SEPERATION OF PARTICLES FROM AIR BY USING A SETTLING CHAMBER

     An equation for determining the distance that a suspended dust particle in the gas (taken as air) needs to settle has been obtained as a function of height of the chamber, velocity of the air, and diameter of the dust particle.This traveling distance by a particle with certain diameter also represents the maximum length of the chamber which the same particle will settle in, particles with larger diameters will settle out of the chamber, whereas particles with smaller diameters will settle in the chamber.The chamber, here, was assumed to be an infinite length chamber without walls to limit it; the control would be made on the height of the entrance of particles and the velocity of the gas which the two would be assumed.In general, the factors that make the length of the chamber effects are height of the chamber, velocity of the gas, and settling velocity, thus studying the effects of these factors is important for obtaining the length's equation. The studying is simplified by either taking different assumed values of height of the chamber with constant assumed value of velocity of the gas, or taking different assumed values of velocity of the gas with constant assumed value of height of the chamber, whereas different values of settling velocity have been obtained by substituting assumed diameters in certain equations that determine the settling velocity, as a result different values of length of the chamber have been obtained in the two cases, and that done by software program.These different values of length have been represented using software program by two equations each according to its case. The average errors of the constant gas velocity equation and constant height of the chamber equation are 5 % and 4.9 % respectively.