建筑围护结构冷负荷计算的理论模拟与试验

Simulation and Test on Cooling Load Calculation of Building's Enclosed Construction

建筑围护结构冷负荷计算的准确性在空调系统设计中是非常关键的,当前工程人员普遍采用的经验估算法和概算法往往取值过大,从而导致系统投入运行后的效率不高,增加了额外的电能消耗,因此采取合适的理论计算方法实现空调系统节能具有实际意义.本文利用改进Z传递函数法建立了夏季空调建筑围护结构冷负荷计算的数学模型,并以单层玻璃窗为例安排试验进行验证,根据测试结果分析与理论值比较,认为该理论方法用于围护结构冷负荷计算是正确的.

At present,estimating method is generally used in cooling load calculation of building's enclosed construction(CLCBEC),consequently the air-conditoning system runs in lower efficiency and uses up more power and energy,so calculating accurately is very important when designing a set of air-conditioning system for the building.In order to save energy in running the system,we should select a proper calculating method of CLCBEC.In this paper,by means of the Z transfer function,a mathematical model of the summer air-conditioning CLCBEC is put forward,and single glass window is taken as a sample to compare the results from the theoretical calculating method with the ones obtained in tests.The data shows that this theoretical method used for CLCBEC is fairly accurate and is proposed.