In order to reduce the restroom envelope energy consumption, one optimization method on basis of analyzing the influence of heat transfer coefficient on the performance of a prefabricated restroom envelope in a hot summer and cold winter zone was proposed. An energy-consuming model of prefabricated restroom in Nanjing is initially built based on Designer's Simulation Toolkit software. Subsequently, the effect of external walls, rooftops, external windows with various thermal characteristics on the building envelope is analyzed respectively. Simultaneously, a method that only changes the heat transfer coefficient of the prefabricated restroom envelope while keeping other parameters unchanged is adopted. Results show that, for a prefabricated restroom, the optimal range of heat transfer coefficient of the external wall, rooftop, and external window in hot summer and cold winter zone is 0.199∼0.22, 0.16∼0.19, and 3.0∼3.1 W/(m²·K), respectively. When the window-to-wall ratio is less than 0.2, the priority of the wall heat transfer coefficient on building energy consumption is higher than that of the rooftop heat transfer coefficient, simultaneously, the rooftop heat transfer coefficient has priority higher than window heat transfer coefficient. Thus, it is of great significance to optimize the design of the prefabricated restroom envelope in a hot summer and cold winter zone, which provides relative reference for thermal performance improvement of prefabricated restrooms.

为了减少厕所围护结构的能耗，提出了一种在炎热的夏季和冬季寒冷的地区，在分析传热系数对预制厕所围护结构性能影响的基础上的优化方法。最初基于Designer的Simulation Toolkit软件建立了南京预制厕所的能耗模型。随后，分别分析了具有各种热特性的外墙，屋顶，外窗对建筑物围护结构的影响。同时，采用了仅改变预制厕所围护结构的传热系数而其他参数不变的方法。结果表明，对于预制厕所，外墙，屋顶，² ·K）。当窗墙比小于0.2时，墙体传热系数对建筑能耗的优先权高于屋顶传热系数，同时，屋顶传热系数的优先权高于窗户传热。系数。因此，在炎热的夏季和寒冷的冬季，优化预制厕所围护结构的设计具有重要意义，这为改进预制厕所的热性能提供了相对参考。