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Study on the Influencing Factors of Passenger Thermal Comfort and Human Body Temperature in the Thermal Environment of Subway Cars(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2023年03期
Page:
1-8
Research Field:
动力工程及工程热物理
Publishing date:

Info

Title:
Study on the Influencing Factors of Passenger Thermal Comfort and Human Body Temperature in the Thermal Environment of Subway Cars
Author(s):
Luo Zibing1; Chen Weiwei1; Li XinJun1; Shi Jinzhi2; Lu Shihua1
(1.School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing 210023, China)
(2.Jiangsu Provincial Architectural Design and Research Institute Co., Ltd, Nanjing 210019, China)
Keywords:
subway car;  thermal environment;  two-node model;  thermal comfort;  core temperature;  skin temperature
PACS:
TU83
DOI:
10.3969/j.issn.1672-1292.2023.03.001
Abstract:
The thermal environment parameters of subway cars and subjective thermal sensation of passengers are investigated by field measurement and questionnaire. The influence of thermal environment parameters on the thermal comfort of subway passengers is analyzed. A two-node model is introduced to model the core temperature and skin temperature of the passengers in the subway air-conditioned car. The finite difference method is used to discretize the coupled nonlinear ordinary differential equations in the time unit, and the MATLAB software is used to program the solution iteratively. The 1 070 sets of experimental data measured and the calculated results are compared. The results show that the prediction accuracy of the two-node model is high, so it can be used to analyze the influencing factors of human body temperature in the subway car environment. The thermal environment parameters of the subway air-conditioned car and the human body characteristics jointly determine the variation of human body temperature. The influencing ability of each factor from large to small is the ambient temperature, mean radiation temperature, human metabolic rate, dress heat resistance, relative humidity, and wind speed. The calculation methods and main conclusions of this paper can provide a theoretical reference for the research on the thermal comfort of passengers in air-conditioned subway cars.

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Last Update: 2023-09-15