A direct thermosyphoning water heater
A passive solar water heating system installed in a greenhouse in Corrales, New Mexico incorporates 76 ft/sup 2/ of collector area and two 40 gal insulated storage tanks located in a loft about 2.5 ft above the collectors. The site-built thermosyphoning system has a collector constructed of four runs of copper tubing snapped onto aluminum fin extrusions 6 in. wide by 38 ft long behind the double pane glazing of the greenhouse. The outward facing sides of the fins are painted black and the collector is not insulated. At a greenhouse temperature of 58/sup 0/F, the water was still heated to a regular temperature of 140/sup 0/F. A low collector efficiency measured on one clear March day was attributed to heat loss to the greenhouse. A total of 320 ft/sup 2/ of aluminum clad cardboard honeycomb shutters cover the glazing not utilized by the collector for heat retention in winter and shading in summer. The system cost $1,750, including labor.
- OSTI ID:
- 5380448
- Journal Information:
- Southwest Bull., N.M. Sol. Energy Assoc.; (United States), Journal Name: Southwest Bull., N.M. Sol. Energy Assoc.; (United States) Vol. 4:3; ISSN SNMAD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140907* -- Solar Thermal Utilization-- Water Heating
ALUMINIUM
APPLIANCES
BUILDINGS
CONVECTION
COPPER
ELEMENTS
ENERGY STORAGE
EQUIPMENT
GAS APPLIANCES
GREENHOUSES
HEAT STORAGE
HEATERS
HEATING SYSTEMS
METALS
PERFORMANCE
SHUTTERS
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR WATER HEATERS
STORAGE
THERMOSYPHON EFFECT
TRANSITION ELEMENTS
WATER HEATERS