流体机械

2019, v.47;No.562(04) 54-58

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淋水密度对多孔陶瓷管式间接蒸发冷却器湿球效率影响的试验研究
Experimental Study on the Effect of Spray Density on Wet Bulb Efficiency of Porous Ceramic Tubular Indirect Evaporative Cooler

孙铁柱;黄翔;魏敬茹;唐松标;胡家利;
Sun Tiezhu;Huang Xiang;Wei Jingru;Tang Songbiao;HU Jia-li;Xi'an Polytechnic University;

摘要(Abstract):

针对目前间接蒸发冷却器材料吸水性较差,只能采用连续布水方式使湿通道表面保持湿润。为此开发了一种多孔陶瓷管式间接蒸发冷却器,利用多孔陶瓷丰富的比表面积来增大水膜与工作空气的接触面积;利用其较好的吸水性快速蓄水,实现间接蒸发冷却器的间歇性淋水,缩短循环水泵运行时间。本文针对淋水密度对多孔陶瓷管式间接蒸发冷却器湿球效率的影响进行了试验研究,结果表明:在多孔陶瓷管完全湿润的情况下,淋水密度越小,湿球效率越高;淋水密度为8.8kg/(m·h),泵连续运行10 min,陶瓷管壁可完全侵透,水泵停止间隔100 min期间,冷却器的湿球效率最高,而且波动不大,相比传统连续布水方式,节约水泵能耗90%。
In view of the poor water absorption of the materials for the indirect evaporative cooler,continuous water distribution can only be used to keep the wet channel surface moist. For this reason,a kind of indirect evaporative cooler with porous ceramic tube was developed. The abundant specific surface area of the porous ceramic was used to increase the contact area of the water film with the working air,and by using its better water absorption and rapid water storage,the intermittent water spraying of the indirect evaporative cooler can be realized so as to shorten the running time of the circulating water pump. Experimental study was conducted on the influence of water spray density on wet bulb efficiency of porous ceramics tubular indirect evaporative cooler in this paper. The results show that under the condition of completely wet porous ceramic tube,the smaller the water spray density,the higher the efficiency of wet bulb efficiency. When the water spray density is 8.8 kg/(h·m) and the pump runs continuously for 10 minutes,the ceramic tube wall can be completely wetted. During the stop interval of 100 minutes of the pump,the cooler has the highest wet bulb efficiency,and the fluctuation is not big,compared with the traditional continuous water spray way,the energy consumption of the water pump can be saved by 90%.

关键词(KeyWords): 多孔陶瓷;间歇式布水;节能;间接蒸发冷却器
porous ceramics;intermittent shower;energy conservation;IEC

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基金项目(Foundation): 国家自然科学基金面上项目(51676145)

作者(Author): 孙铁柱;黄翔;魏敬茹;唐松标;胡家利;
Sun Tiezhu;Huang Xiang;Wei Jingru;Tang Songbiao;HU Jia-li;Xi'an Polytechnic University;

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