空调车室的冷负荷与室温变动计算方法探讨

Discussion on method of calculation of cooling load and inside temperature change of air-conditioned automobile compartment

本文将房间空调热过程的分析方法引入汽车空调车室热过程的分析,从空调车室的非稳态传热过程出发,建立了空调车室的除热量、冷负荷与室温变动的数学模型;并探讨了模型的数值解法。采用现代控制理论中对扰量和响应的离散化处理方法,求出了冷负荷对环境温度变化和得热量变化的反应系数和传递函数;得出了车室内温度变动的数学表达式。对样车的空调冷负荷和室温变化进行了计算,计算值与实验值吻合较好。

By using building thermal analysis method, a mathematical model of cooling load and inside temperature change of air - conditioned automobile compartment is established. The expression of Z - transfer function and transfer coefficients of cooling load and inside temperature are derived.