

    County, Nokomis, FL | Department of Energy Sarasota County, Nokomis, FL DOE Zero Energy Ready Home Case Study: Habitat for Humanity South Sarasota County, Nokomis, FL DOE Zero Energy Ready Home Case Study: Habitat for Humanity South Sarasota County, Nokomis, FL Case study of a DOE Zero Energy Ready affordable home in Nokomis, FL, achieves a HERS 51 without PV. The 1,290-ft2 1-story home has foam-filled concrete block walls, a sealed attic insulated under the roof deck with open-cell spray

  6. DOE Zero Energy Ready Home Case Study: Habitat for Humanity South Sarasota,

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

    Laurel Gardens #794, Nakomis, FL | Department of Energy Sarasota, Laurel Gardens #794, Nakomis, FL DOE Zero Energy Ready Home Case Study: Habitat for Humanity South Sarasota, Laurel Gardens #794, Nakomis, FL Case study of a DOE 2015 Housing Innovation Award winning affordable home in the hot-humid climate that got a HERS 51 without PV, with foam-filled masonry block walls with .75" rigid foam, furring strips, and foil-faced paper on interior walls; R-20 ocsf in roof of sealed attic,

  7. DOE Zero Energy Ready Home Case Study: Heirloom Design Build, Euclid

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

    Avenue, Atlanta, GA | Department of Energy Heirloom Design Build, Euclid Avenue, Atlanta, GA DOE Zero Energy Ready Home Case Study: Heirloom Design Build, Euclid Avenue, Atlanta, GA Case study of a DOE 2015 Housing Innovation Award winning custom home in the mixed-humid climate that got a HERS 50 without PV, with 2x6 16" on center walls with R-19 ocsf; basement with R-28 ccsf, R-5 rigid foam under slab; sealed attic with R-28 ocsf under roof deck; 22.8 SEER; 12.5 HSPF heat pump. PDF

  8. DOE Zero Energy Ready Home Case Study: Mandalay Homes, Vision Hill Lot 1,

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

    Glendale, AZ | Department of Energy Vision Hill Lot 1, Glendale, AZ DOE Zero Energy Ready Home Case Study: Mandalay Homes, Vision Hill Lot 1, Glendale, AZ Case study of a DOE 2015 Housing Innovation Award winning production home in the hot-dry climate that got a HERS 52 without PV, or HERS -2 with PV, with 2x6 16" on center walls with R-14 ocsf plus R-4 rigid exterior; slab on grade with R-8 slab edge; sealed attic with R-31 ocsf under roof deck; 92 AFUE furnace, 15 SEER AC, 100% LED.

  9. DOE Zero Energy Ready Home Case Study: The Imery Group, Serenbe, GA |

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

    Department of Energy The Imery Group, Serenbe, GA DOE Zero Energy Ready Home Case Study: The Imery Group, Serenbe, GA Case study of a DOE Zero Energy Ready home in Serenbe, GA, that scored a HERS 40 without PV or HERS -10 with PV. The 2,811-ft2, two-story custom home has 2x6, advanced framed walls filled with R-20 of open-cell spray foam, plus an R-6.6 insulated coated OSB sheathing. The sealed attic has R-32 of open-cell spray foam on the underside of the roof deck plus R-5 rigid foam above

  10. Energy efficiency study of single-wide manufactured homes

    SciTech Connect (OSTI)

    Yarbrough, D.W.; Andrews, G.J.; Stovall, T.K.; Kelly, T.

    1999-12-01

    This Cooperative Research and Development Agreement (CRADA) was among Tennessee Technological University, Clayton Homes, Inc., and Oak Ridge National Laboratory (ORNL). Manufactured homes now make up a substantial portion of the new home market, and improving the energy efficiency of these homes would save significant amounts of energy. This project explored the impact of differing levels of attic insulation, the use of evacuated insulation panels, and the application of a solar reflective roof coating. The performance of the installed roof cavity insulation compared favorably with that predicted by laboratory measurements. The more heavily insulated of the two units used about 30% less energy over the period of the project than the standard unit. Based on the experimental data, computer simulations for nine cities were completed for a single-wide manufactured home with the solar reflective roof coating. Annual electric power savings ranged from 894 kWh in Rapid City to 2119 kWh for the same roof area in Los Angeles. The field performance of vacuum insulation panels was compared with laboratory performance. The panels will perform as expected if protected from puncture.

  11. What's on your Roof? Rooftop Unit (RTU) Efficiency Advice and...

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

    Did you know that rooftop unit (RTU) air conditioners serve cooling to 60% of U.S. commercial building floor space? Odds are high that you've worked from, shopped at, or eaten in ...

  12. Maui County - Solar Roofs Initiative Loan Program | Department...

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

    program and, through the Hawaii Energy Rebate Program, offers a 1,000 rebate for installations through its approved independent solar contractors. Residential homeowners with...

  13. NNSA Commitment to Energy Efficiency: Promoting Cool Roof Technologies...

    National Nuclear Security Administration (NNSA)

    This Site Budget IG Web Policy Privacy No Fear Act Accessibility FOIA Sitemap Federal Government The White House DOE.gov USA.gov Jobs Apply for Our Jobs Our Jobs Working at NNSA...

  14. Fourier analysis of conductive heat transfer for glazed roofing...

    Office of Scientific and Technical Information (OSTI)

    of mathematical sciences education and research towards global sustainability, Penang ... Country of Publication: United States Language: English Subject: 42 ENGINEERING; 71 ...

  15. Excavation roof support and method of installing the same

    SciTech Connect (OSTI)

    Bohnes, K.; Fitzgerald, H.J.; Koppers, M.

    1981-07-07

    A method and a system are disclosed for supporting an overburden. A single-section or telescoped multi-section longitudinally slit prop casing of light sheet material such as cardboard or metal has a fabric bag installed in it. When the casing is erected the bag is filled with a slurry of hardenable substance which, upon hardening, forms in the bag a column which supports the overburden. The casing may be left in place or it may be removed for re-use.

  16. Fluorescent Pigments for High-Performance Cool Roofing

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

    techniques, including combustion synthesis; then characterize their absorbance, ... pigment (Al 2 O 3 :Cr) via combustion synthesis * Kingsley et al. recipe * Metal ...

  17. City of Grand Rapids Building Solar Roof Demonstration

    SciTech Connect (OSTI)

    DeClercq, Mark; Martinez, Imelda

    2012-08-31

    Grand Rapids, Michigan is striving to reduce it environmental footprint. The municipal government organization has established environmental sustainability policies with the goal of securing 100% of its energy from renewable sources by 2020. This report describes the process by which the City of Grand Rapids evaluated, selected and installed solar panels on the Water/Environmental Services Building. The solar panels are the first to be placed on a municipal building. Its new power monitoring system provides output data to assess energy efficiency and utilization. It is expected to generate enough clean solar energy to power 25 percent of the building. The benefit to the public includes the economic savings from reduced operational costs for the building; an improved environmentally sustainable area in which to live and work; and increased knowledge about the use of solar energy. It will serve as a model for future energy saving applications.

  18. Seismic Evidence For A Hydrothermal Layer Above The Solid Roof...

    Open Energy Info (EERE)

    are formed by cooling and crystallization of melt in magma chambers. Authors S. C. Singh, J. S. Collier, A. J. Harding, G. M. Kent and J. A. Orcutt Published Journal Publisher Not...

  19. Flourescent Pigments for High-Performance Cool Roofing and Facades...

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

    After boiling and then combustion, a fluorescent red pigment is formed. Image: University ... After boiling and then combustion, a fluorescent red pigment is formed. Image: University ...

  20. Fluorescent Pigments for High-Performance Cool Roofing and Facades...

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

    After boiling and then combustion, a fluorescent red pigment is formed. Image: University ... After boiling and then combustion, a fluorescent red pigment is formed. Image: University ...

  1. Weathering of Roofing Materials-An Overview (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    of wood, acceleration of corrosion of metals, staining of clay, and freeze-thaw damage. ... Report Number(s): LBNL--59724 Journal ID: CBUMEZ; R&D Project: EK264L; TRN: US200813%%207 ...

  2. Stay-Clean and Durable White Elastomeric Roof Coatings (ERCs...

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

    Ronnen Levinson RMLevinson@LBL.gov Lawrence Berkeley National Laboratory Project ... * Demonstration in the US, China, Brazil, India and other countries through ongoing ...

  3. Project Profile: Innovative Ballasted Flat Roof Solar Photovoltaic Racking System

    Broader source: Energy.gov [DOE]

    A 2010 Rocky Mountain Institute report estimated that structural systems alone cost about $0.95 per watt for rooftop installations. Cascade is developing a plastic-based photovoltaic (PV) racking...

  4. New Cool Roof Coatings and Affordable Cool Color Asphalt

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

    ... Accomplishment - Microbial Field Sampling Protocol 8 | Building Technologies Office eere.energy.gov * From the sequenced fungal DNA, 26 were successfully sequenced. NCBI BLAST ...

  5. Self advancing mine roof supports (Patent) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    for a face-conveyor and a transversely acting transfer conveyor whereby their relative positions are constrained to facilitate discharge of mineral from one conveyor to the other. ...

