r134a

r134a 與 r22除濕機(jī)冷媒(制冷劑)介紹
冷媒又稱為制冷劑，雪種！冷媒是一種容易吸熱變成氣體，又容易放熱變成液體的物質(zhì)。早期冷凍廠用氨氣當(dāng)冷煤，氨在受壓時(shí)，放熱變成液體；當(dāng)高壓液體減壓變成氣體時(shí)，便會(huì)吸熱。家用除濕機(jī)冷媒 r134a,工業(yè)除濕機(jī)r22

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18 05 2017

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