复合抛物面聚光太阳能加湿除湿脱盐系统研究

STUDY ON SOLAR HUMIDIFICAITON DEHUMIDIFICATION DESALINATION SYSTEM DRIVEN BY COMPOSITE PARABOLIC CONCENTRATOR

为提高装置热利用效率,减少外部换热环节减少热损失、减少盐垢、提高集热器使用寿命,研究一种利用复合抛物面聚光器(CPC)为系统供能,建造小型太阳能海水淡化系统。实验研究发现:在系统稳态条件下,系统产水量一天可达7908 g,最高小时产水量在12:00达861 g/h,脱盐率达99.9%以上,瞬时系统装置性能GOR(gained output ratio)最高为1.14,最高瞬时有用能为1114.9 W,在太阳辐照度达到最高1072 W/m^(2)时,此时加湿箱湿度达到最大湿度为97%,11:30—16:00加湿箱湿度一直在90%以上。

In order to improve the thermal utilization efficiency of the device and the service life of the collector,at the same time reduce the heat loss in the external heat transfer process and salt scaling in device,this paper studies a small solar seawater desalination system driven by CPC solar collector.Experimental findings:under steady-state conditions,the system can produce freshwater 7908 g/d,maximum hourly yield reaches 861 g/h at 12:00 noon and salt removing rate reaches 99.9%above,and the highest instantaneous performance coefficient GOR(gained output ratio)reaches 1.14,and the highest instantaneous useful energy reaches 1114.9 W,from 11:30-16:00,the humidity of humidification chamber is always more than 90%.When the maximum solar irradiance reaches the maximum 1072 W/m^(2),the maximum humidity of humidification chamber is 97%.