Abstract
The two types of passive system, the tunnel ventilation and the solar chimney ventilation, are combined to adjust the indoor thermal environment and it can fully realize the optimized utilization of renewable energy resources. In this paper, through the establishment of tunnel and solar chimney ventilation composite system model, study on the correlativity of influencing factors of the tunnel length, the ratio of tunnel air inlet to solar chimney area, the height of the solar chimney and soil type etc. The results show that the maximum value of soil type is the highest, when reaching 2.90, indicating the greatest influence on indoor temperature. When optimizing the design of ventilation composite system, the adaptability of local soil to the system should be given priority. If the soil type cannot meet the demand of the heat exchange of the tunnel ventilation system, the method of selecting the appropriate diameter and increase the length of tunnel can be achieved. When the tunnel length is 3 times the length of the room and the soil is marble, the air temperature will decrease by 4 degrees after the cooling of the tunnel.
