Abstract: A cooling system includes a cold-accumulating refrigerator, and a cooling circuit. The cold-accumulating refrigerator includes a cold accumulator. The cooling circuit includes a heat exchanger. The heat exchanger is thermally brought into contact with a portion of the cold accumulator whose temperature is varied from a high temperature to a low temperature by a working medium flowing therein. Thus, it is possible to utilize cold produced by the working medium flowing in the cold accumulator in one cycle (e.g., from a high temperature to a low temperature, and from a low temperature to a high temperature), thereby remarkably enhancing the cooling system in terms of cooling efficiency.

Abstract: A cooling system includes a cold-accumulating refrigerator, and a cooling circuit. The cold-accumulating refrigerator includes a regenerator. The cooling circuit includes a main circuit, and a branched circuit. The main circuit includes a counterflow heat exchanger. The branched circuit is branched from an upstream portion of the main circuit, and joined to a downstream portion thereof, thereby reducing one of the flows of a refrigerant, flowing in a high-pressure-side passage and a low-pressure-side passage which are disposed in the counterflow heat exchanger, with respect to the other one of the flows. Moreover, the branched circuit includes a heat exchanger, and the heat exchanger is thermally brought into contact with a portion of the regenerator whose temperature is varied from a high temperature to a low temperature by another refrigerant flowing therein.