| 喷雾降温外场试验结果的初步分析 |
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| 引用本文： | 何泽能,钟志华,高阳华,陈志军,杨雪梅.喷雾降温外场试验结果的初步分析[J].气象科学,2014,34(4):435-442. |
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| 作者姓名： | 何泽能 钟志华 高阳华 陈志军 杨雪梅 |
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| 作者单位： | 重庆市气象科学研究所, 重庆 401147;重庆市科学技术委员会, 重庆 401147;重庆市气象科学研究所, 重庆 401147;重庆市气象科学研究所, 重庆 401147;重庆市气象科学研究所, 重庆 401147 |
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| 基金项目： | 重庆市自然科学基金院士专项（CSTC2011JJYS20001）;重庆市自然科学基金（CSTC2012JJA20015）;重庆市气象局青年基金（QNJJ-201109）;重庆市气象局开放式研究基金（KFJJ-201202） |
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| 摘 要： | 利用重庆市2011年盛夏高温天气,开展了喷雾降温改善局部小气候的外场试验。试验结果表明:高温天气下,在广场上进行喷雾具有明显降温、改善人体舒适度的效果。降温幅度上午小,下午大。喷雾降温效果存在明显的垂直梯度变化,地表温度降幅最大,1.5 m气温次之,2.2 m气温降幅最小。喷雾工艺条件对降温效果有明显影响,喷头型号不同,地表温度的降幅差别较大,但各高度层降温效果差别不大。喷雾"喷-停"循环时间的长短与喷雾区域温度的变化有明显联系,喷的时间越长,喷雾区域温度降低的幅度就越大。环境风场状况对喷雾降温效果也有明显影响。本试验中,受试验场地周围环境影响,偏东风比偏西风条件下的降温效果好,喷雾降温效果总体随风速的增大而有所降低。
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| 关 键 词： | 喷雾降温 外场试验 盛夏高温 |
| 收稿时间： | 2012/11/12 0:00:00 |
| 修稿时间： | 6/2/2013 12:00:00 AM |
Preliminary analysis on field test of spray cooling technology |
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| HE Zeneng,ZHONG Zhihu,GAO Yanghu,CHEN Zhijun and YANG Xuemei.Preliminary analysis on field test of spray cooling technology[J].Scientia Meteorologica Sinica,2014,34(4):435-442. |
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| Authors: | HE Zeneng ZHONG Zhihu GAO Yanghu CHEN Zhijun and YANG Xuemei |
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| Institution: | Chongqing Institute of Meteorological Sciences, Chongqing 401147, China;Chongqing Science & Technology Commission, Chongqing 401147, China;Chongqing Institute of Meteorological Sciences, Chongqing 401147, China;Chongqing Institute of Meteorological Sciences, Chongqing 401147, China;Chongqing Institute of Meteorological Sciences, Chongqing 401147, China |
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| Abstract: | The field test of spray cooling technology was carried out in order to improve the local climate in the high-temperature days in the summer of Chongqing in 2011. The results show that mist spray on the public square in high-temperature weather can decrease the temperature and improve the human body comfort index obviously. The cooling-down range was limited in the morning but wide in the afternoon. An obvious vertical change existed in cooling effects, the widest cooling-down range was on the ground surface, the second was at 1.5 m and the minimum was at 2.2 m. The influence of spray technics on cooling effects was evident. Different types of nozzle head had different effects on the reducing scope of ground surface temperature, but had no effects on the air temperatures at other altitudes. There existed obvious relation between cycle time of "spray-stop" and the change of environment temperature. The longer the spray time was, the larger the declining scope of environment temperature was. The cooling effects depended evidently on the environment wind field. In this test, the cooling effects were better under easterly wind than those under westerly one. Moreover, in general the cooling effect reduced with the acceleration of wind speed. |
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| Keywords: | Spray cooling Field test Summer high temperature |
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