کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
661311 | 1458169 | 2006 | 13 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Heat transfer during pool boiling based on evaporation from micro and macrolayer Heat transfer during pool boiling based on evaporation from micro and macrolayer](/preview/png/661311.png)
An analytical model of heat transfer based on evaporation from the micro and macrolayers to the vapor bubble during pool boiling is developed. Evaporation of microlayer and macrolayer during the growth of individual bubbles is taken care of by using temporal and spatial variation of temperature in the liquid layer. Change of bubble shape during the entire cycle of bubble growth and departure is meticulously considered to find out the rate of heat transfer from the solid surface to the boiling liquid. Continuous boiling curve is developed by considering the bubble dynamics and decreasing thickness of liquid layer along with the increase of dry spot radius. Transient variation of macrolayer and microlayer thickness is predicted along with their effect on CHF. Present model exhibits a good agreement with reported experimental data as well as theories.
Journal: International Journal of Heat and Mass Transfer - Volume 49, Issues 19–20, September 2006, Pages 3487–3499