Screw compressor refrigeration system has a controlled economizer connection situated between an intermediate pressure separator and the compressor

摘要

The compressor (1) drives the refrigerant and oil mixture through an oil separator (11), condenser (2) and expansion valve (3) into the intermediate pressure vessel (4), second expansion valve (5), liquid separator (6) and evaporator (7). The economy valve (8) controls the connection (9).