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

Shiva Kumar, Sampath Suranjan Salins, S.V. Kota Reddy and Prasanth Sreekumar Nair

Energy, 2021, vol. 233, issue C

Abstract: 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 analysed 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 ΔDBT, ΔRH, COP and humidification 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 Humidification 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.

Keywords: Climatic conditions; Evaporative cooling; Centrifugal effect; Dynamic; Static; Transient thermal (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:233:y:2021:i:c:s0360544221013840

DOI: 10.1016/j.energy.2021.121136

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