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当帶熱体在傳熱过程中改變其物相時,或在自然对流的情况下,其傳熱膜係數方程式中,常須应用帶熱体与固体壁溫度之差△t_1。同時要决定△t_1的大小,又必須知道在此時的傳熱总係數K之值。因此,在計算前必須假定△t_1之值,然後用試探法求得K。計算時反復核算非?槐恪K赵獜汀㈣扯ㄒ痪帉懙幕に銏D集中(第二册126頁)所应用的方法,雖簡化了計算方法,但尚不能在有物相變化情狀下(例如沸騰)及在自然对流時的傳熱計算中簡化上述的反復試探。加爾洛夫斯基从分析結果,得到了一种在各种情况下可以使用的方法。这個方法的優點是可以
When the heating body changes its phase during heat transfer or in the case of natural convection, the difference Δt_1 between the heating body and the solid wall temperature must always be applied to the heat transfer coefficient coefficient equation. At the same time to determine the size of △ t_1, but also must know the total heat transfer coefficient K at this time. Therefore, before calculating the value of △ t_1 must be assumed, and then use the heuristic method to find K. The calculation method is repeated calculation of non-Huai Ke K Zhao Ting Ting (4) pull ㄒ paralyzed 懙 懙 curtain ni 銏 D concentrated (second album 126 pages) applied method, although simplifies the calculation method, but not yet in the case of physical changes (Such as boiling) and simplifying the above-mentioned iterative heuristics in heat transfer calculations in natural convection. Garlovski obtained from the analysis results, a method that can be used in various situations. The advantage of this method is that it can