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
|
摘要
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%.
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%.
引文
[1]褚俊杰,黄翔,孙铁柱.国内外露点间接蒸发冷却技术研究新进展[J].流体机械,2017,45(9):71-76.
[2]褚俊杰,黄翔,孙铁柱.露点间接蒸发冷湿通道侧材料亲水性研究[J].棉纺织技术,2018,46(1):40-44.
[3]毛秀明,黄翔,文力.多孔陶瓷管式露点间接蒸发冷却器的设计计算[J].东南大学学报(英文版),2010,26(2):205-208.
[4]毛秀明,黄翔,文力.多孔陶瓷管式露点间接蒸发冷却器试验研究[J].建筑科学,2010,26(4):57-74.
[5]毛秀明.多孔陶瓷管式露点间接蒸发冷却器的研究[D].西安:西安工程大学,2010.
[6]胡士松,刘伟,章玮玮,等.单相阶段板式多喷嘴阵列喷雾冷却的试验研究[J].流体机械,2015,43(7):1-5.
[7]黄翔.蒸发冷却通风空调系统设计指南[M].北京:中国建筑工业出版社,2016.
[8]黄翔.蒸发冷却空调理论与应用[M].北京:中国建筑工业出版社,2010.
[9]严政,黄翔,鞠昊宏,等.岗亭用蒸发冷却空调的开发及应用研究[J].流体机械,2017,45(10):72-76.
[10]Fenghao Wang,Tiezhu Sun,Xiang Huang,et al.Experimental research on a novel porous ceramic tube type indirect evaporative cooler[J].Applied Thermal Engineering,2017,23(5):1191-1199.
[11]孙铁柱,黄翔,罗绒.采用不同二次空气时转轮式间接蒸发冷却器的性能试验研究[J].流体机械,2015,43(5):65-69.
[12]罗绒,黄翔,靳贵铭.转轮式两级蒸发冷却空调机组的试验研究[J].流体机械,2013,41(1):63-67.
[2]褚俊杰,黄翔,孙铁柱.露点间接蒸发冷湿通道侧材料亲水性研究[J].棉纺织技术,2018,46(1):40-44.
[3]毛秀明,黄翔,文力.多孔陶瓷管式露点间接蒸发冷却器的设计计算[J].东南大学学报(英文版),2010,26(2):205-208.
[4]毛秀明,黄翔,文力.多孔陶瓷管式露点间接蒸发冷却器试验研究[J].建筑科学,2010,26(4):57-74.
[5]毛秀明.多孔陶瓷管式露点间接蒸发冷却器的研究[D].西安:西安工程大学,2010.
[6]胡士松,刘伟,章玮玮,等.单相阶段板式多喷嘴阵列喷雾冷却的试验研究[J].流体机械,2015,43(7):1-5.
[7]黄翔.蒸发冷却通风空调系统设计指南[M].北京:中国建筑工业出版社,2016.
[8]黄翔.蒸发冷却空调理论与应用[M].北京:中国建筑工业出版社,2010.
[9]严政,黄翔,鞠昊宏,等.岗亭用蒸发冷却空调的开发及应用研究[J].流体机械,2017,45(10):72-76.
[10]Fenghao Wang,Tiezhu Sun,Xiang Huang,et al.Experimental research on a novel porous ceramic tube type indirect evaporative cooler[J].Applied Thermal Engineering,2017,23(5):1191-1199.
[11]孙铁柱,黄翔,罗绒.采用不同二次空气时转轮式间接蒸发冷却器的性能试验研究[J].流体机械,2015,43(5):65-69.
[12]罗绒,黄翔,靳贵铭.转轮式两级蒸发冷却空调机组的试验研究[J].流体机械,2013,41(1):63-67.