Freeze protected hot water solar heating apparatus

Patent · Tue Jan 27 04:00:00 EST 1981

OSTI ID:6482047

Sitzlar, R

Freeze protected hot water solar heating apparatus is disclosed for providing room heating and domestic hot water service comprising a solar heat collector, a water storage tank, a freeze protector, a fuel burning boiler, a heat exchanger, in-line sensors, and pumps for circulating the water. The freeze protector is in heat transference contact with the flue of the boiler. The freeze protector, controlled by a temperature sensor, prevents freezing of the water in the solar collector and additionally utilizes waste heat from the flue of the boiler to heat water anytime the boiler is in operation. The boiler is activated, upon the water in the water tank falling below a predetermined temperature. A thermostat controlled fan forces air over the heat exchanger to provide room heating. Check valves are provided for preventing back flow of water from the solar collector. The apparatus may also contain a heat pump having its heat transference coils adjacent to the heat exchanger for full utilization of forced air from the fan.

• Assignee: IFI; EDB-81-090995
• Patent Number(s): US 4246886
• OSTI ID: 6482047
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140901 -- Solar Thermal Utilization-- Space Heating & Cooling
140907 -- Solar Thermal Utilization-- Water Heating
141000* -- Solar Collectors & Concentrators
APPLIANCES
BLOWERS
BOILERS
CONTROL EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
FLOW REGULATORS
FLUE GAS
FREEZE PROTECTION
GASEOUS WASTES
HEAT PUMPS
HEATERS
HEATING SYSTEMS
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR HEATING SYSTEMS
SOLAR WATER HEATERS
VALVES
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES
WATER HEATERS