低温与超导
低溫與超導
저온여초도
CRYOGENICS AND SUPERCONDUCTIVITY
2010年
3期
62-64,68
,共4页
螺旋扁管%沸腾换热%气液两相流%换热系数
螺鏇扁管%沸騰換熱%氣液兩相流%換熱繫數
라선편관%비등환열%기액량상류%환열계수
Spiral-flat tube%Boiling heat transfer%Gasoline-air mixtures%Heat transfer coefficient
以汽油-空气为介质,在不凝性气体质量含量不超过5%时,对导程为200mm的螺旋扁管管束中的沸腾换热进行了实验研究,分析了沸腾换热系数随两相质量流量的变化规律以及流动压降随空气流量的变化规律.得到了相应条件下,载气汽油在该导程的螺旋扁管管束中的沸腾换热实验关联式.
以汽油-空氣為介質,在不凝性氣體質量含量不超過5%時,對導程為200mm的螺鏇扁管管束中的沸騰換熱進行瞭實驗研究,分析瞭沸騰換熱繫數隨兩相質量流量的變化規律以及流動壓降隨空氣流量的變化規律.得到瞭相應條件下,載氣汽油在該導程的螺鏇扁管管束中的沸騰換熱實驗關聯式.
이기유-공기위개질,재불응성기체질량함량불초과5%시,대도정위200mm적라선편관관속중적비등환열진행료실험연구,분석료비등환열계수수량상질량류량적변화규률이급류동압강수공기류량적변화규률.득도료상응조건하,재기기유재해도정적라선편관관속중적비등환열실험관련식.
An experimental investigation on boiling heat transfer of gasoline-air mixtures in spiral-flat tubes of 200mm- pitch was carried out, while the content of incondensable gas is less than 5%. The result shows that while the content of incondensable gas increases, the bubble point temperature of gasoline decreases and the flow pressure drop increases. And the boiling heat transfer coefficient experimental correlation was established.
