| 载气蒸发传热特性的研究 |
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| 引用本文： | 杨传芳,洪滨,徐维勤,沈自求.载气蒸发传热特性的研究[J].过程工程学报,1995(3). |
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| 作者姓名： | 杨传芳 洪滨 徐维勤 沈自求 |
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| 作者单位： | 中国科学院化工冶金研究所!北京，100080，中国科学院化工冶金研究所!北京，100080，大连理工大学化工学院!大连，116012，大连理工大学化工学院!大连，116012 |
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| 摘 要： | 以空气-水、苯蒸汽-水为物系，对垂直管内的载气蒸发传热特性进行了研究，发现对空气-水物系，蒸发传热系数比不通载气的对流涕腾传热系数提高11～55％，对苯蒸汽-水体系可提高27～70％．本文对载气蒸发的传热机理作了分析，指出通入载气可使壁面过热度降低，因此强化了传热．
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| 关 键 词： | 载气蒸发 传热 垂直管 机理 |
CHARACTERISTICS OF HEAT TRANSFER FOR GAS-CARRYING EVAPORATION |
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| Yang Chuanfang and Hong Bin.CHARACTERISTICS OF HEAT TRANSFER FOR GAS-CARRYING EVAPORATION[J].Chinese Journal of Process Engineering,1995(3). |
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| Authors: | Yang Chuanfang and Hong Bin |
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| Abstract: | In this paper,the behavior of gas-carrying evaporation heat transfer in a vertical tube was studied with air-water and benzene vapor-water systems respectively.It was found that the heat transfer coefficient for gas-carrying evaporation was raised by 11~55% for air-water system as compared to that for convection boiling, while the increase for benzene vapor-water system was 27~70%. The mechanism of gas-carrying evaporation was analyzed and it was shown that the decrease in wall superheating was the maill effect caused by the induced gases, thus leading to enhancement of heat transfer. |
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| Keywords: | Gas-carrying evaporation Heat transfer Vertical tube Mechanism |
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