Abstract：
Based on the domestic and foreign research on the tunnel ventilation cooling project, this paper analyzes in influence according to heat transfer coefficient of the underground pipe wall by orthogonal experiment, to get varying pattern for the main influencing factors. Through the analysis of the coefficient of heat transfer in the inner underground pipe wall, the main factors affecting the heat transfer coefficient of the pipe wall are the wind speed, the equivalent diameter of the pipeline and the soil type. The range soil type could reach 9.40, showing degree of influence on the buried tube wall heat transfer coefficient is the largest, and pipe diameter and wind speed are in the secondly place. In actual engineering design, soil types, namely the heat transfer coefficient, should be firstly considered to match the adaptability for system, and pipe diameter and wind speed are secondly.
ZHANG Zhi-jian,WANG Liang. Study on influencing factors of heat transfer performance of underground pipe in tunnel ventilation system[J]. Architecture Technology, 2019, 50(1): 20-.
