It is challenging to accurately establish the dynamic heat transfer model of the internal thermal mass owing to the irregular shape. In building energy simulation software, the internal thermal mass is described as slabs. However, the parameter setting of the equivalent slabs depends primarily on the user experience, which may lead to uncontrollable errors. Therefore, this paper proposes a method, termed the effective area method (EAM), which specifies the transformation of an irregular internal thermal mass to the slab and can be used as a pre-processing method for building simulation software. This paper describes the methodology and pre-processing logic of the EAM, and the implementation of the approach in EnergyPlus considering an office environment. The root-mean-square errors between the simulation and measured temperatures are less than 0.3°C, which indicates that the EAM can effectively eliminate the errors caused by the unreasonable settings of the internal thermal mass.

由于形状不规则，因此准确地建立内部热质量的动态传热模型具有挑战性。在建筑能耗模拟软件中，内部热质被描述为平板。但是，等效平板的参数设置主要取决于用户体验，这可能会导致无法控制的错误。因此，本文提出了一种称为有效面积法（EAM）的方法，该方法指定了不规则内部热质向平板的转换，可以用作建筑仿真软件的预处理方法。本文介绍了EAM的方法和预处理逻辑，以及在考虑办公环境的EnergyPlus中该方法的实现。模拟和测量温度之间的均方根误差小于0。