Patent ID: 6202427
Filing Date: 2001-03-20
Classification: F25B

Abstract:
A refrigerating air-conditioning system used to reduce and reuse waste energy comprising a compressor, a cold making tank, a heat making tank, an intermediate heat exchanger, a plurality of electromagnetic valves, a fan motor, a plurality of temperature sensors, a refrigerant pair of flow controllers, and a drying filter, wherein:the compressor is used to supply power to a circulating refrigerant;the cold making tank is used to supply cold source to a cold requiring room;the heat making tank is used to supply heat source to a heat requiring room;the intermediate heat exchanger is composed of a pipe row;the fan motor is able to smoothly change the rotational speed thereof so as to control the heat exchange capacity of the intermediate heat exchanger such that the refrigerating air-conditioning system can be operated at its highest efficiency at any time, thereby efficiently using the energy;the electromagnetic valves are used to control the flow direction of the circulating refrigerant such that the cold making tank, the heat making tank, and the intermediate heat exchanger can function in correspondence with different operation modes;each refrigerant flow controller is used to control the flow of the circulating refrigerant;the drying filter is used to filter the impurities and to absorb the water contained in the refrigerating air-conditioning system;the refrigerating air-conditioning system is operated according to three operation modes, wherein the first operation mode is executed when the cold making requirement is greater than the heat making requirement, the second operation mode is executed when the heat making requirement is greater than the cold making requirement, and the third operation mode is executed when the cold and heat making requirements exist synchronously;whereby, the fan motor is able to supply a variable wind rate to the intermediate heat exchanger which functions to adjust the heat exchange capacity of the refrigerating air-conditioning system such that the refrigerating air-conditioning system is operated at its highest efficiency, thereby reducing production of the waste energy.