Accession Number : ADD009732

Title :   Control System for Solar-Assisted Heat Pump System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Kirts,Richard E

Report Date : 20 Jul 1982

Pagination or Media Count : 9

Abstract : A control system for a solar-assisted heating and cooling system including a solar collector system, a thermal storage system, a water-to-air heat pump, a water-to-air heat exchanger, a domestic water heater, and a cooling tower. The preferred embodiment of the controller of the present invention includes a first temperature sensing means for sensing the temperature of the collector fluid at the outlet of the solar collector system, a second temperature sensing means for sensing the temperature of the storage fluid at the thermal storage system, and a third temperature sensing means for sensing the temperature of the inlet water to the domestic water heater. The controller compares the temperature of the thermal storage fluid with three control temperatures which define four temperature ranges. The controller, based on the temperature range in which the temperature of the thermal storage fluid falls, whether the system is in the heating or cooling mode, and whether there is a demand for heating or cooling automatically controls the thermal storage system, the heat pump, the heat exchanger, the cooling tower, and the connections therebetween to provide increased efficiency.

Descriptors :   *Patents, *Solar heating, *Cooling and ventilating equipment, *Heat pumps, *Control systems, Inventions, Solar collectors, Heat exchangers, Heaters, Hot water, Cooling towers, Temperature sensitive elements, Temperature control, Energy storage, Systems engineering, Environmental engineering, Energy conservation, Efficiency

Subject Categories : Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE