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U.S. Department of Energy
Office of Scientific and Technical Information

Solar energy system performance evaluation, Hogate's Restaurant, Washington, DC, June through August 1978

Technical Report ·
OSTI ID:5754374

Hogate's Restaurant (located in Washington, DC) has 6,254 square feet of flat plate collectors used to support energy requirements for a hot water system. The restaurant requires approximately 7,000 gallons of hot water each day between 4:00 am and 2:00 pm. This hot water is used by the restaurant's kitchen facilities and must be supplied at 150/sup 0/F. The solar energy system is a retrofit, and as such, the collectors face southwest instead of ideally facing south. The solar collector loop uses a mixture of 60% propylene glycol and 40% water as the heat transfer fluid. The potable water supply is isolated from the heat transfer fluid by a liquid to liquid heat exchanger. The collection and transfer of solar energy is controlled by the activation of two sets of pumps.

Research Organization:
International Business Machines Corp., Huntsville, AL (USA)
DOE Contract Number:
EG-77-C-01-4049
OSTI ID:
5754374
Report Number(s):
SOLAR/2028-78/14
Country of Publication:
United States
Language:
English