National Library of Energy BETA

Sample records for water solar home

  1. Technology Solutions for New Homes Case Study: Indirect Solar Water Heating

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Systems in Single-Family Homes | Department of Energy Indirect Solar Water Heating Systems in Single-Family Homes Technology Solutions for New Homes Case Study: Indirect Solar Water Heating Systems in Single-Family Homes In 2011, Rural Development, Inc. (RDI) completed the construction of Wisdom Way Solar Village (WWSV), which is a development of 20 very efficient homes in Greenfield, Massachusetts. The homes feature R-40 walls, triple-pane windows, R-50 attic insulation, and airtight

  2. DOE Zero Energy Ready Home Solar Hot Water-Ready Checklist

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    drawing and riser diagram of solar hot water components. (RERHSWH Guide 3.6) Alternative: Provide home buyer with the following information: List of renewable-ready features ...

  3. DOE Zero Energy Ready Home Solar Hot Water-Ready Checklist |...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    checklist. PDF icon SHW-Ready Checklists.pdf More Documents & Publications Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE DOE Zero Energy Ready Home PV-Ready Checklist ...

  4. Efficient Solutions for Existing Homes Case Study: Solar Water...

    Energy Saver

    The developer installed SDHW to reduce fossil-fuel consumption, and CARB has been monitoring the system since its completion. Solar Water Heating in Multifamily Buildings (703.51 ...

  5. Efficient Solutions for Existing Homes Case Study: Solar Water Heating in

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Multifamily Buildings | Department of Energy Existing Homes Case Study: Solar Water Heating in Multifamily Buildings Efficient Solutions for Existing Homes Case Study: Solar Water Heating in Multifamily Buildings In spring 2014, Olive Street Development completed a major renovation project-converting an old school building in Greenfield, Massachusetts, into 12 high-performance apartments. The developer installed SDHW to reduce fossil-fuel consumption, and CARB has been monitoring the system

  6. Passive Solar Home Design | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Design for Efficiency » Passive Solar Home Design Passive Solar Home Design This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system (top of roof) supplies both domestic hot water and a secondary radiant floor heating system. | Photo courtesy of Jim Schmid Photography. This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system (top of roof) supplies both domestic hot water and a

  7. Technology Solutions for New Homes Case Study: Indirect Solar...

    Energy Saver

    Indirect Solar Water Heating Systems in Single-Family Homes Technology Solutions for New Homes Case Study: Indirect Solar Water Heating Systems in Single-Family Homes In 2011, ...

  8. Renewable Energy Ready Home Solar Photovoltaic Specifications...

    Energy Saver

    Renewable Energy Ready Home Solar Photovoltaic Specifications Renewable Energy Ready Home Solar Photovoltaic Specifications Solar Photovoltaic Specification, Checklist and Guide, ...

  9. Solar Home Energy | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Home Energy Jump to: navigation, search Name: Solar Home Energy Place: Bournemouth, United Kingdom Sector: Renewable Energy, Solar Product: Solar Home Energy is one of the...

  10. Cost, Design, and Performance of Solar Hot Water in Cold-Climate Homes

    SciTech Connect

    2006-05-03

    This paper examines long-term performance of two solar hot water heating systems in the northern climate zone.

  11. Renewable Energy Ready Home Solar Photovoltaic Specifications | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Renewable Energy Ready Home Solar Photovoltaic Specifications Renewable Energy Ready Home Solar Photovoltaic Specifications Solar Photovoltaic Specification, Checklist and Guide, from the U.S. Environmental Protection Agency. rerh_solar_electric_guide.pdf (1.04 MB) More Documents & Publications Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE DOE Zero Energy Ready Home PV-Ready Checklist DOE Zero Energy Ready Home Solar Hot Water-Ready Checklist

  12. CEC- New Solar Homes Partnership

    Energy.gov [DOE]

    Launched on January 2, 2007, the New Solar Homes Partnership (NSHP) is a 10-year, $400 million program to encourage solar in new homes by working with builders and developers to incorporate into ...

  13. Solar Energy Home | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Home Jump to: navigation, search Name: Solar Energy Home Address: 28 Church Road Place: London, United Kingdom Sector: Solar Product: Solar energy systems and equipment Phone...

  14. Solar, Wind, Hydropower: Home Renewable Energy Installations...

    Office of Environmental Management (EM)

    Solar, Wind, Hydropower: Home Renewable Energy Installations Solar, Wind, Hydropower: Home Renewable Energy Installations April 17, 2013 - 1:44pm Addthis This Lakewood, Colorado ...

  15. Solar Home in Boulder, Colorado

    Office of Energy Efficiency and Renewable Energy (EERE)

    This photograph features a 2.04-kilowatt grid-tied solar photovoltaic (PV) electric system on the Edwards home in Colorado that generates clean, carbon-free electricity. Generous utility and...

  16. Best Practices Solar Case Study: Pulte Homes - Civano, Tucson, Arizona

    SciTech Connect

    2007-06-01

    Building America factsheet on Pulte Homes, an energy-efficient home builder in hot dry climate using ducts in conditioned space, improved insulation, high-efficiency HVAC, and solar hot water.

  17. Your Solar Home

    Office of Energy Efficiency and Renewable Energy (EERE)

    Solar Schoolhouse Education supplement for the Sacramento Bee to introduce solar to elementary school children and introduce the design and AD contest for local students.

  18. City of Tucson- Solar Design Requirement for Homes

    Office of Energy Efficiency and Renewable Energy (EERE)

    To comply with this requirement, new homes must either have a complete solar water heating system installed or comply with one of two solar stub-out options. Option one requires the installation...

  19. DOE Zero Energy Ready Home Solar Hot Water-Ready Checklist

    Energy.gov [DOE]

    DOE Zero Energy Ready Home National Program encourages, but does not require, consideration of this checklist. 

  20. Planning a Home Solar Electric System | Department of Energy

    Office of Environmental Management (EM)

    Planning a Home Solar Electric System Planning a Home Solar Electric System Whether a home solar electric system will work for you depends on the available sun (resource),...

  1. Sandia Energy - Price Premiums for Solar Home Sales

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Price Premiums for Solar Home Sales Home Renewable Energy Energy Partnership News News & Events Photovoltaic Solar Systems Analysis Price Premiums for Solar Home Sales Previous...

  2. Solar Water Heaters | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Heat & Cool » Water Heating » Solar Water Heaters Solar Water Heaters Solar panels heat water that is delivered to a storage tank.| Photo courtesy of David Springer, National Renewable Energy Laboratory Solar panels heat water that is delivered to a storage tank.| Photo courtesy of David Springer, National Renewable Energy Laboratory Solar water heaters -- also called solar domestic hot water systems -- can be a cost-effective way to generate hot water for your home. They can be used in

  3. Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Water Heating SPECIFICATION, CHECKLIST AND GUIDE Renewable Energy Ready Home Table of Contents About the Renewable Energy Ready Home Specifications Assumptions of the RERH Solar Water Heating Specification ........................................................................... 1 Builder and Specification Limitations ............................................................................................................. 2 Renewable Energy Ready Home Solar Water Heating

  4. Solar Homes Sell for a Premium

    Energy.gov [DOE]

    Buying a solar energy system will likely increase your home’s value. A recent study found that solar panels are viewed as upgrades, just like a renovated kitchen or a finished basement, and home buyers across the country have been willing to pay a premium of about $15,000 for a home with an average-sized solar array. Additionally, there is evidence homes with solar panels sell faster than those without. In 2008, California homes with energy efficient features and PV were found to sell faster than homes that consume more energy. Keep in mind, these studies focused on homeowner-owned solar arrays.

  5. Building America Case Study: Indirect Solar Water Heating Systems...

    Energy Saver

    Indirect Solar Water Heating Systems in Single-Family Homes Greenfield, Massachusetts ... Building Component: Solar water heating Application: Single-family Years Tested: 2010-2013 ...

  6. Report on Solar Water Heating Quantitative Survey

    SciTech Connect

    Focus Marketing Services

    1999-05-06

    This report details the results of a quantitative research study undertaken to better understand the marketplace for solar water-heating systems from the perspective of home builders, architects, and home buyers.

  7. Combining Solar and Home Performance Services

    Office of Energy Efficiency and Renewable Energy (EERE)

    Better Buildings Residential Network Peer Exchange Call: Combining Solar and Home Performance Services, call slides and discussion summary, December 11, 2014.

  8. Passive Solar Home Design | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    well-designed passive solar home first reduces heating and cooling loads through energy-efficiency strategies and then meets those reduced loads in whole or part with solar energy. ...

  9. Installation on 2007 Solar Decathlon Home

    Energy.gov [DOE]

    This photograph features a 2007 Solar Decathlon competition home that includes residential photovoltaic (PV) modules from SunPower Corporation of San Jose, California, and a solar collector from ...

  10. Home Solar Installations: Things to Consider | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Home Solar Installations: Things to Consider Home Solar Installations: Things to Consider May 29, 2013 - 3:18pm Addthis Home solar systems can save you energy and money. | Photo ...

  11. Planning a Home Solar Electric System | Department of Energy

    Energy Saver

    Home Solar Electric System Planning a Home Solar Electric System Whether a home solar electric system will work for you depends on the available sun (resource), available space for ...

  12. Solar Energy Education. Home economics: student activities. Field...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Solar Energy Education. Home economics: student activities. Field test edition Citation Details In-Document Search Title: Solar Energy Education. Home economics: ...

  13. Solar Decathlon 2015: Nation's Leading Sustainable Home Design...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Solar Decathlon 2015: Nation's Leading Sustainable Home Design Competition on the Horizon Solar Decathlon 2015: Nation's Leading Sustainable Home Design Competition on the Horizon...

  14. Solar Homes in Watsonville, California

    Energy.gov [DOE]

    This photograph features a Clarum Homes Vista Montana development that consists of 177 single-family homes, 80 townhouses, and 132 apartments. Every home features a 1.2 to 2.4-kilowatt photovoltaic...

  15. Guide to Home Water Efficiency

    SciTech Connect

    2010-10-01

    A fact sheet from the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy: A water-efficient home helps you minimize your water use, harness water for reuse, conserve energy, and save money.

  16. Guide to Passive Solar Home Design

    SciTech Connect

    2010-10-01

    Passive solar design incorporates features in your home and its natural surroundings that harness the sun's low rays in winter and deflect the sun's high rays in the summer.

  17. Solar Decathlon 2015: Nation's Leading Sustainable Home Design...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Decathlon 2015: Nation's Leading Sustainable Home Design Competition on the Horizon Solar ... Richard King Richard King Director, Solar Decathlon KEY FACTS 2015 Solar Decathlon to kick ...

  18. Considering Solar For Your Home? One Milwaukee Homeowner Shares...

    Energy.gov [DOE] (indexed site)

    Milwaukee solar installers putting in a rooftop solar energy system on Dr. Paula Papanek's home. | Photo courtesy of Dr. Paula Papanek. Milwaukee solar installers putting in a ...

  19. Solar Home in Sacramento, California

    Office of Energy Efficiency and Renewable Energy (EERE)

    This photograph features houses in this Premier Homes development, near Sacramento, that has a 2.2-kilowatt building integrated photovoltaic (BIPV) system manufactured by GE Energy. The homes...

  20. Solar Homes Sell for a Premium | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Solar Homes Sell for a Premium Solar Homes Sell for a Premium Solar Homes Sell for a Premium Buying a solar energy system will likely increase your home's value. A recent study found that solar panels are viewed as upgrades, just like a renovated kitchen or a finished basement, and home buyers across the country have been willing to pay a premium of about $15,000 for a home with an average-sized solar array. Additionally, there is evidence homes with solar panels sell faster than those without.

  1. Home Solar Installations: Things to Consider | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Home Solar Installations: Things to Consider Home Solar Installations: Things to Consider May 29, 2013 - 3:18pm Addthis Home solar systems can save you energy and money. | Photo courtesy of Dennis Schroeder, NREL 22168. Home solar systems can save you energy and money. | Photo courtesy of Dennis Schroeder, NREL 22168. Erin Connealy Communications Specialist, Office of Energy Efficiency and Renewable Energy How can I participate? Read these considerations for installing a home solar electric

  2. The World's Largest Solar Project Finds a Home in California...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Solar Project Finds a Home in California The World's Largest Solar Project Finds a Home in ... That's the impact that the Blythe Solar Power Project is projected to have upon ...

  3. Solar Panel Design Ideas for Your Home | Department of Energy

    Office of Environmental Management (EM)

    Solar Panel Design Ideas for Your Home Solar Panel Design Ideas for Your Home June 8, 2016 - 5:08pm Addthis These examples of building integrated photovoltaic panels are like solar ...

  4. Community-Scale High-Performance with Solar: Pulte Homes, Tucson...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    a suite of energy-efficiency measures integrated with passive solar design and solar water heating that reduced energy use more than 50% for a community of more than 1,000 homes. ...

  5. Webinar: ENERGY STAR Hot Water Systems for High Performance Homes |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy ENERGY STAR Hot Water Systems for High Performance Homes Webinar: ENERGY STAR Hot Water Systems for High Performance Homes This presentation is from the Building America research team BA-PIRC webinar on September 30, 2011 providing informationprovide information about how to achieve energy savings from solar water heating, electric dedicated heat pump water heating, and gas tankless systems. es_hot_water_systems.pdf (7.66 MB) More Documents & Publications Tankless

  6. Piedmont EMC- Solar Water Heating Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Piedmont Electric Membership Corporation is offering a $500 rebate to its residential members who install solar water heaters on their homes. The utility recommends but does not require the system...

  7. Solar Energy Education. Home economics: teacher's guide. Field...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Home economics: teacher's guide. Field test edition. Includes glossary Citation Details In-Document Search Title: Solar Energy Education. Home economics: teacher's guide. Field ...

  8. High-Performance Home Technologies: Solar Thermal & Photovoltaic...

    Energy.gov [DOE] (indexed site)

    High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems (9.49 MB) More Documents & Publications Building America Whole-House Solutions for New Homes: John Wesley ...

  9. Solar Home in Glastonbury, Connecticut

    Energy.gov [DOE]

    This photograph features a building with a 2.52-kilowatt residential grid-tied solar photovoltaic (PV) electric system. The system generates clean electricity and feeds any excess into the local...

  10. What Do You Wish You Knew About Home Solar Energy?

    Energy.gov [DOE]

    Solar Decathlon 2011 is in full swing, and the Energy Savers blog is all about home solar energy during the event!

  11. High-Performance Home Technologies: Solar Thermal & Photovoltaic...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Solar Thermal & Photovoltaic Systems; Volume 6 Building America Best Practices Series High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems; Volume 6 ...

  12. Solar Energy Education. Home economics: student activities. Field...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Citation Details In-Document Search Title: Solar Energy Education. Home economics: student ... A view of solar energy from the standpoint of home economics is taken in this book of ...

  13. Planning a Home Solar Electric System | Department of Energy

    Energy.gov [DOE] (indexed site)

    Whether a home solar electric system will work for you depends on the available sun ... Whether a home solar electric system will work for you depends on the available sun ...

  14. Kiwis Take Home Engineering Win for Solar Home 'First Light' | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Kiwis Take Home Engineering Win for Solar Home 'First Light' Kiwis Take Home Engineering Win for Solar Home 'First Light' September 29, 2011 - 4:22pm Addthis “First Light,” the solar home from New Zealand, stands complete on the first day of the 2011 U.S. Department of Energy Solar Decathlon. The 25-student team from Victory University of Wellington won the Engineering Contest today, the fourth juried contest of the competition. "First Light," the solar home

  15. Building America Top Innovations 2012: Community Scale High Performance with Solar - Pulte Homes

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes Pulte Homes of Tucson’s work with Building America to apply a suite of energy-efficiency measures integrated with passive solar design and solar water heating that reduced energy use more than 50% for a community of more than 1,000 homes.

  16. Community-Scale High-Performance with Solar: Pulte Homes, Tucson, AZ- Building America Top Innovation

    Energy.gov [DOE]

    This Building America Innovations profile describes Pulte Homes of Tucson’s work with Building America to apply a suite of energy-efficiency measures integrated with passive solar design and solar water heating that reduced energy use more than 50% for a community of more than 1,000 homes.

  17. OUT Success Stories: Solar Hot Water Technology

    DOE R&D Accomplishments

    Clyne, R.

    2000-08-01

    Solar hot water technology was made great strides in the past two decades. Every home, commercial building, and industrial facility requires hot water. DOE has helped to develop reliable and durable solar hot water systems. For industrial applications, the growth potential lies in large-scale systems, using flat-plate and trough-type collectors. Flat-plate collectors are commonly used in residential hot water systems and can be integrated into the architectural design of the building.

  18. Harnessing Solar Energy at Home | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Harnessing Solar Energy at Home Harnessing Solar Energy at Home October 1, 2014 - 12:37pm Q&A What do you want to know about solar energy at home? Tell Us Addthis Solar panels are a great way to produce clean energy at home! | Photo courtesy of Stefano Paltera, U.S. Department of Energy. Solar panels are a great way to produce clean energy at home! | Photo courtesy of Stefano Paltera, U.S. Department of Energy. Paige Terlip Paige Terlip Former Communicator, National Renewable Energy

  19. Lumbee River EMC- Solar Water Heating Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Lumbee River EMC is offering $850 rebates to residential customers who install solar water heaters on their homes. To qualify, the systems must be certified OG-300 by the Solar Ratings and...

  20. Lumbee River EMC- Solar Water Heating Loan Program

    Energy.gov [DOE]

    Lumbee River EMC is offering 6% loans to residential customers for the installation of solar water heaters on their homes.  To qualify, the systems must be certified OG-300 by the Solar Ratings and...

  1. Commercial dissemination approaches for solar home systems

    SciTech Connect

    Terrado, E.

    1997-12-01

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

  2. Performance summary of the Balcomb solar home

    SciTech Connect

    Balcomb, J.D.; Hedstrom, J.C.; Perry, J.E. Jr.

    1981-01-01

    The heating performance of the Balcomb passive solar home is re-evaluated based on detailed review of 85 channels of data taken during six weeks of 1980. This led to a re-analysis of 176 days of data taken over the winter of 1978-79. Auxiliary heat during this winter was 7.4 million Btu which compares with 66.0 million Btu total heat losses from the house plus 46.4 million Btu losses from the greenhouse. Auxiliary heat predicted using the solar load ratio method is 8.1 million Btu. Solar savings are estimated as 57 million Btu. Good thermal comfort conditions are documented. Energy flows are tabulated for each month. Energy flows are tabulated for each month. Conclusions regarding detailed heat flow and storage in the house are presented.

  3. The Brightest in Solar Homes to Shine in Public Tour

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Brightest in Solar Homes to Shine in Public Tour For more information contact: e:mail: Public Affairs Golden, Colo., Oct. 4, 1996 -- The most innovative solar homes in the Denver-metro area will be open to the public Oct. 19 as part of the National Solar Home Tour sponsored by the American Solar Eerrgy Society (ASES) in Boulder. The tour includes 16 homes that reflect a range of passive- and active-solar technologies, styles and costs, from energy self-sufficient "off the grid"

  4. Performance of the biose cascade-INEL manufactured solar home

    SciTech Connect

    Lau, A S; Liebelt, K H; Scofield, M P; Shinn, N R

    1980-01-01

    Two manufactured active solar homes using air collectors and rock storage were designed, bult and are being tested. The cooperative, DOE-funded project involves. Boise Cascade Corporation and the Idaho National Engineering Laboratory (INEL). The two primary goals of the project are to develop an active solar heating system that is cost-effective now, and to provide significant market penetration through the involvement of Boise Cascade, a major manufacturer of factory built houses. A brief discussion of the houses and solar systems is included, with more detailed discussion of the desktop-computer based data acquisition system and initial performance results. The 1979 cooling season data indicated a need for modifications to achieve adequate cooling system performance. Data from the heating season showed good agreement with calculations, especially the house heat loss coefficient. However, solar heating fractions were lower than predicted and an examination of the collector operating efficiency showed the collector losses to be approximately three times higher than predicted. Tests are underway to better understand the large collection losses. Comparison of the performance data and f-chart predictions shows significant differences, with predicted solar fractions being lower than actual. The solar domestic hot water preheating system performed reasonably well, with significant thermal losses noticed from the auxiliary hot water heater. Recommendations are made for the design of solar air-heating systems.

  5. Effectiveness of energy rating systems in evaluating Solar Decathlon homes

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Effectiveness of energy rating systems in evaluating Solar Decathlon homes Elizabeth Buechler 1,2 , Alicen Kandt 2 , and Joe Simon 2 1 Tufts University, Medford, MA 2 National Renewable Energy Laboratory, Golden, CO Introduction Process Outcomes Conclusions & Future Work Acknowledgements What is the U.S. Department of Energy Solar Decathlon? * A competition managed by NREL. Every two years, approximately 20 teams compete to build the most energy-efficient solar home. * The custom homes use

  6. Entech Solar Inc formerly WorldWater Solar Technologies | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    Solar Inc formerly WorldWater Solar Technologies Jump to: navigation, search Name: Entech Solar Inc. (formerly WorldWater & Solar Technologies) Place: Fort Worth, Texas Zip: 76177...

  7. Installing and Maintaining a Home Solar Electric System | Department...

    Energy Saver

    Making sure your home solar electric or photovoltaic (PV) system is sized, sited, installed, and maintained correctly is essential for maximizing its energy performance. When...

  8. Solar energy and your home: questions and answers

    SciTech Connect

    Not Available

    1984-01-01

    This fact sheet provides a basic introduction to solar heating and cooling systems. It is intended for the many homeowners who could benefit from living in a solar home.

  9. Solar Energy and Your Home: Questions and Answers

    DOE R&D Accomplishments

    1984-01-01

    This fact sheet provides a basic introduction to solar heating and cooling systems. It is intended for the many homeowners who could benefit from living in a solar home.

  10. Portable solar water heater

    SciTech Connect

    Borodulin, G.; Baron, R.; Shkolnik, A.

    1985-11-12

    A combined table and portable solar water heater comprises a suitcase-like rigid casing molded from a rigid plastic material which contains a pair of solar collector panels and connected in series. The panels can be exposed to solar radiation when the casing is opened. Each collector panel or is formed by a copper plate with the solar radiation absorbing surface and copper pipe coil or in heat-transferring relationship with said copper plate. The casing is provided with compartments for accessories, such as adjustable legs for supporting the casing, adjusting its angle to incident sunlight, and for converting the casing into a table; containers for feeding cold water to the solar collector and for receiving hot water from the collector; and a tripod stand for supporting the feeding container at the level above the collector and for arranging a shower set. Temperature-insulating layers of the collectors are formed by separate pieces of rigid material which can be removed from the casing and assembled into a box-shaped container which can be utilized for maintaining water heated by means of the solar water heater at an elevated temperature.

  11. Building America Best Practices Series, Volume 6: High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems

    SciTech Connect

    Baechler, Michael C.; Gilbride, Theresa L.; Ruiz, Kathleen A.; Steward, Heidi E.; Love, Pat M.

    2007-06-04

    This guide is was written by PNNL for the US Department of Energy's Building America program to provide information for residential production builders interested in building near zero energy homes. The guide provides indepth descriptions of various roof-top photovoltaic power generating systems for homes. The guide also provides extensive information on various designs of solar thermal water heating systems for homes. The guide also provides construction company owners and managers with an understanding of how solar technologies can be added to their homes in a way that is cost effective, practical, and marketable. Twelve case studies provide examples of production builders across the United States who are building energy-efficient homes with photovoltaic or solar water heating systems.

  12. City of Palo Alto Utilities- Solar Water Heating Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    City of Palo Alto Utilities is offering incentives for their residential, commercial and industrial customers to install solar water heating systems on their homes and facilities with a goal of 1...

  13. City of Tallahassee Utilities- Solar Water Heating Rebate

    Office of Energy Efficiency and Renewable Energy (EERE)

    The homeowner must allow the City of Tallahassee to conduct an energy audit on the home in order to make a preliminary assessment of sun exposure and to provide program guidance. All solar water...

  14. Questar Gas- Residential Solar Assisted Water Heating Rebate Program

    Energy.gov [DOE]

    Questar Gas provides incentives for residential customers to purchase and install solar water heating systems on their homes. Rebates of $750 per system are provided to customers of Questar who...

  15. Questar Gas- Residential Solar Assisted Water Heating Rebate Program

    Energy.gov [DOE]

    Questar Gas provides incentives for residential customers to purchase and install solar water heating systems (both for domestic and pool heating uses) in their newly-constructed homes. Rebates of...

  16. RDI's Wisdom Way Solar Village Final Report: Includes Utility Bill Analysis of Occupied Homes

    SciTech Connect

    Robb Aldrich, Steven Winter Associates

    2011-07-01

    In 2010, Rural Development, Inc. (RDI) completed construction of Wisdom Way Solar Village (WWSV), a community of ten duplexes (20 homes) in Greenfield, MA. RDI was committed to very low energy use from the beginning of the design process throughout construction. Key features include: 1. Careful site plan so that all homes have solar access (for active and passive); 2. Cellulose insulation providing R-40 walls, R-50 ceiling, and R-40 floors; 3. Triple-pane windows; 4. Airtight construction (~0.1 CFM50/ft2 enclosure area); 5. Solar water heating systems with tankless, gas, auxiliary heaters; 6. PV systems (2.8 or 3.4kWSTC); 7. 2-4 bedrooms, 1,100-1,700 ft2. The design heating loads in the homes were so small that each home is heated with a single, sealed-combustion, natural gas room heater. The cost savings from the simple HVAC systems made possible the tremendous investments in the homes' envelopes. The Consortium for Advanced Residential Buildings (CARB) monitored temperatures and comfort in several homes during the winter of 2009-2010. In the Spring of 2011, CARB obtained utility bill information from 13 occupied homes. Because of efficient lights, appliances, and conscientious home occupants, the energy generated by the solar electric systems exceeded the electric energy used in most homes. Most homes, in fact, had a net credit from the electric utility over the course of a year. On the natural gas side, total gas costs averaged $377 per year (for heating, water heating, cooking, and clothes drying). Total energy costs were even less - $337 per year, including all utility fees. The highest annual energy bill for any home evaluated was $458; the lowest was $171.

  17. NREL Solar Technology Will Warm Air at 'Home' - News Feature...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    NREL Solar Technology Will Warm Air at 'Home' July 30, 2010 Photo of a building coved in ... to a wall at the RSF that uses their award-winning transpired air collector technology. ...

  18. Solar Successes: The Best of Today's Energy Efficient Homes

    SciTech Connect

    2008-01-01

    This is a brochure developed specifically for residential home builders. It provides information on basic financial factors and additional resources to consider when incorporating solar technologies into building plans.

  19. Installing and Maintaining a Home Solar Electric System | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    a Home Solar Electric System When choosing a contractor, ask about their work record, experience, and licenses, and get more than one bid for the installation of your PV...

