抄録
The design of fabric filter systems has up to now not been based on engineering analysis but rather on empirical practice. A procedure for determining the optimal design of these systems is developed by formulating an economic evaluation function based on the cleaning cycle for both timer and pressure-switch type filter systems.
The annual cost is formulated in terms of the fixed and operating costs of a fan, the fixed cost of a filter and the fabric replacement cost. It is assumed that the fabric life is constant or is equal to the allowable repetitions of cleaning cycles, so that the economically optimal operating conditions can be calculated using the above-mentioned formula to minimize the annual cost.
The optimal number of compartments depends on the inlet dust concentration. For a system in which fabric life is limited by repetition of the cleaning cycles, the optimal operating conditions depend on dust concentration and the number of compartments. However, for a filter system with constant fabric life, the concentration may not affect the optimal conditions.
