JiSMART2021—028: Thermal Performance Analysis of Double-Layer Trombe Wall in Severe Cold Regions of China

Abstract

This paper proposes a light-heat building integrated double mezzanine Trombe wall that can meet the requirements of thermal insulation in hot summer and cold winter areas. Solar collectors, heat radiation reflective layers and indoor radiant panels are designed in the wall part. Simulation and experimental research on the thermal insulation performance of the wall under different working conditions are carried out. The simulation and experimental results show that under the action of solar radiation, the temperature of the collector plate under noload conditions is higher, which has a greater impact on the heat transfer of the wall. In the simulation and experimental tests of no-load conditions in winter, the maximum temperature of the collector plate reached 89.1℃ and 92.0℃, respectively. The temperature of the collector plate is higher than the indoor and outdoor ambient temperature, and it can play a better role in keeping indoors in winter. The surface of each material layer of the wall produces a vertical temperature difference, and the vertical temperature difference of the surface increases with the increase of solar radiation illuminance and decreases with the increase of the thickness of the air inter layer.