  20. Printed decorative solar panels could become part of our homes...

    OpenEI (Open Energy Information) [EERE & EIA]

    content Printed decorative solar panels could become part of our homes and offices Hello, I provide user supp... The top one on this page: htt... Can you send the specific...

  1. Solar Home Tour and Exhibitor Showcase Open Doors to Renewable...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    To see how Andrews and 15 others are tapping into the energy of the sun, take the Denver Metro Tour of Solar Homes, hosted by the Colorado Renewable Energy Society (CRES), from 10 ...

  2. Solar Powering America Home | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    State and Local Governments Workforce Development About Solar Powering America Rotator-solarPower-America2.jpg Solar Powering America was formed by the U.S. Department of Energy ...

  3. High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems;

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Volume 6 Building America Best Practices Series | Department of Energy Home Technologies: Solar Thermal & Photovoltaic Systems; Volume 6 Building America Best Practices Series High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems; Volume 6 Building America Best Practices Series The sixth volume of the Building America Best Practices Series presents information that is useful throughout the United States for enhancing the energy efficiency practices in the specific

  4. Installing and Maintaining a Home Solar Electric System | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Home Solar Electric System Installing and Maintaining a Home Solar Electric System When choosing a contractor, ask about their work record, experience, and licenses, and get more than one bid for the installation of your PV system. | Photo courtesy of Dennis Schroeder, NREL. When choosing a contractor, ask about their work record, experience, and licenses, and get more than one bid for the installation of your PV system. | Photo courtesy of Dennis Schroeder, NREL. Making sure your

  5. Webinar: ENERGY STAR Hot Water Systems for High Performance Homes...

    Energy Saver

    ENERGY STAR Hot Water Systems for High Performance Homes Webinar: ENERGY STAR Hot Water Systems for High Performance Homes This presentation is from the Building America research ...

  6. On the Market: Buying and Selling a Solar Home | Department of...

    Energy.gov [DOE] (indexed site)

    On the Market: Buying and Selling a Solar Home Information on the premium boosting power of solar energy. On the Market: Buying and Selling a Solar Home (147.78 KB) More Documents ...

  7. Passive Solar Home Design | Department of Energy

    Energy Saver

    Weatherize » Moisture Control Moisture Control Controlling moisture can make your home more energy-efficient, less costly to heat and cool, more comfortable, and prevent mold growth. Controlling moisture can make your home more energy-efficient, less costly to heat and cool, more comfortable, and prevent mold growth. Properly controlling moisture in your home will improve the effectiveness of your air sealing and insulation efforts, and these efforts in turn will help control moisture. The best

  8. Solar Powering America Home | Department of Energy

    Energy.gov [DOE] (indexed site)

    Solar Powering America banner U.S. Department of Housing and Urban Development U.S. Department of Agriculture U.S. Environmental Protection Agency U.S. Department of Energy Solar ...

  9. Molded polymer solar water heater

    DOEpatents

    Bourne, Richard C.; Lee, Brian E.

    2004-11-09

    A solar water heater has a rotationally-molded water box and a glazing subassembly disposed over the water box that enhances solar gain and provides an insulating air space between the outside environment and the water box. When used with a pressurized water system, an internal heat exchanger is integrally molded within the water box. Mounting and connection hardware is included to provide a rapid and secure method of installation.

  10. Solar Water Heater Basics | Department of Energy

    Energy Saver

    Water Heating Solar Water Heater Basics Solar Water Heater Basics August 19, 2013 - 3:01pm Addthis Illustration of an active, closed loop solar water heater. A large, flat panel ...

  11. Solar Hot Water Hourly Simulation

    Energy Science and Technology Software Center

    2009-12-31

    The Software consists of a spreadsheet written in Microsoft Excel which provides an hourly simulation of a solar hot water heating system (including solar geometry, solar collector efficiency as a function of temperature, energy balance on storage tank and lifecycle cost analysis).

  12. Home retrofitting for energy conservation and solar considerations

    SciTech Connect

    Not Available

    1981-10-01

    This manual explains both the key concepts behind our need for and our impact on energy usage, as well as a nuts-and-bolts explanation of how to improve the energy efficiency of your home. By reviewing both the concepts and practices of energy conservation, the manual presents a comprehensive picture of how home energy use is effected by the inhabitants and by the structure itself. The manual begins with an explanation of why we are looking at energy, then proceeds to explain how the heat transfer occurs between houses and humans. Next is a chapter on energy audits and how to use them, followed by a comprehensive section on energy conservation actions to do now to reduce energy use. Conservation actions include low cost/no cost measures, schemes to reduce infiltration, how to increase insulation, and what to do with windows and doors, heating and heat distribution systems, and water heaters. Solar energy options are then briefly explained, as well as the all important issues of financing and tax credits. The manual concludes with a bibliography to direct the reader to more sources of information.

  13. Solar greenhouse as an integral part of an earth-sheltered home: the first two years

    SciTech Connect

    Malott, R.W.

    1984-01-01

    The construction of a solar greenhouse as an integral part of an earth-sheltered home is discussed. The problems of building such a home are described.

  14. Solar Decathlon 2015: Nation's Leading Sustainable Home Design

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Competition on the Horizon | Department of Energy Decathlon 2015: Nation's Leading Sustainable Home Design Competition on the Horizon Solar Decathlon 2015: Nation's Leading Sustainable Home Design Competition on the Horizon July 13, 2015 - 2:15pm Addthis The New York City College of Technology is weatherproofing its house, called DURA, at a Brooklyn Navy Yard construction site. | Photo courtesy of New York City College of Technology. The New York City College of Technology is weatherproofing

  15. Solar water heating panel

    SciTech Connect

    Burke, B.G.

    1984-10-02

    The present invention discloses a solar water heating panel and method of constructing such a solar panel from a pair of thin sheets bonded together around their peripheral edges and having at least one of the sheets formed with resiliently flexible areas defined by a plurality of abutting concave hexagonal areas or zones. The center of each hexagonal zone is formed as a dimple, concave with respect to the opposite sheet, whose radius of curvature is greater than the radius of an inscribed circle within said zone. The abutting zones between each hexagonal zone are formed convex relative to the opposite sheet and have a radius less than that of an inscribed circle. In a preferred form, the sheets are joined together at the center of alternate spaced-apart hexagonal areas. In this way, except for the centers bonded near the panel edges, each joined hexagonal center is surrounded by six unjoined areas to form both transverse and longitudinal flow passages through the panel.

  16. Solar Works in Seattle: Domestic Hot Water

    Office of Energy Efficiency and Renewable Energy (EERE)

    Seattle's residential solar hot water workshop. Content also covers general solar resource assessment, siting, and financial incentives.

  17. Columbia Water & Light- Solar Rebates

    Energy.gov [DOE]

    Columbia Water & Light electric customers are eligible for a $400 rebate for the purchase of a new solar water heater. To apply for this rebate, a customer submits a pre-approval application to...

  18. Columbia Water & Light- Home Performance with ENERGY STAR Loan

    Energy.gov [DOE]

    The Columbia Water & Light (CWL) Home Performance with ENERGY STAR program allows Columbia residents to finance energy efficiency improvements to homes with affordable, low-interest loans with...

  19. Passive Solar Home Design | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Passive solar design takes advantage of a building's site, climate, and materials to ... south-facing windows and retains it in materials that store heat, known as thermal mass. ...

  20. Columbia Water & Light- New Home ENERGY STAR Rebate

    Energy.gov [DOE]

    Columbia Water and Light offers a $1,000 rebate to customers for the construction of new homes that achieve certification as Energy Star homes. The Energy Star designation is given to homes that...

  1. Own Your Power! A Consumer Guide to Solar Electricity for the Home (Brochure)

    Office of Energy Efficiency and Renewable Energy (EERE)

    A consumer guide about solar electricity for the home. Includes information about types of solar electric systems, how to choose a system, financing, and costs.

  2. Own Your Power! A Consumer Guide to Solar Electricity for the Home

    SciTech Connect

    NREL

    2009-01-01

    A consumer guide about solar electricity for the home. It includes information about types of solar electric systems, how to choose a system, financing, and costs.

  3. Own Your Power! A Consumer Guide to Solar Electricity for the Home (Brochure)

    SciTech Connect

    Not Available

    2009-01-01

    A consumer guide about solar electricity for the home. Includes information about types of solar electric systems, how to choose a system, financing, and costs.

  4. Own Your Power! A Consumer Guide to Solar Electricity for the Home

    DOE R&D Accomplishments

    2009-01-01

    A consumer guide about solar electricity for the home. Includes information about types of solar electric systems, how to choose a system, financing, and costs.

  5. Save on Home Water Heating | Department of Energy

    Energy Saver

    on Home Water Heating Save on Home Water Heating August 19, 2014 - 10:46am Addthis Purchasing a water heater with the ENERGY STAR label ensures you are buying an energy ...

  6. #AskEnergySaver: Home Water Heating | Department of Energy

    Energy Saver

    Water Heating AskEnergySaver: Home Water Heating March 24, 2014 - 11:35am Addthis Did you know: Water heaters account for nearly 17 percent of a homes energy use, consuming ...

  7. Utility solar water heating workshops

    SciTech Connect

    Barrett, L.B. )

    1992-01-01

    The objective of this project was to explore the problems and opportunities for utility participation with solar water heating as a DSM measure. Expected benefits from the workshops included an increased awareness and interest by utilities in solar water heating as well as greater understanding by federal research and policy officials of utility perspectives for purposes of planning and programming. Ultimately, the project could result in better information transfer, increased implementation of solar water heating programs, greater penetration of solar systems, and more effective research projects. The objective of the workshops was satisfied. Each workshop succeeded in exploring the problems and opportunities for utility participation with solar water heating as a DSM option. The participants provided a range of ideas and suggestions regarding useful next steps for utilities and NREL. According to evaluations, the participants believed the workshops were very valuable, and they returned to their utilities with new information, ideas, and commitment.

  8. Solar Industry At Work: Streamlining Home Solar Installation

    Energy.gov [DOE]

    As Director of Operations at Sunrun, Tillie Peterson works to get solar panels up and running for homeowners as quickly and efficiently as possible.

  9. Solar Decathlon Team Using Appalachian Mountain History to Model Home of the Future

    Energy.gov [DOE]

    See how Appalachian State University used traditional mountain life architecture to design their 2011 Solar Decathlon home.

  10. Solar water heaters | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Solar water heaters Jump to: navigation, search (The following text is derived from the United States Department of Energy's description of Solar Water Heating technology.)1...

  11. Solar water heaters | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Solar water heaters (Redirected from - Solar Hot Water) Jump to: navigation, search (The following text is derived from the United States Department of Energy's description of...

  12. Solar Water Heating Webinar | Department of Energy

    Energy Saver

    Weatherization Assistance Program Pilot Projects Solar Water Heating Webinar Solar Water Heating Webinar Watch a recording of National Renewable Energy Laboratory (NREL) ...

  13. Home | Solid State Solar Thermal Energy Conversion

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Sponge creates steam using ambient sunlight MIT engineers have invented a bubble-wrapped, sponge-like device that... Read the full story The S3TEC Center aims at advancing fundamental science and developing materials to harness heat from the sun and convert this heat into electricity via thermoelectric, thermogalvanic and thermophotovoltaic technologies. Home Physicists predict previously unseen phenomena in exotic materials MIT News highlighted work in the S3TEC center led by Liang Fu... Read

  14. Factory-built integrated solar homes - A progress report

    SciTech Connect

    Rawlings, L.K.

    1995-12-31

    Over the past fifteen years, hundreds of people across the US have built for themselves highly advanced residences which integrated passive solar architecture; photovoltaic power systems; high-efficiency lights, appliances, and HVAC (heating, ventilating, and cooling) equipment; high-level insulation and airtight construction; and other renewable energy and energy-efficient technologies. Such a home can be referred to as an {open_quotes}integrated solar home{close_quotes}. As the essential technologies have improved in performance, price, and availability, the performance of such homes has steadily advanced to the point where they could provide amenities at more-or-less normal US standards of luxury, yet require as little as 5% to 10% of the level of fossil fuel or biomass use that are required in an average US home. However, the resources required to build such a home, both in terms of the time and dedication needed for research, design, and construction of the homes, and in terms of the additional cost of the renewable energy/energy efficient features, have prevented such construction from moving beyond a tiny handful of highly motivated homeowners and into the mainstream of residential construction. This paper has design summaries of six different houses.

  15. Passive solar heated energy conserving biosphere home. Final report

    SciTech Connect

    Piekarski, R.

    1985-01-01

    ''Warm Gold'' is an original design of a passive solar heated energy conserving biosphere home. It has been owner-built with financial help from the US Department of Energy through its Appropriate Technology Small Grants Program of 1980. The home incorporates the six major components of passive solar design: appropriate geometry and orientation, glazing, light levels and reflective surfaces, ventilation, thermal storage, and insulation. Warm Gold is an earth-sheltered home with earth cover on the roof as well as on the two opaque north leg walls. It is of durable and efficient masonry construction which included stone masonry with on-site materials and cement block and ready mix concrete. Excavation, backfill, and drainage were necessary aspects of earth sheltered construction together with the all-important Bentonite waterproofing system. Warm Gold is a house which meets all the national building code standards of HUD. The home has two bedrooms, one bathroom, living room, dining room-kitchen, greenhouse, and utility annex, all of which are incorporated with the earth-sheltered, passive solar systems to be a comfortable, energy-efficient living environment.

  16. Santa Clara Water & Sewer- Solar Water Heating Program

    Energy.gov [DOE]

    In 1975, the City of Santa Clara established the nation's first municipal solar utility. Under the Solar Water Heating Program, the Santa Clara Water & Sewer Utilities Department supplies,...

  17. Solar Energy Potential | Department of Energy

    Energy.gov [DOE] (indexed site)

    Sources Home Fossil Nuclear Renewable Energy Renewable Energy Home Biomass Geothermal Solar Water Wind Energy Efficiency Energy Efficiency Home Building Design Building Design...

  18. Solar Water Heat | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Water Heat Jump to: navigation, search TODO: Add description List of Solar Water Heat Incentives Retrieved from "http:en.openei.orgwindex.php?titleSolarWaterHeat&oldid26719...

  19. Do You Have a Solar Water Heater?

    Energy.gov [DOE]

    Earlier this week, Ernie wrote about the economics of getting a solar water heater. As Ernie explained, a solar water heater is more expensive than a normal water heater, but depending on your area...

  20. The Best and Brightest in Solar Homes Open to the Public

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The Best and Brightest in Solar Homes Open to the Public For more information contact: e:mail: Public Affairs Golden, Colo., Oct. 1, 1997 -- The most innovative designs in passive and active solar homes in the Denver-metro area will be open to the public October 18 as part of the second annual Colorado Tour of Solar Homes. More than 20 homes with state-of-the-art solar technologies in the Denver-Boulder area are included in the tour, sponsored by the American Solar Energy Society (ASES) in

  1. Columbia Water & Light- Home Performance with ENERGY STAR Rebates

    Energy.gov [DOE]

    Columbia Water and Light, a municipal utility, offers rebates to its residential customers who make certain energy efficient improvements to the home. Under the Home Performance with Energy Star...

  2. Loveland Water & Power- Home Energy Audit Rebate Program

    Energy.gov [DOE]

    Loveland Water & Power (LWP) is providing an incentive for customers living in single-family detached homes or attached townhouses that wish to upgrade the energy efficiency of eligible homes....

  3. Glendale Water and Power- Solar Solutions Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Solar Solutions program provides all customer groups with an incentive to install photovoltaic (PV) systems on their homes and buildings. Rebate levels will decrease over time on an annual...

  4. Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE | Department...

    Energy Saver

    Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE, from the ...

  5. High-Performance with Solar Electric Reduced Peak Demand: Premier Homes

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Rancho Cordoba, CA - Building America Top Innovation | Department of Energy with Solar Electric Reduced Peak Demand: Premier Homes Rancho Cordoba, CA - Building America Top Innovation High-Performance with Solar Electric Reduced Peak Demand: Premier Homes Rancho Cordoba, CA - Building America Top Innovation Photo of homes in Premier Gardens. As the housing market continues to evolve toward zero net-energy ready homes, Building America research has provided essential guidance for integrating

  6. SMUD- Solar Water Heater Rebate Program

    Energy.gov [DOE]

    The Sacramento Municipal Utility District's (SMUD) Solar Domestic Hot Water Program provides rebates and/or loan financing to customers who install solar water heating systems. The amount of the...

  7. Assessment of Unglazed Solar Domestic Water Heaters

    SciTech Connect

    Burch, J.; Salasovich, J.; Hillman, T.

    2005-12-01

    Conference paper investigating cost-performance tradeoffs in replacing glazed collectors with unglazed collectors in solar domestic water heating systems.

  8. Shopping for a Solar Home Made Easy - SunShot and the Future...

    Energy.gov [DOE] (indexed site)

    Solar homes are being sold across the country, but they can be hard to find and compare. ... Elevate Energy are working to ensure that solar is properly represented in multiple ...

  9. Selling the solar home '80: market findings for the housing industry

    SciTech Connect

    Not Available

    1980-01-01

    An overview of the current 1980's market for solar heated and cooled houses is presented. The study is based on the first, second, and third demonstration program grants awarded by HUD under the Solar Heating and Cooling Demonstration Act of 1974. The market data collection process included interviews with industry, public officials, and consumers. Profiles are provided of the typical demonstration solar house, builder, and purchaser. Considerations in planning the solar home and designing and building the home for the local market are reviewed. The attitudes and interests of the potential solar home purchaser are discussed and a profile of buyers and nonbuyers is presented; frequently asked questions are listed. Techniques and promotional tools for attracting solar home buyers are reviewed and the reactions of purchasers living in a solar house are cited. The general outlook for the solar housing market is discussed and is considered encouraging.

  10. Columbia Water & Light- Solar Energy Loans

    Energy.gov [DOE]

    Columbia Water & Light (CWL) offers electric residential and commercial customers low-interest loans for photovoltaic (PV) systems and solar water heaters.

  11. Solar water heating: FEMP fact sheet

    SciTech Connect

    Clyne, R.

    1999-09-30

    Using the sun to heat domestic water makes sense in almost any climate. Solar water heaters typically provide 40 to 80{percent} of a building's annual water-heating needs. A solar water-heating system's performance depends primarily on the outdoor temperature, the temperature to which the water is heated, and the amount of sunlight striking the collector.

  12. Affordable Solar Hot Water and Power LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Water and Power LLC Jump to: navigation, search Name: Affordable Solar Hot Water and Power LLC Place: Dothan, Alabama Zip: 36305 Sector: Solar Product: Solar and Energy Efficiency...

  13. Purchasing Energy-Efficient Residential Solar Water Heaters ...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Solar Water Heaters Purchasing Energy-Efficient Residential Solar Water Heaters The Federal Energy Management Program (FEMP) provides acquisition guidance for residential solar ...

  14. The California Energy Commission's New Solar Homes Partnership Program Case Study: Promoting Greener, Better Housing in California

    Energy.gov [DOE]

    This case study analyzes data from the California Energy Commission's New Solar Homes Partnership Program, part of California's comprehensive statewide solar program, the California Solar Initiative. At the time this study was conducted, the New Solar Homes Partnership Program had installed 14,100 solar energy systems totaling 45 megawatts of capacity.

  15. Commonwealth Solar Hot Water Commercial Program

    Energy.gov [DOE]

    Beginning in August 2011, the Massachusetts Clean Energy Center (MassCEC) will provide grants* for feasibility studies of commercial solar hot water systems through the Commonwealth Solar Hot Wat...

  16. Siting Your Solar Water Heating System | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Siting Your Solar Water Heating System Siting Your Solar Water Heating System Before you buy and install a solar water heating system, you need to first consider your site's solar...

  17. Siting Your Solar Water Heating System | Department of Energy

    Energy Saver

    Siting Your Solar Water Heating System Siting Your Solar Water Heating System Before you buy and install a solar water heating system, you need to first consider your site's solar ...

  18. Indonesia solar home systems project for rural electrification

    SciTech Connect

    Sanghvi, A.P.

    1997-12-01

    This paper presents, from a financing aspect the broad issues involved in a plan to provide solar home systems (SHS) to provide rural electrification in several areas of rural Indonesia. The paper discusses the approaches being used to provide funding, develop awareness of the technology, and assure the success of the project. The plan involves the use of grant money to help with some of the initial costs of such systems, and thereby to encourage local financing on a terms rather than cash basis. There are needs for market development, and development of a business structure in the country to support this type of technology. Provided this plan can succeed, it may serve as a model for further efforts.

  19. Innovative solar thermochemical water splitting.

    SciTech Connect

    Hogan, Roy E. Jr.; Siegel, Nathan P.; Evans, Lindsey R.; Moss, Timothy A.; Stuecker, John Nicholas; Diver, Richard B., Jr.; Miller, James Edward; Allendorf, Mark D.; James, Darryl L.

    2008-02-01

    Sandia National Laboratories (SNL) is evaluating the potential of an innovative approach for splitting water into hydrogen and oxygen using two-step thermochemical cycles. Thermochemical cycles are heat engines that utilize high-temperature heat to produce chemical work. Like their mechanical work-producing counterparts, their efficiency depends on operating temperature and on the irreversibility of their internal processes. With this in mind, we have invented innovative design concepts for two-step solar-driven thermochemical heat engines based on iron oxide and iron oxide mixed with other metal oxides (ferrites). The design concepts utilize two sets of moving beds of ferrite reactant material in close proximity and moving in opposite directions to overcome a major impediment to achieving high efficiency--thermal recuperation between solids in efficient counter-current arrangements. They also provide inherent separation of the product hydrogen and oxygen and are an excellent match with high-concentration solar flux. However, they also impose unique requirements on the ferrite reactants and materials of construction as well as an understanding of the chemical and cycle thermodynamics. In this report the Counter-Rotating-Ring Receiver/Reactor/Recuperator (CR5) solar thermochemical heat engine and its basic operating principals are described. Preliminary thermal efficiency estimates are presented and discussed. Our ferrite reactant material development activities, thermodynamic studies, test results, and prototype hardware development are also presented.

  20. Solar Water Heaters | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    They are popular in climates prone to freezing temperatures. Illustration of an active, closed loop solar water heater. A large, flat panel called a flat plate collector is ...

  1. Clark Public Utilities- Solar Water Heater Rebate

    Energy.gov [DOE]

    In addition, Clark Public Utilities offers a loan program for eligible solar water heater equipment. For additional information, call Energy Services at (360) 992-3355.

  2. Valley Electric Association- Solar Water Heating Program

    Energy.gov [DOE]

    Valley Electric Association (VEA), a nonprofit member owned cooperative, developed the domestic solar water heating program to encourage energy efficiency at the request of the membership. VEA...

  3. Solar Water Heating System Maintenance and Repair | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Water Heating System Maintenance and Repair Solar Water Heating System Maintenance and Repair Rooftop solar water heaters need regular maintenance to operate at peak efficiency. |...

  4. Solar Water Heating System Maintenance and Repair | Department...

    Energy Saver

    Water Heating System Maintenance and Repair Solar Water Heating System Maintenance and Repair Rooftop solar water heaters need regular maintenance to operate at peak efficiency. | ...

  5. DOE Zero Energy Ready Home Efficient Hot Water Distribution II...

    Energy.gov [DOE] (indexed site)

    with the Challenge Home program and here to set this up for you. Today's session on hot water distribution is one of a continuing series of tech training webinars to support our...

  6. DOE Zero Energy Ready Home Efficient Hot Water Distribution I...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    I -- What's At Stake Webinar (Text Version) DOE Zero Energy Ready Home Efficient Hot Water Distribution I -- What's At Stake Webinar (Text Version) Below is the text version of the...

  7. Secretary Chu Announces More Stringent Appliance Standards for Home Water

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Heaters and Other Heating Products | Department of Energy Stringent Appliance Standards for Home Water Heaters and Other Heating Products Secretary Chu Announces More Stringent Appliance Standards for Home Water Heaters and Other Heating Products April 1, 2010 - 12:00am Addthis WASHINGTON - U.S. Department of Energy Secretary Steven Chu announced today that the Department has finalized higher energy efficiency standards for a key group of heating appliances that will together save consumers

  8. List of Solar Water Heat Incentives | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Photovoltaics Solar Water Heat Ground Source Heat Pumps Yes City and County of Denver - Solar Panel Permitting (Colorado) SolarWind Permitting Standards Colorado Commercial...

  9. Diagnosis of Solar Water Heaters Using Solar Storage Tank Surface Temperature Data: Preprint

    SciTech Connect

    Burch, J.; Magnuson, L.; Barker, G.; Bullwinkel, M.

    2009-04-01

    Study of solar water heaters by using surface temperature data of solar storage tanks to diagnose proper operations.

  10. Solar Successes: The Best of Today's Energy Efficient Homes (Fact Sheet)

    SciTech Connect

    Not Available

    2008-01-01

    This is a brochure developed specifically for residential home builders. It provides information on basic financial factors and additional resources to consider when incorporating solar technologies into building plans.

  11. NREL: Water Power Research Home Page

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Water Power Research NREL's water power technologies research leverages 35 years of experience developing renewable energy technologies to support the U.S. Department of Energy ...

  12. Sustainable Energy Resources for Consumers Webinar on Solar Water...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Solar Water Heating Transcript Sustainable Energy Resources for Consumers Webinar on Solar Water Heating Transcript Video recording transcript of a Webinar on Nov. 16, 2010 about ...

  13. Solar Hot Water Market Development in Knoxville, TN

    Energy.gov [DOE]

    Assessment of local solar hot water markets, market variables, market barriers, and suggested strategies to increase solar hot water deployment in the city and county.

  14. Solar Water Splitting: Putting an Extra "Eye" on Surface Reactions...

    Office of Science (SC)

    Solar Water Splitting: Putting an Extra "Eye" on Surface Reactions that Store Sunlight as ... Solar Water Splitting: Putting an Extra "Eye" on Surface Reactions that Store Sunlight as ...

  15. Extremely stable bare hematite photoanode for solar water splitting...

    Office of Scientific and Technical Information (OSTI)

    Extremely stable bare hematite photoanode for solar water splitting Prev Next Title: Extremely stable bare hematite photoanode for solar water splitting Authors: Dias, Paula ; ...

  16. Building Codes and Regulations for Solar Water Heating Systems...

    Office of Environmental Management (EM)

    Building Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems June 24, 2012 - 1:50pm Addthis Photo Credit:...

  17. Building America Case Study: Solar Water Heating in Multifamily...

    Energy Saver

    Solar Water Heating in Multifamily Buildings Greenfield, Massachusetts PROJECT INFORMATION ... Incentives Used: * Commonwealth Solar Hot Water Program * 30% Federal tax credit * ...

