Patent ID: 7243504
Filing Date: 2007-07-17
Classification: F25B,Y02A,Y02E,Y02P

Abstract:
1. A cogeneration system comprising: an engine, which drives a generator to generate electricity; a cooling/heating unit comprising a heat pump type refrigerant cycle to circulate a refrigerant through in an order of at least one compressor, a four-way valve, a first outdoor heat exchanger, a first expansion device, and an indoor heat exchanger during a cooling operation of the cogeneration system; and a waste heat consuming heating unit comprising a refrigerant cycle to circulate the refrigerant through in an order of the compressor, the four-way valve, the indoor heat exchanger, a second expansion device, and a second outdoor heat exchanger to be heated by waste heat of the engine during a heating operation of the cogeneration system, wherein the waste heat consuming heating unit further comprises a refrigerant line and a bypass valve to selectively guide the refrigerant emerging from the second outdoor heat exchanger but before entering into the compressor to pass through the first outdoor heat exchanger during the heating operation of the cogeneration system.