SET Proceedings 2978-4387 Caravel Press 10.65582/set.2010.010 2010.010 Design and Experimental Study of the Dehumidification without Temperature Drop Function in a Room Air-conditioner HanXing ZhangXu LiuJintao LiXiang GaoSiyun KangYue Tongji University, Shanghai, 200092 DHV Engineering Consultancy (Shanghai) Co. Ltd, Shanghai, 200233 Hisense (Shandong) Air-conditioning Co. Ltd, Qingdao, 266000 24082010 9 978-1-995850-04-7 1 10 24 August 2010 © 2010 Copyright WSSET 2010

In southern China, the temperature in transitional season is appropriate but the humidity is so high that people will feel uncomfortable and the goods will get damp, thus, the indoor air needs to be dehumidified without temperature drop. In this paper, a novel dehumidification appliance without temperature drop was brought forward, which could switch between cooling mode and dehumidification mode through valves. Based on the orthogonal experiment, the dehumidification capacity, EER, and energy consumption were studied and fitting equations were given. The results showed that the dehumidification capacity was 1-3 kg/h, which could meet the dehumidification demand of an average residential house. The dehumidification EER was 1-2, and proper assessment of this process should be studied. The outlet temperature of the unit was 1-2.5 centi-grade lower than the inlet temperature, so the unit could be further studied to get a better result.

 Dehumidification without temperature drop Experimental study Indoor condenser Dehumidification capacity 24 to 27 August 2010 9th International Conference on Sustainable Energy Technologies SET2010 9 Shanghai, China China Meteorological Bureau, Tsinghua Univ.. China weather data for building environment analysis.2005 Wu Jipei, Liu Hanfeng, etc..Determination of the best evaporating temperature in high temperature heat pump (in Chinese). Refrigeration technology，2000(1)： 35-38 Ma Yitai, Zhang Jiahui, Ma Yuan. THE OPTIMAL ANALYSIS OF THE DRYING HEAT PUMP SYSTEM (in Chinese). ACTA ENERGIAE SOLARIS SINICA ， 2000，21(2)：208-213 Chua K.J.，CHOU S K. A modular approach to study the performance of a two--stage heat pump system for drying. Applied Thermal Engineering，2005，25：1363 A.S. Huzayyin, S.A. Nada, H.F. Elattar. Air-side performance of a wavy-finned-tube direct expansion cooling and dehumidifying air coil. International Journal of Refrigeration, Volume 30, Issue 2, March 2007, 230-244 Han Xing, Zhang Xu. Study on Dehumidification Capacity of Buildings in Shanghai (in Chinese). Building Science，2009，25（2）：88-91