Experimental investigation of evaporative cooling systems for agricultural storage and livestock air-conditioning in Pakistan  

作　　者：Hafiz M.U.Raza Muhammad Sultan Majid Bahrami Alamgir A.Khan 

机构地区：[1]Department of Agricultural Engineering,Bahauddin Zakariya University,Bosan Road,Multan 60800,Pakistan [2]Laboratory for Alternative Energy Conversion(LAEC),School of Mechatronic Systems Engineering,Simon Fraser University,Surrey,BC,Canada [3]Department of Agricultural Engineering,Muhammad Nawaz Shareef University ofAgriculture,Multan 60000,Pakistan

出　　处：《Building Simulation》2021年第3期617-631,共15页建筑模拟（英文）

基　　金：funded by Bahauddin Zakariya University,Multan,Pakistan under the Director Research/ORIC grant entitled“Development and performance evaluation of prototypes of direct and indirect evaporative cooling-based air-conditioning systems”。

摘　　要：Evaporative cooling(EC)is an ancient technique that is usually suitable for hot and dry climatic conditions due to the potential of water vapor evaporation.In this study,three kinds of evaporative cooling systems such as direct EC(DEC),indirect EC(IEC),and Maisotsenko cycle EC(MEC)were locally developed at lab-scale.The performance of the systems was evaluated and compared for agricultural storage and livestock air-conditioning application in Pakistan.The experiments were performed for climatic conditions of Multan city(Pakistan)and the data were collected for hourly and daily basis.According to the results,it was observed that the DEC system has the ability to reduce the temperature of ambient air to an average of 8.5℃.Whilst IEC and MEC systems were able to drop the temperature of ambient air to an average of 6.8℃and 8.9℃,respectively.As per the results,the DEC system remained behind to provide desired conditions for livestock and agricultural product storage applications due to excessive humidity.On the other hand,the IEC and MEC systems can achieve the desired conditions for livestock application,but could not provide feasible conditions for various fruits and vegetable storage.The study concludes that hybrid EC systems can be developed to provide desired conditions for a wide range of applications under varying climatic conditions.

关 键 词：evaporative cooling AIR-CONDITIONING dew-point WET-BULB STORAGE LIVESTOCK 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]