本文用有限差分-反应系数法建立了一种“集热墙—窗—水墙”组合式被动太阳房的数学模型。在计算机模拟的基础上,研究了集热墙单体热工性能,并提出了组合式被动房的围护结构保温层厚度及集热墙主要结构参数最佳化的方法。本文还以北京地区气象条件为例,对一种组合式被动房作了优化设计,其技术经济性能指标都达到了较高的水平。 In this paper, a finite difference-response coefficient method is used to establish a mathematical model of a combined heat-collecting wall-window-water wall passive solar house. On the basis of computer simulation, the thermal performance of the single collector wall was studied. The method of optimizing the insulation thickness of the retaining structure and the main structural parameters of the collector wall was proposed. This paper also takes the meteorological conditions in Beijing as an example to optimize the design of a modular passive house, and its technical and economic performance indicators have reached a higher level.