  6. Green Roofs - Federal Technology Alert | Department of Energy

    Energy Savers [EERE]

    Technology Alert Federal Technology Alert provides summary information on candidate energy-saving technologies. ftagreenroofs.pdf More Documents & Publications Guidelines...

  7. Covered Product Category: Cool Roof Products | Department of...

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

    ... GSA sells products through its Multiple Awards Schedules and GSA Advantage DLA offers products through the Defense Supply Center Philadelphia and DOD EMALL. Lawrence Berkeley ...

  8. Cooling and Heating Season Impacts of Right-Sizing of Fixed- and Variable-Capacity Heat Pumps With Attic and Indoor Ductwork

    SciTech Connect (OSTI)

    Cummings, James; Withers, Charles; Kono, Jamie

    2015-06-24

    A new generation of full variable-capacity air-conditioning (A/C) and heat pump units has come on the market that promises to deliver very high cooling and heating efficiency. The units are controlled differently than standard single-capacity (fixed-capacity) systems. Instead of cycling on at full capacity and cycling off when the thermostat is satisfied, the new units can vary their capacity over a wide range (approximately 40%–118% of nominal full capacity) and stay on for 60%–100% more hours per day than the fixed-capacity systems depending on load-to-capacity ratios. Two-stage systems were not evaluated in this research effort.

  9. Cooling and Heating Season Impacts of Right-Sizing of Fixed- and Variable-Capacity Heat Pumps With Attic and Indoor Ductwork

    SciTech Connect (OSTI)

    Cummings, James; Withers, Charles; Kono, Jamie

    2015-06-01

    ​A new generation of central, ducted variable-capacity heat pump systems has come on the market, promising very high cooling and heating efficiency. They are controlled differently than standard fixed-capacity systems. Instead of cycling on at full capacity and then cycling off when the thermostat is satisfied, they vary their cooling and heating output over a wide range (approximately 40% - 118% of nominal full capacity), thus staying 'on' for 60% - 100% more hours per day compared to fixed -capacity systems. Experiments in this research examined the performance of 2-ton and 3-ton fixed- and variable-capacity systems and the impacts of system oversizing.

  10. Building America Top Innovations 2013 Profile … Exterior Rigid Insulation Best Practices

    Energy Savers [EERE]

    Exterior Rigid Insulation Best Practices TOP INNOVATOR: BSC, PHI, NorthernSTAR Field studies by Building America's research teams show the most effective ways to take advantage of the thermal, air, and vapor resistance properties of rigid foam insulation on walls, roofs, and foundations. Building America has been advocating the use of rigid foam sheathing insulation for years as a means to improve the home's thermal envelope by increasing R-value while minimizing thermal bridging in wood-framed

  11. Numerical analysis of heat transfer by conduction and natural convection in loose-fill fiberglass insulation--effects of convection on thermal performance

    SciTech Connect (OSTI)

    Delmas, A.A.; Wilkes, K.E.

    1992-04-01

    A two-dimensional code for solving equations of convective heat transfer in porous media is used to analyze heat transfer by conduction and convection in the attic insulation configuration. The particular cases treated correspond to loose-fill fiberglass insulation, which is characterized by high porosity and air permeability. The effects of natural convection on the thermal performance of the insulation are analyzed for various densities, permeabilities, and thicknesses of insulation. With convection increasing the total heat transfer through the insulation, the thermal resistance was found to decrease as the temperature difference across the insulating material increases. The predicted results for the thermal resistance are compared with data obtained in the large-scale climate simulator at the Roof Research Center using the attic test module, where the same phenomenon has already been observed. The way the wood joists within the insulation influence the start of convection is studied for differing thermophysical and dynamic properties of the insulating material. The presence of wood joists induces convection at a lower temperature difference.

  12. Buried and Encapsulated Ducts- Building America Top Innovation

    Broader source: Energy.gov [DOE]

    This Top Innovation profile highlights Building America research into insulating ductwork that is in unconditioned attics.

  13. Buildings Energy Data Book: 2.6 Residential Home Improvement

    Buildings Energy Data Book [EERE]

    6 2010-2011 National Professional Remodeling Cost and Amount Recouped in Resale Value Envelope Siding Replacement - Vinyl 11.4 8.2 72% Window Replacement - Vinyl 11.1 7.9 72% Window Replacement - Wood 12.0 8.7 72% Roofing Replacement 21.5 12.8 60% Entry Door Replacement - Fiberglass 3.6 2.1 60% Entry Door Replacement - Steel 1.2 1.2 102% Remodel Minor Kitchen Remodel 21.7 15.8 73% Major Kitchen Remodel 58.4 40.1 69% Bathroom Remodel 16.6 10.7 64% Attic Bedroom Remodel 51.4 37.1 72% Basement

  14. Reducing Thermal Losses and Gains With Buried and Encapsulated Ducts in Hot-Humid Climates

    SciTech Connect (OSTI)

    Shapiro, C.; Magee, A.; Zoeller, W.

    2013-02-01

    The Consortium for Advanced Residential Buildings (CARB) monitored three houses in Jacksonville, FL, to investigate the effectiveness of encapsulated and encapsulated/buried ducts in reducing thermal losses and gains from ductwork in unconditioned attics. Burying ductwork beneath loose-fill insulation has been identified as an effective method of reducing thermal losses and gains from ductwork in dry climates, but it is not applicable in humid climates where condensation may occur on the outside of the duct jacket. By encapsulating the ductwork in closed cell polyurethane foam (ccSPF) before burial beneath loose-fill mineral fiber insulation, the condensation potential may be reduced while increasing the R-value of the ductwork.

  15. 15 Minutes of Building Science

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

    As A System House As A System House As A System Air Leaks to Attic Air Leaks to Attic Anatomy of an Ice Dam House As A System House As A System House As A System * Build Tight - ...

  16. IID Energy - Residential Energy Efficiency Rebate Program | Department...

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

    0.30sq ft Electric Attic Fan: 75 Solar Attic Fan: 125 Refrigerator: 75unit Room Air Conditioner: 100unit Dual Pane Windows: 2.00sq ft Variable Speed Pool Pumps:...

  17. Buildings Energy Data Book: 9.4 High Performance Buildings

    Buildings Energy Data Book [EERE]

    3 Case Study, The Visitor Center at Zion National Park, Utah (Service/Retail/Office) Building Design Vistors Center (1): 8,800 SF Comfort Station (2): 2,756 SF Fee Station: 170 SF Shell Windows Type U-Factor SHGC (3) South/East Glass Double Pane Insulating Glass, Low-e, Aluminum Frames, Thermally Broken 0.44 0.44 North/West Glass Double Pane Insulating Glass, Heat Mirror, Aluminum Frames, Thermally Broken 0.37 0.37 Window/Wall Ratio: 28% Wall/Roof Materials Effective R-Value Trombe Walls:

  18. Buildings Energy Data Book: 9.4 High Performance Buildings

    Buildings Energy Data Book [EERE]

    5 Case Study, The Thermal Test Facility, National Renewable Energy Laboratory, Golden, Colorado (Office/Laboratory) Building Design Floor Area: 10,000 SF Floors(1): 2 Aspect Ratio: 1.75 Offices Laboratories Conference Room Mechanical Level Shell Windows Material U-factor SHGC(2) Viewing Windows: Double Pane, Grey Tint, Low-e 0.42 0.44 Clerestory Windows: Double Pane, Clear, Low-e 0.45 0.65 Window Area(SF) North 38 South(3) 1,134 East 56 West 56 Wall/Roof Material Effective R-Value North Wall

  19. Buildings Energy Data Book: 9.4 High Performance Buildings

    Buildings Energy Data Book [EERE]

    2 Case Study, The Cambria Department of Environmental Protection Office Building, Ebensburg, Pennsylvania (Office) Building Design Floor Area: Floors: 2 Open office space (1) File storage area Two small labratories Conference rooms Break room Storage areas Two mechanical rooms Telecom room Shell Windows Material: Triple Pane, low-e with Aluminum Frames and Wood Frames Triple Pane Triple Pane Aluminum Frames Wood Frames U-Factor 0.24 U-Factor 0.26 Wall/Roof Primary Material R-Value Wall :

  20. Buildings Energy Data Book: 9.4 High Performance Buildings

    Buildings Energy Data Book [EERE]

    6 Case Study, The Solaire, New York, New York (Apartments/Multi-Family) Building Design Floor Area: 357,000 SF Units: 293 Maximum Occupancy: 700 Floors: 27 Site Size: 0.38 Acres Typical Occupancy(1): 578 Black-Water Treatment Facility (2) Shell Windows Material: Double Glazed, Low-e, Thermal Breaks with Insulated Spacers Operable Windows Fixed Windows Visual Transminttance 0.68 0.68 Solar Heat Gain Coefficient 0.35 0.35 U-Factor 0.47 0.41 Wall/Roof Material R-Value Exterior Walls: Insulated

  1. Radical Thinkers Needed to Help Get a Solar Panel on Every Roof

    Broader source: Energy.gov [DOE]

    We have approximately $7 million waiting to fund the next big, innovative idea through the SunShot Incubator Program for Soft Cost Reduction. But you have to hurry. The deadline for concept papers is January 16, 2012.

