| 摘要: |
| 本文研发了一种新型逆流式露点间接蒸发冷却器，并对其冷却性能进行了实验研究。在焓差实验室内模拟干燥地区、中等湿度地区、高湿地区等各种工况条件，对该冷却器的湿球效率、露点效率、制冷量等进行测试分析。结果表明：在标准干燥工况（干球温度38 ℃，湿球温度23 ℃），二次空气/一次空气风量比=1.1条件下，该冷却器湿球效率可达105.6%，露点效率可达76%，制冷量为2.83 kW，干球温度温降幅度可达15.2 ℃。模拟乌鲁木齐与标准干燥环境工况的实验结果表明，露点间接蒸发冷却技术在我国西北炎热干燥地区具有极大的优越性和广阔的应用前景。 |
| 关键词: 露点间接蒸发冷却 实验工况 冷却效率 制冷量 |
| DOI： |
| Received:November 22, 2017Revised:March 17, 2018 |
| 基金项目:国家自然科学基金（51676145）,“十三五”国家终点研发计划（2016YFC0700404）,西安工程大学研究生创新基金（CX201701）资助项目。 |
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| Experimental Study on the Performance of a Countercurrent Dew-point Indirect Evaporative Cooler |
|
Chu Junjie1, Huang Xiang1, Sun Tiezhu1, Geng Zhichao1, Zhang Hong1, He Huaming2
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| (1.School of Environmental & Chemical Engineering, Xi'an Polytechnic University;2.AOLAN（Fujian）Industry Co., Ltd.) |
| Abstract: |
| A new countercurrent dew-point indirect evaporative cooler was developed, and its cooling performance was experimentally studied in this work. The wet-bulb efficiency, dew-point efficiency, and cooling capacity of the cooler were tested and analyzed under various working conditions simulating dry area, moderate-humidity area, and high-humidity area in an enthalpy-difference laboratory. The experimental results show that the wet-bulb efficiency reached 105.6% and the dew-point efficiency reached 76% under standard drying conditions (dry-bulb temperature 38 ℃ and wet-bulb temperature 23 ℃) and air-flow ratio of secondary air/primary air = 1.1. The cooling capacity was tested as 2.83 kW, and the dry-bulb temperature decrease of the cooler reached 15.2 ℃. By the experimental results simulating the working conditions of Urumqi and standard dry environment, the dew-point indirect evaporative cooling technology shows many advantages and broad application prospects in the hot and dry areas in northwestern China. |
| Key words: dew point indirect evaporative cooling test conditions cooling efficiency refrigerating capacity |
