Experimental Study on Particle Distribution under Stratified Air-conditioning in Large Space Building
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Particle concentration distribution rule in large space building under HVAC system is very important, because that is related to particle removal solution design. This paper mapped particle concentration distribution in a large space factory under stratified air condition system. The results shows that: large particle concentration shows significant variation along vertical direction, with a max difference of 8 times; the highest particle concentration appears at the height of 1.5 m of all particle sizes; relatively low particle concentration appears between 3 and 6 m; and, a relatively high value appears between 7 and 9 m, which seems to tell there is a stagnation zone of large particles at this height. Nozzle side supply air shows better particle spatial remove efficiency than columnar down supply air.
KeywordsLarge space Vertical particle distribution Stratified air-condition system
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