STUDY ON DIRECT/INDIRECT EVAPORATIVE COOLING AIR-CONDITIONING SYSTEM WITH HEAT RECOVERY ADOPTING HEAT PIPE
This paper presents a two-stage evaporative cooling air-conditioning system combined with direct evaporative cooler and indirect evaporative cooler adopting heat pipe of flat screen wicks, by means of Using three kinds of air handling, which are air flowing through wet film, air flowing through air washer and spraying water onto the condensing end directly. Heat transfer would be enhanced depending on potential difference of temperature and humidity. The experimental results showed that after air was processed by the three types of evaporative cooling, the air temperature drop was 1-3℃ higher than sensible heat transfer only by heat pipe. When dry-bulb temperature of primary air was above 30℃ and adopted the type of spraying water directly, the mean air temperature drop could exceed 6℃ and the heat transfer efficiency could reach 60 percent. To the two-stage evaporative cooling air-conditioning system combined with direct evaporative cooler and heat pipe type indirect evaporative cooler, the cooling efficiency ranged from 60 to 70 percent. When the ambient temperature was 34℃ or above, the temperature drop could be beyond 10 ℃ . By applying the novel, energy-saving and environment-protecting air-conditioning system in industrial and residential buildings would have a good prospect.
X.HUANG J J.ZHENG J M.WU X J.WANG
School of Environmental and Chemical Eng., Xi’an Polytechnic University,Xi’an, 710048, China
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）