The Research Of Three Ventilation Styles And Air-quality In Room

This paper chooses the representative style of air ventilation system in the air-conditioner room in summer and simulates the velocity fields, temperature fields and concentration fields. The simulations are founded on the RNGκ-ε two-equation turbulence model as well as the wall function, taking the air-conditioner room with length*width*high = 4m*3m*2.6m as the simulation object in which there are barrier, polluter and hot fountain. This paper does not only analyze and compare the traits of the relative fields of the three styles, central up-in and up-out, up-in and up-out, down-in and up-out, but compare their potential for economizing on energy when changing the in-let velocity in the constant air output.This paper incites the concept of ventilation efficiency, and compares the three dimensional velocity fields, temperature fields and concentration fields to conclude the respective character and at last to pop out the advantage of the displacement ventilation on supplying better air-quality, ventilation efficiency and saving energy.