An experimental study on the performance of Trombe wall system in summer climate conditions in Hot Summer and Cold Winter zone of China

Abstract

Trombe wall system is a typical passive building technology that can use stack effect to induce indoor ventilation, adjust indoor thermal environment and reduce building energy consumption. Present researches mainly aimed at its application in winter heating, and seldom involve summer ventilation and cooling. In this research, two comparative test rooms were established, one with the Trombe wall system installed in the south facade, and the other used as a contrast. By comparing the response characteristics of the two rooms to the outdoor climate, the performance of the Trombe wall system was studied in summer climate conditions in hot summer and warm winter zone of China. During the experiment, the indoor and outdoor environmental parameters and the performance parameters of the Trombe wall system were tested. The result illustrated that the Trombe wall system can make full use of the absorbed solar radiation heat to induce indoor ventilation, with a maximum circulating air flow rate of 140m3/h (32.7h-1). And it can effectively reduce the indoor temperature by up to 4.1 °C during the daytime by compared with the reference room. The heat entering the room through the Trombe wall system was more than that of that through the south façade of the reference room. However, the excess heat can be ventilated to the outdoor through the air vents of the Trombe wall system by the effect of high indoor ventilation times. This prevents the air temperature in the room from rising.