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Project Examples

Solar hot water system for the village of Quian, Peru

Course: 22.521 Solar Fundamentals
Semester: Fall 2008
Instructor: John Duffy
Partner: Village Empowerment Inc.

A solar hot water system was designed for the medical clinic in Quian. Hourly horizontal global irradiation was analyzed from remote sites in Peru and extrapolated the results to monthly averages for the village of Quian and optimal slopes and azimuth angle were chosen for a solar hot water system. The system has a capacity of 50 gallons a day of water needed at a desired temperature of 140 F and that the inlet water is at about ambient temperature. A collector was selected were parts are available in Peru and can be made there without special tools. The type, size, and number of collectors were specified as well as the storage tank size and piping size. Both, a thermosyphon system as well as one with a pump were considered. Construction was begun in January 2009.