A new version of the ENERGY-10 computer program simulates the performance of photovoltaic (PV) systems and evaluates a wide range of opportunities to improve energy efficiency in buildings. This paper describes two test cases in which the beta release of ENERGY-10 version 1.4 was used to evaluate energy efficiency and building-integrated photovoltaics (BIPV) for two federal building projects: an office and laboratory building at the Smithsonian Astrophysical Laboratory (SAO) in Hilo, Hawaii, and housing for visiting scientists at the Smithsonian Environmental Research Center in Edgewater, Maryland. The capabilities of the software, the design assistance provided by ENERGY-10, and a synopsis of results are given. Estimates of annual energy delivery by the five PV arrays of the SAO are compared to F-Chart to help inform a validation of ENERGY-10. Results indicate that, by simulating both the building electrical load and simultaneous PV performance for each hour of the year, ENERGY-10 facilitates a highly accurate, integrated analysis useful early in the design process. The simulation is especially useful in calculating the effect of PV on the building peak load, and associated demand cost savings.
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February 2003
Technical Papers
Analyzing Two Federal Building-Integrated Photovoltaics Projects Using ENERGY-10 Simulations
Andy Walker,
Andy Walker
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401-3393
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Doug Balcomb,
Doug Balcomb
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401-3393
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Gregory Kiss,
Gregory Kiss
Kiss+Cathcart Architects, 44 Court St., 12th Floor, Brooklyn, NY 11201
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Norm Weaver,
Norm Weaver
InterWeaver Consulting, PO Box 775444, Steamboat Springs, CO 80477
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Melinda Humphry Becker
Melinda Humphry Becker
Smithsonian Institution, 955 L’Enfant Plaza, Suite 3230, Washington, DC 20024
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Andy Walker
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401-3393
Doug Balcomb
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401-3393
Gregory Kiss
Kiss+Cathcart Architects, 44 Court St., 12th Floor, Brooklyn, NY 11201
Norm Weaver
InterWeaver Consulting, PO Box 775444, Steamboat Springs, CO 80477
Melinda Humphry Becker
Smithsonian Institution, 955 L’Enfant Plaza, Suite 3230, Washington, DC 20024
Contributed by the Solar Energy Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received by the ASME Solar Energy Division, April 2002; final revision August 2002. Associate Editor: A Reddy.
J. Sol. Energy Eng. Feb 2003, 125(1): 28-33 (6 pages)
Published Online: January 27, 2003
Article history
Received:
April 1, 2002
Revised:
August 1, 2002
Online:
January 27, 2003
Citation
Walker, A., Balcomb, D., Kiss, G., Weaver, N., and Becker, M. H. (January 27, 2003). "Analyzing Two Federal Building-Integrated Photovoltaics Projects Using ENERGY-10 Simulations ." ASME. J. Sol. Energy Eng. February 2003; 125(1): 28–33. https://doi.org/10.1115/1.1531643
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