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Awnshade
Florida Solar Energy Center (FSEC)
1679 Clearlake Road
Cocoa, FL 32922-5703
Phone: 321-638-1000
Fax: 321-638-1010
Website: www.ucf.edu
Calculates the unshaded fraction of diffuse sky irradiance or illuminance incident on a rectangular window for any given solar position coordinates relative to the window.
Energy-10
Sustainable Buildings Industry Council
1331 H Street, NW, Suite 1000
Washington, DC 20005
Phone: 202-628-7400
Fax: 202-393-5043
Website: www.sbicouncil.org
Enables building designers to optimize energy-efficient building strategies including daylighting, passive solar heating, insulation, improved windows, shading, high-efficiency mechanical systems, and other building components.
PV-Designpro
Maui Solar Energy Software Corporation
810 Haiku Road 113
P.O. Box 1101
Haiku, HI 96708
Phone: 808-573-6712
Fax: 808-879-5060
Website: www.mauisolarsoftware.com
Simulates photovoltaic system operation on an hourly basis for 1 year, based on a user-selected climate and system design.
PV F-Chart
F-Chart Software
4406 Fox Bluff Road
Middleton, WI 53562
Phone: 608-836-8531
Fax: 608-836-8536
Website: www.fchart.com
Estimates monthly performance for photovoltaic systems with and without storage and utility feedback.
PVform
Photovoltaic Systems Assistance Center
Sandia National Laboratories
P.O. Box 5800
Albuquerque, NM 87185-0753
Phone: 505-844-3698
Fax: 505-844-6541
Website: www.sandia.gov
A free photovoltaic system simulation program for stand-alone and grid-interactive applications. It simulates hourly performance for a 1-year period.
PVWatts
Website: www.pvwatts.org
An Internet-accessible tool developed by the National Renewable Energy Laboratory that calculates electrical energy produced by a grid-connected photovoltaic (PV) system for locations within the United States and its territories.
Retscreen
CANMET Energy Diversification Research Laboratory/Natural Resource’s Canada
Website: www.gc.ca
Available for free. Can be used to evaluate the energy production, life-cycle costs, and greenhouse gas emissions reduction for various solar and other renewable energy technologies.
Solar Environmental Benefits Calculator
U.S. Environmental Protection Agency
Website: www.epa.gov or srpnet.com
Estimates the pollution reduction benefits of using solar photovoltaic, water heaters, and pool heating systems.
Home Energy Efficient Design (HEED)
Department of Architecture and Urban Design
University of California at Los Angeles
Los Angeles, CA 90095-1467
Website: www.ucla.edu/energy-design-tools
Plots sunlight penetrating through a window with any combination of rectangular fins and overhangs, and can provide a printout of annual tables of percent of window in full sun, radiation on glass, and so on. SOLAR-5 is a DOS-based tool that can simulate the performance of up to 40 different solar energy components in a building. It plots thermal mass, heat transfer, temperatures, daylighting, HVAC parameters, and fuel and electricity costs, and it estimates air pollution emissions.
Solar-Pro
Maui Solar Energy Software Corporation
810 Haiku Road 113
P.O. Box 1101
Haiku, HI 96708
Phone: 808-573-6712
Fax: 808-879-5060
Website: www.mauisolarsoftware.com
For active solar water heating system design, simulation, and prediction.
Sun or Moon Altitude/Azimuth Table for One Day
U.S. Naval Observatory’s Astronomical Applications Depart-ment
Website: www. usno.navy.mil/USNO/astronomical-applications
Provides altitudes and azimuths for the sun for locations in the United States. This provides a simple way to deter-mine if a landscape feature will shade a potential solar collector site.
Solar Pathfinder
3953 Marsh Creek Rd.
Linden, TN 37096
Phone: 317-501-2529
Website: www.solarpathfinder.com
Calculates the position of the center of the sun in the sky at locations, dates, and times specified by the user. Numerous calculation options are available.
Sunspec
Florida Solar Energy Center (FSEC)
1679 Clearlake Road
Cocoa, FL 32922-5703
Phone: 321-638-1000
Fax: 321-638-1010
Website: www.ucf.edu
A DOS-based program that calculates the spectral distribution of solar irradiance and the integrated irradiances and illuminances for clear-sky direct beam, diffuse sky, and ground-reflected radiation incident upon an arbitrarily oriented flat surface.
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