  2. 2010.06.01 S-1 memo, Installation of Cool Roofs on DOE Buildings.pdf

    Energy Savers [EERE]

  3. Cost Analysis of Roof-Only Air Sealing and Insulation Strategies...

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

    energy loss through the building envelope, improving building durability, reducing ice dams, and providing opportunities to improve occupant comfort and health. Authors: Ojczyk,...

  4. Energy Saving 'Cool Roofs' Installed at Y-12 | Y-12 National Security

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

    Cooling Energy Saver 101 Infographic: Home Cooling June 13, 2014 - 5:10pm Addthis Just in time for summer, our new Energy Saver 101 infographic covers everything you need to know about home cooling. Download a <a href="/node/920771">high-resolution version</a> of the home cooling infographic. | Infographic by <a href="/node/379579">Sarah Gerrity</a>, Energy Department. Just in time for summer, our new Energy Saver 101 infographic covers everything you

  5. Using remote sensing to quantify albedo of roofs in seven California...

    Office of Scientific and Technical Information (OSTI)

    2: Results and application to climate modeling Citation Details In-Document Search This content will become publicly available on February 23, 2017 Title: Using remote sensing to ...

  6. Energy Division annual progress report for period ending September 30, 1991

    SciTech Connect (OSTI)

    Stone, J.N.

    1992-04-01

    The Energy Division is one of 17 research divisions at Oak Ridge Laboratory. Its goals and accomplishments are described in this annual progress report for FY 1991. The division`s total expenditures in FY 1991 were $39.1 million. The work is supported by the US Department of Energy, US Department of Defense, many other federal agencies, and some private organizations. Disciplines of the 124 technical staff members include engineering, social sciences, physical and life sciences, and mathematics and statistics. The Energy Division`s programmatic activities focus on three major areas: (1) analysis and assessment, (2) energy conservation technologies, and (3) military transportation systems. Analysis and assessment activities cover energy and resource analysis, the preparation of environmental assessments and impact statements, research on waste management, analysis of emergency preparedness for natural and technological disasters, analysis of the energy and environmental needs of developing countries, technology transfer, and analysis of civilian transportation. Energy conservation technologies include electric power systems, building equipment (thermally activated heat pumps, advanced refrigeration systems, novel cycles), building envelopes (walls, foundations, roofs, attics, and materials), and technical issues for improving energy efficiency in existing buildings. Military transportation systems concentrate on research for sponsors within the US military on improving the efficiency of military deployment, scheduling, and transportation coordination.

  7. Energy Division annual progress report for period ending September 30, 1991

    SciTech Connect (OSTI)

    Stone, J.N.

    1992-04-01

    The Energy Division is one of 17 research divisions at Oak Ridge Laboratory. Its goals and accomplishments are described in this annual progress report for FY 1991. The division's total expenditures in FY 1991 were $39.1 million. The work is supported by the US Department of Energy, US Department of Defense, many other federal agencies, and some private organizations. Disciplines of the 124 technical staff members include engineering, social sciences, physical and life sciences, and mathematics and statistics. The Energy Division's programmatic activities focus on three major areas: (1) analysis and assessment, (2) energy conservation technologies, and (3) military transportation systems. Analysis and assessment activities cover energy and resource analysis, the preparation of environmental assessments and impact statements, research on waste management, analysis of emergency preparedness for natural and technological disasters, analysis of the energy and environmental needs of developing countries, technology transfer, and analysis of civilian transportation. Energy conservation technologies include electric power systems, building equipment (thermally activated heat pumps, advanced refrigeration systems, novel cycles), building envelopes (walls, foundations, roofs, attics, and materials), and technical issues for improving energy efficiency in existing buildings. Military transportation systems concentrate on research for sponsors within the US military on improving the efficiency of military deployment, scheduling, and transportation coordination.

  8. Energy Division progress report, fiscal years 1994--1995

    SciTech Connect (OSTI)

    Moser, C.I.

    1996-06-01

    At ORNL, the Energy Division`s mission is to provide innovative solutions to energy and related issues of national and global importance through interdisciplinary research and development. Its goals and accomplishments are described in this progress report for FY 1994 and FY 1995. The Division`s expenditures in FY 1995 totaled 44.9 million. Sixty percent of the divisions work was supported by the US DOE. Other significant sponsors include the US DOT, the US DOD, other federal agencies, and some private organizations. The Division`s programmatic activities cover three main areas: (1) analysis and assessment, (2) transportation systems, and (3) energy use and delivery technologies. Analysis and assessment activities involve energy and resource analysis, preparation of environmental assessments and impact statements, and impact statements, research on emergency preparedness, analysis of energy and environmental needs in developing countries, and transportation analysis. Transportation systems research seeks to improve the quality of both civilian and military transportation efforts. Energy use and delivery technologies focus on building equipment, building envelopes, (walls, roofs, attics, and materials), improvement of energy efficiency in buildings, and electric power systems.

  9. 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.

  10. Nexus EnergyHomes, Frederick, Maryland (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    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.

  11. Energy Division annual progress report for period ending September 30, 1990

    SciTech Connect (OSTI)

    Selden, R.H.

    1991-06-01

    The Energy Division is one of 17 research divisions at Oak Ridge National Laboratory. The goals and accomplishments of the Energy Division are described in this annual progress report for FY 1990. The Energy Division is a multidisciplinary research organization committed to (1) increasing the knowledge and understanding of how societies make choices in energy use; (2) improving society's understanding of the environmental, social, and economic implications of technological change; (3) developing and transferring energy efficient technologies; and (4) developing improved transportation planning and policy. Disciplines of the 129 staff members include engineering, social sciences, physical and life sciences, and mathematics and statistics. The Energy Division's programmatic activities focus on three major areas: (1) analysis and assessment, (2) energy conservation technologies, and (3) military transportation systems. Analysis and assessment activities cover energy and resource analysis, the preparation of environmental assessments and impact statements, research on waste management, analysis of emergency preparedness for natural and technological disasters, analysis of the energy and environmental needs of developing countries, technology transfer, and analysis of civilian transportation. Energy conservation technologies include building equipment (thermally activated heat pumps, chemical heat pumps, refrigeration systems, novel cycles), building enveloped (walls, foundations, roofs, attics, and materials), retrofits for existing buildings, and electric power systems. Military transportation systems concentrate on research for sponsors within the US military on improving the efficiency of military deployment, scheduling, and transportation coordination. 48 refs., 34 figs., 7 tabs.

  12. RAMP Contractors Enforcement Letter

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

    ... 3. BTA, Royal Roofing Company, Inc., and Bennett & Brosseau Roofing, Inc., did not ... Pantex Plant, on July 28, 2011, during work by BTA and Bennett & Brosseau Roofing, Inc. ...

  13. Building America Efficient Solutions for Existing Homes Case...

    Energy Savers [EERE]

    sealing and insulating exterior walls and attic and installing new, efficient appliances. ... Building America Efficient Solutions for Existing Homes Case Study: Deep Energy Retrofit ...

  14. 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: ...

  15. Columbia Gas of Virginia - Home Savings Rebate Program | Department...

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

    State Virginia Program Type Rebate Program Rebate Amount High Efficiency Gas Furnace: 300 High Efficiency Windows (Replacement): 1sq. ft. Attic Insulation...

  16. Duke Energy - Residential Efficiency Rebate Program | Department...

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

    Pool Pumps: 300 HVACs: up to 200 Ductwork: 175 Attic Insulation: 250 Summary The Smart aver program offers incentives for residential customers to increase the energy...

  17. 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 ...

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

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

    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. ...

  19. Austin Energy - Free Home Energy Improvements Program | Department...

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

    pspresidentialofferings... State Texas Program Type Rebate Program Rebate Amount Free: Attic insulation Minor duct repair and sealing Caulking around plumbing penetrations...

  20. Where to Insulate in a Home | Department of Energy

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

    Insulation » Where to Insulate in a Home Where to Insulate in a Home Examples of where to insulate. 1. In unfinished attic spaces, insulate between and over the floor joists to seal off living spaces below. If the air distribution is in the attic space, then consider insulating the rafters to move the distribution into the conditioned space. (1A) attic access door 2. In finished attic rooms with or without dormer, insulate (2A) between the studs of "knee" walls, (2B) between the studs

  1. Sheltering in Place | Y-12 National Security Complex

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

    everyone inside (including pets). Close all doors and windows. Turn off and close all ventilation systems, including: Air conditioning Attic & exhaust fans Furnaces Fireplace...

  2. Microsoft Word - HERS Round-Table February 2016.docx

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

    ... to air flow Ducts in the attic are an obstacle in Texas and southwest (costperception - sealing) 3 Rating Modeling does not give sufficient credit for moving ducts to ...

  3. DOE ZERH Case Study: Mutual Housing California, Mutual Housing...

    Office of Scientific and Technical Information (OSTI)

    uninsulated salb on grade foundation; vented attic with R-44 blown fiberglass; air to water heat pumps. PNNL USDOE Office of Energy Efficiency and Renewable Energy (EERE),...

  4. TITLE AUTHORS SUBJECT SUBJECT RELATED DESCRIPTION PUBLISHER AVAILABILI...

    Office of Scientific and Technical Information (OSTI)

    walls uninsulated salb on grade foundation vented attic with R blown fiberglass air to water heat pumps PNNL USDOE Office of Energy Efficiency and Renewable Energy EERE Building...

