制冷剂工质单位容积制冷量

R22、R32、Ｒ123、R１3４ａ、R１５2a、R161、Ｒ２9０、R24５ｆａ、R4０7ｃ、R410Ａ、R４０4A、Ｒ5０7、Ｒ６0０a、Ｒ7１７、R1234yｆ的单位容积制冷量q´´(kJ／ｍ3