Method for evaluating comfort level of subway carriage in thermal environment in summer

Abstract

The invention provides a method for evaluating the comfort level of a subway carriage in a thermal environment in summer. On the basis of the field research on main urban subway lines, a membership function between an influence factor and a thermal feeling of the thermal environment of a subway carriage is established by utilizing a fuzzy statistical method. According to the method, the expert evaluation and the analytic hierarchy are combined, and then a weight value of the influence factor of the thermal environment of the subway carriage is determined. Based on the fuzzy comprehensive evaluation method, the method for evaluating evaluating the comfort level of the subway carriage in the thermal environment in summer is established, wherein the temperature, the relative humidity, the wind speed, the thermal resistance of clothes and the riding state are substituted into an evaluation model. After that, the thermal feeling of the riding personnel can be calculated. Based on the evaluation method, the comfort level of the thermal feeling of a human body in a subway carriage in different thermal environments can be calculated relatively accurately. Therefore, the method provides a reference for making an operation control strategy for air conditioners in the subway.

Description

technical field [0001] The invention relates to a thermal environment evaluation method, in particular to an evaluation method for the thermal environment comfort degree of a subway car. Background technique [0002] The subway has the characteristics of fast, punctual, and large commuting volume, which effectively alleviates the congestion problem in the city, and at the same time advocates the concept of low-carbon and environmentally friendly life. With the vigorous development of subway construction, the thermal environment of subway cars has also been widely concerned. Subway cars carry a large number of passengers, so the thermal comfort and health of the car environment are particularly important. A good car should provide a thermal environment that satisfies most passengers and meet the comfort and health needs of passengers. [0003] The environment of the subway car is very different from the indoor environment of the building. First of all, the time for passenger...

AI Technical Summary

Problems solved by technology

Thirdly, passengers in subway cars cannot adapt to the hot and cold environment by adding or removing clothes like in buildings, and passengers do not have the opportunity to independently control the air conditioner, so they can only passively accept the hot environment. A healthy metro environment is critical

However, the current comprehensive evaluation of the indoor thermal environment is mainly concentrated in the building environment, and there is a lack of evaluation models that can accurately evaluate the thermal environment of subway cars.

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