| 立式降膜蒸发器的机理研究 |
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| 引用本文： | 杜帅,孙文哲,苏子云. 立式降膜蒸发器的机理研究[J]. 制冷空调与电力机械, 2010, 31(5): 20-23 |
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| 作者姓名： | 杜帅 孙文哲 苏子云 |
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| 作者单位： | 上海海事大学商船学院,上海200135 |
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| 基金项目： | 上海市教委科技资助项目 |
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| 摘 要： | 研究了立式降膜蒸发机理,得知蒸发管路底部的未蒸发制冷剂流量与管子单位面积制冷量成反比,需要采用循环喷淋设备;制冷剂入口初始速度随管子单位面积换热量增大和管长增大而减小,初始液膜总厚度随液膜主流区初始速度增大而减小。采用射流泵作为循环喷淋设备后,可以节省液体循环泵的耗功。
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| 关 键 词： | 降膜蒸发 循环喷淋 射流泵 |
Mechanism Research of Vertical Falling Film Evaporator |
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| DU Shuai,SUN Wen-zhe,SU Zi-yun. Mechanism Research of Vertical Falling Film Evaporator[J]. Refrigeration Air Conditioning & Electric Power Machinery, 2010, 31(5): 20-23 |
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| Authors: | DU Shuai SUN Wen-zhe SU Zi-yun |
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| Affiliation: | (Merchant Marine College Shanghai Marinetime University,Shanghai 200135,China) |
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| Abstract: | The paper analyzed the principle of vertical falling-film evaporation.There are un-evaporated refrigerant flux mass on the bottom of the tube in inverse proportion of the cooling capacity per unit area.It’s bound to exist,so it needs the circulation spraying device.Initial velocity of refrigerant at the entrance will lower as the cooling capacity per unit area and the length of tube increasing.The total thickness of the initial fluid-film will decrease as the initial velocity of refrigerant at the entrance increasing.Using a jet pump as the circulation spraying device can save the energy consumed by liquid circulating pump. |
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| Keywords: | falling-film evaporation circulation spraying jet pump |
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