  18. Building Codes and Regulations for Solar Water Heating Systems...

    Energy Saver

    Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems Photo Credit: iStockphoto Photo Credit: iStockphoto Before ...

  19. Expansion and Improvement of Solar Water Heating Technology in...

    OpenEI (Open Energy Information) [EERE & EIA]

    and Improvement of Solar Water Heating Technology in China Project Management Office Jump to: navigation, search Name: Expansion and Improvement of Solar Water Heating Technology...

  20. Heat Pump Water Heaters and American Homes: A Good Fit?

    SciTech Connect

    Franco, Victor; Lekov, Alex; Meyers, Steve; Letschert, Virginie

    2010-05-14

    Heat pump water heaters (HPWHs) are over twice as energy-efficient as conventional electric resistance water heaters, with the potential to save substantial amounts of electricity. Drawing on analysis conducted for the U.S. Department of Energy's recently-concluded rulemaking on amended standards for water heaters, this paper evaluates key issues that will determine how well, and to what extent, this technology will fit in American homes. The key issues include: 1) equipment cost of HPWHs; 2) cooling of the indoor environment by HPWHs; 3) size and air flow requirements of HPWHs; 4) performance of HPWH under different climate conditions and varying hot water use patterns; and 5) operating cost savings under different electricity prices and hot water use. The paper presents the results of a life-cycle cost analysis of the adoption of HPWHs in a representative sample of American homes, as well as national impact analysis for different market share scenarios. Assuming equipment costs that would result from high production volume, the results show that HPWHs can be cost effective in all regions for most single family homes, especially when the water heater is not installed in a conditioned space. HPWHs are not cost effective for most manufactured home and multi-family installations, due to lower average hot water use and the water heater in the majority of cases being installed in conditioned space, where cooling of the indoor environment and size and air flow requirements of HPWHs increase installation costs.

  1. Solar Decathlon Entry Uses iPad to Monitor Home | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Entry Uses iPad to Monitor Home Solar Decathlon Entry Uses iPad to Monitor Home August 25, 2011 - 6:27pm Addthis Erik Hyrkas Erik Hyrkas Media Relations Specialist, Office of Energy Efficiency & Renewable Energy How can I participate? The next Solar Decathlon will be held Sept. 23-Oct. 2, 2011, at the National Mall's West Potomac Park in Washington, D.C. Come check it out! In honor of the U.S Department of Energy's Solar Decathlon -- which challenges 20 collegiate teams to design, build and

  2. Solar Decathlon Teams Working Around the Clock to Assemble Homes For

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Competition | Department of Energy Teams Working Around the Clock to Assemble Homes For Competition Solar Decathlon Teams Working Around the Clock to Assemble Homes For Competition September 14, 2011 - 12:59pm Addthis The City College of New York team gathers at the 2011 Solar Decathlon’s All-Team Meeting, immediately before the assembly stage of the competition. | Photo Credit: Carol Anna/U.S. Department of Energy Solar Decathlon. The City College of New York team gathers at the 2011

  3. NREL's Solar Radiation Research Laboratory Offers a Mesa-Top Home for

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Global Measurement Accuracy - News Feature | NREL NREL's Solar Radiation Research Laboratory Offers a Mesa-Top Home for Global Measurement Accuracy October 11, 2016 Two men hunch over solar radiation instruments outdoors. James Augustyn (left) and former NREL scientist Tom Stoffel take readings to calibrate their instruments at this year's NREL Pyrheliometer Comparisons, held the last week of September at the Solar Radiation Research Laboratory. Photo by Dennis Schroeder, NREL This

  4. NREL's Solar Radiation Research Laboratory Offers a Mesa-Top Home for

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Global Measurement Accuracy | Energy Systems Integration | NREL NREL's Solar Radiation Research Laboratory Offers a Mesa-Top Home for Global Measurement Accuracy October 11, 2016 Two men hunch over solar radiation instruments outdoors. James Augustyn (left) and former NREL scientist Tom Stoffel take readings to calibrate their instruments at this year's NREL Pyrheliometer Comparisons, held the last week of September at the Solar Radiation Research Laboratory. Photo by Dennis Schroeder, NREL

  5. NREL's Solar Radiation Research Laboratory Offers a Mesa-Top Home for

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Global Measurement Accuracy | Grid Modernization | NREL NREL's Solar Radiation Research Laboratory Offers a Mesa-Top Home for Global Measurement Accuracy October 11, 2016 Two men hunch over solar radiation instruments outdoors. James Augustyn (left) and former NREL scientist Tom Stoffel take readings to calibrate their instruments at this year's NREL Pyrheliometer Comparisons, held the last week of September at the Solar Radiation Research Laboratory. Photo by Dennis Schroeder, NREL This

  6. Combining Solar and Home Performance Services | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    More Documents & Publications Think Again A Fresh Look at Home Performance Business Models and Service Offerings (301) Lessons Learned: Peer Exchange Calls -- No. 3 Voluntary ...

  7. System manual for the University of Pennsylvania retrofitted solar heated Philadelphia row home (SolaRow)

    SciTech Connect

    Zinnes, I.; Lior, N.

    1980-05-01

    The University of Pennsylvania SolaRow house, an urban row home retrofitted for comfort and domestic hot water heating, was extensively instrumented for performance monitoring and acquisition of weather and solar radiation data. This report describes the heating and instrumentation systems, provides the details for instrumentation, piping and valve identification, and specifies the operation and maintenance of the heating and data acquisition systems. The following are included: (1) system flow diagrams; (2) valve and cable identification tables; (3) wiring diagrams; and (4) start-up, normal operation, shut-down, maintenance and trouble-shooting procedures. It thus provides the necessary technical information to permit system operation and monitoring, overall system performance analysis and optimization, and acquisition of climatological data.

  8. Nationwide: Slashing Red Tape To Speed Solar Deployment for Homes...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Chicago Solar Express Reduces Costs, Wait Times Mercer Island celebrates the 500th Solarize installation in the state of Washington with a ribbon cutting at the Auto-Spa car wash. ...

  9. WATER POWER SOLAR POWER WIND POWER

    Energy Saver

    coloring book get curren WATER POWER SOLAR POWER WIND POWER Be part of the Clean Energy Generation YOUR HOUSE BIOMASS ENERGY GEOTHERMAL ENERGY Clean energy can come from the sun. ...

  10. Commonwealth Solar Hot Water Residential Program

    Energy.gov [DOE]

    Since February 2011, the Massachusetts Clean Energy Center (MassCEC) has provided rebates for the installation of residential and small commercial solar hot water systems through the Commonwealth...

  11. CPS Energy- Solar Hot Water Rebate Program

    Energy.gov [DOE]

    As part of a larger program designed to reduce electricity demand within its service territory, CPS Energy now offers rebates for solar water heaters to its customers. In general, any CPS Energy...

  12. Lakeland Electric- Solar Water Heating Program

    Energy.gov [DOE]

    Lakeland Electric, a municipal utility in Florida, offers solar-heated domestic hot water on a "pay-for-energy" basis. The utility bills the customer $34.95 per month regardless of use. The $34.95...

  13. HIA 2015 DOE Zero Energy Ready Home Case Study: Habitat for Humanity...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... Agency's Indoor airPLUS. Each home meets the hot water distribution ... In addition, homes are required to have solar electric panels installed or have the conduit and ...

  14. drinking water

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    drinking water - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us ... Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 ...

  15. Water Security

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Water Security - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us ... Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 ...

  16. Heat Transfer Fluids for Solar Water Heating Systems | Department...

    Energy.gov [DOE] (indexed site)

    Illustration of a solar water heater. Illustration of a solar water heater. Heat-transfer fluids carry heat through solar collectors and a heat exchanger to the heat storage tanks...

  17. Renewable energy technologies for federal facilities: Solar water heating

    SciTech Connect

    1996-05-01

    This sheet presents information on solar water heaters (passive and active), solar collectors (flat plate, evacuated tube, parabolic trough), lists opportunities for use of solar water heating, and describes what is required and the costs. Important terms are defined.

  18. New energy-conserving passive solar single-family homes. Cycle 5, Category 2 HUD solar heating and cooling demonstration program

    SciTech Connect

    Not Available

    1981-01-01

    The 91 new single-family, energy-conserving passive solar homes described represent award winning designs of the series of five demonstration cycles of the HUD program. Information is presented to help builders and lenders to understand passive solar design, to recognize passive solar buildings, and to provide specific design, construction, and marketing suggestions and details. The first section describes the concept of passive solar energy, explains the various functions which passive solar systems must perform, and discusses the various types of passive systems found in the Cycle 5 projects. The second section discusses each of the 91 solar homes. The third section details the issues of climate requirements and site design concerns, gives examples of building construction, and suggests how to market solar homes. The appendices address more technical aspects of the design and evaluation of passive solar homes.

  19. Sustainable Energy Resources for Consumers Webinar on Solar Water Heating

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Transcript | Department of Energy Solar Water Heating Transcript Sustainable Energy Resources for Consumers Webinar on Solar Water Heating Transcript Video recording transcript of a Webinar on Nov. 16, 2010 about residential solar water heating applications solar_water_heating_webinar.pdf (152.62 KB) More Documents & Publications Sustainable Energy Resources for Consumers (SERC) - Solar Hot Water Sustainable Energy Resources for Consumers Webinar on Residential Water Heaters Sustainable

  20. Heat Exchangers for Solar Water Heating Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems Image of a heat exchanger. | Photo from iStockphoto.com Image of a heat exchanger. | Photo from iStockphoto.com Solar water heating systems use heat exchangers to transfer solar energy absorbed in solar collectors to the liquid or air used to heat water or a space. Heat exchangers can be made of steel, copper, bronze, stainless steel, aluminum, or cast iron. Solar heating systems usually use copper,

  1. Solar Hot Water Contractor Licensing

    Energy.gov [DOE]

    In order to obtain one of these specialty licenses, installers must meet the following criteria. The applicant for a Restricted Solar Mechanic license must provide the Arkansas Department of...

  2. Builders Challenge High Performance Builder Spotlight: Tim O'Brien Homes, Waukesha, Wisconsin

    SciTech Connect

    2009-12-22

    This Building America Builders Challenge home features efficiency upgrades of geothermal heat pump, PV, solar hot water, and added insulation.

  3. City of Lancaster- Mandatory Solar Requirement for New Homes

    Energy.gov [DOE]

    PV is not required on all homes within a production subdivision, but the builder must meet the aggregate requirement within the subdivision. For example, one house with twice the required PV can ...

  4. NREL: Concentrating Solar Power Research - TroughNet Home Page

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Steam is coming out of the generation system building. Power Plant Systems Parabolic Trough Data and Resources Industry Partners Solar Data Power Plant Data Models and Tools System ...

  5. Solar Decathlon Homes-- They’re Not Just for Show

    Energy.gov [DOE]

    Have you ever wondered what happens to Solar Decathlon Houses after the competition? We explore where some of the houses are now.

  6. Active Solar Heating | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Home Heating Systems » Active Solar Heating Active Solar Heating This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system supplies both domestic hot water and a secondary radiant floor heating system. | Photo courtesy of Jim Schmid Photography, NREL This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system supplies both domestic hot water and a secondary radiant floor heating

  7. Solar

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ... Sciences Applications National Solar Thermal Test Facility Nuclear Energy ...

  8. NREL Solar Technology Will Warm Air at 'Home' - News Feature | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    NREL Solar Technology Will Warm Air at 'Home' July 30, 2010 Photo of a building coved in perforated metal, with two men standing next to it. Enlarge image NREL's Craig Christensen and Chuck Kutscher stand next to a wall at the RSF that uses their award-winning transpired air collector technology. Credit: Dennis Schroeder Sometimes the way back home isn't straightforward. But once you find your way, you know you'll be welcomed with open arms. Transpired solar air collector technology PDF ,

  9. PV vs. Solar Water Heating- Simple Solar Payback

    Energy.gov [DOE]

    Solar energy systems hang their hats on payback. Financial payback is as tangible as money in your bank account, while other types of payback—like environmental externalities—are not usually calculated in dollars. There’s no doubt that photovoltaic (PV) and solar hot water (SHW) systems will pay you back. Maybe not as quickly as you’d like, but all systems will significantly offset their cost over their lifetimes. Here we’ll try to answer: Which system will give the quickest return on investment (ROI)?

  10. Solar Decathlon at Home in the D.C. Community | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    at Home in the D.C. Community Solar Decathlon at Home in the D.C. Community December 4, 2012 - 4:25pm Addthis One of the new homeowners, Layika Culley, and her family cut the ribbon to her new ultra-efficient home in the historic Deanwood neighborhood. For more photos of the Empowerhouse ribbon cutting, <a href="/node/580963">view our photo gallery</a>. | Photo courtesy of Sarah Gerrity, Energy Department. One of the new homeowners, Layika Culley, and her family cut the

  11. Solar Water Heating System Maintenance and Repair | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Water Heating System Maintenance and Repair Solar Water Heating System Maintenance and Repair May 30, 2012 - 2:35pm Addthis Rooftop solar water heaters need regular maintenance to...

  12. Homebuilder's Guide to Going Solar

    DOE R&D Accomplishments

    2008-12-01

    This 8-page brochure describes the steps a builder would take to install solar electricity (photovoltaics or PV), solar water heating, or how to build a home solar ready.

  13. Selling Into the Sun: Price Premium Analysis of a Multi-State Dataset of Solar Homes

    Energy.gov [DOE]

    Homes with solar photovoltaic (PV) systems have multiplied in the United States recently, reaching more than half a million in 2014, in part due to plummeting PV costs and innovative financing options. As PV systems become an increasingly common feature of U.S. homes, the ability to assess the value of these homes appropriately will become increasingly important. At the same time, capturing the value of PV to homes will be important for facilitating a robust residential PV market. Appraisers and real estate agents have made strides toward valuing PV homes, and several limited studies have suggested the presence of PV home premiums; however, gaps remain in understanding these premiums for housing markets nationwide. To fill these gaps, researchers from Lawrence Berkeley National Laboratory (LBNL) and their collaborators from other institutions conducted the most comprehensive PV home premium analysis to date. The study more than doubles the number of PV home sales previously analyzed, examines transactions in eight states, and spans the years 2002–2013. The results impart confidence that PV consistently adds value across a variety of states, housing and PV markets, and home types.

  14. High-Performance Home Technologies: Solar Thermal & Photovoltaic...

    Energy Saver

    ... Average 15 Minute Interval Peak Demand ZEH vs. Non-ZEH July, ... Technologies: Solar Thermal & Photovoltaic ... The most basic part of many PV systems is the Cell. A cell ...

  15. Homes

    Energy.gov [DOE]

    Learn about how the Energy Department is working to improve energy use in homes and ways you can take action to reduce your home's energy bills.

  16. Heat Exchangers for Solar Water Heating Systems | Department...

    Energy.gov [DOE] (indexed site)

    from iStockphoto.com Image of a heat exchanger. | Photo from iStockphoto.com Solar water heating systems use heat exchangers to transfer solar energy absorbed in solar...

  17. July 17 ESTAP Webinar: Resilient Solar-Storage Systems for Homes and Commercial Facilities

    Energy.gov [DOE]

    On Wednesday, July 17 from 2 – 3 p.m. ET, Clean Energy States Alliance will host a webinar on resilient solar-storage systems for homes and commercial facilities. The webinar will be introduced by Dr. Imre Gyuk, Energy Storage Program Manager in the Office of Electricity Delivery and Energy Reliability.

  18. Passive solar retrofit: how to add natural heating and cooling to your home

    SciTech Connect

    Strickler, D.J.

    1982-01-01

    This do-it-yourself guide includes information on planning and maintaining a passive retrofit home. Information is given on: evaluating an individual house; climate, and situation; deciding on most appropriate solar features; determining the need for outside help and locating it; applying for financial assistance and tax credits; choosing materials; and construction. Also covered are: house insulation, auxiliary heating and cooling, decorating the passive solar retrofit, essential weather data, construction guidelines, a list of manufacturers of solar materials, and a reference supplement are included.

  19. Illuminating Solar Decathlon Homes: Exploring Next Generation Lighting Technology - Light Emitting Diodes

    SciTech Connect

    Gordon, Kelly L.; Gilbride, Theresa L.

    2008-05-22

    This report was prepared by PNNL for the US Department of Energy Building Technologies Program, Solid-State Lighting Program. The report will be provided to teams of university students who are building houses for the 2009 Solar Decathlon, a home design competition sponsored in part by DOE, to encourage teams to build totally solar powered homes. One aspect of the competition is lighting. This report provides the teams with information about LED lighting that can help them determine how they incorporate LED lighting into their homes. The report provides an overview of LED technology, a status of where LED technology is today, questions and answers about lighting quality, efficiency, lifetime etc.; numerous examples of LED products; and several weblinks for further research.

  20. Research & Development Needs for Building-Integrated Solar Technologie...

    Energy.gov [DOE] (indexed site)

    and cooling, water heating, hybrid photovoltaic-thermal systems (PVT), active solar ... Home Technologies: Solar Thermal & Photovoltaic Systems; Volume 6 Building America ...

  1. Optimum hot water temperature for absorption solar cooling

    SciTech Connect

    Lecuona, A.; Ventas, R.; Venegas, M.; Salgado, R.; Zacarias, A.

    2009-10-15

    The hot water temperature that maximizes the overall instantaneous efficiency of a solar cooling facility is determined. A modified characteristic equation model is used and applied to single-effect lithium bromide-water absorption chillers. This model is based on the characteristic temperature difference and serves to empirically calculate the performance of real chillers. This paper provides an explicit equation for the optimum temperature of vapor generation, in terms of only the external temperatures of the chiller. The additional data required are the four performance parameters of the chiller and essentially a modified stagnation temperature from the detailed model of the thermal collector operation. This paper presents and discusses the results for small capacity machines for air conditioning of homes and small buildings. The discussion highlights the influence of the relevant parameters. (author)

  2. High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems

    SciTech Connect

    Baechler, M.; Gilbride, T.; Ruiz, K.; Steward, H.; Love, P.

    2007-06-01

    This document is the sixth volume of the Building America Best Practices Series. It presents information that is useful throughout the United States for enhancing the energy efficiency practices in the specific climate zones that are presented in the first five Best Practices volumes. It provides an introduction to current photovoltaic and solar thermal building practices. Information about window selection and shading is included.

  3. Heat Exchangers for Solar Water Heating Systems | Department...

    Energy Saver

    Heat Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems Image of a heat exchanger. | Photo from iStockphoto.com Image of a heat exchanger. |...

  4. U.S. Virgin Islands- Solar Water Heater Rebate Program

    Energy.gov [DOE]

    A household can receive a maximum of two solar water heater rebates. Rebate amounts vary slightly based upon installed equipment. Rebates will be $1,250 for solar water heaters with an OG-300 rat...

  5. Solar Water Heating with Low-Cost Plastic Systems (Brochure)

    SciTech Connect

    Not Available

    2012-01-01

    Newly developed solar water heating technology can help Federal agencies cost effectively meet the EISA requirements for solar water heating in new construction and major renovations. This document provides design considerations, application, economics, and maintenance information and resources.

  6. Everything You Wanted to Know About Solar Water Heating Systems...

    Energy Saver

    Everything You Wanted to Know About Solar Water Heating Systems Everything You Wanted to Know About Solar Water Heating Systems October 7, 2014 - 2:39pm Q&A What do you want to ...

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

    SciTech Connect

    2009-09-03

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

  8. Solar in the Real World: Tour of Solar Homes Begins in October

    Energy.gov [DOE]

    The National Solar Tour takes place annually during the first Saturday in October in conjunction with National Energy Awareness Month.

  9. Monitoring SERC Technologies - Solar Hot Water | Department of...

    Energy Saver

    Hot Water Monitoring SERC Technologies - Solar Hot Water On October 27, 2011, Eliza Hotchkiss, an analyst at the National Renewable Energy Laboratory, presented a Webinar about ...

  10. energy-water interdependency

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    water interdependency - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us ... Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 ...

  11. "smart water" infrastructure

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    smart water" infrastructure - Sandia Energy Energy Search Icon Sandia Home Locations ... Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 ...

  12. Wind & Water Power Newsletter

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    & Water Power Newsletter - Sandia Energy Energy Search Icon Sandia Home Locations Contact ... Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 ...

  13. Energy-Water Nexus

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Energy-Water Nexus - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us ... Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 ...

  14. Homebuilder's Guide to Going Solar (Brochure)

    SciTech Connect

    Not Available

    2008-12-01

    This 8-page brochure describes the steps a builder would take to install solar electricity (photovoltaics or PV), solar water heating, or how to build a home solar ready.

  15. Project SUNN solar home (APTECH AZ-81-54). Final report

    SciTech Connect

    Birkey, R.C.

    1983-01-01

    The design and construction of the SUNN solar home utilizing energy conservation relevant to the constuction needs of the Navajo Nation has met with success, most particularly in its initial student and Navajo leadership training programs. The overall size of the structural concept was increased dramatically (from the modest 700 to 900 square foot model to an 1856 sq. ft. structure) in order to accommodate the Window Rock School District with a practical building and the placement of SUNN home in a highly visible area of the school grounds. A cooperation was formed with the school district with intentions to increase the potential for publicity, community involvement, utilize students in the construction process, and develop professional interest in the utilization and transfer of SUNN home technologies for other Navajo communities.

  16. Passive solar design strategies: Remodeling guidelines for conserving energy at home

    SciTech Connect

    Not Available

    1991-01-01

    The idea of passive solar is simple, but applying it effectively does require information and attention to the details of design and construction. Some passive solar techniques are modest and low-cost, and require only small changes in remodeler's typical practice. At the other end of the spectrum, some passive solar systems can almost eliminate a house's need for purchased heating (and in some cases, cooling) energy -- but probably at a relatively high first cost. In between are a broad range of energy-conserving passive solar techniques. Whether or not they are cost-effective, practical and attractive enough to offer a market advantage to any individual remodeler depends on very specific factors such as local costs, climate, and market characteristics. Passive solar design strategies: Remodeling Guidelines For Conserving Energy At Homes is written to help give remodelers the information they need to make these decisions. Passive Solar Design Strategies is a package in three basic parts: The Guidelines contain information about passive solar techniques and how they work, and provides specific examples of systems which will save various percentages of energy; The Worksheets offer a simple, fill-in-the-blank method to pre-evaluate the performance of a specific design; The Worked Example demonstrates how to complete the worksheets for a typical residence.

  17. Home Front Inc.: Hot, Humid Climate Region 40+% Energy Savings

    SciTech Connect

    2009-08-13

    This case study describes a model prototype home kit that is efficient and affordable and includes high-performance mechanical systems, HVAC, and solar water heating.

  18. What to expect from a batch solar water heater

    SciTech Connect

    Stickney, B.

    1984-01-01

    Batch solar water heaters are becoming more popular because of their low initial cost and simplicity of operation. Batch type water heaters have the following features in common: a water tank or tanks, an insulated tank enclosure, a glazed collecter surface, and a reflector system. The advantages of this type of solar water heater are discussed.

  19. Solar

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Applications National Solar Thermal Test Facility ... EnergyWater Nexus EnergyWater History Water Monitoring & ... Market Transformation Fuel Cells Predictive Simulation of ...

  20. Disaggregating Hot Water Use and Predicting Hot Water Waste in Five Test Homes

    SciTech Connect

    Henderson, Hugh; Wade, Jeremy

    2014-04-01

    While it is important to make the equipment (or "plant") in a residential hot water system more efficient, the hot water distribution system also affects overall system performance and energy use. Energy wasted in heating water that is not used is estimated to be on the order of 10%-30% of total domestic hot water (DHW) energy use. This field monitoring project installed temperature sensors on the distribution piping (on trunks and near fixtures) in five houses near Syracuse, NY, and programmed a data logger to collect data at 5 second intervals whenever there was a hot water draw. This data was used to assign hot water draws to specific end uses in the home as well as to determine the portion of each hot water that was deemed useful (i.e., above a temperature threshold at the fixture). Overall, the procedures to assign water draws to each end use were able to successfully assign about 50% of the water draws, but these assigned draws accounted for about 95% of the total hot water use in each home. The amount of hot water deemed as useful ranged from low of 75% at one house to a high of 91% in another. At three of the houses, new water heaters and distribution improvements were implemented during the monitoring period and the impact of these improvements on hot water use and delivery efficiency were evaluated.

  1. Disaggregating Hot Water Use and Predicting Hot Water Waste in Five Test Homes

    SciTech Connect

    Henderson, H.; Wade, J.

    2014-04-01

    While it is important to make the equipment (or 'plant') in a residential hot water system more efficient, the hot water distribution system also affects overall system performance and energy use. Energy wasted in heating water that is not used is estimated to be on the order of 10 to 30 percent of total domestic hot water (DHW) energy use. This field monitoring project installed temperature sensors on the distribution piping (on trunks and near fixtures) and programmed a data logger to collect data at 5 second intervals whenever there was a hot water draw. This data was used to assign hot water draws to specific end uses in the home as well as to determine the portion of each hot water that was deemed useful (i.e., above a temperature threshold at the fixture). Five houses near Syracuse NY were monitored. Overall, the procedures to assign water draws to each end use were able to successfully assign about 50% of the water draws, but these assigned draws accounted for about 95% of the total hot water use in each home. The amount of hot water deemed as useful ranged from low of 75% at one house to a high of 91% in another. At three of the houses, new water heaters and distribution improvements were implemented during the monitoring period and the impact of these improvements on hot water use and delivery efficiency were evaluated.

  2. Orlando Utilities Commission- Residential Solar Water Heater Rebate Program

    Energy.gov [DOE]

    Through a partnership with the Orlando Federal Credit Union (OFCU), OUC also offers a Residential Solar Loan Program to finance the solar hot water system. Customers who choose to finance through...

  3. Siting Your Solar Water Heating System | Department of Energy

    Energy.gov [DOE] (indexed site)

    and Photovoltaic Modules. North Carolina Solar Center Heat Your Water with the Sun (PDF). U.S. Department of Energy Addthis Related Articles An example of a solar pool...

  4. South River EMC- Solar Water Heating Rebate Program

    Energy.gov [DOE]

    South River Electric Membership Corporation (EMC) is providing rebates to encourage their customers to install solar water heating systems. To be eligible for the rebate solar collectors must have...

  5. The Development of a Roof Integrated Solar Hot Water System

    SciTech Connect

    Menicucci, David F.; Moss, Timothy A.; Palomino, G. Ernest

    2006-09-01

    The Salt River Project (SRP), in conjunction with Sandia National Laboratories (SNL) and Energy Laboratories, Inc. (ELI), collaborated to develop, test, and evaluate an advanced solar water-heating product for new homes. SRP and SNL collaborated under a Department of Energy Cooperative Research and Development Agreement (CRADA), with ELI as SRP's industry partner. The project has resulted in the design and development of the Roof Integrated Thermal Siphon (RITH) system, an innovative product that features complete roof integration, a storage tank in the back of the collector and below the roofline, easy installation by homebuilders, and a low installed cost. SRP's market research guided the design, and the laboratory tests conducted at SNL provided information used to refine the design of field test units and indicated that the RITH concept is viable. ELI provided design and construction expertise and is currently configured to manufacture the units. This final report for the project provides all of the pertinent and available materials connected to the project including market research studies, the design features and development of the system, and the testing and evaluation conducted at SNL and at a model home test site in Phoenix, Arizona.

