Study On Filtration Performance Of Evaporative Cooling Pad

This paper took the paper-based corrugated packing as the research object on the base of filtration efficiency calculation model of Evaporative cooling presented by Helmut Paschold.The calculation model were established combined with wet dust filtration theory. We took a considering of the effect on dust removal efficiency of packing channel between turbulence diffusion in this model so it was more accord with the actual situation of packing dusting efficiency. Comparing the measurement data of Helmut Paschold with test data to verify the accuracy of the calculation model. Analyzed the changing trend of dust removal efficiency of evaporative cooling filter under the different operating conditions, the structure parameters.Through constructing test equipment, dust removal efficiency of evaporative cooling filler were tested under the condition of circulating water. Adjust the water spray, the wind speed and thickness of packing, packing corrugated factors such as height, the angle of the corrugated packing, testing the concentration of dust particles of packing import and export.according to the measured data, calculated the dust removal efficiency of different particle size of dust(1 μm, 2.5 μm and 5 μm, 10 μm). Drawing the efficiency curve of different factors and packing, in order to study the effect of these parameters on the dust removal performance.This paper indicated that the evaporative cooling packing has good filtration purification performance. For example, with 500 L/h spay and thickness of 100 mm,the filtration efficiency of CELdek7090 as flows : 1-3 μm of dust removal efficiency is 6.9%;3-5μm of dust removal efficiency is 15.3%; For 5 to 10 μm of dust removal efficiency is25.4%;> 10 μm of the dust removal efficiency is 32.7%.