Solar project description for Hogate's Restaurant
Solar energy is used to preheat process water for this 900 seat restaurant on the north bank of the Potomac River in Washington, D.C. The solar energy system was retrofitted to the building during the summer and autumn of 1977. The system utilizes 300 Sunworks collectors with a total effective aperture area of 5840 square feet. The collectors face 45/sup 0/ west of south at a tilt angle of 55/sup 0/ from the horizontal because of building constraints. The collectors are mounted in two banks, each two collectors high on a steel I-beam support structure that runs parallel to the sloped lines of the two existing mansard roofs. All collectors are piped in parallel, and balancing valves are used for flow balancing. A propylene glycol and water mixture is used in the collectors, and the fluid is pumped through two heat exchangers in series. On the other side of the heat exchangers, duplex pumps circulate water from the storage tanks and back to the heat exchangers. On demand for hot water in the restaurant, preheated water flows from the tanks to a gas-fired boiler as cold water make-up is fed to the tanks. All the pumps, heat exchangers, and controls are located in a mechanical equipment room in the penthouse at the same level as the collectors. The two 5000-gallon pressurized storage tanks are located two floors below the equipment room in a parking garage.
- Research Organization:
- PRC Energy Analysis Co., McLean, VA (USA)
- OSTI ID:
- 5477616
- Report Number(s):
- SOLAR/2028-78/50
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140907* -- Solar Thermal Utilization-- Water Heating
ALCOHOLS
ANTIFREEZE
APPLIANCES
BUILDINGS
COMMERCIAL BUILDINGS
CONTAINERS
CONTROL EQUIPMENT
DESIGN
ENERGY STORAGE
EQUIPMENT
FLAT PLATE COLLECTORS
FLOW REGULATORS
GAS APPLIANCES
GLYCOLS
HEAT EXCHANGERS
HEAT STORAGE
HEATERS
HEATING
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
RESTAURANTS
SENSIBLE HEAT STORAGE
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR HEATING
SOLAR WATER HEATERS
SOLAR WATER HEATING
STORAGE
TANKS
VALVES
WATER HEATERS