  6. Purchasing Energy-Efficient Residential Whole-Home Gas Tankless Water

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Heaters | Department of Energy Whole-Home Gas Tankless Water Heaters Purchasing Energy-Efficient Residential Whole-Home Gas Tankless Water Heaters The Federal Energy Management Program (FEMP) provides acquisition guidance for residential whole-home gas tankless water heaters, a product category covered by ENERGY STAR efficiency requirements. Federal laws and requirements mandate that agencies purchase ENERGY STAR-qualified products or FEMP-designated products in all product categories

  7. Energy -- and Water -- Efficiency in the DOE Zero Energy Ready Home Program

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Webinar (Text Version) | Department of Energy -- and Water -- Efficiency in the DOE Zero Energy Ready Home Program Webinar (Text Version) Energy -- and Water -- Efficiency in the DOE Zero Energy Ready Home Program Webinar (Text Version) Below is the text version of the webinar, Energy -- and Water -- Efficiency in the DOE Zero Energy Ready Home Program, presented in October 2014. Watch the presentation. GoToWebinar voice: The broadcast is now starting. All attendees are in listen-only mode.

  8. DOE Zero Energy Ready Home Case Study: Garbett Homes, Herriman, Utah

    SciTech Connect

    none,

    2013-09-01

    As the first net zero-energy production home certified in Utah, this house incorporates two 94% efficient tankless water heaters and two roof-mounted solar panels that preheat the home's water supply. This home won a 2013 Housing Innovation Award in the production builder category.

  9. Heat Transfer Fluids for Solar Water Heating Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Solar Water Heaters » Heat Transfer Fluids for Solar Water Heating Systems Heat Transfer Fluids for Solar Water Heating Systems Illustration of a solar water heater. Illustration of a solar water heater. Heat-transfer fluids carry heat through solar collectors and a heat exchanger to the heat storage tanks in solar water heating systems. When selecting a heat-transfer fluid, you and your solar heating contractor should consider the following criteria: Coefficient of expansion - the fractional

  10. Water Heating Basics | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Water Heating Basics Water Heating Basics August 19, 2013 - 11:15am Addthis A variety of systems are available for water heating in homes and buildings. Learn about: Conventional Storage Water Heaters Demand (Tankless or Instantaneous) Water Heaters Heat Pump Water Heaters Solar Water Heaters Tankless Coil and Indirect Water Heaters Addthis Related Articles Tankless Demand Water Heater Basics Solar Water Heater Basics Heat Pump Water Heater Basics Energy Basics Home Renewable Energy Homes &

  11. Tampa Electric- Solar Rebate Program

    Energy.gov [DOE]

    Tampa Electric provides financial incentives to customers who install solar-energy systems on their homes and businesses. Customers who install eligible solar water heating systems may receive a ...

  12. Water Consumption from Freeze Protection Valves for Solar Water Heating Systems

    SciTech Connect

    Burch, J.; Salasovich, J.

    2005-12-01

    Conference paper regarding research in the use of freeze protection valves for solar domestic water heating systems in cold climates.

  13. Sacramento Ordinance to Waive Fees for Solar Hot Water

    Energy.gov [DOE]

    An ordinance suspending for the calendar years 2007-2009 all fees related to installations of solar water heaters on existing residences.

  14. Low Cost Solar Water Heating R&D

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Template Low Cost Solar Water Heating R&D Kate Hudon National Renewable Energy Laboratory ... This project addresses this barrier by working with an industry research partner to ...

  15. Ocala Utility Services- Solar Hot Water Heating Rebate Program

    Energy.gov [DOE]

    The Solar Water Heater Rebate Program is offered to residential retail electric customers by the City of Ocala Utility Services. Interested customers must complete an application and receive...

  16. Water Impacts of High Solar PV Electricity Penetration

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Water Impacts of High Solar PV Electricity Penetration Jordan Macknick and Stuart Cohen National Renewable Energy Laboratory (NREL) Technical Report NRELTP-6A20-63011 September...

  17. Solar Hot Water Creates Savings for Homeless Shelters

    Energy.gov [DOE]

    The state of Arizona and the House of Refuge Sunnyslope are partnering to install solar hot water systems at five Phoenix-area housing sites for homeless men.

  18. Austin Energy - Solar Water Heating Rebate | Department of Energy

    Energy.gov [DOE] (indexed site)

    Federal Government Multifamily Residential Institutional Savings Category Solar Water Heat Maximum Rebate Rebate: 2,000 Loan: 10,000 for duplex; 5,000 for single family...

  19. Maricopa Assn. of Governments - PV and Solar Domestic Water Heating...

    Energy.gov [DOE] (indexed site)

    June 18, 2003, MAG passed permit submission requirements for residential solar domestic water heating systems. This is in addition to the existing standards for residential and...

  20. Building Codes and Regulations for Solar Water Heating Systems...

    Energy.gov [DOE] (indexed site)

    Photo Credit: iStockphoto Photo Credit: iStockphoto Before installing a solar water heating system, you should investigate local building codes, zoning ordinances, and subdivision...

  1. Duquesne Light Company - Residential Solar Water Heating Program...

    Energy.gov [DOE] (indexed site)

    rebates to its residential customers for purchasing and installing qualifying solar water heating systems. Eligible systems may receive a flat rebate of 286 per qualifying...

  2. A home-made system for IPCE measurement of standard and dye-sensitized solar cells

    SciTech Connect

    Palma, Giuseppina; Cozzarini, Luca; Capria, Ennio; Fraleoni-Morgera, Alessandro E-mail: afraleoni@units.it

    2015-01-15

    A home-made system for incident photon-to-electron conversion efficiency (IPCE) characterization, based on a double-beam UV-Vis spectrophotometer, has been set up. In addition to its low cost (compared to the commercially available apparatuses), the double-beam configuration gives the advantage to measure, autonomously and with no need for supplementary equipment, the lamp power in real time, compensating possible variations of the spectral emission intensity and quality, thus reducing measurement times. To manage the optical and electronic components of the system, a custom software has been developed. Validations carried out on a common silicon-based photodiode and on a dye-sensitized solar cell confirm the possibility to adopt this system for determining the IPCE of solar cells, including dye-sensitized ones.

  3. Air-To-Water Heat Pumps with Radiant Delivery in Low Load Homes...

    Energy Saver

    Air-to-Water Heat Pumps With Radiant Delivery in Low Load Homes Tucson, Arizona and Chico, California PROJECT INFORMATION Project Name: Field testing of air-to-water heat pump ...

  4. Comparative performance indices for solar batch water heaters

    SciTech Connect

    Stickney, B.L.; Aaboe, E.H.

    1981-01-01

    A simple method is developed to allow direct comparison of various solar batch water heaters. Certain system variables must be determined by calculation or measurement which may vary with season. These include Thermal Efficiency of Collection, Tank R value, Collector Surface to Tank Volume Ratio, Clear Day Collection Period in Hours, System Cost, and Installed Solar Heatings Fraction (optional). These variables are used to compute any one of four performance indices. This method allows a valid comparison not only between various solar batch water heaters but between other types of solar water heaters as well. This system may be used by consumers or designers to choose the most cost and performance effective options.

  5. Marshall Municipal Utilities- Solar Thermal Water Heater Rebate Program

    Energy.gov [DOE]

    To invest in a renewable resource, consider an ENERGY STAR Solar Thermal Water Heater and use free energy from the sun to heat your water. Marshall Municipal Utilities (MMU) offers rebates of $20...

  6. Build-it-yourself solar water heater: reduce electric use

    SciTech Connect

    Not Available

    1982-01-01

    Drawings and instructions for a simple breadbox-style solar water heater are presented. This booklet is a step-by-step guide to building a solar water heater for approximately 15 percent of the cost of most commercially-installed systems. This system does not provide as much energy as the commercially available systems. (MHR)

  7. Home and Building Technology Basics | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Home and Building Technology Basics Home and Building Technology Basics Homes and other buildings use energy every day for space heating and cooling, for lighting and hot water, and for appliances and electronics. Today's buildings consume more energy than any other sector of the U.S. economy, including transportation and industry. Learn more about: Heating and Cooling Passive Solar Design Water Heating Lighting and Daylighting Energy Basics Home Renewable Energy Homes & Buildings Lighting

  8. Estimating the Cost and Energy Efficiency of a Solar Water Heater |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy the Cost and Energy Efficiency of a Solar Water Heater Estimating the Cost and Energy Efficiency of a Solar Water Heater Solar water heaters are more efficient the gas or electric heaters. | Chart credit ENERGY STAR Solar water heaters are more efficient the gas or electric heaters. | Chart credit ENERGY STAR Solar water heating systems usually cost more to purchase and install than conventional water heating systems. However, a solar water heater can usually save you

  9. Building America Top Innovations Hall of Fame Profile … Community Scale High-Performance with Solar: Pulte Homes, Tucson, AZ

    Energy Saver

    Homes' Civano project in Tucson, Arizona, is one of the few communities in the United States to integrate passive and active solar with a comprehensive building science strategy. Many builders remain resistant to adopting high-performance innovations based on misconceptions about high cost and design challenges. Thus, Building America projects such as Pulte Homes' Civano project in Tucson, Arizona, have an extraordinary impact, demonstrating the business case for adopting proven

  10. DOE Zero Energy Ready Home Case Study: KB Home, San Marcos, CA, Production Home

    Energy.gov [DOE]

    Case study of a DOE Zero Energy Ready Home in San Marcos, CA that scored HERS 52 without PV, -4 with PV. This 52,778-square-foot production home has R-20 advanced framed walls with batts plus rigid foam sheathing, an air-source heat pump for central air in sealed attic, solar water heating and 100% LED lighting.

  11. Solar and nuclear energy expertise to be enhanced by research centers

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Heat & Cool » Water Heating » Solar Water Heaters Solar Water Heaters Solar panels heat water that is delivered to a storage tank.| Photo courtesy of David Springer, National Renewable Energy Laboratory Solar panels heat water that is delivered to a storage tank.| Photo courtesy of David Springer, National Renewable Energy Laboratory Solar water heaters -- also called solar domestic hot water systems -- can be a cost-effective way to generate hot water for your home. They can be used in

  12. Addressing the Water and Energy Nexus

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Water and Energy Nexus - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us ... Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 ...

  13. DOE Wind and Water Power Technologies Office

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind and Water Power Technologies Office - Sandia Energy Energy Search Icon Sandia Home ... Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ...

  14. decreasing water input and waste generation

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    decreasing water input and waste generation - Sandia Energy Energy Search Icon Sandia Home ... Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 ...

  15. Electric Power Generation and Water Use Data

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Power Generation and Water Use Data - Sandia Energy Energy Search Icon Sandia Home ... Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 ...

  16. Estimating the Cost and Energy Efficiency of a Solar Water Heater...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Estimating the Cost and Energy Efficiency of a Solar Water Heater Estimating the Cost and Energy Efficiency of a Solar Water Heater March 2, 2015 - 3:09pm Addthis Solar water...

  17. Solar Energy Basics | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Energy Basics Solar is the Latin word for sun-a powerful source of energy that can be used to heat, cool, and light our homes and businesses. That's because more energy from the sun falls on the earth in one hour than is used by everyone in the world in one year. A variety of technologies convert sunlight to usable energy for buildings. The most commonly used solar technologies for homes and businesses are solar water heating, passive solar design for space heating and cooling, and solar

  18. Sandia Energy - Solar Resource Assessment

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Resource Assessment Home Stationary Power Energy Conversion Efficiency Solar Energy Photovoltaics Solar Resource Assessment Solar Resource AssessmentTara...

  19. Sandia Energy - Solar Market Transformation

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Market Transformation Home Stationary Power Energy Conversion Efficiency Solar Energy Photovoltaics Solar Market Transformation Solar Market TransformationTara...

  20. Development of a Long-Life-Cycle, Highly Water-Resistant Solar...

    Office of Scientific and Technical Information (OSTI)

    Highly Water-Resistant Solar Reflective Retrofit Roof Coating Citation Details In-Document Search Title: Development of a Long-Life-Cycle, Highly Water-Resistant Solar ...

  1. Estimating the Cost and Energy Efficiency of a Solar Water Heater...

    Energy.gov [DOE] (indexed site)

    Solar water heaters are more efficient the gas or electric heaters. | Chart credit ENERGY STAR Solar water heaters are more efficient the gas or electric heaters. | Chart credit...

  2. Low Cost Solar Water Heating R&D | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Low Cost Solar Water Heating R&D Low Cost Solar Water Heating R&D Emerging Technologies Project for the 2013 Building Technologies Office's Program Peer Review ...

  3. Secretaries Chu and Donovan to Host Conference Call on Home Owners...

    Office of Environmental Management (EM)

    Donovan to Host Conference Call on Home Owners Energy-Saving Improvements Program ... doors and windows, HVAC systems, water heaters, solar panels, and geothermal systems. ...

  4. Evaluation of a High-Performance Solar Home in Loveland, Colorado

    SciTech Connect

    Hendron, R.; Eastment, M.; Hancock, E.; Barker, G.; Reeves, P.

    2006-01-01

    Building America (BA) partner McStain Neighborhoods built the Discovery House in Loveland, Colorado, with an extensive package of energy-efficient features, including a high-performance envelope, efficient mechanical systems, a solar water heater integrated with the space-heating system, a heat-recovery ventilator (HRV), and ENERGY STAR? appliances. The National Renewable Energy Laboratory (NREL) and Building Science Consortium (BSC) conducted short-term field-testing and building energy simulations to evaluate the performance of the house. These evaluations are utilized by BA to improve future prototype designs and to identify critical research needs. The Discovery House building envelope and ducts were very tight under normal operating conditions. The HRV provided fresh air at a rate of about 75 cfm (35 l/s), consistent with the recommendations of ASHRAE Standard 62.2. The solar hot water system is expected to meet the bulk of the domestic hot water (DHW) load (>83%), but only about 12% of the space-heating load. DOE-2.2 simulations predict whole-house source energy savings of 54% compared to the BA Benchmark [1]. The largest contributors to energy savings beyond McStain's standard practice are the solar water heater, HRV, improved air distribution, high-efficiency boiler, and compact fluorescent lighting package.

  5. Evaluation of a High-Performance Solar Home in Loveland, Colorado: Preprint

    SciTech Connect

    Hendron, R.; Eastment, M.; Hancock, E.; Barker, G.; Reeves, P.

    2006-08-01

    Building America (BA) partner McStain Neighborhoods built the Discovery House in Loveland, Colorado, with an extensive package of energy-efficient features, including a high-performance envelope, efficient mechanical systems, a solar water heater integrated with the space-heating system, a heat-recovery ventilator (HRV), and ENERGY STAR appliances. The National Renewable Energy Laboratory (NREL) and Building Science Consortium (BSC) conducted short-term field-testing and building energy simulations to evaluate the performance of the house. These evaluations are utilized by BA to improve future prototype designs and to identify critical research needs. The Discovery House building envelope and ducts were very tight under normal operating conditions. The HRV provided fresh air at a rate of about 35 l/s (75 cfm), consistent with the recommendations of ASHRAE Standard 62.2. The solar hot water system is expected to meet the bulk of the domestic hot water (DHW) load (>83%), but only about 12% of the space-heating load. DOE-2.2 simulations predict whole-house source energy savings of 54% compared to the BA Benchmark. The largest contributors to energy savings beyond McStain's standard practice are the solar water heater, HRV, improved air distribution, high-efficiency boiler, and compact fluorescent lighting package.

  6. Hodges residence: performance of a direct gain passive solar home in Iowa

    SciTech Connect

    Hodges, L.

    1980-01-01

    Results are presented for the performance of the Hodges residence, a 2200-square-foot earth-sheltered direct gain passive solar home in Ames, Iowa, during the 1979-80 heating season, its first occupied season. No night insulation was used on its 500 square feet of double-pane glass. Total auxiliary heat required was 43 GJ (41 MBtu) gross and 26 GJ (25 MBtu) net, amounting, respectively, to 60 and 36 kJ/C/sup 0/-day-m/sup 2/ (2.9 and 1.8 Btu/F/sup 0/-day-ft/sup 2/). The heating season was unusually cloudy and included the cloudiest January in the 21 years of Ames insolation measurements. Results are also presented for the performance of the hollowcore floor which serves as the main storage mass and for the comfort range in the house.

  7. Hodges residence: performance of a direct gain passive solar home in Iowa

    SciTech Connect

    Hodges, L.

    1980-01-01

    Results are presented for the performance of the Hodges Residence, a 2200-square-foot earth-sheltered direct gain passive solar home in Ames, Iowa, during the 1979-80 heating season, its first occupied season. No night insulation was used on its 500 square feet of double-pane glass. Total auxiliary heat required was 43 GJ (41 MBTU) gross and 26 GJ (25 MBTU) net, amounting, respectively, to 60 and 36 kJ/C/sup 0/-day-m/sup 2/ (2.9 and 1.8 BTU/F/sup 0/-day-ft/sup 2/). The heating season was unusually cloudy and included the cloudiest January in the 21 years of Ames insolation measurements. Results are also presented for the performance of the hollow-core floor which serves as the main storage mass and for the comfort range in the house.

  8. Water Impacts of High Solar PV Electricity Penetration

    SciTech Connect

    Macknick, Jordan; Cohen, Stuart

    2015-09-01

    This analysis provides a detailed national and regional description of the water-related impacts and constraints of high solar electricity penetration scenarios in the U.S. in 2030 and 2050. A modified version of the Regional Energy Deployment System (ReEDS) model that incorporates water resource availability and costs as a constraint in each of its 134 Balancing Area (BA) regions was utilized to explore national and regional differences in water use impacts and solar deployment locations under different solar energy cost and water availability scenarios (Macknick et al. 2015). Water resource availability and cost data are from recently completed research at Sandia National Laboratories (Tidwell et al. 2013a). Scenarios analyzed include two business-as-usual solar energy cost cases, one with and one without considering available water resources, and four solar energy cost cases that meet the SunShot cost goals (i.e., $1/watt for utility-scale PV systems), with varying levels of water availability restrictions. This analysis provides insight into the role solar energy technologies have in the broader electricity sector under scenarios of water constraints.

  9. Outdoor Outfitter Gets Greener With Solar Water Heater

    Energy.gov [DOE]

    Using Recovery Act funding, L.L. Bean, the popular outdoor apparel company, recently installed a 180-tube solar hot water collector array on the roof of their flagship store in Freeport, Maine. Find out some how much energy and money they're saving thanks to the new solar installation.

  10. DOE Zero Energy Ready Home Case Study 2014: Durable Energy Builders...

    Energy Saver

    three USGBC open house events, a solar home tour, a city-wide home tour, a green ... family safe, healthy, and dry, with power and water, regardless of whatever storms ...

  11. Builders Challenge High Performance Builder Spotlight - Palm Harbor Homes - Bimini II, Plant City, FL

    SciTech Connect

    2008-05-01

    Building America/Builders Challenge fact sheet on Palm Harbor Homes, an energy-efficient home builder in hot-humid climate using solar hot water, spray foam insulation, and SEER14 HVAC.

  12. City Water Light and Power- Solar Rewards Program

    Energy.gov [DOE]

    City Water, Light and Power  (CWLP) is offering residential and commercial customers a $500 per kilowatt (kW) rebate for installing solar photovoltaic (PV) systems with a maximum rebate of up to $2...

  13. Pasadena Water and Power- Solar Power Installation Rebate

    Energy.gov [DOE]

    Pasadena Water & Power (PWP) offers its electric customers a rebate for photovoltaic (PV) installations, with a goal of helping to fund the installation of 14 megawatts (MW) of solar power by...

  14. Minnesota Power- Solar-Thermal Water Heating Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Minnesota Power offers a 25% rebate for qualifying solar thermal water heating systems. The maximum award for single-family customers is $2,000 per customer; $4,000 for 2-3 family unit buildings;...

  15. GreyStone Power- Solar Water Heating Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    GreyStone Power, an electricity cooperative serving 103,000 customers in Georgia, introduced a solar water heating rebate in March 2009. This $500 rebate is available to customers regardless of...

  16. Solar

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas ...

  17. Sandia Team Attends World Water Week in Stockholm

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Team Attends World Water Week in Stockholm - Sandia Energy Energy Search Icon Sandia Home ... Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 ...

  18. NREL and Industry Advance Low-Cost Solar Water Heating R&D (Fact Sheet)

    SciTech Connect

    Not Available

    2014-08-01

    NREL and Rhotech develop cost-effective solar water heating prototype to rival natural gas water heater market.

  19. Using Solar Hot Water to Address Piping Heat Losses in Multifamily...

    Office of Scientific and Technical Information (OSTI)

    Subject: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION residential; Residential Buildings; ARBI; Building America; TRNSYS; multifamily; domestic hot water; solar water ...

  20. DOE Zero Energy Ready Home: Near Zero Maine Home II, Vassalboro, Maine

    Energy.gov [DOE]

    Case study describing a single-story, 1,200-sq. ft. home in Maine with double shell walls, triple-pane windows, ductless heat pump, solar hot water, HERS 35 eithout PV, HERS 11 with PV

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

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    home has R-20 advanced framed walls with batts plus rigid foam sheathing, an air-source heat pump for central air in sealed attic, solar water heating and 100% LED lighting. ...

  2. DOE Zero Energy Ready Home Case Study 2013: Mandalay Homes, Phoenix...

    Energy Saver

    ... On the Gordon Estates homes, Mandalay installed a unique solar system that provides water ... The underside of the roof is covered with 5.5 inches (R-20) of closed- cell spray foam, ...

  3. New Whole-House Solutions Case Study: Ravenwood Homes and Energy Smart Home Plans, Inc., Cape Coral, Florida

    SciTech Connect

    none,

    2012-10-01

    PNNL, Florida HERO, and Energy Smart Home Plans helped Ravenwood Homes achieve a HERS 15 with PV or HERS 65 without PV on a home in Florida with SEER 16 AC, concrete block and rigid foam walls, high-performance windows, solar water heating, and 5.98 kW PV.

  4. Seawater as salt and water source for solar ponds

    SciTech Connect

    Folchitto, S. )

    1991-01-01

    This paper presents a method for preliminary design of a 1 km{sup 2} solar pond that will be supplied with salt and water from the sea. The evaporating basins, needed to concentrate the seawater are also included in the project. Starting from the experience that Agip Petroli gained in running the 25,000 m{sup 2} Solar Pond, built inside a salt-work in Margherita di Savoia, in southern Italy, two projects were worked out: the first one of 25,000 m{sup 2} and the second one of 1 km{sup 2} of surface. Making comparison between harvested energy cost of the solar pond, and the energy cost of alternative and traditional energy sources, the coastal Solar Pond of 1 km{sup 2} that utilizes seawater as salt and water source, is competitive.

  5. Mountain Association for Community Economic Development- Solar Water Heater Loan Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Kentucky Solar Partnership (KSP) and the Mountain Association for Community Economic Development (MACED) partner to offer low interest loans for the installation of solar water heaters. Loans...

  6. Solar Water Heaters | Department of Energy

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The batch collector is a large box holding a tank and covered with a glaze that faces the sun. Water is heated in this tank, and another pipe takes the heated water from the batch...

  7. EWEB- Residential Solar Water Heating Loan Program

    Energy.gov [DOE]

    Eugene Water & Electric Board (EWEB) offers residential customers a loan and cash discount program called, "The Bright Way To Heat Water." The program is designed to promote the installation of...

  8. Powering a Home with Just 25 Watts of Solar PV. Super-Efficient Appliances Can Enable Expanded Off-Grid Energy Service Using Small Solar Power Systems

    SciTech Connect

    Phadke, Amol A.; Jacobson, Arne; Park, Won Young; Lee, Ga Rick; Alstone, Peter; Khare, Amit

    2015-04-01

    Highly efficient direct current (DC) appliances have the potential to dramatically increase the affordability of off-grid solar power systems used for rural electrification in developing countries by reducing the size of the systems required. For example, the combined power requirement of a highly efficient color TV, four DC light emitting diode (LED) lamps, a mobile phone charger, and a radio is approximately 18 watts and can be supported by a small solar power system (at 27 watts peak, Wp). Price declines and efficiency advances in LED technology are already enabling rapidly increased use of small off-grid lighting systems in Africa and Asia. Similar progress is also possible for larger household-scale solar home systems that power appliances such as lights, TVs, fans, radios, and mobile phones. When super-efficient appliances are used, the total cost of solar home systems and their associated appliances can be reduced by as much as 50%. The results vary according to the appliances used with the system. These findings have critical relevance for efforts to provide modern energy services to the 1.2 billion people worldwide without access to the electrical grid and one billion more with unreliable access. However, policy and market support are needed to realize rapid adoption of super-efficient appliances.

  9. THE PHASES OF WATER ICE IN THE SOLAR NEBULA

    SciTech Connect

    Ciesla, Fred J.

    2014-03-20

    Understanding the phases of water ice that were present in the solar nebula has implications for understanding cometary and planetary compositions as well as the internal evolution of these bodies. Here we show that amorphous ice formed more readily than previously recognized, with formation at temperatures <70K being possible under protoplanetary disk conditions. We further argue that photodesorption and freeze-out of water molecules near the surface layers of the solar nebula would have provided the conditions needed for amorphous ice to form. This processing would be a natural consequence of ice dynamics and would allow for the trapping of noble gases and other volatiles in water ice in the outer solar nebula.

  10. NREL and Industry Advance Low-Cost Solar Water Heating R&D (Fact...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    NREL and Rhotech develop cost-effective solar water heating prototype to rival natural gas water heaters. Water heating energy use represents the second largest energy demand for ...

  11. DOE Tour of Zero: 19th Avenue by TC Legend Homes | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    19th Avenue by TC Legend Homes DOE Tour of Zero: 19th Avenue by TC Legend Homes 1 of 8 TC Legend Homes built this 2,463-square-foot home in Seattle, Washington, to the performance criteria of the DOE Zero Energy Ready Home (ZERH) program. 2 of 8 The home's high-performance SIP walls and roof combined with advanced HVAC and a 9.5-kW solar electric generating system plus solar water heating to provide the homeowner with nearly $1,900 in annual energy cost savings compared to a similar-sized home

  12. DOE Tour of Zero: 22nd Avenue by TC Legend Homes | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    22nd Avenue by TC Legend Homes DOE Tour of Zero: 22nd Avenue by TC Legend Homes Addthis 1 of 5 TC Legend Homes built this 4,472-square-foot home in Seattle, Washington, to the performance criteria of the U.S. Department of Energy Zero Energy Ready Home (ZERH) program. 2 of 5 The 22nd Avenue home is on the north edge of a narrow, sloped urban infill lot, allowing for maximum solar exposure on the south side of the home if the homeowner chooses to install solar electric panels. For increased water

  13. Low-Cost Solar Water Heating Research and Development Roadmap

    SciTech Connect

    Hudon, K.; Merrigan, T.; Burch, J.; Maguire, J.

