Study On The Indoor Thermal Environment In A Large Space With Cold Air Distribution System

In this paper, the indoor thermal environment in a large space building is studied. Firstly, the characteristic of the cold air distribution system is analyzed. Secondly, the energy consumption of four all outdoor air conditioning systems which are conventional air conditioning system for all indoor space, conventional system with stratified air conditioning, cold air distribution system for all indoor space, cold air distribution system with stratified air conditioning and some thermal environment evaluation indexes are analyzed. Thirdly, by using the method of CFD, with the example of a large workshop for four air conditioning systems under different airflow modes mentioned above are simulated, the velocity and temperature fields are presented and evaluated. Finally, by comparing and analyzing the simulation results, the optimal airflow modes are obtained.