REFRIGERATION AIR CONDITIONER

摘要

PROBLEM TO BE SOLVED: To provide a refrigeration air conditioner performing liquid balance control capable of highly accurately determining the balance between a plurality of heat source machines and enabling distribution in regard to a refrigerant. SOLUTION: In the refrigeration air conditioner 100, a main heat source machine 1 (subsidiary heat source machine 101) having a main accumulator 6 (subsidiary accumulator 106) is provided in parallel between a main compressor 2 (subsidiary compressor 102) and a main water heat exchanger 4 (subsidiary water heat exchanger 104). The refrigeration air conditioner 100 is provided with a main heat exchanger outlet overheating degree computing means 15 (subsidiary heat exchanger outlet overheating degree computing means 115) for computing a degree of outlet overheating of the refrigerant flowing out from the main water heat exchanger 4 (subsidiary water heat exchanger 104); a main compressor discharge overheating degree computing means 16 (subsidiary compressor discharge overheating degree computing means 116) for computing a degree of discharge overheating of the refrigerant discharged from the main compressor 2 (subsidiary compressor 102); and a liquid balance control means 17 for determining whether or not the amount of a liquid refrigerant stored in the main accumulator 6 (subsidiary accumulator 106) provided in each heat source machine is in an unbalanced state based on the degree of outlet overheating and the degree of discharge overheating. COPYRIGHT: (C)2010,JPO&INPIT