Optimization research of air distribution with stratified air-conditioning in a large space building

摘要

With the rapid development of modern industry, the number of tall buildings is increasing day by day. To realize the large space building with good indoor air quality and thermal environment and energy conservation, the key is to choose reasonable air organization. In this paper, taking a large space building as an object of study, numerical simulation method is used for optimization research on air distribution with stratified air conditioning. In view of the existing stratified air conditioning with the supply air of the orifice plate, four different supply air modes are chosen through changing the height and air volume of the orifice plate. By comparing and analyzing the influence of pollutants concentration of toluene in the plant, toluene concentration of four schemes are much lower than the maximum permissible concentration in main work zone with horizontal unidirectional air flow mode, and the scheme 2 is the best form of air distribution when the orifice plate height is 2.0 m. So, the horizontal unidirectional air flow mode with stratified air conditioning is optimized in this large space building, indoor contamination concentration is lower, indoor air quality and thermal environment are much better.