大空间建筑喷口侧送风分层空调负荷特性研究
Load characteristics of stratified air conditioning systems with nozzle air supply in large space buildings
摘要：
采用CFD模拟和缩尺模型实验，对大空间建筑喷口侧送风分层空调的竖直空气温度分布和负荷特性进行了研究。分析了建筑顶部排风比对空调负荷的影响，增大排风比可降低非空调区向空调区的对流转移负荷，而对辐射转移负荷影响较小。利用模拟结果绘制了不同排风比下的分层空调对流转移负荷线算图，并与设计手册中的对流转移负荷线算图进行了对比，给出了符合设计需要的线算图。
Abstract：
This study uses CFD simulation and scale model experiment to study the vertical air temperature distribution and load characteristics of the stratified air conditioning system with the nozzle air supply in large space buildings. The influence of the exhaust airflow ratio at the top of the building on the air conditioning load is analysed. Increasing the exhaust airflow ratio can reduce the convective transfer load from the non-air-conditioned area to the air-conditioned area, but has less effect on the radiation transfer load.Based on the simulation results, the convective transfer load nomographs of stratified air conditioning under different exhaust airflow ratios are drawn, and compared with that in the design manual. The nomograph that meets the design requirements is given.
Keywords:large space building; stratified air conditioning; nozzle air supply; air conditioning load; exhaust airflow ratio; convective transfer load; nomograph; scale model experiment