Refrigeration cycle and A operation control system of refrigeration cycle

摘要

The present invention is a refrigerant that can achieve the high driving efficiency in the normal operation of the air circuit and the refrigerant circuit relates to an operation control system . In the operation control method of the refrigerant circuit to perform oil equalization of each container of the refrigerant circuit (Ka) bacteria in the pipe ( 16) of the first to third compressors are communicated with each other via a parallel ( 11 to 13 ) , the first to a third compressor ( 11-13 ) to a pressure difference during operation in each container is characterized in that in each of 1kPa or less .