Measurement Of Thermal Environment In Subway Stations Under Different Shielded Doors

In recent years,with the rapid development of China's urban rail transit and the continuous improvement of the corresponding infrastructure,subway traffic is an important tool for people's urban work and entertainment,and is closely related to people's lives.The car is the longest environmental area for people to stay in,so the comfort brought by the thermal environment inside the subway car is getting more and more attention and attention.In the long-term actual operation of the subway,the subways of different lines will cause passengers' discomfort in different seasons.Two types of safety door systems commonly used in subways in China are screen door systems and unshielded door systems.The use of different screen door systems for different metro stations has different effects on the station environment.In terms of station construction,the design of the station that references the screen door system and the unshielded door system has different thermal sensation effects on the passengers in the space structure and the environmental control system of the overall station.Therefore,the station will form different thermal environments in the station interior and the cabin in different seasons,which will make the passengers have different experience environments and cause different comforts.This paper considers the subway station and the carriage as the long-term detention interval of people's travel.For the Shanghai metro station in the transitional season,select the subway line 2 and line 9 under different screen doors,and use the actual survey to investigate the subway station and the cabin thermal environment.Conduct research and research.The specific research contents are as follows:(1)Through continuous detection of temperature,air velocity,relative humidity,and C02 concentration in subway stations with shielded doors and non-shielded doors,dynamic changes of actual parameters that affect the thermal environment of the carriage are obtained.Objective analysis of the conditions under which different shielded doors are installed Of the thermal environment of subway stations.At the same time,the thermal environment changes of subway cars under different shielded door conditions are compared and analyzed.(2)Through questionnaire surveys of passengers in different areas of rail transit subway stations,to understand the subjective feelings of passengers about the thermal environment of the current station,analyze the passengers' feelings and expectations for the temperature of the cabin,the size of the blower,and the air dryness.Further find out the analysis of environmental changes in subway stations that passengers are concerned about.The thermal comfort of the subway station thermal environment for passengers under different shielded door conditions is analyzed.(3)Based on the research of a subway train of Shanghai Metro Line 2 and Line 9,the continuity detection of the temperature,air velocity,relative humidity,and C02 concentration of the moving train compartments,and the train compartments under different shielding door conditions The thermal environment is compared and analyzed.(4)Through the analysis and analysis of the results of the thermal environment inside the subway station and the carriage under different shielded door conditions.Select the typical area location to analyze the passenger's thermal sensation distribution statistics for the typical metro area,and calculate the average passenger thermal sensation vote.At the same time,it analyzes the thermal comfort of passengers in the thermal environment of each subway area,and analyzes the thermal neutral temperature of passengers in typical areas of subways with shielded and unshielded doors.