Comparative performance analysis of a static & dynamic evaporative cooling pads for varied climatic conditions

Evaporation significantly reduce the temperature of the space and it mainly depends on the external climatic conditions. Current work focuses on the development of an evaporative cooling unit to study the performance of the system for varying ambient conditions. A novel centrifugal evaporative cooling unit is constructed which consists of a cylindrical pad structure. Both static and dynamic conditions are ana-lysed with the variation of water flow rate (WFR), air flow rate, and inlet relative humidity (RH). Rate of evaporation (ER), cooling effect, coefficient of performance (COP)and energy consumption (EC) for both stationary and dynamic packing for varying input conditions have been accessed. Experimental result indicated that, with the increase in the air flow rate, there is a drop in the DDBT, DRH, COP and hu-midification efficiency and a rise in the evaporation rate. Output parameters improve till a water flow rate of 0.6 LPM, there afterwards performance deteriorated. Maximum evaporation rate and Humidifi-cation efficiency (HE) obtained by the system are 2 g/s & 81.11% respectively. Transient analysis indicated that the dynamic packing achieved the thermal comfort faster than the static packing. Overall, Dynamic packing gave better performance compared to static packing and it is found that performances are highly dependent on the climatic conditions. (c) 2021 Elsevier Ltd. All rights reserved.

Automated summary

The study introduces the development and performance testing of an evaporative cooling unit. Results show that the system's performance, including evaporation rate, cooling effect, coefficient of performance, and energy consumption, are affected by different input conditions. The experimental findings indicate that the system's performance decreases with increasing air flow rate, and the optimal performance is achieved at a water flow rate of 0.6 LPM; dynamic packing achieves thermal comfort faster compared to static packing.