机电设备
機電設備
궤전설비
MECHANICAL AND ELECTRICAL EQUIPMENT
2015年
1期
65-69
,共5页
翅片管%表面换热系数%翅片间距%自然对流
翅片管%錶麵換熱繫數%翅片間距%自然對流
시편관%표면환열계수%시편간거%자연대류
finned tube%heat transfer coefficient%fin spacing%natural convection
对环形翅片管的自然对流换热过程进行了数值计算,主要关注翅片间距对翅片管自然对流换热过程的影响,结果表明:在给定结构尺寸下,翅片间距达到10mm以上时,翅片间散热不会相互影响;翅片间距在10mm以内时,随着翅片间距减小,翅片的表面换热系数逐渐降低。
對環形翅片管的自然對流換熱過程進行瞭數值計算,主要關註翅片間距對翅片管自然對流換熱過程的影響,結果錶明:在給定結構呎吋下,翅片間距達到10mm以上時,翅片間散熱不會相互影響;翅片間距在10mm以內時,隨著翅片間距減小,翅片的錶麵換熱繫數逐漸降低。
대배형시편관적자연대류환열과정진행료수치계산,주요관주시편간거대시편관자연대류환열과정적영향,결과표명:재급정결구척촌하,시편간거체도10mm이상시,시편간산열불회상호영향;시편간거재10mm이내시,수착시편간거감소,시편적표면환열계수축점강저。
Numerical analysis is performed on the natural convection of the finned tube. The influence of the fin spacing to the heat transfer performance of the finned tube is mostly concerned. The result shows that, under the given structure, the heat transfer of the fins will not affect each other when the fin spacing exceeds 10 millimeters,otherwise, the heat transfer performance will be reduced with the decrease of the fin spacing.