  5. Puget Sound Energy - Residential Energy Efficiency Rebate Programs...

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

    System: 250 Clothes Washers: 50 Refrigerator: 50 Freezers: 25 Refrigerator Recycling: 25 CFLs: Up to 4 LED Bulbs: 8 LED Fixtures: 15 FloorAtticWall Insulation: 50%...

  6. Energy Upgrade California in Los Angeles County - The Flex Path...

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

    Bundle of Measures) * Air sealing * Attic insulation * HVAC duct sealing * Insulate water heater pipes * Thermostatic shower valve * Low-flow shower head * Combustion ...

  7. TVA Partner Utilities - eScore Program | Department of Energy

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

    Program Info Sector Name Utility Website http:energyright.comresidentialescore.html State Alabama Program Type Rebate Program Rebate Amount Attic Insulation - 250Home (One...

  8. TVA Partner Utilities - eScore Program | Department of Energy

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

    Program Info Sector Name Utility Website http:energyright.comresidentialescore.html State Mississippi Program Type Rebate Program Rebate Amount Attic Insulation - 250...

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

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

    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. ...

  10. Building America Top Innovations 2013 Profile … Buried and Encapsulated Ducts

    Energy Savers [EERE]

    This Building America-developed technique allows ducts installed in a vented attic to match the performance of ducts in conditioned space. For years builders have designed their homes with the HVAC ducts in the attic. There is plenty of space up there to run the ducts, and if the air handler is located in the attic as well, it is not taking up valuable square footage inside the home. The only problem is vented attics can be very hot in the summer and very cold in the winter. Estimated thermal

  11. 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

  12. 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.

  13. Roof aperture system for selective collection and control of solar energy for building heating, cooling and daylighting

    DOE Patents [OSTI]

    Sanders, William J.; Snyder, Marvin K.; Harter, James W.

    1983-01-01

    The amount of building heating, cooling and daylighting is controlled by at least one pair of solar energy passing panels, with each panel of the pair of panels being exposed to a separate direction of sun incidence. A shutter-shade combination is associated with each pair of panels and the shutter is connected to the shade so that rectilinear movement of the shutter causes pivotal movement of the shade.

  14. Roof aperture system for selective collection and control of solar energy for building heating, cooling and daylighting

    SciTech Connect (OSTI)

    Sanders, W.J.; Harter, J.W.; Snyder, M.K.

    1983-12-06

    The amount of building heating, cooling and daylighting is controlled by at least one pair of solar energy passing panels, with each panel of the pair of panels being exposed to a separate direction of sun incidence. A shutter-shade combination is associated with each pair of panels and the shutter is connected to the shade so that rectilinear movement of the shutter causes pivotal movement of the shade.

  15. Tax Credits, Rebates & Savings | Department of Energy

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

    sealing, Building Insulation, Windows, Siding, Roofs, Agricultural Equipment, Other EE, Wind (Small), Hydroelectric (Small), Reflective Roofs, LED Lighting, Commercial...

  16. Tax Credits, Rebates & Savings | Department of Energy

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

    Insulation, Windows, Siding, Roofs, Agricultural Equipment, Other EE, Wind (Small), Hydroelectric (Small), Reflective Roofs, LED Lighting, Commercial Refrigeration Equipment...

  17. Tips: Insulation | Department of Energy

    Energy Savers [EERE]

    Energy-Efficient Roofs Tips: Energy-Efficient Roofs Tips: Energy-Efficient Roofs If you've ever stood on a roof on a hot summer day, you know how hot it can get. The heat from your roof makes your air conditioner work even harder to keep your home cool. Cool Roofs If you are building a new home, decide during planning whether you want a cool roof, and if you want to convert an existing roof, you can: Retrofit the roof with specialized heat-reflective material. Re-cover the roof with a new

  18. Energy Division annual progress report for period ending September 30, 1992

    SciTech Connect (OSTI)

    Counce, D.M.; Wolff, P.P.

    1993-04-01

    Energy Division`s mission is to provide innovative solutions to energy and related Issues of national and global importance through interdisciplinary research and development. Its goals and accomplishments are described in this annual progress report for FY 1992. Energy Division`s total expenditures in FY 1992 were $42.8 million. The work is supported by the US Department of Energy, the US Department of Defense, many other federal agencies, and some private organizations. Disciplines of the 116.5 technical staff members include engineering, social sciences, physical and life sciences, and mathematics and statistics. The division`s programmatic activities cover three main areas: (1) analysis and assessment, (2) energy conservation technologies, and (3) military transportation systems. Analysis and assessment activities involve energy and resource analysis, preparation of environmental assessments and impact statements, research on waste management, technology transfer, analysis of energy and environmental needs in developing countries, and civilian transportation analysis. Energy conservation technologies focus on electric power systems, building envelopes (walls, foundations, roofs, attics, and materials), and methods to improve energy efficiency in existing buildings. Military transportation systems conduct research for sponsors within the US military to improve the efficiency of military deployment, scheduling, and transportation coordination. Much of Energy Division`s research is valuable to other organizations as well as to sponsors. This information is disseminated by the staff`s involvement in professional and trade organizations and workshops; joint research with universities and private-sector firms; collaboration with state and local governments; presentation of work at conferences; and publication of research results in journals, reports, and conference proceedings.

  19. Energy Division annual progress report for period ending September 30, 1993

    SciTech Connect (OSTI)

    Wolff, P.P.

    1994-07-01

    One of 17 research divisions at Oak Ridge National Laboratory, Energy Division`s mission is to provide innovative solutions to energy and related issues of national and global importance through interdisciplinary research and development. Its goals and accomplishments are described in this annual progress report for FY1993. Energy Division is committed to (1) understanding the mechanisms by which societies make choices in energy use; (2) improving society`s understanding of the environmental, social, and economic implications of technological change; (3) developing and transferring energy-efficient technologies; (4) improving transportation policy and planning; (5) enhancing basic knowledge in the social sciences as related to energy and associated issues. Energy Division`s expenditures in FY1993 totaled $42 million. The work was supported by the US DOE, DOD, many other federal agencies, and some private organizations. Disciplines of the 126.5 technical staff members include engineering, social sciences, physical and life sciences, and computer sciences and data systems. The division`s programmatic activities cover three main areas: (1) analysis and assessment, (2) energy use and delivery technologies, and (3) transportation systems. Analysis and assessment activities involve energy and resource analysis, preparation of environmental assessments and impact statements, research on emergency preparedness, transportation analysis, and analysis of energy and environmental needs in developing countries. Energy use and delivery technologies focus on electric power systems, building equipment, building envelopes (walls, foundations, roofs, attics, and materials), and methods to improve energy efficiency in existing buildings. Transportation systems research is conducted both to improve the quality of civilian transportation and for sponsors within the US military to improve the efficiency of deployment, scheduling, and transportation coordination.

  20. Analysis in Support of the Radiant Barrier Fact Sheet 2010 Update

    SciTech Connect (OSTI)

    Stovall, Therese K; Shrestha, Som S; Arimilli, Rao V; Yarbrough, David W; Pearson, Thomas

    2010-01-01

    Quantifying the benefits of radiant barriers is complex because the benefits depend upon the climate, attic geometry, duct arrangements, and other building parameters. Homeowners, however, require simplified guidance regarding building envelope options, even those options that seem to have no simple answers. An extensive parametric evaluation of radiant barrier installation alternatives was made using a newly expanded and benchmarked version of an attic simulation program. To complement this anal- ysis, a detailed numerical analysis of radiation heat transfer within the attic and within the small space bounded by the rafters and the sheathing was completed. The results provide guidance for homeowners and builders.

  1. Modeling the Regeneration Chemistry of Lean NOx Traps | Department of

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

    of Energy graphic depicts all the modes of heat transfer that AtticSim evaluates. This graphic depicts all the modes of heat transfer that AtticSim evaluates. Lead Performer: Oak Ridge National Laboratory - Oak Ridge, TN Partners: Fraunhofer USA - Boston, MA DOE Funding: $220,000 Project Term: 10/1/2013 - 9/30/2014 Project Objective The ultimate goal is to provide the DOE with a validated and benchmarked duct model the Fraunhofer attic model that accounts for radiation and convection heat

  2. Looking Glass RSL-Andrews

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

    Department of Energy Look Up to See Your Bills Go Down: Making Your Attic More Efficient Look Up to See Your Bills Go Down: Making Your Attic More Efficient July 18, 2011 - 5:29pm Addthis Allison Casey Senior Communicator, NREL This year at my house, we have been on a quest to make our attic more energy efficient. I think we realized just how much this unseen area contributes to our overall comfort -not to mention what we pay to heat and cool the house. The first thing we did was install

  3. Resolution of Surveillance Report No. PAD-BDW-95-004 for suspect bolts installed in the 105 KW roof addition structure

    SciTech Connect (OSTI)

    Frier, W.A.

    1995-04-14

    A DOE RL surveillance determined that a test report (WHC-SD-NR-TRP-020) was less than adequate. As a result, WHC removed nine of the previous in-situ tested A325 suspect bolts and contracted with Koon-Hall Testing Corporation to perform hardness and tensile testing and chemical composition analysis of the removed bolts. WHC also contracted with ADVENT Engineering, Inc., to perform an evaluation of the Koon-Hall test results and to respond to the concerns identified in the DOE RL surveillance. The Koon-Hall Laboratory test results and the assessments strongly support the conclusion that the suspect bolts are indeed the equivalent of A325 high-strength, Type-1 bolts and have been properly heat-treated.

