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| Design and application of fine water mist regulation system in large space of local environment |
| Wang Junfeng, Tu Xincheng, Huang Jiwei, Huang Qiaomei |
| (School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China) |
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Abstract The design method of spray system for cooling, humidity adjusting and regulation was proposed. A mathematical model of fine water mist cooling for regulations in large space of local environment which response to the process of water mist diffusion and evaporation was established. Take the case of spray cooling system for special steel arena of the Shanghai Exposition, the result of calculation on the water consumption of system terminal and the humidity evolution revealed that in the process of spray cooling in semi-outdoor environment, the concentration of water vapor increased. The decrease in ambient temperature and saturated moisture could result in the increase of humidity in local environment. It is necessary to control the humidity evolution by using ventilation. The comparison of different ventilation rate indicated that the higher ventilation could accelerate the stabilization of humidity evolution. The ambient humidity could be kept less than 88% by setting the working frequency for spray cooling system terminal. The model was widely used and ignored some non-critical factors, such as moisture and heat gain from human body. The design, optimization and analysis of system were conducted in the engineering of Olympic Games and shedding light on the design of spray cooling system that would be applied in Shanghai Exposition and semi-outdoor environment.
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Received: 06 November 2009
Published: 30 May 2010
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