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熱伝達係数Kの変化状況は?

2016-06-26View Original

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カバーコンデンサーの内管には空気が流れ、管間には飽和水蒸気が流れる。蒸気圧が一定で空気の入口温度も一定の場合、空気流量が増加すると、伝熱係数Kは()A、増大する;B、減少;C、ほぼ変わらない。(具体的な導出過程を添付していただけると幸いです。よろしくお願いします :))
Reply #22016-06-27
Cは主に、凝縮給熱係数が非常に大きいためです。
Reply #32016-06-27
Aが増加し、このときのKは主に管内の空気対流熱伝達係数に依存する

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