  4. Green version of the EERE PowerPoint template, for use with PowerPoint...

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

    of FORTIFIED Programs June 5, 2014 Going Green and Building Strong: Building a FORTIFIED ... FORTIFIED Roof Roof Deck Attachment New Roofs: 8d ring shank nails at 6-in on center ...

  5. DOE Zero Energy Ready Home Case Study, KB Home, San Marcos, CA...

    Energy Savers [EERE]

    ... The roof deck was covered with a liner and flashing then topped with special "smog-eating" concrete roof tiles that help offset the air pollution from cars and trucks. Each roof ...

  6. Text-Alternative Version of Building America Webinar: High-Performance...

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

    ... This world-class research program partners with industry to bring ... The best solution is locating the mechanical system inside an under vented attic. The air change, believe it or ...

  7. Going Deeper in the Heart of Texas Helps Retired Officers Save...

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

    The ARC, a nonprofit community for retired military officers and their spouses, was looking to upgrade the attic insulation in 189 single-family cottages built between 1987 and ...

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

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

    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. ...

  9. DOE Zero Energy Ready Home Case Study: Preferred Builders, Old...

    Energy Savers [EERE]

    with PV. This 2,700-square-foot custom home has advanced framed walls with R-24 blown cellulose plus R-7.5 EPS rigid foam, membrane-coated OSB, a closed-cell spray foamed attic,...

  10. DOE Tour of Zero: The MassDevelopment Production House by Transformati...

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

    at the eaves and valleys. The vented attic is insulated with 18 inches of blown cellulose on the ceiling deck. 3 of 7 This certified DOE Zero Energy Ready Home is one of...

  11. 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 ...

  12. Investigating Solutions to Wind Washing Issues in Two-Story Florida Homes, Phase 2

    SciTech Connect (OSTI)

    Withers, C.; Kono, J.

    2015-04-01

    This report provides results from a second-phase research study of a phenomenon generally referred to as wind washing. Wind washing is the movement of unconditioned air around or through building thermal barriers in such a way as to diminish or nullify the intended thermal performance. In some cases, thermal and air barriers are installed very poorly or not at all, and air can readily move from unconditioned attic spaces into quasi-conditioned interstitial spaces. This study focused on the impact of poorly sealed and insulated floor cavities adjacent to attic spaces in Florida homes. In these cases, unconditioned attic air can be transferred into floor cavities through pathways driven by natural factors such as wind, or by thermal differences between the floor cavity and the attic. Air can also be driven into a floor cavity through mechanical forces imposed by return duct leakage in the floor cavity.

  13. Evaporative Coolers | Department of Energy

    Office of Environmental Management (EM)

    windows in unoccupied areas. Where open windows create a security issue, install up-ducts in the ceiling. Up-ducts open to exhaust warm air into the attic as cooler air comes...

  14. Building America Top Innovations 2013 Profile Buried and Encapsulated Ducts

    SciTech Connect (OSTI)

    2013-09-01

    In this innovation profile, CARB research shows HVAC ducts that are encapsulated in closed-cell spray foam and buried in blown insulation in a vented attic meet the code requirements for ducts in conditioned space.

  15. DOE Challenge Home Case Study, Palo Duro Homes, Inc., Albuquerque...

    Energy Savers [EERE]

    ... and cooling is provided with a heat pump that has exceptionally high performance ... * HVAC: 21 SEER, 10 HSPF air source heat pump with ECM fan * Ducts: in sealed attic; R-6 ...

  16. DOE Zero Energy Ready Home Case Study 2013: Palo Duro Homes,...

    Energy Savers [EERE]

    ... and cooling is provided with a heat pump that has exceptionally high performance ... * HVAC: 21 SEER, 10 HSPF air source heat pump with ECM fan * Ducts: in sealed attic; R-6 ...

  17. DOE Zero Energy Ready Home Case Study 2013: Manatee County Habitat...

    Energy Savers [EERE]

    ... ducted, Manatee chose to install the heat pump in the insulated attic with supply ducts to the bedrooms and living areas. DOE ZERO ENERGY READY HOME Manatee County Habitat for ...

  18. DOE Zero Energy Ready Home Case Study: Addison Homes, Cobbler...

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

    inch rigid foam, a sealed conditioned crawl space insulated on inside with 2 inches poly iso, a vented attic with R-38 blown fiberglass, a central heat pump with fresh air intake. ...

  19. 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 ...

  20. DOE Tour of Zero: The Hale Plan by New Town Builders | Department...

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

    over the outer walls for full-depth attic insulation. 8 of 8 High-efficiency advanced framing techniques reduce the lumber use while providing more room for insulation. This...

  1. DOE Zero Energy Ready Home Case Study: StreetScape Development...

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

    with R-20 of open-cell spray foam, R-49 open-cell spray-foam sealed attic, an HRV, and a tankless water heater for hydro coil furnace with high-velocity, small-diameter ducts. ...

  2. Lakeland Electric- Residential Conservation Rebate Program

    Broader source: Energy.gov [DOE]

    Lakeland Electric offers a conservation program for residential customers to save energy in homes. Rebates are available for Heat Pumps, HVAC tune-ups, attic insulation upgrades, and Energy Star...

  3. DOE Zero Energy Ready Home Case Study: Weiss Building & Development...

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

    has advanced framed walls with R-23 dense-packed fiberglass plus R-13 rigid polyiso, a sealed attic with open-cell spray foam, a pier foundation, and 95% efficient gas furnace. ...

  4. 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.

  5. DOE Zero Energy Ready Home Case Study: Preferred Builders, Old...

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

    custom home has advanced framed walls with R-24 blown cellulose plus R-7.5 EPS rigid foam, membrane-coated OSB, a closed-cell spray foamed attic, R-13 closed-cell ...

  6. 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

  7. Southern Power District- Residential Energy Efficiency Rebate Programs

    Broader source: Energy.gov [DOE]

    Southern Power District (SPD) offers rebates for the purchase and installation of efficient air source heat pumps, water heaters, attic insulation, LED lighting, and HVAC tune-ups. All equipment...

  8. Tips: Insulation | Department of Energy

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

    They are available in widths suited to standard spacing of wall studs and attic or floor joists: 2 inch x 4 inch walls can hold R-13 or R-15 batts; 2 inch x 6 inch walls can use ...

  9. 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..

  10. Weatherization Assistance for the Hottest Days | Department of...

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

    We also pull in the evening and morning cool air with fans, and keep the thermostat set ... like improving insulation or installing attic fans, so I focus on the smaller things. ...

  11. DOE Zero Energy Ready Home: Near Zero Maine Home II, Vassalboro...

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

    R-70 cellulose in the attic, extensive air sealing, a mini-split heat pump, an heat recovery ventilator, solar water heating, LED lighting, 3.9 kWh PV, and triple-pane windows. ...

  12. DOE Zero Energy Ready Home Case Study: Weiss Building & Development...

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

    attic with R-100 blown fiberglass, plus R-40 rigid EPS under the slab, triple-pane windows, two ductless mini-split heat pumps, and redundant air sealing and flashing details. ...

  13. U.S. Threatened by Leaky Ducks! | Department of Energy

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

    air conditioner, or heat pump, to the rooms to supply the warm and chilled air, can leak the conditioned air into the attic or crawlspace. You'll have to make up for that lost...

  14. Tax Credits, Rebates & Savings | Department of Energy

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

    Doors, Siding, Roofs, Comprehensive MeasuresWhole Building, Other EE, Reflective Roofs OTEC- Residential Energy Efficiency Rebate Program Oregon Trail Electric Cooperative (OTEC)...

  15. Tax Credits, Rebates & Savings | Department of Energy

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

    Insulation, Windows, Roofs, Other EE, Reflective Roofs, Pool Pumps, LED Lighting OTEC- Residential Energy Efficiency Rebate Program Oregon Trail Electric Cooperative (OTEC)...

  16. Tax Credits, Rebates & Savings | Department of Energy

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

    Air sealing, Building Insulation, Windows, Doors, Roofs, Other EE, Reflective Roofs OTEC- Residential Energy Efficiency Rebate Program Oregon Trail Electric Cooperative (OTEC)...

  17. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Other EE, Reflective Roofs OTEC- Residential Energy Efficiency Rebate Program Oregon Trail Electric Cooperative (OTEC)...

  18. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Other EE, Reflective Roofs State Building Energy Standards In May 2013 the Sustainable Coonstruction Advisory Committee...

  19. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Motors, Other EE, Fuel Cells using Renewable Fuels, Reflective Roofs, Pool Pumps, LED Lighting Mountain...

  20. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Motors, Other EE, Fuel Cells using Renewable Fuels, Reflective Roofs, Pool Pumps, LED Lighting PNM-...

  1. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Motors, Other EE, Fuel Cells using Renewable Fuels, Reflective Roofs, Pool Pumps, LED Lighting Delmarva...

  2. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Motors, Other EE, Fuel Cells using Renewable Fuels, Reflective Roofs, Pool Pumps, LED Lighting Consumers...

