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Library

This library contains research reports produced by the Building America program and other building science resources used to support this Solution Center. The materials cover both new construction and existing homes. Use the search box and/or the filters to explore hundreds of residential building resources. Access to some references not produced by Building America may require purchase from the publisher. Documents are listed alphabetically. While we continually update our database, links may have changed since posting. Please contact our webmaster if you find broken links.

Showing results 1 - 25 of 25

HPWH Installation and Design Concepts for Low-Rise Multifamily Buildings

Author(s)
Larson Ben
Organization(s)
Larson Energy Research,
Northwest Energy Efficiency Alliance,
NREL
Publication Date
Report describing the identification of barriers and proposed practical solutions for the design, installation, and market adoption of heat pump water heaters in new low-rise multifamily housing, focusing on studio and one-bedroom units.

Multifamily Heat Pump Water Heater Evaluation

Author(s)
Alliance for Residential Building Innovation,
National Renewable Energy Laboratory
Organization(s)
ARBI,
NREL
Publication Date
Study in which a central heat pump water heater system was monitored in detail and used to create a model for assessing similar systems in various climates.

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

Author(s)
Springer David,
Seitzler Matt,
Backman Christine,
Weitzel Elizabeth
Organization(s)
Alliance for Residential Building Innovation,
ARBI,
National Renewable Energy Laboratory,
NREL,
Davis Energy Group,
U.S. Department of Energy,
DOE
Publication Date
Report on investigating the effectiveness of using solar thermal water heaters to address heat losses from piping while recirculating water in multifamily buildings.

Overheating in Hot-Water and Steam-Heated Multifamily Buildings

Author(s)
Dentz Jordan,
Henderson Hugh,
Podorson David
Organization(s)
Advanced Residential Integrated Energy Solutions,
ARIES,
Levy Partnership,
National Renewable Energy Laboratory,
NREL,
U.S. Department of Energy,
DOE
Publication Date
Report providing information to researchers, utility program managers, and building owners interested in controlling heating energy waste and improving resident comfort.

Validation of a Hot Water Distribution Model Using Laboratory and Field Data

Author(s)
Backman Christine,
Hoeschele Marc
Organization(s)
Alliance for Residential Building Innovation,
ARBI,
National Renewable Energy Laboratory,
NREL,
Davis Energy Group,
U.S. Department of Energy,
DOE
Publication Date
Research study comparing TRNSYS Type 604 pipe model against laboratory pipe heat loss test data and detailed field monitoring data.

Comparison of Advanced Residential Water Heating Technologies in the United States

Author(s)
Fang Xia,
Maguire Jeff,
Wilson Eric
Organization(s)
National Renewable Energy Laboratory,
NREL,
U.S. Department of Energy,
DOE
Publication Date
Research report providing a comparison of the most common residential water heating technologies to determine energy-efficient and cost-effective water heating technologies are when subjected to a variety of typical operating conditions.

Assessing the Energy Savings of Tankless Water Heater Retrofits in Public Housing

Author(s)
Dwiantoro Deny,
Walters R,
Ries R
Organization(s)
Building Energy Efficient Homes for America,
BEEHA,
National Renewable Energy Laboratory,
NREL,
U.S. Department of Energy,
DOE
Publication Date
Report describing methodology, analysis, and findings from a case study of a 110-unit retrofit of gas tankless water heaters in a hot/humid climate in Alachua County, Florida.

West Village Community: Quality Management Processes and Preliminary Heat Pump Water Heater Performance

Author(s)
Dakin Bill,
Backman Christine,
Hoeschele Marc,
German Alea
Organization(s)
ARBI,
Alliance for Residential Building Innovation,
National Renewable Energy Laboratory,
NREL,
Davis Energy Group
Publication Date
Report evaluating performance/efficiency of central heat pump water heaters and quality assurance/quality control processes in system startup, operation and efficiency program participation.

