| 摘要 |
<p>Provided is a refrigeration circuit including a compressor such as a compressor having a built-in motor, a condenser, a pressure reduction and expansion means, and an evaporator. The refrigeration circuit uses R1234yf as a refrigerant and provides therein a radical-capturing agent or a polymerization inhibitor. When the R1234yf as a new refrigerant is used and there is a possibility that radicals are formed, it is possible to prevent or suppress generation of radicals and prevent polymerization of R1234yf so that a target performance can be realized even when the new refrigerant is used.</p> |
