Experimental Evaluation of a Multistage Reciprocating Evaporative Cooler Performance for Varied Climatic Conditions  

作　　者：Sampath SURANJAN SALINS S.V.KOTA REDDY Shiva KUMAR 

机构地区：[1]School of Engineering and IT,Manipal Academy of Higher Education,Dubai Campus,Dubai,PO 345050,UAE [2]Mechanical Engineering Department,VIT-AP University,Amaravati,Andra Pradesh,52223,India [3]Department of Mechanical and Manufacturing Engineering,Manipal Institute of Technology,Manipal Academy of Higher Education,Manipal,576104,India

出　　处：《Journal of Thermal Science》2023年第4期1523-1535,共13页热科学学报（英文版）

摘　　要：Current system focuses on design&construction of a multistage reciprocating evaporative cooling test rig.Four packings that are used will undergo the reciprocating action,powered by the cam follower mechanism maintained at an actual rotation speed.Inlet dry bulb temperature&humidity values are varied to replicate the varying climatic conditions,and the output parameters such as cooling load,evaporation rate(ER),humidification efficiency(HE),coefficient of performance(COP)are obtained.Output results showed that as inlet humidity raises,the performance of system drops.With the rise in the camshaft speed or packing velocity,there is an upsurge in the performance until a cam speed of 10 r/min or packing velocity of 0.083 m/s and with further increases in the value,overall performance drops.The system gave a maximum COP,ER,and HE equal to 3.80,73.87%,and 0.53 g/kg respectively.A rise in the inlet air temperature yielded a maximum change in dry bulb temperature of 8.2℃.Overall,results indicated that evaporative cooling is more effective in arid climates than the cold and humid climates.Air quality test is performed to measure CO_(2),Total Volatile Organic Compound(TVOC),and Formaldehyde(HCHO),and it is found that humidified air entering the defined space is of excellent quality.

关 键 词：multistage humidifier evaporative cooling reciprocating packing humidification efficiency 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]