The research and application of spray cooling technology in Shanghai Expo
The research and application of spray cooling technology in Shanghai Expo
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上海世博会喷雾冷却技术的研究与应用
DOI：
10.1016/j.applthermaleng.2011.03.039
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发表时间：
2011-12
影响因子：
6.4
通讯作者：
Yang, Yang
中科院分区：
文献类型：
--
作者：
Huang, Chen;Ye, Dafa;Zhao, Huizhong;Liang, Tao;Lin, Zhifen;Yin, Hang;Yang, Yang
利用中国气象局发布的典型年天气资料和典型年最高气温资料，对喷雾降温技术在2010年上海世博会上的应用效果进行了预测分析。日本的实验结果被认为是喷雾冷却有效性的依据，即当温度在30℃以上，相对湿度低于70%时，高压喷雾冷却可以获得1~2℃的降温效果。通过分析世博会期间1840h的天气资料，结果表明，对于典型年和最高气温典型年，喷雾冷却的有效时间预测为173-426h，世博会期间的气象监测数据表明，喷雾冷却的实际有效时间为387h，2010年的实际气候特征与采用的最高温度典型年的天气资料非常接近。同时，对世博会期间的WBGT指数进行了预测和分析。将喷雾降温技术应用于上海某住宅展馆，对喷雾降温效果及喷雾系统的压力、流动特性进行了论证。从实验结果可以得出结论，当环境温度为35℃，相对湿度为45%左右时，各测点的气温最多可降低5-7℃。大部分地区的相对湿度都在70%以下。喷雾区的喷雾冷却效率可达65%，局部喷雾冷却效率最高可达80%。当水压大于5.5 Mpa时，高压喷雾系统的COP大于30。此外，喷雾区各测点的WBGT可降低3.5-5.2℃。2010年7月，世博轴喷雾冷却的两个实验结果表明，当环境温度为34-40℃，相对湿度为32-55%时，喷雾柱1米范围内最多可降低气温6-12℃，3米范围内平均可降低1.5-4℃。研究和实验表明，上海世博会期间应用的喷雾冷却技术是非常有效的。
In this paper, the weather data (issued by the China Meteorological Administration) of typical year and highest temperature typical year are adopted to predict and analyze the effect of applying spray cooling technology to 2010 World Expo in Shanghai. The experimental results from Japan are considered as the grounds of argument for effectiveness of spray cooling, namely when temperature is above 30 °C and relative humidity is below 70%, the decrease of 1–2 °C can be gained after high-pressure spray cooling. By analyzing the weather data of 1840 h during the Expo, the results show that,for typical year and highest temperature typical year, the effective time for spray cooling are predicted to be 173–426 h. The meteorological monitoring data during the Expo show that the actual effective time for spray cooling are 387 h. The actual climatic characteristics in 2010 are extremely close to the adopted weather data of highest temperature typical year. Meanwhile, the WBGT index during the Expo is predicted and analyzed in this paper. After applying the spray cooling technology to a residential pavilion in Shanghai, the cooling effect and pressure and flow characteristics of spraying system are demonstrated in this paper. Conclusion can be drawn from the experimental results that when ambient temperature is 35 °C and relative humidity is about 45%, the air temperature of each measuring point can be reduced by 5–7 °C at most. The relative humidity in most regions is below 70%. Furthermore, the spray cooling efficiency of spraying area can be up to 65% and the partial spray cooling efficiency can reach 80% at most. The COP of high-pressure spray system is over 30 when water pressure is greater than 5.5 Mpa. Besides, the WBGT of each measuring point in spraying area can be reduced by 3.5–5.2 °C. In July 2010, the two experimental results of spray cooling in the Expo Axis show that when ambient temperature is 34–40 °C and relative humidity is 32–55%, the air temperature can be reduced by 6–12 °C at most within the range of 1 m from spray column, and by 1.5–4 °C on average within the range of 3 m, by 0.5–1.5 °C at least within the range of 7 m. The research and experiments indicate that the spray cooling technology applied during Shanghai Expo is very effective.
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影响因子：
6.4
作者：
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通讯作者：
R. Sureshkumar;S. R. Kale;P. Dhar
影响因子：
6.4
作者：
R. Sureshkumar;S. R. Kale;P. Dhar
通讯作者：
R. Sureshkumar;S. R. Kale;P. Dhar
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通讯作者：
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作者：
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通讯作者：
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