  3. Tax Credits, Rebates & Savings | Department of Energy

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

    Water Heaters, Heat Pumps, Air conditioners, DuctAir sealing, Building Insulation, Windows, Roofs, Other EE, Reflective Roofs Small Business Energy Loan Program The maximum...

  4. Tax Credits, Rebates & Savings | Department of Energy

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

    Furnaces (11) Apply Furnaces filter Roofs (11) Apply Roofs filter Windows (11) Apply Windows filter Air conditioners (10) Apply Air conditioners filter Caulking...

  5. Tax Credits, Rebates & Savings | Department of Energy

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

    Insulation filter Heat Pumps (10) Apply Heat Pumps filter Roofs (10) Apply Roofs filter Windows (10) Apply Windows filter Air conditioners (9) Apply Air conditioners filter Duct...

  6. Tax Credits, Rebates & Savings | Department of Energy

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

    Thermostats, CaulkingWeather-stripping, DuctAir sealing, Building Insulation, Windows, Doors, Siding, Roofs, Reflective Roofs, LED Lighting TVA- Solar Solutions...

  7. Tax Credits, Rebates & Savings | Department of Energy

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

    Mgmt. SystemsBuilding Controls, Windows, Roofs, Other EE, Reflective Roofs, LED Lighting Home Performance with ENERGY STAR Eligibility Eligibility: Residential Savings Category:...

  8. Tax Credits, Rebates & Savings | Department of Energy

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

    Roofs, Other EE, Wind (Small), Geothermal Direct-Use, Reflective Roofs City of Detroit- SmartBuildings Detroit Green Fund Loan The Economic Development Corporation (EDC) of...

  9. Tax Credits, Rebates & Savings | Department of Energy

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

    Controls, Roofs, Motors, Motor VFDs, CustomOthers pending approval, Other EE, Food Service Equipment, Reflective Roofs, LED Lighting Pay for Performance Program...

  10. Tax Credits, Rebates & Savings | Department of Energy

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

    Building Insulation, Windows, Roofs, Motors, Other EE, Fuel Cells using Renewable Fuels, Reflective Roofs, Pool Pumps, LED Lighting Renewable Energy and Energy Efficiency...

  11. Tax Credits, Rebates & Savings | Department of Energy

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

    Windows, Roofs, Motors, Motor VFDs, Other EE, Food Service Equipment, Reflective Roofs, LED Lighting, Tankless Water Heater, Commercial Refrigeration Equipment Energy Management...

  12. Tax Credits, Rebates & Savings | Department of Energy

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

    Air sealing, Building Insulation, Windows, Doors, Roofs, Other EE, Reflective Roofs Emerald PUD- Residential Energy Efficiency Rebate Program Emerald People's Utility District...

  13. Tax Credits, Rebates & Savings | Department of Energy

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

    Mgmt. SystemsBuilding Controls, Windows, Roofs, Other EE, Reflective Roofs, LED Lighting Local Option- Clean Energy Development Boards PACE Overview Eligibility: Commercial,...

  14. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Motors, Other EE, Fuel Cells using Renewable Fuels, Reflective Roofs, Pool Pumps, LED Lighting Cedar Falls...

  15. Tax Credits, Rebates & Savings | Department of Energy

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

    Category: Lighting, Heat Pumps, Air conditioners, Roofs, Other EE, Reflective Roofs EmPOWER Maryland Clean Energy Communities Grant Program NOTE: The program deadline to apply...

  16. Tax Credits, Rebates & Savings | Department of Energy

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

    sealing, Building Insulation, Windows, Doors, Siding, Roofs, Comprehensive MeasuresWhole Building, Other EE, Reflective Roofs Business Energy Conservation Loan Program The Vermont...

  17. Tax Credits, Rebates & Savings | Department of Energy

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

    Windows, Doors, Roofs, Other EE, Reflective Roofs Energy Conservation for Ohioans (ECO-Link) Program Qualifying Technology A wide range of energy-efficiency upgrades and...

  18. Tax Credits, Rebates & Savings | Department of Energy

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

    Windows, Roofs, Other EE, Wind (Small), Geothermal Direct-Use, Reflective Roofs City of Plano- Smart Energy Loan Program Eligible properties must be owner-occupied...

  19. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Doors, Roofs, Other EE, Reflective Roofs City of Plano- Smart Energy Loan Program Eligible properties must be owner-occupied...

  20. PowerPoint Presentation

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

    to site * Blends aesthetics of surrounding buildings * Colonial style with craftsman touch * 2 stories * Gable roof * Shed roof porch * Community * Density: 3,456 sq mi * MFI: ...

  1. Tax Credits, Rebates & Savings | Department of Energy

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

    Roofs, Comprehensive MeasuresWhole Building, Other EE, Reflective Roofs NorthWestern Energy (Electric)- Commercial Energy Efficiency Rebate Program The E+ Commercial Lighting...

  2. Tax Credits, Rebates & Savings | Department of Energy

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

    Building Insulation, Windows, Doors, Roofs, Other EE, Reflective Roofs Local Option- Property Assessed Clean Energy Property-Assessed Clean Energy (PACE) financing effectively...

  3. Tax Credits, Rebates & Savings | Department of Energy

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

    Building Insulation, Windows, Doors, Siding, Roofs, Reflective Roofs, LED Lighting Lean and Green Michigan PACE Interested property owners should start by performing an energy...

  4. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Other EE, Reflective Roofs Rocky Mountain Power- wattsmart Business Program Rocky Mountain Power provides incentives...

  5. Tax Credits, Rebates & Savings | Department of Energy

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

    Insulation, Windows, Roofs, Other EE, Reflective Roofs, Pool Pumps, LED Lighting Rocky Mountain Power- wattsmart Residential Efficiency Program Rocky Mountain Power provides...

  6. Microsoft PowerPoint - LID Presentation_Biohabitats NSI [Compatibility...

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

    Rooftops Take a Roof to Stream Design Approach Take a Roof to Stream Design Approach Rainwater harvesting R i t i t ti Rainwater interception Landscape buffers Rooftop...

  7. Tax Credits, Rebates & Savings | Department of Energy

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

    Roofs, Comprehensive MeasuresWhole Building, Other EE, Reflective Roofs Sulphur Springs Valley EC- Residential Energy Efficiency Loan Program Sulphur Springs Valley Electric...

  8. infrastructure

    National Nuclear Security Administration (NNSA)

    insulated roofs and more energy efficient HVAC systems. The cool roof has high solar reflectance, so it emits absorbed solar radiation back into the atmosphere, which...

  9. nnss

    National Nuclear Security Administration (NNSA)

    insulated roofs and more energy efficient HVAC systems. The cool roof has high solar reflectance, so it emits absorbed solar radiation back into the atmosphere, which...

  10. construction

    National Nuclear Security Administration (NNSA)

    insulated roofs and more energy efficient HVAC systems. The cool roof has high solar reflectance, so it emits absorbed solar radiation back into the atmosphere, which...

  11. nevada national security site

    National Nuclear Security Administration (NNSA)

    insulated roofs and more energy efficient HVAC systems. The cool roof has high solar reflectance, so it emits absorbed solar radiation back into the atmosphere, which...

  12. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Doors, Roofs, Other EE, Reflective Roofs Eau Claire Energy Cooperative- Non-Residential Energy Efficiency Rebate Programs Eau Claire...

  13. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Motors, Motor VFDs, Other EE, Food Service Equipment, Reflective Roofs, LED Lighting, Tankless Water Heater, Commercial...

  14. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Motors, Other EE, Fuel Cells using Renewable Fuels, Reflective Roofs, Pool Pumps, LED Lighting Renewable...

  15. Tax Credits, Rebates & Savings | Department of Energy

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

    Siding, Roofs, Comprehensive MeasuresWhole Building, Other EE, Reflective Roofs Orlando Utilities Commission- Residential Energy Efficiency Rebate Program Orlando Utilities...

  16. Dachland GmbH | Open Energy Information

    Open Energy Info (EERE)

    Product: Roofing contractor which specialises in installing single ply, green and photovoltaic roofing systems. Coordinates: 50.000605, 8.2723 Show Map Loading map......

  17. Tax Credits, Rebates & Savings | Department of Energy

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

    Roofs, Other EE, Reflective Roofs, Pool Pumps SMUD- Residential Energy Efficiency Rebate Program Sacramento Municipal Utility District (SMUD) offers incentives for its...

  18. SMUD - Residential Energy Efficiency Rebate Program | Department...

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

    Insulation Windows Roofs Other EE Reflective Roofs Pool Pumps LED Lighting Maximum Rebate Contact SMUD for individual program or equipment maximum amounts Program Info...

  19. Tax Credits, Rebates & Savings | Department of Energy

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

    Building Insulation, Windows, Doors, Siding, Roofs, Reflective Roofs, LED Lighting Lean and Green Michigan PACE Interested property owners should start by performing an...

  20. DOE Challenge Home, Washington Program Requirements

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

    ... documentation of maximum allowable dead load and live load ratings of the roof, ... documentation of maximum allowable dead load and live load ratings of the roof, ...

  1. Tax Credits, Rebates & Savings | Department of Energy

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

    Insulation, Windows, Doors, Roofs, Other EE, Reflective Roofs City of Chicago- Small Business Improvement Fund SomerCor 504 Inc. administers the Small Business Improvement Fund...

