Thermal performance of a traditional Chinese heated wall with the in-series flow pass: Experiment and modeling

• A Chinese heated wall was set up and its thermal performance was tested.
• The heat transfer model of the heated wall was developed and validated.
• The dynamic performances of heated wall and indoor thermal environment are simulated.

Chinese heated wall is a traditional space heating device commonly used in the northeast rural China. It absorbs and stores the surplus heat of high temperature smoke from solid fuel combustion in the stove, and releases the heat to room gradually in the following hours. In this article, a full-scale heated wall was constructed for measuring its thermal performances. The experimental results show that the heated wall could recover approximately 70% of the surplus heat from the stove under the measurement conditions. A dynamic heat transfer model considering heat transfer between the hot smoke and the wall body and the room was also developed. The simulated temperatures agreed well with the experimental data. Therefore, the model could be applied to analyze the thermal performance and optimize the design of the heated wall in future.