Use which effectively filter efficiency in most save running cost? Bo shi purification in detail for you. For atmospheric dust particle size is greater than 1.0 um particle counting efficiency is greater than or equal to 20% and less than 70% of efficient filter in the filter is called. Medium efficiency filter for table 1 F5 F9 range, effectively filter is mainly used for filtering in 1 a 5 um um dust particles. Efficient filter bag and box type, combined type, etc According to the shown in table I, was elected F7 above level effectively filter, can filter dust particles to more than 90% of the 1 um. For atmospheric dust, F7 filter weight efficiency can reach above 98%; Practice proved that the Ming F7 above the efficiency of the filter, without any cleaning ventilation system. In general, the average per m3 / h takes about 0.05 m2 of ventilation air duct area; Under normal use, F5 efficiency filter, the ventilation system at least once every five years should be clean; Cleaning fee (50 yuan/m2); Use with colorimetry in 80 a 90%) above the efficiency of the filter, without any cleaning ventilation system.

Cleaning the cost calculation, in a 24 * 24 standard rating of the filter air volume of 3600 m3 / h. A cleaning fee (3600 * 0.05 * 50 = 900 (RMB). Cleaning once every 10 years, the average cost of cleaning should be 90 yuan/year (). Therefore, it can be seen that cleaning cost is much higher than used to improve the grade of filter the costs of the other, use good filter also can maintain the efficiency of the fan operation also is to save operating cost.

E = Q * P * t/n * 1000

E = fan energy consumption (kWh/year)

Q = volume (m3 / s)

P = total pressure fan (Pa)

T = running time (hours/year)

N = fan operation efficiency

Fan operation cost calculation, assumption:

P = 800 pa

Q = 3600 m3 / h = 1 m3 / s

T = 365 days * 24 hours/day/year = 8760 hours

Adopt the F7 efficiency filters, fan operation efficiency to maintain 0.7.

E = 8760/0.7 * 1.0 * 800 * 1000 = 1000 Kwh/year

The F5 following the efficiency of the filter, the fan efficiency dropped to 0.65 0

E = 8760/0.65 * 1.0 * 800 * 1000 = 1000 KWH/year

Efficient filter by it can be not only does not increase the operation cost, but also can make to maintain high efficiency fan operating, save energy consumption:

10781 - a - 10011 = 770 Kwh/year

F7 filter resistance higher than F5 filter 4 opa, so more energy consumption:

E = 1.0 * * 40 * 1000 = 1000 Kwh/year 8760/0.7 < 770 Kwh/year