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不论差压控制式或定时控制式,在风量变动时都产生问题。滤材的粉尘负荷量可用下式计算; D=T·Q·C·η/A(克/米~2) (1) ∵Q=T·V·3600 ∴D=T·V·C·η·3600 (2) D——滤材的粉尘负荷量(克/米~2); T——滤材的通风时问(小时); A——滤材的通风部分面积(米~2); Q——风量(米~3/小时); V——风速(米/秒); C——粉尘浓度(克/米~2); η——粉尘捕集率(%)。理想的卷绕方式是在(2)式中的粉尘负荷量,即风速,粉尘浓度与通风时间的乘积,达到所用滤材的规定容尘量时进行卷绕的方式。所以最好能有累计这个乘积的方法。但对目前所用的滤材的粉尘粒径(一般5微米以上),仍未有简易有效的
Regardless of the differential pressure control type or timing control type, problems arise when the air volume changes. The dust load of the filter material can be calculated by the following formula; D=T·Q·C·η/A (g/m~2) (1) ∵Q=T·V·3600 ∴D=T·V·C·η · 3600 (2) D—Dust loading of filter media (g/m2); T—Ventilation time of filter media (hours); A— Ventilation area of filter media (m~2); Q - air flow (m3/h); V - wind speed (m/s); C - dust concentration (g/m2); η - dust capture rate (%). The ideal winding method is the dust loading in (2), that is, the product of the wind speed, dust concentration and ventilation time, and the method of winding when reaching the specified dust holding capacity of the filter material used. So it’s best to have a way to accumulate this product. However, the dust particle size of the currently used filter media (generally 5 microns or more) has not yet been simple and effective.