| 水平管内低压蒸汽的冷凝 |
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| 引用本文： | 尹铭,陈嘉宾,马学虎,李凇平. 水平管内低压蒸汽的冷凝[J]. 化工学报, 2003, 54(7): 913-917 |
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| 作者姓名： | 尹铭 陈嘉宾 马学虎 李凇平 |
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| 作者单位： | 大连理工大学化学工程研究所，辽宁 大连 116012 |
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| 摘 要： | 对水平管内低压蒸汽冷凝现象进行了实验研究.考察了冷却水流量、温度恒定条件下热流密度、蒸汽压力、蒸汽流速对冷凝传热膜系数及总传热系数的影响关系，同时考察了总传热温差、蒸汽进出口温差及压降随热流密度变化的关系.关联出了相应的水平管内冷凝传热膜系数的计算式，计算值与实测值的偏差在±15%以内.
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| 关 键 词： | 低压 冷凝 水平管 |
| 文章编号： | 0438-1157(2003)07-0913-05 |
| 收稿时间： | 2001-09-12 |
| 修稿时间： | 2001-09-12 |
CONDENSATION OF LOW-PRESSURE VAPOR IN HORIZONTAL TUBE |
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| YIN Ming,CHEN Jiabin,MA Xuehu,LI Songping. CONDENSATION OF LOW-PRESSURE VAPOR IN HORIZONTAL TUBE[J]. Journal of Chemical Industry and Engineering(China), 2003, 54(7): 913-917 |
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| Authors: | YIN Ming CHEN Jiabin MA Xuehu LI Songping |
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| Abstract: | The phenomenon of condensation of low-pressure vapor in a horizontal tube was studied.The interactions between heat flux density,vapor pressure,vapor velocity and the coefficient of heat transfer for filmwise condensation in the tube,the overall coefficient of heat transfer were investigated.The relationships between heat flux density and the overall temperature difference,the difference in temperature and pressure drop at the entrance and the exit of the vapor were investigated as well.Analytical relationships were obtained for calculation of the coefficient of heat transfer for filmwise condensation in the tube.The deviation between the experimental value and the calculated value was lower than ±15%. |
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| Keywords: | low pressure condensation horizontal tube |
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