EXPERIMENATAL INVESTIGATION OF THERMAL CHARACTERISTICS ONCROSS FLOW TUBULAR HEATEXCHANGER FOR INDIRECT EVAPORATIVE COOLING
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Abstract
The demandfor cooling system increases worldwide. Indirect Evaporative cooling can be used to cool air from the surface of heat exchanger without change in humidity. As there is no contact between water and air due to cross flow heat exchanger. Primary air stream is cooled by secondary air stream after evaporation of water in wetted surface of cross flow tubular heat exchanger made of PVC pipe and tested it in summer condition. By measuring humidity and DBT thermal characteristic such as cooling capacity, heat transferred per unit time, wet bulb effectiveness, COP, Dew point effectivenessis calculated.Temperature difference between inlet temperature (from atmosphere) and outlet temperature (to room) up to 8 to 10 ºCis achievedwith constant Humidity.
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