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工芸基礎知識(選択問題)20180912

2018-09-12View Original

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冷媒が膨張弁を通過する際の流量は、絞り前後で等しい。 A.温度 B.比容 C.比エンタルピー D.比エントロピー
ヒント:冷媒が膨張弁を通過する過程では外部との機械的なエネルギー交換はなく、吸収熱や比運動エネルギーの変化もごくわずかである。開放系の熱力学の第一法則によれば、比エンタルピーのわずかな上昇は無視できる。
Reply #22018-09-13
A.温度#こちらで迅速に返信#

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