给热系数,是一个热力学术语,主要应用于化学工程物理学方面。给热系数是用来计算导热的,尤其是在固体液体之间对流,或是发生相变的情况下。通常用h代表,忽略给热面积的平均给热系数则用代表。

其中:

q = 流入或损失的热量, J/s = W
h = 给热系数, W/(m2K)
A = 导热面积, m2
= 固体表面与周围流体的温度差, K

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