Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/50892
Title: Pre-cooling water applied to porous plates of evaporative cooling systems
Other Titles: Efeito do pré-resfriamento da água aplicada em placas porosas de sistemas de resfriamento evaporativo
Keywords: Thermal environment
Air cooling
Air conditioning
Chilled water
Ambiente térmico
Resfriamento de ar
Condicionamento de ar
Issue Date: 2022
Publisher: Universidade Federal de Santa Maria
Citation: FERNANDES, J. L. B. et al. Pre-cooling water applied to porous plates of evaporative cooling systems. Ciência Rural, Santa Maria, v. 52, n. 11, 2022. DOI: 10.1590/0103-8478cr20201015.
Abstract: This study assessed the ways the thermal environment is influenced by pre-cooling the water employed in wetting the porous plates present in the evaporative cooling systems (ECS). The experiment was performed using two physical models constructed on a distorted and reduced scale, which simulated closed agricultural facilities equipped with ECS made up of porous cellulose panels. In one physical model, the plates were made wet using chilled water (ECScw), while in the other they were moistened using natural water, at environment temperature (ECSnw). Both inside the physical models and outside, in the external environment, the air dry-bulb temperature (tdb), black globe temperature (tbg) and air relative humidity (RH) were measured, at 10 sec intervals. Later, the environmental indices, ECSnw cooling effectiveness and ECScw performance factor were assessed. When the porous ECS plates were thoroughly wet using pre-cooled water, lowering of the thermal variables and comfort indices was seen to be greater than when wetting the plates was done using water at room temperature. An empirical equation was proposed to determine the cooling performance factor applied to the ECScw related to water temperature, tdb and air wet-bulb temperature.
URI: http://repositorio.ufla.br/jspui/handle/1/50892
Appears in Collections:DEA - Artigos publicados em periódicos
DEG - Artigos publicados em periódicos

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