Experimental Study on the Performance of a Dew-Point Evaporative Cooling System with a Nanoporous Membrane

In this paper, a plate counter-flow dew-point evaporative cooling system was designed with nanoporous membrane covered on the surface of wet channel for enhancement heat and mass transfer. First, operating principle device theoretical analysis evaporation were discussed in detail. Then, impacts several parameters performance, mainly including inlet air temperature, humidity, velocity, effect utilizing membrane, investigated trials. It found that performance can be improved by using significantly. dry channel, maximum temperature decrease reach 12.5 °C. At high product dropped to lower contributing more significant transfer process. Lower other hand, resulted reduced efficiency. Under condition 50% wet-bulb efficiency 1.09 0.79, respectively. With velocity increasing from 1.5 m/s 2 m/s, outlet would rise, decrease. To achieve better ought limited low speed.