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

Kumar, Shiva and Salins, Sampath Suranjan and Reddy, Kota S V and Nair, Prasanth Sreekumar (2021) Comparative performance analysis of a static & dynamic evaporativecooling pads for varied climatic conditions. Energy, 233. ISSN 0360-5442

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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 DDBT, DRH, 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.

Item Type: Article
Uncontrolled Keywords: Climatic conditions Evaporative cooling Centrifugal effect Dynamic Static Transient thermal
Subjects: Engineering > MIT Manipal
Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 09 Dec 2021 10:11
Last Modified: 09 Dec 2021 10:11
URI: http://eprints.manipal.edu/id/eprint/157702

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