    2012-08-01

    The market environment for solar water heating technology has changed substantially with the successful introduction of heat pump water heaters (HPWHs). The addition of this energy-efficient technology to the market increases direct competition with solar water heaters (SWHs) for available energy savings. It is therefore essential to understand which segment of the market is best suited for HPWHs and focus the development of innovative, low-cost SWHs in the market segment where the largest opportunities exist. To evaluate cost and performance tradeoffs between high performance hot water heating systems, annual energy simulations were run using the program, TRNSYS, and analysis was performed to compare the energy savings associated with HPWH and SWH technologies to conventional methods of water heating.

  14. Solar Water Heaters and the Economy

    Energy.gov [DOE]

    One Coloradan examines the costs and benefits of passive versus conventional water heating systems - and it's effects on property value in the long-term.

  15. Study Design And Realization Of Solar Water Heater

    SciTech Connect

    Lounis, M.; Boudjemaa, F.; Akil, S. Kouider

    2011-01-17

    Solar is one of the most easily exploitable energy, it is moreover inexhaustible. His applications are many and are varied. The heating of the domestic water is one of the most immediate, simplest and also of most widespread exploitation of the solar energy. Algeria, from its geographical situation, it deposits one of the largest high sun surface expositions in the world. The exposition duration of the almost territory exceeds 2000 hours annually and can reach the 3900 hours (high plateaus and Sahara). By knowing the daily energy received by 1 m{sup 2} of a horizontal surface of the solar thermal panel is nearly around 1700 KWh/m{sup 2} a year in the north and 2263 KWh/m{sup 2} a year in the south of the country, we release the most important and strategic place of the solar technologies in the present and in the future for Algeria. This work consists to study, conceive and manufacture solar water heating with the available local materials so, this type of the energy will be profitable for all, particularly the poor countries. If we consider the illumination duration of the panel around 6 hours a day, the water heat panel manufactured in our laboratory produce an equivalent energy of 11.615 KWh a day so, 4239 KWh a year. These values of energy can be easily increased with performing the panel manufacture.

  16. Salem Electric- Solar Water Heater Rebate

    Energy.gov [DOE]

    Salem Electric residential customers with electric water heating are eligible for a $600 rebate through Salem's Bright Way program. A program brochure with details is available on the program...

  17. Federal technology alert. Parabolic-trough solar water heating

    SciTech Connect

    1998-04-01

    Parabolic-trough solar water heating is a well-proven renewable energy technology with considerable potential for application at Federal facilities. For the US, parabolic-trough water-heating systems are most cost effective in the Southwest where direct solar radiation is high. Jails, hospitals, barracks, and other facilities that consistently use large volumes of hot water are particularly good candidates, as are facilities with central plants for district heating. As with any renewable energy or energy efficiency technology requiring significant initial capital investment, the primary condition that will make a parabolic-trough system economically viable is if it is replacing expensive conventional water heating. In combination with absorption cooling systems, parabolic-trough collectors can also be used for air-conditioning. Industrial Solar Technology (IST) of Golden, Colorado, is the sole current manufacturer of parabolic-trough solar water heating systems. IST has an Indefinite Delivery/Indefinite Quantity (IDIQ) contract with the Federal Energy Management Program (FEMP) of the US Department of Energy (DOE) to finance and install parabolic-trough solar water heating on an Energy Savings Performance Contract (ESPC) basis for any Federal facility that requests it and for which it proves viable. For an ESPC project, the facility does not pay for design, capital equipment, or installation. Instead, it pays only for guaranteed energy savings. Preparing and implementing delivery or task orders against the IDIQ is much simpler than the standard procurement process. This Federal Technology Alert (FTA) of the New Technology Demonstration Program is one of a series of guides to renewable energy and new energy-efficient technologies.

  18. A Realistic Hot Water Draw Specification for Rating Solar Water Heaters

    SciTech Connect

    Burch, J.

    2012-06-01

    In the United States, annual performance ratings for solar water heaters are simulated, using TMY weather and specified water draw. This paper proposes a more realistic ratings draw that eliminates most bias by improving mains inlet temperature and by specifying realistic hot water use. Presented at the 2012 World Renewable Energy Forum; Denver, Colorado; May 13-17, 2012.

  19. Simple solar water heating systems: The SWAP program in Florida

    SciTech Connect

    Harrison, J.

    1997-11-01

    This article describes the development of a solar water heating system appropriate for low-income Florida residents and the appliances developed in conjunction with it that may appeal to a wider market. Among the topics discussed are size and design of the system including passive preheaters and affordable active systems. Electric water heaters with 40 and 50 gallon capacity were found to be the most cost effective. The feed-back from customers is also discussed. 3 figs.

  20. Covered Product Category: Residential Whole-Home Gas Tankless Water Heaters

    Energy.gov [DOE]

    FEMP provides acquisition guidance across a variety of product categories, including whole-home gas tankless water heaters, 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.

  1. University of Maryland Solar Decathlon Team Celebrates with a "Shed Raising"

    Energy.gov [DOE]

    The University of Maryland 2011 Solar Decathlon Team is using one element -- water -- as a major component of their home. Here's how.

  2. An overview of water disinfection in developing countries and the potential for solar thermal water pasteurization

    SciTech Connect

    Burch, J.; Thomas, K.E.

    1998-01-01

    This study originated within the Solar Buildings Program at the U.S. Department of Energy. Its goal is to assess the potential for solar thermal water disinfection in developing countries. In order to assess solar thermal potential, the alternatives must be clearly understood and compared. The objectives of the study are to: (a) characterize the developing world disinfection needs and market; (b) identify competing technologies, both traditional and emerging; (c) analyze and characterize solar thermal pasteurization; (d) compare technologies on cost-effectiveness and appropriateness; and (e) identify research opportunities. Natural consequences of the study beyond these objectives include a broad knowledge of water disinfection problems and technologies, introduction of solar thermal pasteurization technologies to a broad audience, and general identification of disinfection opportunities for renewable technologies.

  3. Mexico-GTZ Support for the Programme to Promote Solar Water Heating...

    OpenEI (Open Energy Information) [EERE & EIA]

    Support for the Programme to Promote Solar Water Heating Jump to: navigation, search Logo: Mexico-GTZ Support for the Programme to Promote Solar Water Heating Name Mexico-GTZ...

  4. NEST HOME

    Energy.gov [DOE]

    The Missouri University of Science and Technology returns for its sixth Solar Decathlon with its team’s 2015 entry, the Nest Home, designed to serve a family “from a full nest to an empty nest.”

  5. Nationwide: Slashing Red Tape To Speed Solar Deployment for Homes and Businesses

    Energy.gov [DOE]

    Rooftop Solar Challenge helped cut permitting time by 40 percent and reduce fees by over 10 percent, opening the door to make it faster and easier for more than 47 million Americans to install solar.

  6. Do You Wonder How Much Energy Your Home Could Get from Solar or Wind?

    Energy.gov [DOE]

    Have you ever thought about installing wind or solar energy on your property? Learn more about it in this post.

  7. Modeling and Test-and-Rate Methods for Innovative Thermosiphon Solar Water Heaters: Preprint

    SciTech Connect

    Burch, J.; Shoukas, G.; Brandemuhl, M.; Krarti, M.

    2006-05-01

    Conference paper regarding research in modeling and test-and-rate methods for thermosiphon solar domestic water heaters.

  8. Enabling unassisted solar water splitting by iron oxide and silicon

    SciTech Connect

    Jang, Ji-Wook; Du, Chun; Ye, Yifan; Lin, Yongjing; Yao, Xiahui; Thorne, James; Liu, Erik; McMahon, Gregory; Zhu, Junfa; Javey, Ali; Guo, Jinghua; Wang, Dunwei

    2015-06-16

    A solution for large-scale solar energy storage is photoelectrochemical (PEC) water splitting. However, its development has been impeded by the poor performance of photoanodes, particularly in their capability for photovoltage generation. Many examples employing photovoltaic modules to correct the deficiency for unassisted solar water splitting have been reported to-date. We show that, by using the prototypical photoanode material of haematite as a study tool, structural disorders on or near the surfaces are important causes of the low photovoltages. We develop a facile re-growth strategy to reduce surface disorders and as a consequence, a turn-on voltage of 0.45 V (versus reversible hydrogen electrode) is achieved. In conclusion, this result permits us to construct a photoelectrochemical device with a haematite photoanode and Si photocathode to split water at an overall efficiency of 0.91%, with NiFeOx and TiO2/Pt overlayers, respectively.

  9. Enabling unassisted solar water splitting by iron oxide and silicon

    DOE PAGES [OSTI]

    Jang, Ji-Wook; Du, Chun; Ye, Yifan; Lin, Yongjing; Yao, Xiahui; Thorne, James; Liu, Erik; McMahon, Gregory; Zhu, Junfa; Javey, Ali; et al

    2015-06-16

    A solution for large-scale solar energy storage is photoelectrochemical (PEC) water splitting. However, its development has been impeded by the poor performance of photoanodes, particularly in their capability for photovoltage generation. Many examples employing photovoltaic modules to correct the deficiency for unassisted solar water splitting have been reported to-date. We show that, by using the prototypical photoanode material of haematite as a study tool, structural disorders on or near the surfaces are important causes of the low photovoltages. We develop a facile re-growth strategy to reduce surface disorders and as a consequence, a turn-on voltage of 0.45 V (versus reversiblemore » hydrogen electrode) is achieved. In conclusion, this result permits us to construct a photoelectrochemical device with a haematite photoanode and Si photocathode to split water at an overall efficiency of 0.91%, with NiFeOx and TiO2/Pt overlayers, respectively.« less

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

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    HERS 53 without PV, HERS 23 with PV. This 1,143-square-foot affordable home has R-23 ICF walls, a spray-foamed sealed attic, solar hot water, and a ducted mini-split heat pump. ...

  11. Air-to-Water Heat Pumps With Radiant Delivery in Low-Load Homes

    SciTech Connect

    Backman, C.; German, A.; Dakin, B.; Springer, D.

    2013-12-01

    Space conditioning represents nearly 50% of average residential household energy consumption, highlighting the need to identify alternative cost-effective, energy-efficient cooling and heating strategies. As homes are better built, there is an increasing need for strategies that are particularly well suited for high performance, low load homes. ARBI researchers worked with two test homes in hot-dry climates to evaluate the in-situ performance of air-to-water heat pump systems, an energy efficient space conditioning solution designed to cost-effectively provide comfort in homes with efficient, safe, and durable operation. Two monitoring projects of test houses in hot-dry climates were initiated in 2010 to test this system. Both systems were fully instrumented and have been monitored over one year to capture complete performance data over the cooling and heating seasons. Results are used to quantify energy savings, cost-effectiveness, and system performance using different operating modes and strategies. A calibrated TRNSYS model was developed and used to evaluate performance in various climate regions. This strategy is most effective in tight, insulated homes with high levels of thermal mass (i.e. exposed slab floors).

  12. Air-to-Water Heat Pumps With Radiant Delivery in Low-Load Homes

    SciTech Connect

    Backman, C.; German, A.; Dakin, B.; Springer, D.

    2013-12-01

    Space conditioning represents nearly 50% of average residential household energy consumption, highlighting the need to identify alternative cost-effective, energy-efficient cooling and heating strategies. As homes are better built, there is an increasing need for strategies that are particularly well suited for high performance, low load homes. ARBI researchers worked with two test homes in hot-dry climates to evaluate the in-situ performance of air-to-water heat pump (AWHP) systems, an energy efficient space conditioning solution designed to cost-effectively provide comfort in homes with efficient, safe, and durable operation. Two monitoring projects of test houses in hot-dry climates were initiated in 2010 to test this system. Both systems were fully instrumented and have been monitored over one year to capture complete performance data over the cooling and heating seasons. Results are used to quantify energy savings, cost-effectiveness, and system performance using different operating modes and strategies. A calibrated TRNSYS model was developed and used to evaluate performance in various climate regions. This strategy is most effective in tight, insulated homes with high levels of thermal mass (i.e. exposed slab floors).

  13. Using Solar Hot Water to Address Piping Heat Losses in Multifamily...

    Office of Scientific and Technical Information (OSTI)

    Subject: residential; Residential Buildings; ARBI; Building America; TRNSYS; multifamily; domestic hot water; solar water heater; recirculation Word Cloud More Like This Full Text ...

  14. Solar Water Heater Roadmap Leads Path to Market Expansion (Fact Sheet)

    SciTech Connect

    Not Available

    2012-09-01

    Innovative strategy to reduce installed cost of solar water heater systems can rival conventional natural gas water heaters in the marketplace.

  15. DOE Tour of Zero: 19th Avenue by TC Legend Homes | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    19th Avenue by TC Legend Homes DOE Tour of Zero: 19th Avenue by TC Legend Homes Addthis 1 of 8 TC Legend Homes built this 2,463-square-foot home in Seattle, Washington, to the performance criteria of the DOE Zero Energy Ready Home (ZERH) program. 2 of 8 The home's high-performance SIP walls and roof combined with advanced HVAC and a 9.5-kW solar electric generating system plus solar water heating to provide the homeowner with nearly $1,900 in annual energy cost savings compared to a

  16. A Consumer's Guide: Heat Your Water with the Sun (Brochure)

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... much of your home's water and interior space. Their popularity is increasing, for several reasons. Solar heating systems are reliable, adaptable, and pollution-free because they ...

  17. DOE Tour of Zero: The Solar Residence by e2 Homes | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    their lower surface from below, for up to 30% greater power production. All wiring is hidden within the canopy's aluminum support beams. 6 of 12 The home's porch roof consists of...

  18. July 17 ESTAP Webinar: Resilient Solar-Storage Systems for Homes...

    Energy.gov [DOE] (indexed site)

    Online registration is available. Addthis Related Articles August 22 ESTAP Webinar: A Solar Storage Microgrid for the Energy City of the Future May 20 ESTAP Webinar: Commissioning ...

  19. Towards a Design of a Complete Solar Water Splitting System

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Towards a Design of a Complete Solar Water Splitting System 1 Feb 2013 BISfuel© : A team of Bisfuel researchers led by Devens Gust, Ana Moore and Tom Moore has designed and characterized an artificial photosynthetic reaction center inspired by natural Photosystem II and comprising a highly oxidizing porphyrin linked to a biomimetic electron transfer relay and a porphyrin electron acceptor. Two articles with the results of the study have appeared in September special issue of PNAS "Chemical

  20. DOE Zero Energy Ready Home Case Study: TC Legend Homes, Seattle, Washington

    SciTech Connect

    none,

    2013-09-01

    This house incorporates slab-on-grade, EPS roof, and radiant heating with an air-to-water heat pump that also preheats domestic hot water. Without counting in the solar panels, the home earns a home energy rating system (HERS) score of 37, with projected utility bills of about $740 a year. With the 6.4-kW photovoltaic power system installed on the roof, the home’s HERS scores drops to -1 and utility bills for the all-electric home drop to zero. This home was awarded a 2013 Housing Innovation Award in the affordable builder category.

  1. Solar Water Heating with Low-Cost Plastic Systems

    SciTech Connect

    2012-01-01

    Federal buildings consumed over 392,000 billion Btu of site delivered energy for buildings during FY 2007 at a total cost of $6.5 billion. Earlier data indicate that about 10% of this is used to heat water.[2] Targeting energy consumption in Federal buildings, the Energy Independence and Security Act of 2007 (EISA) requires new Federal buildings and major renovations to meet 30% of their hot water demand with solar energy, provided it is cost-effective over the life of the system. In October 2009, President Obama expanded the energy reduction and performance requirements of EISA and its subsequent regulations with his Executive Order 13514.

  2. Managing the Drivers of Air Flow and Water Vapor Transport in Existing Single Family Homes (Revised)

    SciTech Connect

    Cummings, J.; Withers, C.; Martin, E.; Moyer, N.

    2012-10-01

    This document focuses on managing the driving forces which move air and moisture across the building envelope. While other previously published Measure Guidelines focus on elimination of air pathways, the ultimate goal of this Measure Guideline is to manage drivers which cause air flow and water vapor transport across the building envelope (and also within the home), control air infiltration, keep relative humidity (RH) within acceptable limits, avoid combustion safety problems, improve occupant comfort, and reduce house energy use.

  3. Managing the Drivers of Air Flow and Water Vapor Transport in Existing Single-Family Homes

    SciTech Connect

    Cummings, James; Withers, Charles; Martin, Eric; Moyer, Neil

    2012-10-01

    This report is a revision of an earlier report titled: Measure Guideline: Managing the Drivers of Air Flow and Water Vapor Transport in Existing Single-Family Homes. Revisions include: Information in the text box on page 1 was revised to reflect the most accurate information regarding classifications as referenced in the 2012 International Residential Code. “Measure Guideline” was dropped from the title of the report. An addition was made to the reference list.

  4. Purchasing Energy-Efficient Residential Whole-Home Gas Tankless Water Heaters

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Federal Energy Management Program (FEMP) provides acquisition guidance for residential whole-home gas tankless water heaters, a product category covered by ENERGY STAR efficiency requirements. Federal laws and requirements mandate that agencies purchase ENERGY STAR-qualified products or FEMP-designated products in all product categories covered by these programs and in any acquisition actions that are not specifically exempted by law.

  5. Using Solar Hot Water to Address Piping Heat Losses in Multifamily Buildings

    SciTech Connect

    Springer, David; Seitzler, Matt; Backman, Christine; Weitzel, Elizabeth

    2015-10-01

    Solar thermal water heating is most cost effective when applied to multifamily buildings and some states offer incentives or other inducements to install them. However, typical solar water heating designs do not allow the solar generated heat to be applied to recirculation losses, only to reduce the amount of gas or electric energy needed for hot water that is delivered to the fixtures. For good reasons, hot water that is recirculated through the building is returned to the water heater, not to the solar storage tank. The project described in this report investigated the effectiveness of using automatic valves to divert water that is normally returned through the recirculation piping to the gas or electric water heater instead to the solar storage tank. The valves can be controlled so that the flow is only diverted when the returning water is cooler than the water in the solar storage tank.

  6. Realistic Hot Water Draw Specification for Rating Solar Water Heaters: Preprint

    SciTech Connect

    Burch, J.

    2012-06-01

    In the United States, annual performance ratings for solar water heaters are simulated, using TMY weather and specified water draw. A more-realistic ratings draw is proposed that eliminates most bias by improving mains inlet temperature and by specifying realistic hot water use. This paper outlines the current and the proposed draws and estimates typical ratings changes from draw specification changes for typical systems in four cities.

  7. Solar water heating technical support. Technical report for November 1997--April 1998 and final report

    SciTech Connect

    Huggins, J.

    1998-10-01

    This progress report covers the time period November 1, 1997 through April 30, 1998, and also summarizes the project as the final report. The topics of the report include certification of solar collectors for water heating systems, modeling and testing of solar collectors and gas water heater backup systems, ratings of collectors for specific climates, and solar pool heating systems.

  8. edition Not Available 14 SOLAR ENERGY; SOLAR ENERGY; EDUCATIONAL...

    Office of Scientific and Technical Information (OSTI)

    Home economics: student activities. Field test edition Not Available 14 SOLAR ENERGY; SOLAR ENERGY; EDUCATIONAL TOOLS; CURRICULUM GUIDES; GLAZING; HOUSES; SOLAR COOKERS; SOLAR...

  9. Sandia Energy - Solar Glare Hazard Analysis Tool

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Glare Hazard Analysis Tool Home Stationary Power Energy Conversion Efficiency Solar Energy Photovoltaics Solar Market Transformation Solar Glare Hazard Analysis Tool Solar...

  10. Do You Wonder How Much Energy Your Home Could Get from Solar...

    Energy.gov [DOE] (indexed site)

    where you would construct wind or solar, and plug in a few details about the installation you want. The tool will then estimate how much power you could make throughout the year. ...

  11. Solar collection

    SciTech Connect

    Cole, S.L.

    1984-08-01

    This report contains summaries and pictures of projects funded by the Appropriate Technology Small Grants Program which include the following solar technologies: solar dish; photovoltaics; passive solar building and solar hot water system; Trombe wall; hot air panel; hybrid solar heating system; solar grain dryer; solar greenhouse; solar hot water workshops; and solar workshops.

  12. Building America Case Study: Zero Energy Ready Home and the Challenge of Hot Water on Demand, Denver, Colorado (Fact Sheet), Technology Solutions for New and Existing Homes, Energy Efficiency & Renewable Energy (EERE)

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Zero Energy Ready Home and the Challenge of Hot Water on Demand Denver, Colorado SAMPLE HOME STATISTICS Construction: New production-built home Type: Single-family, detached Location: Stapleton Community, Denver, CO Stories: 2 Bedrooms: 5 Bathrooms: 3 Size: 2,330 ft 2 Year Completed: 2014 Building America Partner: IBACOS Inc., ibacos.com SAMPLE HOT WATER DELIVERY SYSTEM Piping material: Cross-linked polyethylene Hot water fixtures: 13 Farthest fixture first draw facts: * Pipe length: 90 ft *

  13. Solar High Temperature Water-Splitting Cycle with Quantum Boost

    SciTech Connect

    Taylor, Robin; Davenport, Roger; Talbot, Jan; Herz, Richard; Genders, David; Symons, Peter; Brown, Lloyd

    2014-04-25

    A sulfur family chemical cycle having ammonia as the working fluid and reagent was developed as a cost-effective and efficient hydrogen production technology based on a solar thermochemical water-splitting cycle. The sulfur ammonia (SA) cycle is a renewable and sustainable process that is unique in that it is an all-fluid cycle (i.e., with no solids handling). It uses a moderate temperature solar plant with the solar receiver operating at 800°C. All electricity needed is generated internally from recovered heat. The plant would operate continuously with low cost storage and it is a good potential solar thermochemical hydrogen production cycle for reaching the DOE cost goals. Two approaches were considered for the hydrogen production step of the SA cycle: (1) photocatalytic, and (2) electrolytic oxidation of ammonium sulfite to ammonium sulfate in aqueous solutions. Also, two sub-cycles were evaluated for the oxygen evolution side of the SA cycle: (1) zinc sulfate/zinc oxide, and (2) potassium sulfate/potassium pyrosulfate. The laboratory testing and optimization of all the process steps for each version of the SA cycle were proven in the laboratory or have been fully demonstrated by others, but further optimization is still possible and needed. The solar configuration evolved to a 50 MW(thermal) central receiver system with a North heliostat field, a cavity receiver, and NaCl molten salt storage to allow continuous operation. The H2A economic model was used to optimize and trade-off SA cycle configurations. Parametric studies of chemical plant performance have indicated process efficiencies of ~20%. Although the current process efficiency is technically acceptable, an increased efficiency is needed if the DOE cost targets are to be reached. There are two interrelated areas in which there is the potential for significant efficiency improvements: electrolysis cell voltage and excessive water vaporization. Methods to significantly reduce water evaporation are

  14. DOE Tour of Zero: Perkins Road by Revival Homes | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Perkins Road by Revival Homes DOE Tour of Zero: Perkins Road by Revival Homes 1 of 24 Revival Homes built this 1,380-square-foot home in Litchfield, Connecticut, to the performance criteria of the DOE Ready Home (ZERH) program. 2 of 24 The energy- and water-saving measures incorporated in this efficient home combined with the 7.6-kW solar electric generation system should save the homeowners an estimated $3,860 per year and $167,000 over a 30-year mortgage compared to a similar home built to

  15. DOE Tour of Zero: Perkins Road by Revival Homes | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Perkins Road by Revival Homes DOE Tour of Zero: Perkins Road by Revival Homes Addthis 1 of 24 Revival Homes built this 1,380-square-foot home in Litchfield, Connecticut, to the performance criteria of the DOE Ready Home (ZERH) program. 2 of 24 The energy- and water-saving measures incorporated in this efficient home combined with the 7.6-kW solar electric generation system should save the homeowners an estimated $3,860 per year and $167,000 over a 30-year mortgage compared to a similar home

  16. Secretary Chu Announces more than $200 Million for Solar and Water Power

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Technologies | Department of Energy more than $200 Million for Solar and Water Power Technologies Secretary Chu Announces more than $200 Million for Solar and Water Power Technologies April 22, 2010 - 12:00am Addthis WASHINGTON, DC - On the 40th Anniversary of Earth Day, U.S. Department of Energy Secretary Steven Chu announced that the Department will invest more than $200 million over five years to expand and accelerate the development, commercialization, and use of solar and water power

  17. Break-Even Cost for Residential Solar Water Heating in the United...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Break-even Cost for Residential Solar Water Heating in the United States: Key Drivers and Sensitivities Hannah Cassard, Paul Denholm, and Sean Ong Technical Report NREL...

  18. San Diego Solar Panels Generate Clean Electricity Along with Clean Water

    Office of Energy Efficiency and Renewable Energy (EERE)

    Thanks to San Diego's ambitious solar energy program, the Otay Water Treatment Plant may soon be able to do that with net zero electricity consumption.

  19. DOE Zero Energy Ready Home Case Study, Weiss Building & Development, LLC., System Home, River Forest, Illinois

    SciTech Connect

    none,

    2013-09-01

    The Passive House Challenge Home located in River Forest, Illinois, is a 5-bedroom, 4.5-bath, 3,600 ft2 two-story home (plus basement) that costs about $237 less per month to operate than a similar sized home built to the 2009 IECC. For a home with no solar photovoltaic panels installed, it scored an amazingly low 27 on the Home Energy Rating System (HERS) score.An ENERGY STAR-rated dishwasher, clothes washer, and refrigerator; an induction cooktop, condensing clothes dryer, and LED lighting are among the energy-saving devices inside the home. All plumbing fixtures comply with EPA WaterSense criteria. The home was awarded a 2013 Housing Innovation Award in the "systems builder" category.

  20. SRP - Solar Water Heating Program | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    on SRCC rating) Summary NOTE: SRP no longer provides incentives for solar electric photovoltaic systems. SRP's Solar Electric Program provides incentives to its residential...

  1. Best Practices Case Study: Rural Development, Inc., Wisdom Way Solar Village, Greenfield, MA

    SciTech Connect

    2010-12-01

    Wisdom Way Solar Village is an appropriate moniker for the 20-unit community of energy-efficient duplexes in Greenfield, MA. The homes meet the requirements of the U.S. Department of Energys Builders Challenge, achieving HERS scores of 8 to 18 by packing energy efficiency features into the compact, heavily insulated homes and adding solar water heating and photovoltaics on top, to net home owners energy cost savings of at least $2,500 per year per home.

