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| Numerical simulation of influence of air cooling tower on atmospheric environment temperature and humidity |
| CHEN Hou-jiang1, LIAO Chuan-hua1, WANG Yin-feng1, WANG Xiao-jun2,3 |
1. School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816, China;
2. State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China;
3. Research Center for Climate Change of Ministry of Water Resources, Nanjing 210029, China |
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Abstract An air cooling tower model was developed with FLUENT tosimulate the heat transfer between air cooling tower and ambient atmospheric environment under different outlet temperature, ambient temperature, and crosswind velocity. The results showed that both outlet temperature and ambient temperature have significant effects in the heat transfer process.When the outlet temperature rose to 328K, the air temperature near the air cooling tower rose by 6.22K, its relative humidity decreased from 47.7% to 31.78%, and the degree of air dryness increased; Meanwhile, the heat transfer effect was enhanced with the increase of the temperature difference between the ambient and the exhaust gas, e.g. the air dryness in winter was the highest, followed by spring and autumn, and the lowest in summer. In addition, the crosswind velocity showed a significant effect on the heat transfer area. When thecrosswind velocity was 7m/s, the heat exchange affected area can reach 11.17km, and the relative humidity of the air cooling tower was reduced from 47.7% to 39.47%.
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Received: 05 May 2019
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