多孔陶瓷管式露点间接蒸发冷却器实验研究  

Experimental Study on Porous Ceramics Tube Type Dew Point Indirect Evaporative Cooler

作　　者：毛秀明[1] 黄翔[1] 文力[1] 

机构地区：[1]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《建筑科学》2010年第4期57-61,74,共6页Building Science

基　　金：国家自然科学基金资助项目(50846056)

摘　　要：为了解决管式间接蒸发冷却器壁面的亲水性问题,笔者在多孔陶瓷管式露点间接蒸发冷却器实验台上通过实验的方法对该冷却器的二次/一次风量比、淋水量以及一次空气侧压降进行了实验研究。结果表明:一次风量为500m3/h时,最佳二次/一次风量比为0.9,此时效率达到35.4%,温降达到4℃;在二次/一次风量比为0.9的工况下,淋水量越小,冷却器的效率和温降越高,在淋水量为0L/h时,冷却器的效率和温降达到最大,并且冷却器效率和温降可稳定维持100min,在淋水量为150L/h工况下,连续喷水5min可以将多孔陶瓷管充分湿润,大大缩减了喷水时间,可真正实现间歇供水,节水节能;冷却器一次空气侧压降随着一次风量的增大而增大,一次风量为500m3/h时,压降为118Pa。To improve the hydrophilic of tube type indirect evaporative cooler wall surface,the experimental study was carried out with the porous ceramics tube type dew point indirect evaporative cooler test rig.The ratio of the secondary and primary air volumes,the water spray volume and the primary air-side pressure drop of the cooler were discussed.The results demonstrated that the best ratio of the secondary and primary air volumes was 0.9 when the primary air volume was 500 m^3 /h.Under this condition,the efficiency of the cooler could reach at 35.4%,and the temperature drop of the cooler could reach at 4 ℃.When the ratio of the secondary and primary air volumes was 0.9,the smaller the water spray volume,the higher the efficiency and temperature drop.When the water spray volume was 0 L/h,the efficiency and temperature drop would get the highest values,and could remained 100 min.When the water spray volume was 150 L/h,water spray of 5 min could wet the porous ceramics tube completely,hence a large amount of water spray time was reduced,and intermittent water supply was truly realized.Besides,the larger the primary air volume,the higher the primary air-side pressure drop,and the pressure drop was 118 Pa when the primary air volume was 500 m^3 /h.

关 键 词：管式间接蒸发冷却器 多孔陶瓷 亲水性 效率 实验研究 

分 类 号：TU831.4[建筑科学—供热、供燃气、通风及空调工程]