  2. SLAC, Stanford Gadget Grabs More Solar Energy to Disinfect Water Faster:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Plopped Into water, a tiny device triggers the formation of chemicals that kill microbes in minutes | Department of Energy SLAC, Stanford Gadget Grabs More Solar Energy to Disinfect Water Faster: Plopped Into water, a tiny device triggers the formation of chemicals that kill microbes in minutes SLAC, Stanford Gadget Grabs More Solar Energy to Disinfect Water Faster: Plopped Into water, a tiny device triggers the formation of chemicals that kill microbes in minutes August 15, 2016 - 2:15pm

  3. Measured electric hot water standby and demand loads from Pacific Northwest homes

    SciTech Connect

    Pratt, R.G.; Ross, B.A.

    1991-11-01

    The Bonneville Power Administration began the End-Use Load and Consumer Assessment Program (ELCAP) in 1983 to obtain metered hourly end-use consumption data for a large sample of new and existing residential and commercial buildings in the Pacific Northwest. Loads and load shapes from the first 3 years of data fro each of several ELCAP residential studies representing various segments of the housing population have been summarized by Pratt et al. The analysis reported here uses the ELCAP data to investigate in much greater detail the relationship of key occupant and tank characteristics to the consumption of electricity for water heating. The hourly data collected provides opportunities to understand electricity consumption for heating water and to examine assumptions about water heating that are critical to load forecasting and conservation resource assessments. Specific objectives of this analysis are to: (A) determine the current baseline for standby heat losses by determining the standby heat loss of each hot water tank in the sample, (B) examine key assumptions affecting standby heat losses such as hot water temperatures and tank sizes and locations, (C) estimate, where possible, impacts on standby heat losses by conservation measures such as insulating tank wraps, pipe wraps, anticonvection valves or traps, and insulating bottom boards, (D) estimate the EF-factors used by the federal efficiency standards and the nominal R-values of the tanks in the sample, (E) develop estimates of demand for hot water for each home in the sample by subtracting the standby load from the total hot water load, (F) examine the relationship between the ages and number of occupants and the hot water demand, (G) place the standby and demand components of water heating electricity consumption in perspective with the total hot water load and load shape.

  4. DOE Challenge Home Program

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    solar ready details where there is a strong solar resource. ... Zero energy ready homes sounded like such a huge leap for ... of air, will share the pros and cons of these ...

  5. HUD (Housing and Urban Development) Intermediate Minimum Property Standards Supplement 4930. 2 (1989 edition). Solar heating and domestic hot water systems

    SciTech Connect

    Not Available

    1989-12-01

    The Minimum Property Standards for Housing 4910.1 were developed to provide a sound technical basis for housing under numerous programs of the Department of Housing and Urban Development (HUD). These Intermediate Minimum Property Standards for Solar Heating and Domestic Hot Water Systems are intended to provide a companion technical basis for the planning and design of solar heating and domestic hot water systems. These standards have been prepared as a supplement to the Minimum Property Standards (MPS) and deal only with aspects of planning and design that are different from conventional housing by reason of the solar systems under consideration. The document contains requirements and standards applicable to one- and two-family dwellings, multifamily housing, and nursing homes and intermediate care facilities references made in the text to the MPS refer to the same section in the Minimum Property Standards for Housing 4910.1.

  6. SolOPT: PV and Solar Hot Water Hourly Simulation Software Tool - Energy

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Innovation Portal Solar Photovoltaic Solar Photovoltaic Building Energy Efficiency Building Energy Efficiency Find More Like This Return to Search SolOPT: PV and Solar Hot Water Hourly Simulation Software Tool National Renewable Energy Laboratory Contact NREL About This Technology Publications: PDF Document Publication Using SolOPT (835 KB) Technology Marketing Summary In order to increase the speed and scale of Renewable Energy (RE) solar project deployment on buildings, energy savings

  7. NREL: Innovation Impact Home Page

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    NREL Innovation Impact Menu Home Home Solar Solar Wind Wind Analysis Analysis Bioenergy Bioenergy Buildings Buildings Transportation Transportation Manufacturing Manufacturing Energy Systems Integration Energy Systems Integration Innovation Impact NREL has a rich history of scientific innovation and partnering with industry. Explore examples of our accomplishments across renewable energy and energy efficiency research. Solar Solar Wind Wind Analysis Analysis Bioenergy Bioenergy Buildings

  8. Final report : testing and evaluation for solar hot water reliability.

    SciTech Connect

    Caudell, Thomas P.; He, Hongbo; Menicucci, David F.; Mammoli, Andrea A.; Burch, Jay

    2011-07-01

    Solar hot water (SHW) systems are being installed by the thousands. Tax credits and utility rebate programs are spurring this burgeoning market. However, the reliability of these systems is virtually unknown. Recent work by Sandia National Laboratories (SNL) has shown that few data exist to quantify the mean time to failure of these systems. However, there is keen interest in developing new techniques to measure SHW reliability, particularly among utilities that use ratepayer money to pay the rebates. This document reports on an effort to develop and test new, simplified techniques to directly measure the state of health of fielded SHW systems. One approach was developed by the National Renewable Energy Laboratory (NREL) and is based on the idea that the performance of the solar storage tank can reliably indicate the operational status of the SHW systems. Another approach, developed by the University of New Mexico (UNM), uses adaptive resonance theory, a type of neural network, to detect and predict failures. This method uses the same sensors that are normally used to control the SHW system. The NREL method uses two additional temperature sensors on the solar tank. The theories, development, application, and testing of both methods are described in the report. Testing was performed on the SHW Reliability Testbed at UNM, a highly instrumented SHW system developed jointly by SNL and UNM. The two methods were tested against a number of simulated failures. The results show that both methods show promise for inclusion in conventional SHW controllers, giving them advanced capability in detecting and predicting component failures.

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

    SciTech Connect

    none,

    2014-09-01

    The first certified Zero Energy Ready Home in Georgia was honored in the Custom Builder category of the 2014 Housing Innovation Awards. 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. Also included is electronic monitoring equipment that tracks the PV, solar thermal water heater, ERV, mini-split heat pump with three indoor heads, solar water heater, and LED and CFL lighting.

  10. Water use and supply concerns for utility-scale solar projects in the Southwestern United States.

    SciTech Connect

    Klise, Geoffrey Taylor; Tidwell, Vincent Carroll; Reno, Marissa Devan; Moreland, Barbara D.; Zemlick, Katie M.; Macknick, Jordan

    2013-07-01

    As large utility-scale solar photovoltaic (PV) and concentrating solar power (CSP) facilities are currently being built and planned for locations in the U.S. with the greatest solar resource potential, an understanding of water use for construction and operations is needed as siting tends to target locations with low natural rainfall and where most existing freshwater is already appropriated. Using methods outlined by the Bureau of Land Management (BLM) to determine water used in designated solar energy zones (SEZs) for construction and operations & maintenance, an estimate of water used over the lifetime at the solar power plant is determined and applied to each watershed in six Southwestern states. Results indicate that that PV systems overall use little water, though construction usage is high compared to O&M water use over the lifetime of the facility. Also noted is a transition being made from wet cooled to dry cooled CSP facilities that will significantly reduce operational water use at these facilities. Using these water use factors, estimates of future water demand for current and planned solar development was made. In efforts to determine where water could be a limiting factor in solar energy development, water availability, cost, and projected future competing demands were mapped for the six Southwestern states. Ten watersheds, 9 in California, and one in New Mexico were identified as being of particular concern because of limited water availability.

  11. DOE Zero Energy Ready Home Case Study: Shore Road Project - Old...

    Energy Saver

    ventilator. The house has a dual-fuel heat pump, an instantaneous condensing water heater, and 4.5-kW solar shingles. DOE Zero Energy Ready Home: Murphy Brothers Contracting,...

  12. Building America Whole-House Solutions for New Homes: Rural Developmen...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    homes (60 wo PV), with double-stud walls heavy insulation, low-load sealed-combustion gas space heaters, triple-pane windows, solar water heating, and PV. PDF icon Rural ...

  13. DOE Tour of Zero: Bellingham Power House by TC Legend Homes ...

    Energy Saver

    A greenhouse off the kitchen provides a thermal transition zone into the home, minimizing heat losses during the winter. The solar hot water heating panels are visible on the porch ...

  14. Building America Whole-House Solutions for New Homes: CDC Realty Inc., Tucson, Arizona

    Energy.gov [DOE]

    Case study of CDC Realty Inc. who worked with Building America research partner Building Science Corporation to design HERS-54 homes with ducts in insulated attics, solar water heating, tight air sealing, and rigid foam exterior sheathing.

  15. University of Maryland's "WaterShed" Wins 2011 Solar Decathlon | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Maryland's "WaterShed" Wins 2011 Solar Decathlon University of Maryland's "WaterShed" Wins 2011 Solar Decathlon October 3, 2011 - 2:02pm Addthis The University of Maryland's “WaterShed” won the 2011 Solar Decathlon. The school from College Park, Maryland competed against 18 other collegiate teams to build an aesthetically pleasing, architecturally innovative and well-engineered energy efficient living space that generates its energy from solar power. |

  16. Solar conductive spa water heater and safety cover

    SciTech Connect

    Ely, G.W.

    1987-04-28

    This patent describes a solar conductive portable cover for a spa which has an opening for access comprising a rigid plastic member vacuum formed in a series of interconnected parallel U-shaped channels. Each channel is separated from an adjacent channel by a wall. A shape conforms plastic top solvent or heat is welded to a top surface of the walls to form a cover wider in diameter than the opening of the spa, such that the cover rests on coping at the top of the spa. Method is described for heating water for a spa comprising covering the top of the spa with a portable rigid thin plastic member forming a cover wider than the opening of the spa such that the cover rests on coping at the top of the spa and having a series of parallel U-shaped channels.

  17. Un-Nanostructuring Solar Cells | ANSER Center | Argonne-Northwestern...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Un-Nanostructuring Solar Cells Home > Research > ANSER Research Highlights > Un-Nanostructuring Solar Cells...

  18. A Realistic Hot Water Draw Specification for Rating Solar Water Heaters: Preprint

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Realistic Hot Water Draw Specification for Rating Solar Water Heaters Preprint J. Burch National Renewable Energy Laboratory J. Thornton Thermal Energy System Specialists, Inc. Presented at the 2012 World Renewable Energy Forum Denver, Colorado May 13-17, 2012 Conference Paper NREL/CP-5500-54539 June 2012 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308.

  19. REFLECT HOME

    Energy.gov [DOE]

    Sacramento is nicknamed the City of Trees, so it made sense for the California State University, Sacramento, team to showcase nature in its Solar Decathlon 2015 project. The team’s Reflect Home does just that by embracing the city’s sense of expansive greenery.

  20. Measure Guideline: Heat Pump Water Heaters in New and Existing Homes

    SciTech Connect

    Shapiro, C.; Puttagunta, S.; Owens, D.

    2012-02-01

    This Building America Measure Guideline is intended for builders, contractors, homeowners, and policy-makers. This document is intended to explore the issues surrounding heat pump water heaters (HPWHs) to ensure that homeowners and contractors have the tools needed to appropriately and efficiently install HPWHs. Heat pump water heaters (HPWHs) promise to significantly reduce energy consumption for domestic hot water (DHW) over standard electric resistance water heaters (ERWHs). While ERWHs perform with energy factors (EFs) around 0.9, new HPWHs boast EFs upwards of 2.0. High energy factors in HPWHs are achieved by combining a vapor compression system, which extracts heat from the surrounding air at high efficiencies, with electric resistance element(s), which are better suited to meet large hot water demands. Swapping ERWHs with HPWHs could result in roughly 50% reduction in water heating energy consumption for 35.6% of all U.S. households. This Building America Measure Guideline is intended for builders, contractors, homeowners, and policy-makers. While HPWHs promise to significantly reduce energy use for DHW, proper installation, selection, and maintenance of HPWHs is required to ensure high operating efficiency and reliability. This document is intended to explore the issues surrounding HPWHs to ensure that homeowners and contractors have the tools needed to appropriately and efficiently install HPWHs. Section 1 of this guideline provides a brief description of HPWHs and their operation. Section 2 highlights the cost and energy savings of HPWHs as well as the variables that affect HPWH performance, reliability, and efficiency. Section 3 gives guidelines for proper installation and maintenance of HPWHs, selection criteria for locating HPWHs, and highlights of important differences between ERWH and HPWH installations. Throughout this document, CARB has included results from the evaluation of 14 heat pump water heaters (including three recently released HPWH

  1. Solar Energy Education. Renewable energy activities for earth science

    SciTech Connect

    Not Available

    1980-01-01

    A teaching manual is provided to aid teachers in introducing renewable energy topics to earth science students. The main emphasis is placed on solar energy. Activities for the student include a study of the greenhouse effect, solar gain for home heating, measuring solar radiation, and the construction of a model solar still to obtain fresh water. Instructions for the construction of apparatus to demonstrate a solar still, the greenhouse effect and measurement of the altitude and azimuth of the sun are included. (BCS)

  2. DOE Zero Energy Ready Home Case Study: Mandalay Homes, Phoenix, AZ, Affordable

    Office of Energy Efficiency and Renewable Energy (EERE)

    Case study of a DOE Zero Energy Ready Home in Phoenix, AZ, that scored HERS 58 without PV or HERS 38 with PV. This 1,700-square-foot affordable home has R-21 framed walls, a sealed closed-cell spray foamed attic, an air-source heat pump with forced air, and a solar combo system that provides PV, hot water, and space heating.

  3. Best Practices Solar Case Study: John Wesley Miller Companies, Armory Park del Sol - Tucson, AZ

    SciTech Connect

    2007-06-01

    Building America factsheet on JW Miller, an energy-efficient home builder in hot/mixed dry climate using solar photovoltaics and hot water, efficient HVAC and duct system, and tankless water heater.

  4. Sandia Energy - Concentrating Solar Power Technical Management...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Concentrating Solar Power Technical Management Position Home Renewable Energy Energy Facilities News Concentrating Solar Power Solar Job Listing National Solar Thermal Test...

  5. Solar Newsletter

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ... Sciences Applications National Solar Thermal Test Facility Nuclear Energy ...

  6. Solar Energy

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ... Sciences Applications National Solar Thermal Test Facility Nuclear Energy ...

  7. ZERH Webinar: Energy- and Water- Efficiency in the DOE Zero Energy Ready Home Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    The U.S. Department of Energy Zero Energy Ready Home (ZERH) Program represents a whole new level of home performance, with rigorous requirements that ensure outstanding levels of energy savings,...

  8. Report on the analysis of field data relating to the reliability of solar hot water systems.

    SciTech Connect

    Menicucci, David F.

    2011-07-01

    Utilities are overseeing the installations of thousand of solar hot water (SHW) systems. Utility planners have begun to ask for quantitative measures of the expected lifetimes of these systems so that they can properly forecast their loads. This report, which augments a 2009 reliability analysis effort by Sandia National Laboratories (SNL), addresses this need. Additional reliability data have been collected, added to the existing database, and analyzed. The results are presented. Additionally, formal reliability theory is described, including the bathtub curve, which is the most common model to characterize the lifetime reliability character of systems, and for predicting failures in the field. Reliability theory is used to assess the SNL reliability database. This assessment shows that the database is heavily weighted with data that describe the reliability of SHW systems early in their lives, during the warranty period. But it contains few measured data to describe the ends of SHW systems lives. End-of-life data are the most critical ones to define sufficiently the reliability of SHW systems in order to answer the questions that the utilities pose. Several ideas are presented for collecting the required data, including photometric analysis of aerial photographs of installed collectors, statistical and neural network analysis of energy bills from solar homes, and the development of simple algorithms to allow conventional SHW controllers to announce system failures and record the details of the event, similar to how aircraft black box recorders perform. Some information is also presented about public expectations for the longevity of a SHW system, information that is useful in developing reliability goals.

  9. Solar heating and hot water system installed at St. Louis, Missouri. Final report

    SciTech Connect

    Not Available

    1980-04-01

    Information is provided on the solar heating and hot water system installed at the William Tao and Associates, Inc., office building in St. Louis, Missouri. The information consists of description, photos, maintenance and construction problems, final drawing, system requirements and manufacturer's component data. The solar system was designed to provide 50% of the hot water requirements and 45% of the space heating needs for a 900 square foot office space and drafting room. The solar facility has 252 square foot of glass tube concentrator collectors and a 1000 gallon steel storage tank buried below a concrete slab floor. Freeze protection is provided by a propylene glycol/water mixture in the collector loop. The collectors are roof mounted on a variable tilt array which is adjusted seasonally and is connected to the solar thermal storage tank by a tube-in-shell heat exchanger. Incoming city water is preheated through the solar energy thermal storage tank.

  10. Types of Homes | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Homes Types of Homes Manufactured homes are one type of home that may require special considerations for energy efficiency and renewable energy technologies. | Photo courtesy of Florida Solar Energy Center. Manufactured homes are one type of home that may require special considerations for energy efficiency and renewable energy technologies. | Photo courtesy of Florida Solar Energy Center. Some types of homes may require different considerations when it comes to energy efficiency. You may be

  11. Trinity Solar | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search Name: Trinity Solar Place: Freehold, New Jersey Zip: 7728 Sector: Solar Product: A provider of solar energy systems to home and business owners. Coordinates: 42.376865,...

  12. Solar Water Heating Requirement for New Residential Construction

    Energy.gov [DOE]

    As of January 1, 2010, building permits may not be issued for new single-family homes that do not include a SWH system. The state energy resources coordinator may provide a variance for this...

  13. Solar Array on Portland Water Bureau Meter Shop

    Energy.gov [DOE]

    In this photograph, the 12-kilowatt photovoltaic (PV) array is the largest system entirely owned by the City of Portland. Portland is a Solar America City.

  14. [pic] EERE Web Site Statistics - Solar Decathlon

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... |1.|Department of Energy Solar Decathlon Home Page http: www. solardecathl on. org |43,756|61,116| |2.|EERE: Department of Energy Solar Decathlon Home Page http: ...

  15. Home Energy Score Sample Report

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ADDRESS HOME SIZE YEAR BUILT AIR CONDITIONING Home Energy Score Score Home Facts Recommendations The Home Energy Score is a national rating system developed by the U.S. Department of Energy. The Score reflects the energy efficiency of a home based on the home's structure and heating, cooling, and hot water systems. The Home Facts provide details about the current structure and systems. Recommendations show how to improve the energy efficiency of the home to achieve a higher score and save money.

  16. Water Pollution Control Plant Solar Site Evaluation: San José

    Office of Energy Efficiency and Renewable Energy (EERE)

    This report describes the findings of a solar site evaluation conducted at the San Jose/Santa Clara Water Pollution Control Plant (Site) in the City of San Jose, California (City). This evaluation was conducted as part of a larger study to assess solar potential at multiple public facilities within the City.

  17. Sustainable Energy Resources for Consumers (SERC) - Solar Hot Water |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy solar_thermal_transcript.pdf (148.79 KB) More Documents & Publications Sustainable Energy Resources for Consumers (SERC) - Geothermal/Ground-Source Heat Pumps SERC Photovoltaics for Residential Buildings Webinar Transcript Recording of SERC Monitoring Technologies - Solar Photovoltaics

  18. California Solar Initiative- Low-Income Solar Water Heating Rebate Program

    Energy.gov [DOE]

    The California Public Utilities Commission (CPUC) voted in October 2011 to create the California Solar Initiative (CSI) Thermal Low-Income program for single and multifamily residential properties....

  19. DOE Challenge Home Case Study, Clifton View Homes, Coupeville...

    Energy Saver

    Clifton, founder of Clifton View Homes, achieved an impressive Home Energy Rating System (HERS) score of 34 (without solar panels) on a two-story structure completed in July 2011 ...

  20. DOE Zero Energy Ready Home Case Study: Manatee County Habitat for Humanity, Ellenton, FL, Affordable

    Energy.gov [DOE]

    Case study of a DOE Zero Energy Ready Home in Ellenton, FL, that scored HERS 53 without PV, HERS 23 with PV. This 1,143-square-foot affordable home has R-23 ICF walls, a spray-foamed sealed attic, solar hot water, and a ducted mini-split heat pump.

  1. Solar Energy Water Desalination in the United States and Saudi Arabia

    SciTech Connect

    Luft, W.

    1981-04-01

    Five solar energy water desalination systems are described. The systems will each deliver 6000 m3/day of desalted water from either seawater or brackish water. After the system definition study is completed in August 1981, two systems will be selected for pilot plant construction. The pilot plants will have capacities in the range of 1 00 to 400 m3/day.

  2. Development of a Long-Life-Cycle, Highly Water-Resistant Solar...

    Office of Scientific and Technical Information (OSTI)

    of a Long-Life-Cycle, Highly Water-Resistant Solar Reflective Retrofit Roof Coating Citation Details In-Document Search Title: Development of a Long-Life-Cycle, Highly ...

  3. Duke Energy Florida- SunSense Solar Water Heating with EnergyWise

    Energy.gov [DOE]

    Duke Energy Florida (DEF) launched the Solar Water Heating with EnergyWise Program in February 2007 to encourage its residential customers to participate in its load control program and install a...

  4. Clay Electric Cooperative, Inc- Energy Smart Solar Water Heater Rebate Program

    Energy.gov [DOE]

    Clay Electric Cooperative (CEC) provides a rebate of $0.01 per BTU output to its residential members when they purchase qualified solar water heaters. This rebate is capped at 60,000 BTUs per...

  5. Residential Water Heaters Webinar | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Residential Water Heaters Webinar Residential Water Heaters Webinar 20110224_residential_water_heater_webinar.pdf (1.77 MB) More Documents & Publications Sustainable Energy Resources for Consumers (SERC) - On-Demand Tankless Water Heaters 2014-10-14 Issuance: Test Procedures and Energy Conservation Standards for Residential Solar Water Heaters; Request for Information Webinar: ENERGY STAR Hot Water Systems for High Performance Homes

  6. Air-To-Water Heat Pumps with Radiant Delivery in Low Load Homes: Tucson, Arizona and Chico, California (Fact Sheet)

    SciTech Connect

    Not Available

    2013-11-01

    Space conditioning represents nearly 50% of average residential household energy consumption, highlighting the need to identify alternative cost-effective, energy-efficient cooling and heating strategies. As homes are better built, there is an increasing need for strategies that are particularly well suited for high performance, low load homes. ARBI researchers worked with two test homes in hot-dry climates to evaluate the in-situ performance of air-to-water heat pump (AWHP) systems, an energy efficient space conditioning solution designed to cost-effectively provide comfort in homes with efficient, safe, and durable operation. Two monitoring projects of test houses in hot-dry climates were initiated in 2010 to test this system. Both systems were fully instrumented and have been monitored over one year to capture complete performance data over the cooling and heating seasons. Results are used to quantify energy savings, cost-effectiveness, and system performance using different operating modes and strategies. A calibrated TRNSYS model was developed and used to evaluate performance in various climate regions. This strategy is most effective in tight, insulated homes with high levels of thermal mass (i.e. exposed slab floors).

  7. Hot water tank for use with a combination of solar energy and heat-pump desuperheating

    DOEpatents

    Andrews, J.W.

    1980-06-25

    A water heater or system is described which includes a hot water tank having disposed therein a movable baffle to function as a barrier between the incoming volume of cold water entering the tank and the volume of heated water entering the tank which is heated by the circulation of the cold water through a solar collector and/or a desuperheater of a heat pump so as to optimize the manner in which heat is imparted to the water in accordance to the demand on the water heater or system. A supplemental heater is also provided and it is connected so as to supplement the heating of the water in the event that the solar collector and/or desuperheater cannot impart all of the desired heat input into the water.

  8. Hot water tank for use with a combination of solar energy and heat-pump desuperheating

    DOEpatents

    Andrews, John W.

    1983-06-28

    A water heater or system which includes a hot water tank having disposed therein a movable baffle to function as a barrier between the incoming volume of cold water entering the tank and the volume of heated water entering the tank which is heated by the circulation of the cold water through a solar collector and/or a desuperheater of a heat pump so as to optimize the manner in which heat is imparted to the water in accordance to the demand on the water heater or system. A supplemental heater is also provided and it is connected so as to supplement the heating of the water in the event that the solar collector and/or desuperheater cannot impart all of the desired heat input into the water.

  9. Low-cost Batch Solar Water Heater research and development project. Final report

    SciTech Connect

    Stickney, B.L.

    1983-06-01

    This report presents a summary of the development and testing of Batch Solar Water Heaters. Batch Heaters tested include several kinds of tank-under-glass (Breadbox) models and several types of Inverted Batch Solar Water Heaters with both fixed and moveable reflector systems. Temperature graphs and tables of performance indices are presented for each water heater tested. An Inverted Batch Water Heater was developed based upon the test results called the Bottomgainer. Two prototypes of the Bottomgainer model were installed and monitored in use on residences. The Bottomgainer concept could be adapted to commercial production.

  10. DOE Zero Ready Home Case Study: Cobblestone Homes, 2014 Model...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... located in Midland, Michigan, headquarters of DOW Chemical, which provided solar photovoltaic roofing shingles for the home and is conducting a year's worth of energy monitoring. ...

  11. Texas Gas Service- Residential Solar Water Heating Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Only active systems with panels (or collectors) that are certified OG-100 by the Solar Rating Certification Corporation (SRCC) qualify for this rebate. Work must be completed by a licensed contra...

  12. Wisdom Way Solar Village

    SciTech Connect

    2009-03-10

    This article gives an overview of Wisdom Way Village, a community of affordable, sustainable solar homes in Greenfield, MA.

  13. Heating Water with Solar Energy Costs Less at the Phoenix Federal Correctional Institution

    SciTech Connect

    2004-09-01

    A large solar thermal system installed at the Phoenix Federal Correctional Institution (FCI) in 1998 heats water for the prison and costs less than buying electricity to heat that water. This renewable energy system provides 70% of the facility's annual hot water needs. The Federal Bureau of Prisons did not incur the up-front cost of this system because it was financed through an Energy Savings Performance Contract (ESPC). The ESPC payments are 10% less than the energy savings so that the prison saves an average of $6,700 per year, providing an immediate payback. The solar hot water system produces up to 50,000 gallons of hot water daily, enough to meet the needs of 1,250 inmates and staff who use the kitchen, shower, and laundry facilities. This publication details specifications of the parabolic trough solar system and highlights 5 years of measured performance data.

