DEVELOPMENT AND EXPERIMENTAL INVESTIGATION OF A ROTARY WHEEL INDIRECT EVAPORATIVE COOLING SYSTEM


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Arica S. O. , HORUZ İ.

ISI BILIMI VE TEKNIGI DERGISI-JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY, vol.41, no.2, pp.167-178, 2021 (SCI-Expanded) identifier

Abstract

In this study, the system which provides cooling of a place by using indirect evaporative cooling system is developed and experimentally analyzed. Fresh and hot air blown by fan from outside environment and cool indoor air are mixed in certain proportions and blown to the rotary wheel's exterior surface. The indoor air is cooled by the humidifiers before entering the rotary wheel via direct evaporative cooling. So the rotary wheel works as a heat exchanger between the indoor and outside air without mixing. By cooling the outside of the rotary wheel, the cool air enters the cross flow heat exchanger. It is allowed to cool again with the indoor air passing through the rotating wheel and being moisturized twice. In this way the room is kept comfortable. According to the results of the experiments, it is observed that the highest COP value of 2,72 is obtained when mixing 20 % fresh air and 80 % indoor air. Although this value is lower than the theoratically calculated , if leakproofing and insulation can be managed it is clear that COP value can be much .