High-temperature dust bag High efficiency filter bag life T0 is in accordance with the rated air flow Q0 under the final resistance increased to equal to the initial resistance of the predetermined multiple (usually 2 times) when the time, when high temperature dust bag high efficiency air filter capacity The amount of dust has also reached the maximum (also called the standard dust holding capacity P0). Therefore, it can also be considered that the life time T0 of the high-temperature dustproof bag high-efficiency filter is the time when the dust-holding capacity of the high-efficiency air filter reaches the standard dust holding capacity P0. When the filter is operated at low air flow Q1, Q1 <Q0 at this time, so the life of the filter can be extended to T1, where T1>T0.
The relation between the resistance value and the dust amount of the filter bag with high temperature and dust removal bag can be approximated as a straight line relationship. If the value under the standard dust holding capacity or the resistance increase value does not exceed 1 time the initial resistance value, the resulting error is not significant; The speed of filtration exceeds conventional, or the dust holding capacity has exceeded the standard dust holding capacity, and the resistance will increase more rapidly with the increase of dust amount. ‘And the dust accumulation P of the high-efficiency air filter bag is proportional to the ventilation volume Q1 of the filter bag. We can draw the following conclusion: If the design resistance of the filter in the air-conditioning system is not similar, ie the deviation is relatively large, then the resistance Larger will cause its filter air volume to be larger than the rated air volume of this type of filter, so the amount of dust will also be accelerated accordingly, leading to an increase in the value of its resistance, so that the life of the filter will also be reduced, and the filter will have a small resistance. Relatively small, the life is relatively long, resulting in a different life expectancy in an air conditioning system, causing troubles for the replacement of the filter in the future, and with the increase in the amount of dust will create a new system imbalance. Similarly, a high-efficiency air filter that is the main resistance of the air-conditioning system (high-efficiency filter has an initial resistance of at least 100 Pa, which is equivalent to a resistance of 100 m or more of the length of a normal air-conditioning duct containing a partial resistance), the resistance is selected to be similar, and the operation adjustment is also performed. It is also important to meet the air volume balance. Therefore, as required in the design specifications, it is necessary to design ‘efficient air filter bags installed in the same clean area with close resistance and efficiency.’