  14. Measured Performance of Occupied, Side-by-Side, South Texas Homes

    SciTech Connect

    Chasar, Dave; vonSchramm, Valerie

    2012-09-01

    The performance of three homes in San Antonio, Texas with identical floor plans and orientation were evaluated through a partnership between the Florida Solar Energy Center (FSEC), CPS Energy, and Woodside Homes of South Texas. Measurements included whole house gas and electric use as well as heating, cooling, hot water, major appliances and indoor and outdoor conditions. One home built to builder standard practice served as the control, while the other homes demonstrated high performance features. Utility peak electric load comparisons of these dual-fuel homes provide an assessment of envelope and equipment improvements.

  15. DOE Zero Energy Ready Home PV-Ready Checklist | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    PV-Ready Checklist DOE Zero Energy Ready Home PV-Ready Checklist All homes certified as DOE Zero Energy Ready Homes must meet the mandatory requirements listed in Exhibit 1 of the National Program Requirements, including Requirement 7 Renewable Ready, which requires that homes meet the requirements listed in the PV-Ready Checklist. See the Checklist document for exceptions PV-Ready Checklist.pdf (86.15 KB) More Documents & Publications DOE Zero Energy Ready Home Solar Hot Water-Ready

  16. REFLECT HOME | Department of Energy

    Energy.gov [DOE] (indexed site)

    so it made sense for the California State University, Sacramento, team to showcase nature in its Solar Decathlon 2015 project. The team's Reflect Home does just that by...

  17. New Whole-House Solutions Case Study: Tommy Williams Homes Initial Performance of Two Zero Energy Homes, Gainesville, Florida

    SciTech Connect

    none,

    2011-11-01

    Tommy Williams Homes worked with PNNL, Florida HERO, Energy Smart Home Plans, and Florida Solar Energy Center to design and test two zero energy homes. Energy use was 30% lower in one home and 60% lower in the other.

  18. Community Water Pump and Treatment Facility PV Solar Power Project

    Energy Saver

    200,000 kWhyear PROJECT LOCATION SITE DETAILS Water Pump and Treatment Facility Sole provider of water to Pueblo and its 5,000 residents 1 pump house, 2 water ...

  19. Building America Efficient Solutions for New Homes Case Study: Tommy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Williams Homes Initial Performance of Two Zero Energy Homes, Gainesville, Florida | Department of Energy Tommy Williams Homes Initial Performance of Two Zero Energy Homes, Gainesville, Florida Building America Efficient Solutions for New Homes Case Study: Tommy Williams Homes Initial Performance of Two Zero Energy Homes, Gainesville, Florida Tommy Williams Homes worked with PNNL, Florida HERO, Energy Smart Home Plans, and Florida Solar Energy Center to design and test two zero energy homes.

  20. SOLERAS - Solar Energy Water Desalination Project: Martin Marietta Corporation. Pilot plant final report

    SciTech Connect

    Not Available

    1985-01-01

    This report documents the technical effort of Martin Marietta Corporation, in association with Black and Veatch International as a subcontractor for the trade studies performed to design a Solar Desalination Pilot Plant is documented. The final system configuration utilizes existing technology to convert seawater to potable water. This technology includes the collection of solar energy, storage of this energy in a fluid heat transfer medium, generation of steam and electricity from this stored energy, utilization of low pressure turbine exhaust steam as a source of energy to distill salt water, and also generation of potable water through the use of a reverse osmosis unit.

  1. Solar Contractor Licensing | Department of Energy

    Energy.gov [DOE] (indexed site)

    < Back Eligibility InstallersContractors Savings Category Solar - Passive Solar Water Heat Solar Space Heat Solar Thermal Electric Solar Thermal Process Heat Solar Photovoltaics...

  2. Sandia Energy - Solar Glare Hazard Analysis Tool Available for...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Glare Hazard Analysis Tool Available for Download Home Renewable Energy Energy News News & Events Photovoltaic Solar Solar Newsletter Solar Glare Hazard Analysis Tool...

  3. Sandia Energy - National Solar Thermal Testing Facility Beam...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    National Solar Thermal Testing Facility Beam Profiling Home Renewable Energy News Concentrating Solar Power Solar National Solar Thermal Testing Facility Beam Profiling Previous...

  4. Home Design & Remodeling | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

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

  5. Efficient Solar Concentrators: Affordable Energy from Water and Sunlight

    SciTech Connect

    2010-01-01

    Broad Funding Opportunity Announcement Project: Teledyne is developing a liquid prism panel that tracks the position of the sun to help efficiently concentrate its light onto a solar cell to produce power. Typically, solar tracking devices have bulky and expensive mechanical moving parts that require a lot of power and are often unreliable. Teledyne’s liquid prism panel has no bulky and heavy supporting parts—instead it relies on electrowetting. Electrowetting is a process where an electric field is applied to the liquid to control the angle at which it meets the sunlight above and to control the angle of the sunlight to the focusing lensthe more direct the angle to the focusing lens, the more efficiently the light can be concentrated to solar panels and converted into electricity. This allows the prism to be tuned like a radio to track the sun across the sky and steer sunlight into the solar cell without any moving mechanical parts. This process uses very little power and requires no expensive supporting hardware or moving parts, enabling efficient and quiet rooftop operation for integration into buildings.

  6. DOE Challenge Home Case Study: e2 Homes – Winter Park, Florida

    SciTech Connect

    none,

    2013-01-01

    This Challenge Home case study describes the first certified DOE Challenge Home as constructed by e2 Homes. Completed in May 2012, the “Wilson Residence” in Winter Park, Florida, is a 4,305-ft2 custom home that scores a HERS 57 without solar and a better than zero net-energy HERS -7 with solar.

  7. Solar House in Maummee, Ohio

    Energy.gov [DOE]

    This photograph features a home in Maumee, Ohio, built by Decker Homes of Lambertville, Michigan, with a photovoltaic (PV) solar electric system that uses building integrated photovoltaic (BIPV)...

  8. Thermal performance testing and mathematically modeling of integral collector storage solar hot water systems. Final report

    SciTech Connect

    Thomas, W.C.

    1985-02-01

    An investigation was carried out to evaluate a possible alternative test method for integral collector storage solar hot water systems. The new test method is an alternative to the established consensus standard method which requires that integral collector storage systems be tested using a solar irradiance simulator. The concept behind the alternative method is to characterize the thermal performance of the solar collection elements in the integral system using standard test methods for conventional solar collectors. After measuring the efficiency and incident angle response, the integral collector storage hot water system would be tested using an electrical heat source to simulate the absorbed solar energy. The research included both experimental and analytical investigations on the collector elements and on the complete system. All-day tests were performed on two commercial integral collector storage solar domestic hot water systems. Tests were performed under a variety of ambient conditions and irradiance levels. An analytical model was developed to predict the thermal performance of one of the systems. Predicted performance was compared with experimental results. Experimental and analytical results indicated that thermal stratification has a minimal effect on the daily collection efficiency of integral storage collectors. While the investigation showed that it is technically feasible to implement the new test method, further recommendations on implementation are contigent on validation of the method in a system test facility.

  9. Environmental Solar Systems | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Environmental Solar Systems Address: 117 West Street Place: Methuen, Massachusetts Zip: 01844 Region: Greater Boston Area Sector: Solar Product: Solar thermal panels for home...

  10. Solar

    Energy.gov [DOE]

    Learn about the Energy Department's efforts to advance innovative technologies that drive down the cost of solar energy in America.

  11. Aqueous propylene-glycol concentrations for the freeze protection of thermosyphon solar energy water heaters

    SciTech Connect

    Norton, B. ); Edmonds, J.E.J. )

    1991-01-01

    Using a validated dynamic simulation model, the thermal performance of an indirect thermosyphon solar energy water heater was examined. The heat transfer fluids employed were aqueous solutions of propylene glycol. The effect of varying the glycol concentration on the hot water output and efficacy of freeze protection was determined for a specific pattern of hot water withdrawal and weather for the temperature maritime climate of London, England. The heat output is compared with that of a drain-down direct system.

  12. SOLERAS - Solar Energy Water Desalination Project: Boeing Engineering and Construction. System design final report

    SciTech Connect

    Not Available

    1986-01-01

    The system design for a future commercial solar energy brackish water desalination plant is described. Key features of the plant are discussed along with its configuration selection rationale, design objectives, operation, and performance. The water treatment technology used in the plant is ion exchange pretreatment and single stage reverse osmosis desalination utilizing high-flux membranes. Electrical power needed for plant operation is produced by a solar energy system, which is based on the Brayton cycle having air as the working fluid. Primary solar system components are: heliostat field, central cavity-tube receiver, receiver support tower, thermal energy storage, and a commercial gas turbine generator set. The thermal energy storage subsystem is of the sensible heat brick type and provides a capability for continuous day/night power generation during most weather conditions. This system design was selected in a study of various system alternatives and their life cycle product water costs for a representative site in western Texas.

  13. Heating Water with Solar Energy Costs Less at the Phoenix Federal Correctional Institution

    SciTech Connect

    Not Available

    2004-09-01

    A large solar thermal system installed at the Phoenix Federal Correctional Institution (FCI) in 1998 heats water for the prison and costs less than buying electricity to heat that water. This renewable energy system provides 70% of the facility's annual hot water needs. The Federal Bureau of Prisons did not incur the up-front cost of this system because it was financed through an Energy Savings Performance Contract (ESPC). The ESPC payments are 10% less than the energy savings so that the prison saves an average of$6,700 per year, providing an immediate payback. The solar hot water system produces up to 50,000 gallons of hot water daily, enough to meet the needs of 1,250 inmates and staff who use the kitchen, shower, and laundry facilities.

  14. High Efficiency Generation of Hydrogen Fuels Using Solar Thermochemical Splitting of Water

    SciTech Connect

    Heske, Clemens; Moujaes, Samir; Weimer, Alan; Wong, Bunsen; Siegal, Nathan; McFarland, Eric; Miller, Eric; Lewis, Michele; Bingham, Carl; Roth, Kurth; Sabacky, Bruce; Steinfeld, Aldo

    2011-09-29

    The objective of this work is to identify economically feasible concepts for the production of hydrogen from water using solar energy. The ultimate project objective was to select one or more competitive concepts for pilot-scale demonstration using concentrated solar energy. Results of pilot scale plant performance would be used as foundation for seeking public and private resources for full-scale plant development and testing. Economical success in this venture would afford the public with a renewable and limitless source of energy carrier for use in electric power load-leveling and as a carbon-free transportation fuel. The Solar Hydrogen Generation Research (SHGR) project embraces technologies relevant to hydrogen research under the Office of Hydrogen Fuel Cells and Infrastructure Technology (HFCIT) as well as concentrated solar power under the Office of Solar Energy Technologies (SET). Although the photoelectrochemical work is aligned with HFCIT, some of the technologies in this effort are also consistent with the skills and technologies found in concentrated solar power and photovoltaic technology under the Office of Solar Energy Technologies (SET). Hydrogen production by thermo-chemical water-splitting is a chemical process that accomplishes the decomposition of water into hydrogen and oxygen using only heat or a combination of heat and electrolysis instead of pure electrolysis and meets the goals for hydrogen production using only water and renewable solar energy as feed-stocks. Photoelectrochemical hydrogen production also meets these goals by implementing photo-electrolysis at the surface of a semiconductor in contact with an electrolyte with bias provided by a photovoltaic source. Here, water splitting is a photo-electrolytic process in which hydrogen is produced using only solar photons and water as feed-stocks. The thermochemical hydrogen task engendered formal collaborations among two universities, three national laboratories and two private sector

  15. FEMP Solar Hot Water Calculator | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Water Calculator AgencyCompany Organization: Federal Energy Management Program Sector: Energy Focus Area: Buildings Phase: Determine Baseline Topics: Baseline projection...

  16. High Performance Builder Spotlight: LifeStyle Homes

    SciTech Connect

    2011-01-01

    LifeStyle Homes of Melbourne, Florida, is aiming for affordable net zero energy homes with help from Building America research partner Florida Solar Energy Center.

  17. Vista Montana, Watsonville, California: Moving Toward Zero Energy Homes

    SciTech Connect

    2003-12-01

    Fact sheet describes the energy efficient and solar energy features of the Vista Montana Zero Energy Home, participant in the Zero Energy Homes initiative.

  18. Characteristics and experiences of applicants for HUD grants for solar water heaters

    SciTech Connect

    Jones, W.H.

    1980-01-01

    Thirty-eight winners and 45 losers of HUD solar water heater grants in the Florida panhandle were interviewed in 1978 concerning their experiences, and their solar installations were inspected. Operational problems were mostly attributable to control system failure. Grantees were generally pleased with the subsidy program. Grant recipients were not typical of the general public, in that they were mostly middle-aged, well-educated, reasonably affluent people who had a technical background, liked to do things on their own, and were fairly sophisticated so far as energy problems were concerned. It may be that the grant program is not having a great effect on solar energy commercialization, except perhaps in terms of publicity; the recipients generally would have installed systems without a grant, and most of the losers had gone ahead with a solar installation or were planning to do so.

  19. DOE Zero Energy Ready Home Case Study: Clifton View Homes, Coupeville, Washington

    SciTech Connect

    none,

    2013-09-01

    Ted Clifton, founder of Clifton View Homes, achieved an impressive Home Energy Rating System (HERS) score of 34 (without solar panels) on a two-story home completed in July 2011 that also earned him his first Challenge Home certification from the U.S. Department of Energy (DOE). This home also garnered a 2013 Housing Innovation Award in the "systems builder" category.

  20. Technology Solutions Case Study: Air-To-Water Heat Pumps with Radiant Delivery in Low Load Homes, Tucson, Arizona and Chico, California

    SciTech Connect

    2013-11-01

    Space conditioning represents nearly 50% of average residential household energy consumption, highlighting the need to identify alternative cost-effective, energy-efficient cooling and heating strategies. As homes are better built, there is an increasing need for strategies that are particularly well suited for high performance, low load homes. ARBI researchers worked with two test homes in hot-dry climates to evaluate the in-situ performance of air-to-water heat pump (AWHP) systems, an energy efficient space conditioning solution designed to cost-effectively provide comfort in homes with efficient, safe, and durable operation. Both systems were fully instrumented and have been monitored over one year to capture complete performance data over the cooling and heating seasons. Results are used to quantify energy savings, cost-effectiveness, and system performance using different operating modes and strategies. This strategy is most effective in tight, insulated homes with high levels of thermal mass (i.e. exposed slab floors).

  1. National Solar Thermal Test Facility

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    SunShot Grand Challenge: Regional Test Centers National Solar Thermal Test Facility HomeTag:National Solar Thermal Test Facility Permalink Air Force Research Laboratory Testing ...

  2. HSC Solar | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    for homes is continuing to drop significantly making this the ideal time to consider solar panel installation. Every household using electricity will see benefit with a solar...

  3. National Solar Thermal Test Facility

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    SunShot Grand Challenge: Regional Test Centers National Solar Thermal Test Facility HomeTag:National Solar Thermal Test Facility Illuminated receiver on top of tower Permalink ...

  4. Corona Department of Water & Power- Solar Partnership Rebate Program

    Energy.gov [DOE]

    Corona Department of Water & Power is providing rebates for residential and commercial photovoltaic (PV) systems. The rebate amount for 2015 is $0.78 per watt up to $2,340 for residential...

  5. Burbank Water and Power- Residential and Commercial Solar Support Program

    Energy.gov [DOE]

    Burbank Water and Power (BWP) offers customers an up-front capacity-based rebate for photovoltaic (PV) systems up to 30 kW. These incentives decline over time as defined capacity goals are met, e...

  6. DOE NSF Partnership to Address Critical Challenges in Hydrogen Production from Solar Water Splitting

    Energy.gov [DOE]

    EERE and the National Science Foundation (NSF) announce a funding opportunity in the area of renewable hydrogen technology research and development, specifically addressing discovery and development of advanced materials systems and chemical proceesses for direct photochemical and/or thermochemical water splitting for application in the solar production of hydrogen fuel.

  7. Measured electric hot water standby and demand loads from Pacific Northwest homes. End-Use Load and Consumer Assessment Program

    SciTech Connect

    Pratt, R.G.; Ross, B.A.

    1991-11-01

    The Bonneville Power Administration began the End-Use Load and Consumer Assessment Program (ELCAP) in 1983 to obtain metered hourly end-use consumption data for a large sample of new and existing residential and commercial buildings in the Pacific Northwest. Loads and load shapes from the first 3 years of data fro each of several ELCAP residential studies representing various segments of the housing population have been summarized by Pratt et al. The analysis reported here uses the ELCAP data to investigate in much greater detail the relationship of key occupant and tank characteristics to the consumption of electricity for water heating. The hourly data collected provides opportunities to understand electricity consumption for heating water and to examine assumptions about water heating that are critical to load forecasting and conservation resource assessments. Specific objectives of this analysis are to: (A) determine the current baseline for standby heat losses by determining the standby heat loss of each hot water tank in the sample, (B) examine key assumptions affecting standby heat losses such as hot water temperatures and tank sizes and locations, (C) estimate, where possible, impacts on standby heat losses by conservation measures such as insulating tank wraps, pipe wraps, anticonvection valves or traps, and insulating bottom boards, (D) estimate the EF-factors used by the federal efficiency standards and the nominal R-values of the tanks in the sample, (E) develop estimates of demand for hot water for each home in the sample by subtracting the standby load from the total hot water load, (F) examine the relationship between the ages and number of occupants and the hot water demand, (G) place the standby and demand components of water heating electricity consumption in perspective with the total hot water load and load shape.

  8. Measured Performance of Occupied, Side-by-Side, South Texas Homes

    SciTech Connect

    Chasar, D.; vonSchramm, V.

    2012-09-01

    The performance of three homes in San Antonio, Texas with identical floor plans and orientation were evaluated through a partnership between the Florida Solar Energy Center (FSEC), CPS Energy, and Woodside Homes of South Texas. Measurements included whole house gas and electric use as well as heating, cooling, hot water, major appliances and indoor and outdoor conditions. One home built to builder standard practice served as the control, while the other homes demonstrated high performance features. Utility peak electric load comparisons of these dual-fuel homes provide an assessment of envelope and equipment improvements. The control home used natural gas for space and water heating only, while the improved homes had gas heating and major appliances with the exception of a high efficiency heat pump in one home. Data collection began in July of 2009 and continued through April of 2011. Energy ratings for the homes yielded E-Scales (aka HERS indices) of 86 for the control home, 54 for one improved home and 37 for the other home which has a 2.4kW photovoltaic array.

  9. Biomimetic Chalcogels for Solar Fuel Catalysis | ANSER Center...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Biomimetic Chalcogels for Solar Fuel Catalysis Home > Research > ANSER Research Highlights > Biomimetic Chalcogels for Solar Fuel Catalysis...

  10. When Function Follows Form: Plastic Solar Cells | ANSER Center...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    When Function Follows Form: Plastic Solar Cells Home > Research > ANSER Research Highlights > When Function Follows Form: Plastic Solar Cells...

  11. California Solar Initiative- Low-Income Solar Water Heating Rebate Program

    Energy.gov [DOE]

    The program is only available to customers who currently heat their water with natural gas in the service territories of Pacific Gas and Electric Company (PG&E), San Diego Gas & Electric ...

  12. Performance comparison of several passive solar water heaters

    SciTech Connect

    Stickney, B.L.; Nagy, C.

    1980-01-01

    Three .076 m/sup 3/ (20 gal.) batch water heaters were constructed for the purpose of side by side testing. The test models included an Inverted Batch Water Heater, a Greenhouse Integrated Skylight Heater, and a typical Breadbox Batch Heater. These designs were chosen because of their low initial cost, simple construction, ease of freeze protection, uncomplicated operation and heating effectiveness. The results of our testing show that our test models produced 35 to 70/sup 0/C (95 to 158/sup 0/F) average water temperatures with average collection efficiencies of about 34%. Materials costs for each of these systems were $200 to $400. These systems were tested side by side during periods of both low and high thermal demand, both with and without a selective surface foil on the absorber surfaces.

  13. DOE Zero Energy Ready Home Case Study: Healthy Efficient Homes - Spirit Lake, Iowa

    SciTech Connect

    none,

    2014-11-01

    This case study describes a DOE Zero Energy Ready Home in Spirit Lake, Iowa, that scored HERS 41 without PV and HERS 28 with PV. This 3,048 ft2 custom home has advanced framed walls filled with 1.5 inches closed-cell spray foam, a vented attic with spray foam-sealed top plates and blown fiberglass over the ceiling deck. R-23 basement walls are ICF plus two 2-inch layers of EPS. The house also has a mini-split heat pump, fresh air fan intake, and a solar hot water heater.

  14. DOE Zero Energy Ready Home: Healthy Efficient Homes- Spirit Lake, Iowa

    Energy.gov [DOE]

    Case study of a DOE Zero Energy Ready Home in Spirit Lake, Iowa, that scored HERS 41 without PV and HERS 28 with PV. This 3,048 ft2 custom home has advanced framed walls filled with 1.5 inches closed-cell spray foam, a vented attic with spray foam-sealed top plates and blown fiberglass over the ceiling deck. R-23 basement walls are ICF plus two 2-inch layers of EPS. The house also has a mini-split heat pump, fresh air fan intake, and a solar hot water heater.

  15. DOE Zero Energy Ready Home Case Study: Near Zero Maine Home II - Vassalboro, Maine

    SciTech Connect

    none,

    2014-11-01

    This case study describes a DOE Zero Energy Ready home in Vassalboro, Maine, that scored HERS 35 without PV and HERS 11 with PV. This 1,200 ft2 home has 10.5-inch-thick double-walls with 3 layers of mineral wool batt insulation, an R-20 insulated slab, 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.

  16. Knox County Detention Facility Goes Solar for Heating Water

    Energy.gov [DOE]

    Hot water demand soars at the six-building Knox County Detention Facility in Tennessee. It's open 24/7 with 1,036 inmate beds and 4,500 meals served daily—and don't forget the laundry.

  17. DOE Zero Energy Ready Home Efficient Hot Water Distribution I-- What's At Stake Webinar (Text Version)

    Energy.gov [DOE]

    Below is the text version of the webinar, Efficient Hot Water Distribution I -- What's At Stake, presented in January 2014.

  18. The elimination of the reverse circulation in thermosiphon solar water heaters

    SciTech Connect

    Prapas, D.E.; Sotiropoulos, B.A. )

    1991-01-01

    Thermosiphon solar water heaters (TSWH), employing either closed or open collector loops, are widely used today to cover a substantial part of the hot water needs, mostly in residential small scale applications. Their cost is lower in comparison to pumped systems, because no pumps, controls etc. are required. However, the storage tank has to be mounted above the collector in order to promote the thermosiphon flow; this could be a serious drawback in some applications. An undesirable characteristic of TSWH is the reverse circulation (RC) of the working liquid when the temperature of the collector is lower than that of the storage tank. The causes of reverse circulation in thermosyphon solar water heaters, the geometry of the systems, and the affects of nocturnal radiative cooling of the collector are discussed. A means of interconnecting collector and tank to drastically reduce reverse circulation is presented.

  19. NREL: Innovation Impact - Solar

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Energy Menu Home Home Solar Solar Wind Wind Analysis Analysis Bioenergy Bioenergy Buildings Buildings Transportation Transportation Manufacturing Manufacturing Energy Systems Integration Energy Systems Integration What is a quantum dot? Close Quantum dots are tiny spheres of semiconductor material measuring only about 2-10 billionths of a meter in diameter. Quantum dots are a leading candidate for a third generation of solar-cell technologies. Close Achieving significant gains in solar

  20. solar

    National Nuclear Security Administration (NNSA)

    2%2A en Solar power purchase for DOE laboratories http:nnsa.energy.govmediaroompressreleasessolarpower

  1. Solar heating, cooling and domestic hot water system installed at Columbia Gas System Service Corp. , Columbus, Ohio. Final report

    SciTech Connect

    1980-11-01

    The Solar Energy System located at the Columbia Gas Corporation, Columbus, Ohio, has 2978 ft/sup 2/ of Honeywell single axis tracking, concentrating collectors and provides solar energy for space heating, space cooling and domestic hot water. A 1,200,000 Btu/h Bryan water-tube gas boiler provides hot water for space heating. Space cooling is provided by a 100 ton Arkla hot water fired absorption chiller. Domestic hot water heating is provided by a 50 gallon natural gas domestic storage water heater. Extracts are included from the site files, specification references, drawings, installation, operation and maintenance instructions.

  2. Solar and Wind Rights | Department of Energy

    Energy.gov [DOE] (indexed site)

    - Passive Solar Water Heat Solar Space Heat Solar Thermal Electric Solar Thermal Process Heat Solar Photovoltaics Wind (All) Wind (Small) Program Info Sector Name State State...

  3. Solar Easements & Rights Laws | Department of Energy

    Energy.gov [DOE] (indexed site)

    Nonprofit Residential Schools State Government Federal Government Savings Category Solar - Passive Solar Water Heat Solar Space Heat Solar Thermal Electric Solar Thermal Process...

  4. Vaillant Solar Systems | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Zip: 92075 Sector: Solar Product: California-based solar company specializing in solar water heating, solar pool heating and solar space heating systems for residential and...

  5. Bryan Texas Utilities- SmartHOME Program

    Energy.gov [DOE]

    The Bryan Texas Utilities (BTU) SmartHOME Programs offers incentives to owners of single- and multi-family homes for insulation, windows, and solar screens.The incentive amount may not be less than...

  6. Modeling the Impacts of Solar Distributed Generation on U.S. Water Resources

    SciTech Connect

    Amanda, Smith; Omitaomu, Olufemi A; Jaron, Peck

    2015-01-01

    Distributed electric power generation technologies typically use little or no water per unit of electrical energy produced; in particular, renewable energy sources such as solar PV systems do not require cooling systems and present an opportunity to reduce water usage for power generation. Within the US, the fuel mix used for power generation varies regionally, and certain areas use more water for power generation than others. The need to reduce water usage for power generation is even more urgent in view of climate change uncertainties. In this paper, we present an example case within the state of Tennessee, one of the top four states in water consumption for power generation and one of the states with little or no potential for developing centralized renewable energy generations. The potential for developing PV generation within Knox County, Tennessee, is studied, along with the potential for reducing water withdrawal and consumption within the Tennessee Valley stream region. Electric power generation plants in the region are quantified for their electricity production and expected water withdrawal and consumption over one year, where electrical generation data is provided over one year and water usage is modeled based on the cooling system(s) in use. Potential solar PV electrical production is modeled based on LiDAR data and weather data for the same year. Our proposed methodology can be summarized as follows: First, the potential solar generation is compared against the local grid demand. Next, electrical generation reductions are specified that would result in a given reduction in water withdrawal and a given reduction in water consumption, and compared with the current water withdrawal and consumption rates for the existing fuel mix. The increase in solar PV development that would produce an equivalent amount of power, is determined. In this way, we consider how targeted local actions may affect the larger stream region through thoughtful energy development

  7. Solar Electric Propulsion

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ... Sciences Applications National Solar Thermal Test Facility Nuclear Energy ...

