| 摘要: |
| 全管束配水方式的特点是对每根工艺管单独配水。实验研究了喷淋水量和迎面风速对全管束配水蒸发式冷凝器管外流动阻力的影响，并与常规集中配水方式进行了对比。实验是在喷淋量为0.5~1.2 m3/h，迎面风速为0.5~4.0 m/s下进行。结果表明，在顺流及逆流状态下，喷淋量为1.2 m3/h时，全管束配水蒸发式冷凝器管外空气流动阻力比集中配水蒸发式冷凝器，平均减少11.5%及49.7%。当逆流流动时，全管束配水空气流动阻力突增点的迎面风速为3.5 m/s，高于集中配水蒸发式冷凝器。全管束配水蒸发式冷凝器与常规蒸发式冷凝器相比，应用于制冷系统中可节能2%左右。 |
| 关键词: 蒸发式冷凝器 配水方式 管外流动阻力 实验研究 |
| DOI： |
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| 基金项目: |
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| Experimental Study on Air Flow Resistance of an Evaporative Condenser with Water Distributed on Every Tube |
| Li Taiyu,Ouyang Xinping |
| (School of Energy and Power Engineering, University of Shanghai for Science and Technology) |
| Abstract: |
| The advantage of water distributed on every tube structure is that water can be distributed on every tube respectively. The influences of the spray water flow rate and the air velocity on the air flow resistance of evaporative condenser with water distributed among the whole tube bundle structure were investigated, and conventional spraying water structure was also adopted to be compared. The experiment was carried out on the condition that the water flow rate was 0.5~1.2 m3/h and the air velocity was 0.5~4.0 m/s. The results show that the air flow resistance of this new structure decreases 11.5% at parallel-flow mode and 49.7% at counter-flow mode respectively. In addition, at counter-flow mode, the air flow resistance increases suddenly when the air velocity is 3.5m/s, which is higher than that of traditional evaporative condenser. Energy-save is about 2%, comparing with the conventional spray water structure when used in refrigeration system. |
| Key words: evaporative condenser water distributed type flow resistance experimental investigation |
