RANKINE PISTON REFRIGERATING MACHINE

PROBLEM TO BE SOLVED: To obtain excellent refrigerating power and to improve the conversion efficiency of heat energy by combining a Rankine piston engine with an absorption refrigerating machine and by providing a means for introducing a liquid working medium as particles into a cold storage chamber wherein cold heat of a refrigeration source is stored. SOLUTION: The inside of a heating chamber 20 being heated by a heating mechanism 22 at the start, particles 72c are jetted into the heating chamber 20 by an introducing means 90 and gasified by heating and thereby the pressure of a gaseous working medium is raised. A level in one end 10a of a cylinder 10 is depressed by the high-pressure working medium and a liquid working medium 72a is made to flow toward the other end 10b of the cylinder 10, so that a gaseous working medium 70b be compressed. A cooler 32 is made to operate, in succession, to reduce the pressure of the gaseous working medium in a cooling chamber 30 by cooling and thereby a gas-liquid interface on the one end 10a side is raised up, while the gaseous working medium 70b is expanded adiabatically and cold heat is generated in a cold storage chamber 40. The cold heat is taken outside through the intermediary of a cold storage unit 42.