Patent ID: 6418745
Filing Date: 2002-07-16
Classification: F25B,Y02A

Abstract:
A heat powered heat pump system comprising:(a) fluid refrigerant and fluid refrigerant pump means; (b) switching valve means having two open positions and one blocked off position for the purpose of selectively directing the flow of said refrigerant; (c) heat exchanger means which acts as a heat powered refrigerant compressor capable of receiving and transferring available external heat to vaporize all of said liquid refrigerant passing through said heat exchanger means, interposed between said refrigerant pump means and said switching valve means, for the purpose of applying available external heat to said refrigerant thereby vaporizing all of said refrigerant; (d) thermal compressor means having a compressor housing, a double piston assembly and four sealed chambers such that said four sealed chambers are not in direct fluid communication with any other of said four sealed chambers, whereby said thermal compressor means utilizes heat energy to power the refrigerant compression process and liquid refrigerant vaporization; and (e) one or more heat exchanger means which can function as condensers or evaporators within said system, wherein said compressor means is interposed between said switching valve means and said one or more heat exchanger means.