Dual flash and thermal economized refrigeration system

摘要

A vapor compression refrigeration system which has a compressor, a condenser, a low temperature flash economizer, a high temperature flash economizer and a chiller connected to form a primary refrigerant loop and a second compressor and economizer condenser connected to partially form a secondary refrigerant loop. Gaseous refrigerant from the high temperature flash economizer is condensed by the economizer condenser and then flashed in the low temperature flash economizer. The gaseous refrigerant from the low temperature flash economizer is recompressed by the second compressor and thereafter recondensed by the economizer condenser. The recondensed refrigerant is then circulated to the low temperature flash economizer together with the remaining liquid refrigerant from the condenser.