問題詳情
三、一支長（L）為 50 m 且直徑（D）為 1 m 的金屬棒，在金屬棒為 500 K，而外界環境為 1,000 K，求其熱傳量為何？［已知放射率ε = 0.6 ，熱傳係數h(W / m2 ⋅ K ) = 0.27
， ΔT 為溫度差，Stefan Boltzmann Constant σ = 5.867 × 10 − 3 (W / m 2 ⋅ K ) ］（15 分）
， ΔT 為溫度差，Stefan Boltzmann Constant σ = 5.867 × 10 − 3 (W / m 2 ⋅ K ) ］（15 分）
參考答案
答案：B
難度：適中0.602941
統計：A(71),B(123),C(2),D(1),E(0)
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