Regional Construction and Differences of Thermal Environment in Vernacular Buildings

Unlike the traditional extensive heating management, the on-demand precise time- and region-specific heating strategy can effectively reduce the heating energy consumption of vernacular buildings. The existing studies on the time- and region-specific heating strategy of vernacular buildings face several problems: the time and space are not clearly divided, the heating model cannot simultaneously satisfy the different heating demands of residents in different periods, and the proper time- and region-specific heating terminals are severely lacking. To solve these problems, this paper explores the regional construction and differences of thermal environment in vernacular buildings. Firstly, we classified the regional construction of thermal environment in vernacular buildings, analyzed the thermal process for the regional construction, and determined the implementation model for heating actual vernacular buildings. The layout of rooms inside a multi-space vernacular building determines the difference in heat gain and loss between the rooms to be heated, when the heating system operates naturally. With this in mind, we analyzed the regional thermal balance of thermal environment in vernacular buildings, linearly fitted the average indoor thermal sensation in each region of a vernacular building in day and night, and obtained the relevant experimental results. In addition, the regional indoor temperature changes were summarized at different glazing ratios and different roof heat transfer resistances. The results show the effectiveness of the regional construction strategy of thermal environment based on time and regional differences.