STUDY ON THE PERFORMANCE PARAMETERS OF TWO STAGE EVAPORATIVE COOLING SYSTEM
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Abstract
The Evaporative cooling systems are continuously going modifications for increased efficiency and reduced energy consumption. It is the demand of time to develop energy efficient technology as far as environmental aspects and economic dependency on unconventional sources is concerned. Due to this, the evaporative cooling systems are used for commercial cooling and humidification control of buildings, cold storages, green houses, etc. Two stage indirect/direct evaporative air cooler can provide summer comfort conditions as an environmentally clean, fresh supply air and energy efficient cooling system for the regions where direct system alone is not suitable. In this paper, the performance parameters of Indirect/Direct evaporative cooling system are studied. Effects of various operational and geometrical parameters on cooling performance of this cooling system also have been studied. Results show that indirect/direct cooling systems can provide comfort conditions, which use only water as cooling media and consume much less energy in comparison with conventional vapour compression systems. Additionaly, in certain localities having high humidity the use of evaporative cooling is having limited use. In these situations when evaporative cooling systems are used in conjuction with mechanical vapour compression systems for the precooling of the air, these systems can also have potential to save considerable amount of energy and there by the cost of operation of the equipment.
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