Hot Water Distribution System Model Enhancements

Author(s)
Hoeschele Marc,
Weitzel Elizabeth
Organization(s)
Alliance for Residential Building Innovation,
ARBI,
National Renewable Energy Laboratory,
NREL,
Davis Energy Group
Publication Date
Report on a project that enhanced the HWSIM distribution system model to more accurately model pipe heat transfer.

Retrofitting Combined Space and Water Heating Systems: Laboratory Tests

Author(s)
Bohac Dave,
Schoenbauer Ben,
Hewett Martha,
Huelman Patrick H
Organization(s)
NorthernSTAR Building America Partnership,
NorthernSTAR,
National Renewable Energy Laboratory,
NREL,
University of Minnesota,
UMIN
Publication Date
Report presenting results of a laboratory experiment studying combi systems as a mode to eliminate safety issues associated with natural draft appliances.

Measure Guideline: Transitioning to a Tankless Water Heater

Author(s)
Brozyna Kevin,
Rapport Ari
Organization(s)
Integrated Building and Construction Solutions,
IBACOS,
National Renewable Energy Laboratory,
NREL,
U.S. Department of Energy,
DOE
Publication Date
Document developed to help residential builders and retrofitters transition from tank-type water heaters to tankless water heaters.

Low-Cost Solar Water Heating Research and Development Roadmap

Author(s)
Hudon Kate,
Merrigan Tim,
Burch Jay,
Maguire Jeff
Organization(s)
National Renewable Energy Laboratory,
NREL
Publication Date
Report identifying the target market for solar water heaters and potential pathways and cost/performance targets that must be met for these systems to realize large energy savings.

A Realistic Hot Water Draw Specification for Rating Solar Water Heaters

Author(s)
Burch Jay,
Thornton Jeff
Organization(s)
National Renewable Energy Laboratory,
NREL,
Thermal Energy System Specialists,
TESS
Publication Date
Document outlining the current and the proposed draws and estimates typical ratings changes from draw specification changes for typical systems in four cities.

Revisions to the SRCC Rating Process for Solar Water Heaters

Author(s)
Burch Jay,
Huggins Jim,
Long Steven,
Thornton Jeff
Organization(s)
National Renewable Energy Laboratory,
NREL,
Solar Rating & Certification Corporation,
SRCC,
Thermal Energy System Specialists,
TESS
Publication Date
Document discussing changes in testing the annual performance ratings for solar water heaters.

Residential Ground Source Heat Pumps with Integrated Domestic Hot Water Generation: Performance Results from Long-Term Monitoring

Author(s)
Stecher Dave,
Allison Katherine
Organization(s)
Integrated Building and Construction Solutions,
IBACOS,
National Renewable Energy Laboratory,
NREL,
American Society of Heating Refrigerating and Air-Conditioning Engineers,
ASHRAE
Publication Date
Report discussing instrumentation methods and field operation characteristics of two GSHPs in test houses, including a comparison between the manufacturers listed COP values and the COPs calculated from field data.

Condensing Hybrid Water Heater Monitoring Field Evaluation

Author(s)
Maguire Jeff,
Earle Lieko,
Booten Chuck,
Hancock C E
Organization(s)
Mountain Energy Partnership,
National Renewable Energy Laboratory,
NREL
Publication Date
Report about a hybrid condensing water heater (thermal efficiency = 0.973, energy factor = 0.95) installed in an occupied home in Sacramento, California, and monitored for one year to determine the actual in situ efficiency.

Van Geet Off-Grid Home: An Integrated Approach to Energy Savings

Author(s)
National Renewable Energy Laboratory
Organization(s)
NREL
Publication Date
Report about a project with successful integration of numerous energy-conservation and renewable-energy features into a beautiful, comfortable, and very energy-efficient off-grid home.

Heat your Water with the Sun

Author(s)
National Renewable Energy Laboratory
Organization(s)
NREL
Publication Date
Provides consumers with general information on solar water heating systems and how to select a contractor.