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輻射保暖和對流采暖有什么區別?

輻射保暖和對流采暖有啥區別?

輻射保暖和對流采暖有什么區別?的問題共有2個回答

144****6440

輻射保暖就是火爐,暖氣片等熱量直接輻射出去,如果屋內沒有風,離暖氣片越近的地方越熱,遠處就會不熱。對流采暖就是將熱量用風吹出去,在屋內形成風流動,全屋的冷熱程度一樣。比如電熱風扇,就是對流采暖的形式。

2020-03-27

178****6726

熱傳導是介質內無宏觀運動時的傳熱現象,其在固體、液體和氣體中均可發生,但嚴格而言,只有在固體中才是純粹的熱傳導,而流體即使處于靜止狀態,其中也會由于溫度梯度所造成的密度差而產生自然對流,因此,在流體中熱對流與熱傳導同時發生。熱對流又稱對流傳熱,指流體中質點發生相對位移而引起的熱量傳遞過程,是傳熱的三種方式之一。熱輻射,物體由于具有溫度而輻射電磁波的現象。熱量傳遞的3種方式之一。一切溫度高于絕對零度的物體都能產生熱輻射,溫度愈高,輻射出的總能量就愈大,短波成分也愈多。

2020-03-27

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