SunAngle

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Calculates solar angles based on location, date, and time. It's useful in passive solar building design, PV and solar thermal system design and analysis, and other applications such as photography. Screen Shots

Keywords

Solar, sun, angle

Validation/Testing

N/A

Expertise Required

None required.

Users

Several hundred regular users, split approximately evenly between U.S. and other countries.

Audience

Architects, energy analysts, home owners.

Input

Location, date, time, time zone.

Output

Declination, equation of time, local solar time, hour angle, solar altitude, solar azimuth, time of sunrise and sunset.

Computer Platform

Web

Programming Language

JavaScript

Strengths

Great for determining instantaneous sun angles. Good educational background material.

Weaknesses

Can't output tabular data for multiple dates/times.

Contact

Company:

Sustainable By Design

Address:

3631 Bagley Avenue North
Seattle, Washington 98103
United States

Telephone:

(206) 925-9290

Facsimile:

877-684-0797

E-mail:

christopher@susdesign.com

Website:

http://www.susdesign.com/sunangle

Availability

Available at http://www.susdesign.com/sunangle, distributed as shareware ($10 for personal users, $25 for commercial users).