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82问答网 > 气体温度对辐射换热的影响与气体温度对对流换热的影响?有什么关系

气体温度对辐射换热的影响与气体温度对对流换热的影响?有什么关系

2025-03-15 10:48:51

推荐回答（1个）

回答1：

对外辐射：只要空气温度不是绝对零度就有辐射,辐射强度与K温度成正比；
吸收辐射：与空气自身温度无关,对不同波长的吸收效率不同,对长波辐射吸收率较高；
热对流：气体流动引起的热流动,与流动有关.对流过程中存在热扩散,热扩散方向总是由高温指向低温.

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