  2. Tax Credits, Rebates & Savings | Department of Energy

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

    Building Insulation, Windows, Roofs, Other EE, Reflective Roofs Austin Energy- Free Home Energy Improvements Program Note: potential participants could be placed on a wait list...

  3. Tax Credits, Rebates & Savings | Department of Energy

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

    Air sealing, Building Insulation, Windows, Doors, Roofs, Other EE, Reflective Roofs Blue Ridge Mountain Electric Membership Corporation- Energy Efficiency Rebate Program Blue...

  4. Company Name Company Name Address Place Zip Sector Product Website

    Open Energy Info (EERE)

    CREATIVE ELECTRO POWER CREATIVE ELECTRO POWER kazipara mirpur Dhaka Solar IPS CONTROLLER Solar panel http www smmbd com Southern CA Area Caprock Roofing Caprock Roofing Lewisville...

  5. Johns Manville | Open Energy Information

    Open Energy Info (EERE)

    Denver, Colorado Zip: 80217-5108 Sector: Solar Product: Colorado-based maker of insulation, mechanical insulation, commercial roofing, and roof insulation. The company has a...

  6. Tax Credits, Rebates & Savings | Department of Energy

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

    Building Insulation, Windows, Roofs, Other EE, Reflective Roofs, Pool Pumps, LED Lighting CPS Energy (Electric)- Residential Energy Efficiency Rebate Program CPS Energy offers a...

  7. Tax Credits, Rebates & Savings | Department of Energy

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

    Doors, Siding, Roofs, Comprehensive MeasuresWhole Building, Other EE, Reflective Roofs Industrial and Agricultural Production Efficiency Program Energy Trust of Oregon offers...

  8. Section 42: Monitoring

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

    of the surrounding roof, walls, and floor of the waste disposal room; 3. Initiation or displacement of major brittle deformation features in the roof or surrounding rock; 4....

  9. Tax Credits, Rebates & Savings | Department of Energy

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

    Siding, Roofs, Comprehensive MeasuresWhole Building, Insulation, Reflective Roofs Gulf Power- Residential Energy Efficiency EarthCents Program Gulf Power, owned by Southern...

  10. Tax Credits, Rebates & Savings | Department of Energy

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

    Controls, Windows, Roofs, Reflective Roofs, LED Lighting Energy Conservation for Ohioans (ECO-Link) Program Qualifying Technology A wide range of energy-efficiency upgrades and...

  11. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Motors, Other EE, Fuel Cells using Renewable Fuels, Reflective Roofs, Pool Pumps, LED Lighting Idaho Falls...

  12. Tax Credits, Rebates & Savings | Department of Energy

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

    DuctAir sealing, Building Insulation, Windows, Roofs, Other EE, Reflective Roofs El Paso Electric- SCORE Program for Counties, Municipalities, and Schools El Paso Electric...

  13. Tax Credits, Rebates & Savings | Department of Energy

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

    Roofs, Motors, Motor VFDs, CustomOthers pending approval, Other EE, Personal Computing Equipment, Reflective Roofs PSEG Long Island- Commercial Energy Efficiency Rebate...

  14. Tax Credits, Rebates & Savings | Department of Energy

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

    Roofs, Motors, Motor VFDs, CustomOthers pending approval, Other EE, Personal Computing Equipment, Reflective Roofs Anaheim Public Utilities- Green Building Rebate Program...

  15. Insulation Materials | Department of Energy

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

    Materials Insulation Materials Cellulose, a fiber insulation material with a high recycled content, is blown into a home attic. | Photo courtesy of Cellulose Insulation Manufacturers Association. Cellulose, a fiber insulation material with a high recycled content, is blown into a home attic. | Photo courtesy of Cellulose Insulation Manufacturers Association. Blown-in fiberglass insulation thoroughly fills the stud cavities in this home. | Photo courtesy of Bob Hendron, NREL. Blown-in fiberglass

  16. Geek-Up[3.4.2011]: 3,000+ MW and 2,500 Year-Old Greek Pottery | Department

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

    of Energy An Attic black-figured amphora, currently in the British Museum, of the type that will be studied at SLAC. | Photo by Marie-Lan Nguyen, Courtesy of SLAC National Accelerator Laboratory An Attic black-figured amphora, currently in the British Museum, of the type that will be studied at SLAC. | Photo by Marie-Lan Nguyen, Courtesy of SLAC National Accelerator Laboratory Elizabeth Meckes Elizabeth Meckes Director of User Experience & Digital Technologies, Office of Public Affairs

  17. Insurance Provider Contacts

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

    Materials Insulation Materials Cellulose, a fiber insulation material with a high recycled content, is blown into a home attic. | Photo courtesy of Cellulose Insulation Manufacturers Association. Cellulose, a fiber insulation material with a high recycled content, is blown into a home attic. | Photo courtesy of Cellulose Insulation Manufacturers Association. Blown-in fiberglass insulation thoroughly fills the stud cavities in this home. | Photo courtesy of Bob Hendron, NREL. Blown-in fiberglass

  18. Solar Decathlon Technology Spotlight: Structural Insulated Panels

    Broader source: Energy.gov [DOE]

    Structural insulated panels (SIPs) are prefabricated structural elements used to build walls, ceilings, floors, and roofs.

  19. Correspondence | Department of Energy

    Office of Environmental Management (EM)

    Design » Design for Efficiency » Cool Roofs Cool Roofs Learn how switching to a cool roof can save you money and benefit the environment. A cool roof is one that has been designed to reflect more sunlight and absorb less heat than a standard roof. Cool roofs can be made of a highly reflective type of paint, a sheet covering, or highly reflective tiles or shingles. Nearly any type of building can benefit from a cool roof, but consider the climate and other factors before deciding to install

  20. Cool and Quiet DCJ | GE Global Research

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

    Design » Design for Efficiency » Cool Roofs Cool Roofs Learn how switching to a cool roof can save you money and benefit the environment. A cool roof is one that has been designed to reflect more sunlight and absorb less heat than a standard roof. Cool roofs can be made of a highly reflective type of paint, a sheet covering, or highly reflective tiles or shingles. Nearly any type of building can benefit from a cool roof, but consider the climate and other factors before deciding to install

  1. A Comparison of Simulation Capabilities for Ducts

    SciTech Connect (OSTI)

    Miller, William A.; Smith, Matt K.; Gu, Lixing; New, Joshua Ryan

    2014-11-01

    Typically, the cheapest way to install a central air conditioning system in residential buildings is to place the ductwork in the attic. Energy losses due to duct-attic interactions can be great, but current whole-house models are unable to capture the dynamic multi-mode physics of the interactions. The building industry is notoriously fragmented and unable to devote adequate research resources to solve this problem. Builders are going to continue to put ducts in the attic because floor space is too expensive to closet them within living space, and there are both construction and aesthetic issues with other approaches such as dropped ceilings. Thus, there is a substantial need to publicly document duct losses and the cost of energy used by ducts in attics so that practitioners, builders, homeowners and state and federal code officials can make informed decisions leading to changes in new construction and additional retrofit actions. Thus, the goal of this study is to conduct a comparison of AtticSim and EnergyPlus simulation algorithms to identify specific features for potential inclusion in EnergyPlus that would allow higher-fidelity modeling of HVAC operation and duct transport of conditioned air. It is anticipated that the resulting analysis from these simulation tools will inform energy decisions relating to the role of ducts in future building energy codes and standards.

  2. #AskEnergySaver: Insulation | Department of Energy

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

    Insulation #AskEnergySaver: Insulation February 21, 2014 - 5:20pm Addthis One of the most cost-effective ways to improve your home's comfort is to add insulation to your attic. <a href="/node/366805">Learn more about insulation</a>. | Photo courtesy of Dennis Schroeder, National Renewable Energy Lab. One of the most cost-effective ways to improve your home's comfort is to add insulation to your attic. Learn more about insulation. | Photo courtesy of Dennis Schroeder,

  3. Tips: Air Ducts | Department of Energy

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

    Tips: Air Ducts Tips: Air Ducts Air ducts: out of sight, out of mind. The unsealed ducts in your attic and crawlspaces lose air, and uninsulated ducts lose heat -- wasting energy and money. Air ducts: out of sight, out of mind. The unsealed ducts in your attic and crawlspaces lose air, and uninsulated ducts lose heat -- wasting energy and money. Your air ducts are one of the most important systems in your home, and if the ducts are poorly sealed or insulated they are likely contributing to

  4. Cooperative Education | Argonne National Laboratory

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

    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

  5. Presentation Title

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

    PV cells that are matched both in cost and service life to the roofing system. * Lower cost flexible roofing systems will use lower cost, shorter service life PV absorbers...

  6. OSTI, US Dept of Energy, Office of Scientific and Technical Informatio...

    Office of Scientific and Technical Information (OSTI)

    of Scientific and Technical Information (OSTI) building in Oak Ridge, Tennessee is now officially a Cool Roof, that is, it's energy efficient in ways that darker roofs are not. ...

  7. EECBG Success Story: Solar and Energy Efficiency Justice | Department...

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

    The roof of the justice center where a solar panel array will be installed to power a solar thermal water-heating system | Photo courtesy of Blount County, Tennessee. The roof of ...

