Patent Number: 6,253,566

Title: Brine cooling apparatus

Abstract: A brine cooling apparatus is provided which addresses to an environmental problem by not contributing to global warming and can prevent brine from freezing within a heat exchange. The apparatus is structured such that a screw compressor, a condenser, a main expansion valve and an evaporator are connected by a pipe so as to cool brine flowing through the evaporator. The refrigerant is an ammonia refrigerant, the evaporator is a plate type heat exchanger constructed by laying a plural sheets of plates, and capacity control means is provided in such a manner as to control a capacity of the screw compressor in accordance with the flow amount of the brine.

Inventors: Ichikawa; Yoshifumi (Shizuoka, JP), Morohoshi; Tsuneji (Shizuoka, JP)

Assignee: Hitachi, Ltd.

International Classification: F28F 3/00 (20060101); F25B 1/04 (20060101); F28F 3/04 (20060101); F25B 1/047 (20060101); F25B 49/02 (20060101); F25B 39/02 (20060101); F25B 47/00 (20060101); F25D 017/02 ()

Expiration Date: 07/03/2018