對流熱傳，其熱對流係數為α，流體溫度為Tf，壁面溫度為Tw，熱流密度為q，當流體溫度變為2Tf，壁面溫度為2Tw，其他條件不變時，熱流密度變為多少q？(A)½(B)1(C)2(D)4

問題詳情

1.對流熱傳，其熱對流係數為α，流體溫度為Tf，壁面溫度為Tw，熱流密度為q，當流體溫度變為2Tf，壁面溫度為2Tw，其他條件不變時，熱流密度變為多少q？
(A)½
(B)1
(C)2
(D)4

參考答案

答案：C
難度：簡單0.736585
統計：A(23),B(6),C(151),D(25),E(0)

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