基于分区建模的大空间分层空调负荷随分层高度变化的研究

摘要

Based on a large space building with sloping roof,the physical models were constructed using the eQUEST for the lower conditioned space and the upper unconditioned space individually.The models were used to simulate the summer cooling loads of the entire air conditioning and stratified air conditioning with different heights.The simulation results show that the stratified air conditioning can reduce the cooling load by more than 30%, compared with the entire air conditioning.And the increase of stratification height results in a linear increase of the peak values of the cooling load in summer.The relative error between the simulation results and the general stratified air conditioning load calculation results is below 3%.This shows that it is feasible to construct the lower and upper physical models separately for modeling the stratified air conditioning load in the large space based on energy consumption simulation software.%以某坡屋顶大空间建筑为研究对象，利用 eQUEST 软件，提出了空调区和非空调区分区的建模方法，依据所建模型分析全室空调和不同分层高度时夏季分层空调峰值冷负荷特性。模拟结果表明，分层空调形式的负荷比全室空调的减少30％以上，夏季空调峰值负荷随分层高度增加近似线性增加。比较模拟负荷与常规分层空调负荷计算结果发现，两者相对误差小于3％，说明基于动态能耗模拟软件分区模拟大空间分层空调负荷的方法合理。