| 摘要 |
A refrigeration apparatus includes a refrigerant circuit in which a compressor 1, a condenser 2, a liquid receiver 3, a first opening-and-closing valve, an expansion valve 5, and an evaporator 6 are connected in order by pipes and through which refrigerant circulates. The refrigerant is HFO1123 or a refrigerant mixture containing HFO1123. A ratio of a refrigeration capacity to an opening area of the first opening-and-closing valve is within a range of 0.25 to 0.6 (kw/mm 2 ). |