  8. --No Title--

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

    work on the roof of a process building. This AHU will replace the function of the old Miller Picking AHU and will be located at a selected location on the roof. The ductwork for...

  9. DOE Zero Energy Ready Home: Durable Energy Builders, Houston, Texas

    Broader source: Energy.gov [DOE]

    This DOE Zero Energy Ready Home features super-insulated roof, 11,500 gallon rainwater cistern to supply most of the home’s drinking water, hurricane-proof roof, and triple-pane windows.

  10. DOE Tour of Zero: Port Hadlock by Clifton View Homes | Department...

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

    bills of 35. The solar panels are installed on the durable, fire-resistant standing seam steel roof. The roofing is installed on a structural insulated panel (SIP) thermal ...

  11. CX-010655: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Roof Repair on Crane Maintenance Area Roof CX(s) Applied: B1.3 Date: 06/20/2013 Location(s): South Carolina Offices(s): Savannah River Operations Office

  12. Indian Energy Blog Archive | Department of Energy

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

    up to 50% cheaper. March 22, 2010 Oklahoma Tribe to Install Solar Roof An Indian tribe in Anadarko, Oklahoma is installing solar panel roofs on two tribal government buildings...

  13. Building America Efficient Solutions for Existing Homes: Case...

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

    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 ...

  14. Project Profile: Development and Productization of High-Efficiency, Low-Cost Building-Integrated PV Shingles Using Monocrystalline Silicon Thin-Film Solar Cells

    Broader source: Energy.gov [DOE]

    The Solexel-OC team is developing a BIPV roofing shingle product that includes low-profile solar modules and a unique attachment system that will be fastened directly to the roof and incorporates...

  15. Duke Energy Florida- Commercial Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Progress Energy Florida offers an incentive to its business customers for replacing their old equipment with high-efficiency models. Rebates are available for cool and green roofs, roof insulation,...

  16. Tips for Renters and Property Owners | Department of Energy

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

    Follow Us followontwitter.png followonfacebook.png Energy 101 Screen shot of cool roofs video. Energy 101: Cool Roofs Home Design and Landscaping Blogs Tax Tips for Energy ...

  17. Results from the Plug-and-Play Workshop

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

    ... techniques could be a solution Structure * 5 kW system weigh 1200 pounds spread over the roof * Water penetration into the roof is a big concern when holes are drilled to install ...

  18. Principles of Heating and Cooling | Department of Energy

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

    is heat traveling through a solid material. On hot days, heat is conducted into your home through the roof, walls, and windows. Heat-reflecting roofs, insulation, and energy...

  19. Tax Credits, Rebates & Savings | Department of Energy

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

    Center Equipment, Reflective Roofs, LED Lighting, Commercial Refrigeration Equipment OTEC- Residential Energy Efficiency Rebate Program Oregon Trail Electric Cooperative (OTEC)...

  20. Tax Credits, Rebates & Savings | Department of Energy

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

    Controls, Reflective Roofs, LED Lighting, Commercial Refrigeration Equipment Energy Optimization (Electric)- Commercial Efficiency Program Energy Optimization Eligibility:...

  1. Text-Alternative Version of Building America Webinar: High-Performance

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

    Enclosure Strategies, Part 1: Unvented Roof Systems and Innovative Advanced Framing Strategies | Department of Energy High-Performance Enclosure Strategies, Part 1: Unvented Roof Systems and Innovative Advanced Framing Strategies Text-Alternative Version of Building America Webinar: High-Performance Enclosure Strategies, Part 1: Unvented Roof Systems and Innovative Advanced Framing Strategies High-Performance Enclosure Strategies, Part 1: Unvented Roof Systems and Innovative Advanced

  2. Tax Credits, Rebates & Savings | Department of Energy

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

    Controls, Reflective Roofs, LED Lighting, Commercial Refrigeration Equipment Santee Cooper- Commercial Energy Efficiency Rebate Program Santee Cooper provides rebates to...

  3. Tax Credits, Rebates & Savings | Department of Energy

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

    (Small), Reflective Roofs, LED Lighting, Commercial Refrigeration Equipment Santee Cooper- Commercial Energy Efficiency Rebate Program Santee Cooper provides rebates to...

  4. Tax Credits, Rebates & Savings | Department of Energy

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

    (Small), Reflective Roofs, LED Lighting, Commercial Refrigeration Equipment Baltimore Gas & Electric Company (Electric)- Commercial Energy Efficiency Program Baltimore...

  5. Tax Credits, Rebates & Savings | Department of Energy

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

    Building Insulation, Windows, Roofs, Other EE, Wind (Small), Geothermal Direct-Use Energy Optimization (Electric)- Commercial Efficiency Program Energy Optimization...

  6. Inside the White House: Solar Panels

    Broader source: Energy.gov [DOE]

    Go inside the White House and learn about the installation of solar panels on the roof of the residence.

  7. Building America Technology Solutions Case Study: Field Testing an Unvented

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

    Roof with Asphalt Shingles in a Cold Climate | Department of Energy Testing an Unvented Roof with Asphalt Shingles in a Cold Climate Building America Technology Solutions Case Study: Field Testing an Unvented Roof with Asphalt Shingles in a Cold Climate In this project, Building America team Building Science Corporation devised an experiment to build and instrument unvented test roofs using air-permeable insulation (dense-pack cellulose and fiberglass) in a cold climate (Chicago, Illinois

  8. Building America Technology Solutions for New and Existing Homes Case

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

    Study: Field Testing an Unvented Roof with Fibrous Insulation and Tiles | Department of Energy Homes Case Study: Field Testing an Unvented Roof with Fibrous Insulation and Tiles Building America Technology Solutions for New and Existing Homes Case Study: Field Testing an Unvented Roof with Fibrous Insulation and Tiles This case study by the U.S. Department of Energy's Building America research team Building Science Corporation is a test implementation of an unvented tile roof assembly in a

  9. Building America Technology Solutions for New and Existing Homes:

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

    Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet) | Department of Energy Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet) Building America Technology Solutions for New and Existing Homes: Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet) This case study describes Building Science Corporation's research into spray polyurethane foams in residential roofs, performing hygrothermal

  10. Building America Webinar: High-Performance Enclosure Strategies, Part I:

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

    Unvented Roof Systems and Innovative Advanced Framing Strategies | Department of Energy High-Performance Enclosure Strategies, Part I: Unvented Roof Systems and Innovative Advanced Framing Strategies Building America Webinar: High-Performance Enclosure Strategies, Part I: Unvented Roof Systems and Innovative Advanced Framing Strategies This webinar, held on February 12, 2015, focused on methods to design and build roof and wall systems for high performance homes that optimize energy and

  11. Tax Credits, Rebates & Savings | Department of Energy

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

    Other EE, Personal Computing Equipment, Reflective Roofs Anaheim Public Utilities- Green Building Rebate Program Anaheim Public Utilities (APU) offers commercial,...

  12. Tax Credits, Rebates & Savings | Department of Energy

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

    Equipment, Reflective Roofs, Commercial Refrigeration Equipment City of Scottsdale- Green Building Incentives Incentives include expedited plan review, green building...

  13. Tax Credits, Rebates & Savings | Department of Energy

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

    Equipment, Other Distributed Generation Technologies, Personal Computing Equipment, Data Center Equipment, Reflective Roofs, Commercial Refrigeration Equipment Mountain...

  14. Tax Credits, Rebates & Savings | Department of Energy

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

    Agricultural Equipment, Other EE, Wind (Small), Hydroelectric (Small), Reflective Roofs, LED Lighting, Commercial Refrigeration Equipment Interconnection Guidelines Process...

  15. Tax Credits, Rebates & Savings | Department of Energy

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

    Windows, Doors, Roofs, Comprehensive MeasuresWhole Building Midstate Electric Cooperative- Commercial and Industrial Energy Efficiency Rebate Program Midstate Electric...

  16. Method of and apparatus for supporting an overburden

    SciTech Connect (OSTI)

    Spies, K.

    1981-02-10

    A method and an arrangement are disclosed for supporting a roof of an underground excavation. A hollow prop casing of two or more telescopable sections is erected and telescoped apart until it bears on the floor and the roof. The sections are then biased against the floor and the roof and the prop casing is filled with a hardenable substance which upon hardening forms in the casing a solid column capable of supporting the roof.

  17. Tax Credits, Rebates & Savings | Department of Energy

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

    Building Insulation, Windows, Doors, Siding, Roofs Entergy Mississippi- Commercial Energy Efficiency Program Entergy Solutions for Business Program provides technical...

  18. Tax Credits, Rebates & Savings | Department of Energy

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

    Center Equipment, Reflective Roofs, LED Lighting, Commercial Refrigeration Equipment Emerald PUD- Commercial and Industrial Energy Efficiency Rebate Program Emerald People's...

  19. Tax Credits, Rebates & Savings | Department of Energy

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

    Reflective Roofs, LED Lighting, Commercial Refrigeration Equipment Ameren Illinois (Electric)- Custom, HVAC and Motor Business Efficiency Incentives Lighting Eligibility:...

  20. Tax Credits, Rebates & Savings | Department of Energy

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

    Nonprofit, Multifamily Residential Savings Category: Lighting, Lighting ControlsSensors, Heat Pumps, Roofs, Motors, Processing and Manufacturing Equipment, Agricultural...