| abstract |
The refrigeration apparatus 100 includes a heat source unit 10, a utilization unit 20A, a liquid refrigerant pipeline 31, and a gas refrigerant pipeline 32. [ The utilization unit 20A has utilization unit internal passages 29a to 29c. The liquid refrigerant piping 31 and the gas refrigerant piping 32 connect the heat source unit 10 and the utilization unit internal pipelines 29a to 29c. The refrigerant circulates through the heat source unit 10, the utilization unit 20A, the liquid refrigerant piping 31, and the gas refrigerant piping 32. [ The refrigerant includes a compound represented by a molecular formula having at least one carbon-carbon unsaturated bond. A disproportionation inhibitor for suppressing the disproportionation reaction of the refrigerant is applied to the inner surfaces of at least a part of the liquid refrigerant piping 31, the gas refrigerant piping 32, and the utilization unit internal pipelines 29a to 29c. |