  8. Concentrating Solar Power (CSP)

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ... Sciences Applications National Solar Thermal Test Facility Nuclear Energy ...

  9. Concentrating Solar Power

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ... Sciences Applications National Solar Thermal Test Facility Nuclear Energy ...

  10. Reliable solar: powering communities

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    landfill to house two solar arrays connected to a battery system, creating enough stable power to energize 2,000 homes in the community. The study includes a "smart home" ...

  11. A Fully Integrated Nanosystem of Semiconductor Nanowires for Direct Solar Water Splitting

    SciTech Connect

    Liu, Chong; Tang, Jinyao; Chen, HaoMing; Liu, Bin; Yang, Peidong

    2013-02-21

    Artificial photosynthesis, the biomimetic approach to converting sunlight?s energy directly into chemical fuels, aims to imitate nature by using an integrated system of nanostructures, each of which plays a specific role in the sunlight-to-fuel conversion process. Here we describe a fully integrated system of nanoscale photoelectrodes assembled from inorganic nanowires for direct solar water splitting. Similar to the photosynthetic system in a chloroplast, the artificial photosynthetic system comprises two semiconductor light absorbers with large surface area, an interfacial layer for charge transport, and spatially separated cocatalysts to facilitate the water reduction and oxidation. Under simulated sunlight, a 0.12percent solar-to-fuel conversion efficiency is achieved, which is comparable to that of natural photosynthesis. The result demonstrates the possibility of integrating material components into a functional system that mimics the nanoscopic integration in chloroplasts. It also provides a conceptual blueprint of modular design that allows incorporation of newly discovered components for improved performance.

  12. Experience with thermal storage in tanks of stratified water for solar heating and load management

    SciTech Connect

    Wildin, M.W.; Witkofsky, M.P.; Noble, J.M.; Hopper, R.E.; Stromberg, P.G.

    1982-01-01

    Results have been obtained for performance of stratified tanks of water used to store heating and cooling capacity in a 5574 m/sup 2/ university building. The major sources of energy used to charge the heated tanks were solar energy, obtained via collectors on the roof of the building, and excess heat recovered from the interior of the building via thermal storage and electric-driven heat pump/chillers. Through stratification of the water in the storage tanks and an appropriate system operating strategy, 40 percent of the building's total heating needs were supplied by solar energy during the first four months of 1981. Month-long thermal efficiencies of the storage array ranging from 70 percent during the heating season to nearly 90 percent during the cooling season, were measured. Work is underway to improve the performance of thermal storage.

  13. Center for Solar Fuels (UNC) | U.S. DOE Office of Science (SC)

    Office of Science (SC)

    Solar Fuels (UNC) Energy Frontier Research Centers (EFRCs) EFRCs Home Centers EFRC External Websites Research Science Highlights News & Events Publications History Contact BES Home Centers Center for Solar Fuels (UNC) Print Text Size: A A A FeedbackShare Page UNC Header Director Thomas Meyer Lead Institution University of North Carolina Year Established 2009 Mission To conduct research on dye sensitized photoelectrosynthesis cells (DSPECs) for water splitting and tandem cells for the

  14. DOE ZERH Webinar: Energy-- and Water-- Efficiency in the DOE Zero Energy Ready Home Program

    Energy.gov [DOE]

    In recent years, challenges such as an aging infrastructure and drought have led to rapidly rising water rates and an increased focus on (sometimes strict) conservation measures. In this session...

  15. Performance of Gas-fired Water Heaters in a 10-home Field Study

    Energy.gov [DOE]

    This presentation was given at the Summer 2012 DOE Building America meeting on July 25, 2012, and addressed the question "Are high-efficiency hot water heating systems worth the cost?"

  16. Home Heating Systems | Department of Energy

    Office of Environmental Management (EM)

    separately, many homes use the following approaches: Active Solar Heating Uses the sun to heat either air or liquid and can serve as a supplemental heat source. Electric...

  17. Sandia Energy - Sandia Tool Determines Value of Solar Photovoltaic...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Tool Determines Value of Solar Photovoltaic Power Systems Home Renewable Energy Energy Partnership News News & Events Photovoltaic Solar Sandia Tool Determines Value of Solar...

  18. Sandia Energy - Solar Energy Grid Integration Systems (SEGIS...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Energy Grid Integration Systems (SEGIS) Home Stationary Power Energy Conversion Efficiency Solar Energy Photovoltaics Grid Integration Solar Energy Grid Integration Systems...

  19. Plastic Solar Cells See Bright Future | ANSER Center | Argonne...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Plastic Solar Cells See Bright Future Home > News & Events > Plastic Solar Cells See Bright Future Plastic Solar Cells See Bright Future Evanston, Ill---Energy consumption is ...

  20. Solar-heated hot water instrumentation project for EPRI Headquarters complex, Palo Alto, California. Final report

    SciTech Connect

    Whitehouse, H.T.; Ortiz, P.

    1981-01-01

    A data acquisition and analysis effort charted the performance of a solar-assisted, hot water preheat system supplying a portion of the service water needs at the EPRI Headquarters complex in Palo Alto, California. The project commenced in June of 1978, with active data acquisition transpiring over a 12-month period from December 1, 1978, to November 30, 1979. Detailed load and performance data for the system are presented, the merits of the data acquisition system employed are discussed, and recommendations for future monitoring efforts are provided.

  1. Revisions to the SRCC Rating Process for Solar Water Heaters: Preprint

    SciTech Connect

    Burch, J.; Huggins, J.; Long, S.; Thornton, J.

    2012-06-01

    In the United States, annual performance ratings for solar water heaters are computed with component-based simulation models driven by typical meteorological year weather and specified water draw. Changes in the process are being implemented to enhance credibility through increased transparency and accuracy. Changes to the process include using a graphical rather than text-based model-building tool, performing analytical tests on all components and systems, checking energy balances on every component, loop, and system at every time step, comparing the results to detect outliers and potential errors, and documenting the modeling process in detail. Examples of changes in ratings are shown, along with analytical and comparative testing results.

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

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

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

  3. Solar House in Milton, Massachusetts

    Energy.gov [DOE]

    This photograph features a DeSantis home that sports an 8.4-kilowatt photovoltaic (PV) solar electric system manufactured by Evergreen Solar of Marlboro, Massachusetts, and installed by groSolar of...

  4. DOE Zero Ready Home Case Study: Clifton View Homes, Kaltenbach...

    Energy Saver

    and solar-ready components for low or no utility bills in a quality home that will last for generations to come. ... In 2011, Clifton built his first house that could power both ...

  5. Measure Guideline. Heat Pump Water Heaters in New and Existing Homes

    SciTech Connect

    Shapiro, Carl; Puttagunta, Srikanth; Owens, Douglas

    2012-02-01

    This Building America Measure Guideline is intended for builders, contractors, homeowners, and policy-makers. This document is intended to explore the issues surrounding heat pump water heaters (HPWHs) to ensure that homeowners and contractors have the tools needed to appropriately and efficiently install HPWHs

  6. National Solar Water Heater Workshop Present at DOE Region V meeting for managers of State Energy Extension Service and State Energy Conservation Plan, March 18-19, 1981

    SciTech Connect

    Mumma, S.A.; Marinello, M.G.

    1981-01-01

    After a brief description of the National Solar Water Heater Workshop and some comments by users of the solar water heater, the hardware supplier handbook is presented. The performance expected of a hardware supplier is described, solar system components and their specifications are listed, and information is provided to assist the hardware supplier in obtaining necessary materials. (LEW)

  7. Home | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    Manojnirgudkar 20 weeks 3 days ago Manojnirgudkar Buildings blog Printed decorative solar panels could become part of our homes and offices Dc 29 weeks 5 days ago Dc answer...

  8. DOE Zero Energy Ready Home Case Study, Nexus EnergyHomes, Frederick...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    DOE Zero Energy Ready Home Case Study, Nexus EnergyHomes, Frederick, MD, Production This urban infill community features a package of SIP walls, geothermal heat pumps, solar PV, ...

  9. DOE Zero Energy Ready Home Case Study: Clifton View Homes, Whidbey...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    HERS 37 without PV or HERS -13 with 10 kW PV, enough to power the home and an electric car. ... The home has a ground-source heat pump provides radiant floor heat plus passive solar ...

  10. DOE Zero Energy Ready Home Case Study 2013: Clifton View Homes...

    Energy Saver

    Clifton, founder of Clifton View Homes, achieved an impressive Home Energy Rating System (HERS) score of 34 (without solar panels) on a two-story structure completed in July 2011 ...

  11. Solar Water Heater Roadmap Leads Path to Market Expansion (Fact Sheet), Highlights in

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Soft Costs » Solar Training Network Solar Training Network Solar Training Network The Solar Training Network addresses a critical need for high-quality, local, accessible training in solar installation and related skills. It was established under the Solar Training and Education for Professionals (STEP) funding program in 2016 and is administered by The Solar Foundation. The Network allows for greater connection between solar employers, trainers and training institutions, workforce investment

  12. Comparison of natural convection heat exchangers for solar water heating systems

    SciTech Connect

    Davidson, J.; Liu, W.

    1998-09-15

    Thermosyphon heat exchangers are used in indirect solar water heating systems to avoid using a pump to circulate water from the storage tank to the heat exchanger. In this study, the authors consider the effect of heat exchanger design on system performance. They also compare performance of a system with thermosyphon flow to the same system with a 40W pump in the water loop. In the first part of the study, the authors consider the impact of heat exchanger design on the thermal performance of both one- and two-collector solar water heaters. The comparison is based on Solar Rating and Certification Corporation (SRCC) OG300 simulations. The thermosyphon heat exchangers considered are (1) a one-pass, double wall, 0.22 m{sup 2}, four tube-in-shell heat exchanger manufactured by AAA Service and Supply, Inc., (the Quad-Rod); (2) a two-pass, double wall, 0.2 m{sup 2}, tube-in-shell made by Heliodyne, Inc., but not intended for commercial development; (3) a one-pass, single wall, 0.28 m{sup 2}, 31 tube-in-shell heat exchanger from Young Radiator Company, and (4) a one-pass single-wall, 0.61 m{sup 2}, four coil-in-shell heat exchanger made by ThermoDynamics Ltd. The authors compare performance of the systems with thermosyphon heat exchangers to a system with a 40 W pump used with the Quad-Rod heat exchanger. In the second part of the study, the effects of reducing frictional losses through the heat exchanger and/or the pipes connecting the heat exchanger to the storage tank, and increasing heat transfer area are evaluated in terms of OG300 ratings.

  13. CAES Home

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    CAES Home Home About Us Contact Information Our CAES Building FAQs Affiliated Centers Research Core Capabilities Laboratories and Equipment Technology Transfer Visualization CAVE...

  14. CAES Home

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    View all events >> x CAES Home Home About Us Contact Information Our CAES Building FAQs Affiliated Centers Research Core Capabilities Laboratories and Equipment Technology Transfer...

  15. CAES Home

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    User ID: Password: Log In Forgot your password? CAES Home Home About Us Contact Information Our CAES Building FAQs Affiliated Centers Research Core Capabilities Laboratories and...

  16. Solar space- and water-heating system at Stanford University. Final report

    SciTech Connect

    Not Available

    1980-05-01

    Application of an active hydronic domestic hot water and space heating solar system for the Central Food Services Building is discussed. The closed-loop drain-back system is described as offering dependability of gravity drain-back freeze protection, low maintenance, minimal costs, and simplicity. The system features an 840 square-foot collector and storage capacity of 1550 gallons. The acceptance testing and the predicted system performance data are briefly described. Solar performance calculations were performed using a computer design program (FCHART). Bidding, costs, and economics of the system are reviewed. Problems are discussed and solutions and recommendations given. An operation and maintenance manual is given in Appendix A, and Appendix B presents As-built Drawings. (MCW)

  17. Purchasing Energy-Efficient Residential Whole-Home Gas Tankless...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Whole-Home Gas Tankless Water Heaters Purchasing Energy-Efficient Residential Whole-Home Gas Tankless Water Heaters The Federal Energy Management Program (FEMP) provides ...

  18. Project Profile: Flexible Assembly Solar Technology | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Concentrating Solar Power Project Profile: Flexible Assembly Solar Technology Project ... research that are in progress. SunShot Home About the SunShot Initiative Concentrating ...

  19. "Fundamental Challenges in Solar Energy Conversion" workshop...

    Office of Science (SC)

    Fundamental Challenges in Solar Energy Conversion" workshop hosted by LMI-EFRC Energy ... Publications History Contact BES Home 06.02.10 "Fundamental Challenges in Solar Energy ...

  20. "Approaches to Ultrahigh Efficiency Solar Energy Conversion"...

    Office of Science (SC)

    "Approaches to Ultrahigh Efficiency Solar Energy Conversion" Webinar Energy Frontier ... Publications History Contact BES Home 03.07.13 "Approaches to Ultrahigh Efficiency Solar ...

  1. Fuel from Bacteria, CO2, Water, and Solar Energy: Engineering a Bacterial Reverse Fuel Cell

    SciTech Connect

    2010-07-01

    Electrofuels Project: Harvard is engineering a self-contained, scalable Electrofuels production system that can directly generate liquid fuels from bacteria, carbon dioxide (CO2), water, and sunlight. Harvard is genetically engineering bacteria called Shewanella, so the bacteria can sit directly on electrical conductors and absorb electrical current. This current, which is powered by solar panels, gives the bacteria the energy they need to process CO2 into liquid fuels. The Harvard team pumps this CO2 into the system, in addition to water and other nutrients needed to grow the bacteria. Harvard is also engineering the bacteria to produce fuel molecules that have properties similar to gasoline or diesel fuelmaking them easier to incorporate into the existing fuel infrastructure. These molecules are designed to spontaneously separate from the water-based culture that the bacteria live in and to be used directly as fuel without further chemical processing once theyre pumped out of the tank.

  2. Solar Policy Environment: Sacramento

    Office of Energy Efficiency and Renewable Energy (EERE)

    The City of Sacramento and the greater Sacramento region is the home of a long standing history of commitment to solar. Sacramento Solar Access seeks to further widespread adoption of solar energy by addressing current market barriers and preparing, through design guidelines and education, the infrastructure that will optimize solar production in the future.

  3. Candidate for solar power : a novel desalination technology for coal bed methane produced water.

    SciTech Connect

    Hanley, Charles J.; Andelman, Marc; Hightower, Michael M.; Sattler, Allan Richard

    2005-03-01

    Laboratory and field developments are underway to use solar energy to power a desalination technology - capacitive deionization - for water produced by remote Coal Bed Methane (CBM) natural gas wells. Due to the physical remoteness of many CBM wells throughout the Southwestern U.S., as shown in Figure 1, this approach may offer promise. This promise is not only from its effectiveness in removing salt from CBM water and allowing it to be utilized for various applications, but also for its potentially lower energy consumption compared to other technologies, such as reverse osmosis. This, coupled with the remoteness (Figure 1) of thousands of these wells, makes them more feasible for use with photovoltaic (solar, electric, PV) systems. Concurrent laboratory activities are providing information about the effectiveness and energy requirements of each technology under various produced water qualities and water reuse applications, such as salinity concentrations and water flows. These parameters are being used to driving the design of integrated PV-powered treatment systems. Full-scale field implementations are planned, with data collection and analysis designed to optimize the system design for practical remote applications. Early laboratory studies of capacitive deionization have shown promise that at common CBM salinity levels, the technology may require less energy, is less susceptible to fouling, and is more compact than equivalent reverse osmosis (RO) systems. The technology uses positively and negatively charged electrodes to attract charged ions in a liquid, such as dissolved salts, metals, and some organics, to the electrodes. This concentrates the ions at the electrodes and reduces the ion concentrations in the liquid. This paper discusses the results of these laboratory studies and extends these results to energy consumption and design considerations for field implementation of produced water treatment using photovoltaic systems.

  4. Building America Efficient Solutions for Existing Homes Case Study: Habitat

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    for Humanity of Palm Beach County, Lake Worth, Florida | Department of Energy Habitat for Humanity of Palm Beach County, Lake Worth, Florida Building America Efficient Solutions for Existing Homes Case Study: Habitat for Humanity of Palm Beach County, Lake Worth, Florida PNNL and Florida Solar Energy Center worked with Habitat for Humanity of Palm Beach County to upgrade an empty 1996 home with a 14.5 SEER AC, heat pump water heater, CFLs, more attic insulation, and air sealing to cut

  5. Outdoor Solar Lighting | Department of Energy

    Energy.gov [DOE] (indexed site)

    on Outdoor Lighting Solar panels are a great way to produce clean energy at home | Photo courtesy of Stefano Paltera, U.S. Department of Energy. Harnessing Solar Energy at Home...

  6. Solar-thermal Water Splitting Using the Sodium Manganese Oxide Process & Preliminary H2A Analysis

    SciTech Connect

    Francis, Todd M; Lichty, Paul R; Perkins, Christopher; Tucker, Melinda; Kreider, Peter B; Funke, Hans H; Lewandowski, A; Weimer, Alan W

    2012-10-24

    There are three primary reactions in the sodium manganese oxide high temperature water splitting cycle. In the first reaction, Mn2O3 is decomposed to MnO at 1,500°C and 50 psig. This reaction occurs in a high temperature solar reactor and has a heat of reaction of 173,212 J/mol. Hydrogen is produced in the next step of this cycle. This step occurs at 700°C and 1 atm in the presence of sodium hydroxide. Finally, water is added in the hydrolysis step, which removes NaOH and regenerates the original reactant, Mn2O3. The high temperature solar-driven step for decomposing Mn2O3 to MnO can be carried out to high conversion without major complication in an inert environment. The second step to produce H2 in the presence of sodium hydroxide is also straightforward and can be completed. The third step, the low temperature step to recover the sodium hydroxide is the most difficult. The amount of energy required to essentially distill water to recover sodium hydroxide is prohibitive and too costly. Methods must be found for lower cost recovery. This report provides information on the use of ZnO as an additive to improve the recovery of sodium hydroxide.

  7. DOE Zero Energy Ready Home Case Study: Southeast Volusia Habitat for Humanity, Edgewater, FL

    SciTech Connect

    none,

    2014-09-01

    This home garnered an award in the Affordable Builder category of the 2014 Housing Innovation Awards, and features 2x4 walls with fiberglass batt inside plus R-3 rigid foam on the exterior, ENERGY STAR lighting, appliances, and ceiling fans, a solar water heater, an energy recovery ventilation, and a high efficiency heat pump.

  8. Building America Whole-House Solutions for New Homes: John Wesley Miller, Tucson, Arizona

    Energy.gov [DOE]

    Case study of John Wesley Miller Companies, who worked with the NAHBRC to build two net-zero energy homes with foam-sheathed masonry walls, low-E windows 2.9 ACH50 air sealing, transfer grilles, ducts in insulated attic, PV, and solar water heating.

  9. DOE ZERH Webinar: Updates to the DOE Zero Energy Ready Home Specs --

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Revision 05 | Department of Energy Updates to the DOE Zero Energy Ready Home Specs -- Revision 05 DOE ZERH Webinar: Updates to the DOE Zero Energy Ready Home Specs -- Revision 05 In the year since DOE last updated the DOE Zero Energy Ready Home specs, we've continued to track our partner feedback and other industry issues. This brings us to the release of Revision 05, which changes the solar hot water ready provisions to "recommended," incorporates a phase-in period for the new

  10. Moving Toward Zero Energy Homes: Armory Park del Sol, Tucson, Arizona

    SciTech Connect

    2003-12-01

    Fact sheet describes the energy efficient and solar energy features of the Armory Park del Sol Zero Energy Home, participant in the Zero Energy Homes initiative.

  11. DOE Zero Energy Ready Home Case Study: Carl Franklin Homes, L...

    Energy.gov [DOE] (indexed site)

    heat pump 15.5 SEER, and tankless hot water. DOE Zero Energy Ready Home Case Study: Carl Franklin Homes, L.C.Green Extreme Homes, CDC, Garland TX (1.16 MB) More Documents & ...

  12. DOE Tour of Zero: The 2014 Model Home by Cobblestone Homes |...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    home. 4 of 5 The cabinets and other board products used do not include formaldehyde contaminants. 5 of 5 On-demand hot water pumps speed hot water to the home's water-saving...

  13. An Update of the Analytical Groundwater Modeling to Assess Water Resource Impacts at the Afton Solar Energy Zone

    SciTech Connect

    Quinn, John J.; Greer, Christopher B.; Carr, Adrianne E.

    2014-10-01

    The purpose of this study is to update a one-dimensional analytical groundwater flow model to examine the influence of potential groundwater withdrawal in support of utility-scale solar energy development at the Afton Solar Energy Zone (SEZ) as a part of the Bureau of Land Management’s (BLM’s) Solar Energy Program. This report describes the modeling for assessing the drawdown associated with SEZ groundwater pumping rates for a 20-year duration considering three categories of water demand (high, medium, and low) based on technology-specific considerations. The 2012 modeling effort published in the Final Programmatic Environmental Impact Statement for Solar Energy Development in Six Southwestern States (Solar PEIS; BLM and DOE 2012) has been refined based on additional information described below in an expanded hydrogeologic discussion.

  14. Environmental Evaluation for Installation of Solar Arrays at San Jose/Santa Clara Water Pollution Control Plant

    Office of Energy Efficiency and Renewable Energy (EERE)

    The purpose of this technical memorandum (TM) is to review the options to develop a potential solar array development (Project) within or adjacent to western burrowing owl (Athene cunicularia) habitat in the buffer lands that surround the San José/Santa Clara Water Pollution Control Plant (WPCP) and to determine if there is a ground-mounted solar photovoltaic (PV) configuration that would enable a workable co-existence between the burrowing owl habitat and the PV arrays.

  15. Development of a gas backup heater for solar domestic hot-water systems. Final report, April 1978-April 1980

    SciTech Connect

    Morrison, D.J.; Grunes, H.E.; de Winter, F.; Armstrong, P.R.

    1980-06-01

    A comprehensive program was undertaken to develop a unique gas fired backup for solar domestic hot water systems. Detailed computer design tools were written. A series of heat transfer experiments were performed to characterize the performance of individual components. A full scale engineering prototype, including the solar preheat tank and solar heat exchanger, was designed, fabricated and subjected to limited testing. Firing efficiency for the backup system was found to be 81.4% at a firing rate of 50,000 Btu/h. Long term standby losses should be negligible.

  16. Modeling the performance of small capacity lithium bromide-water absorption chiller operated by solar energy

    SciTech Connect

    Saman, N.F.; Sa`id, W.A.D.K.

    1996-12-31

    An analysis of the performance of a solar operated small capacity (two-ton) Lithium Bromide-Water (LiBr-H{sub 2}O) absorption system is conducted. The analysis is based on the first law of thermodynamics with lithium bromide as the absorbent and water as the refrigerant. The effect of various parameters affecting the machine coefficient of performance under various operating conditions is reported. Coefficient of performance of up to 0.8 can be obtained using flat plate solar collectors with generator temperatures in the range of 80--95 C (176--203 F). Liquid heat exchangers with effectiveness based on an NTU of the order of one would be a good design choice. The chiller can save approximately 3,456 kWh/yr per a two-ton unit, and it will reduce emissions by 19 lb of NO{sub x}, 5,870 lb of CO{sub 2}, and 16 lb of SO{sub x} per year per machine.

  17. Solar Photovoltaic Success Stories - Energy Innovation Portal

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Panel Design Ideas for Your Home Solar Panel Design Ideas for Your Home June 8, 2016 - 5:08pm Addthis These examples of building integrated photovoltaic panels are like solar eye candy. All images from U.S. Department of Energy Solar Decathlon These examples of building integrated photovoltaic panels are like solar eye candy. All images from U.S. Department of Energy Solar Decathlon Alexis Powers Communications Specialist at the National Renewable Energy Laboratory Solar is not just for

  18. American Recovery and Reinvestment Act (ARRA) Federal Energy Management Program Technical Assistance Project 281 Solar Hot Water Application Assessment for U.S. Army IMCOM-Southeast Region

    SciTech Connect

    Russo, Bryan J.; Chvala, William D.

    2010-09-30

    The Energy Independence and Security Act of 2007 requires installations (EISA) to install solar systems of sufficient capacity to provide 30% of service hot water in new construction and renovations where cost-effective. However, installations are struggling with how to implement solar hot water, and while several installations are installing solar hot water on a limited basis, paybacks remain long. Pacific Northwest National Laboratory (PNNL) was tasked to address this issue to help determine how best to implement solar hot water projects. This documents discusses the results of that project.

  19. DOE Zero Energy Ready Home Case Study: John Hubert Associates — EXIT-0 House, North Cape May, NJ

    SciTech Connect

    none,

    2014-09-01

    This house is the first DOE Zero Energy Ready Home for this builder and won a Custom Builder award in the 2014 Housing Innovation Awards. The 1,871-ft2 home features advanced-framed above-grade walls with R-21 fiberglass batt plus an R-3.6-insulated coated OSB sheathing, R-18 rigid-foam-insulated crawlspace walls, solar water heating, a high-efficiency heat pump, an HRV, and mostly LED lighting.

  20. Chemodynamical deuterium fractionation in the early solar nebula: The origin of water on earth and in asteroids and comets

    SciTech Connect

    Albertsson, T.; Semenov, D.; Henning, Th.

    2014-03-20

    Formation and evolution of water in the solar system and the origin of water on Earth constitute one of the most interesting questions in astronomy. The prevailing hypothesis for the origin of water on Earth is by delivery through water-rich small solar system bodies. In this paper, the isotopic and chemical evolution of water during the early history of the solar nebula, before the onset of planetesimal formation, is studied. A gas-grain chemical model that includes multiply deuterated species and nuclear spin-states is combined with a steady-state solar nebula model. To calculate initial abundances, we simulated 1 Myr of evolution of a cold and dark TMC-1-like prestellar core. Two time-dependent chemical models of the solar nebula are calculated over 1 Myr: (1) a laminar model and (2) a model with two-dimensional (2D) turbulent mixing. We find that the radial outward increase of the H{sub 2}O D/H ratio is shallower in the chemodynamical nebular model than in the laminar model. This is related to more efficient defractionation of HDO via rapid gas-phase processes because the 2D mixing model allows the water ice to be transported either inward and thermally evaporated or upward and photodesorbed. The laminar model shows the Earth water D/H ratio at r ? 2.5 AU, whereas for the 2D chemodynamical model this zone is larger, r ? 9 AU. Similarly, the water D/H ratios representative of the Oort-family comets, ?2.5-10 10{sup 4}, are achieved within ?2-6 AU and ?2-20 AU in the laminar and the 2D model, respectively. We find that with regards to the water isotopic composition and the origin of the comets, the mixing model seems to be favored over the laminar model.