| 摘要: |
| 通过实验分别测试了箱壁式冰箱在冷凝管水平布置和竖直布置方式下的能效比，并且对实验工况下水平管和竖直管管内的冷凝换热系数进行了理论计算。结果表明：尽管理论计算结果显示水平管布置方式的管内冷凝换热系数高出竖直管布置方式较多，但实验结果显示两者整体传热性能相差极小。总体来说，采用水平管布置方式的冰箱的能效比仅高出约2%，箱壁式冰箱冷凝器的主要换热热阻在管外空气侧，这两种布置方式导致的管内换热的差异对箱壁式冰箱的整体换热性能影响不大。 |
| 关键词: 冰箱 箱壁式冷凝器 管排列方式 冷凝换热系数 |
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| Influence of Condensation Copper Tube Arrangement on the Heat Transfer Performance for Hot-wall Refrigerator |
| Li Qian,Ouyang Xinping |
| (Institute of Refrigeration and Cryogenics, University of Shanghai for Science and Technology) |
| Abstract: |
| Experiments are carried out separately under horizontal condensation tube arrangement and vertical condensation tube arrangement to examine energy efficiency ratio of hot-wall refrigerator. Theoretical calculations are made to analyze in-tube condensation heat transfer coefficients of horizontal and vertical tubes under the experimental conditions. The results show that: although the theoretical calculations of the in-tube condensation heat transfer coefficients of horizontal tubes are much higher than that of vertical tubes, but the experiment results indicate that there is a smaller difference on the whole heat transfer performance. Generally speaking, the energy efficiency ratio of horizontal tube arrangement is just about 2% higher, the outside air’s heat resistance plays a main role in hot-wall condenser, and the in-tube heat exchange difference caused by two tube arrangements has a small effect on the general heat transfer performance for hot-wall refrigerator. |
| Key words: refrigerator hot-wall condenser tube arrangement condensation heat transfer coefficient |
