Evaluation of the Thermal Environment of Xi’an Subway Stations in Summer and Determination of the Indoor Air Design Temperature for Air-Conditioning

Xuemin Sui (), Siyi Chen, Bing Han and Senfeng Yu
Additional contact information
Xuemin Sui: School of Civil Engineering, Chang’an University, Xi’an 710061, China
Siyi Chen: School of Civil Engineering, Chang’an University, Xi’an 710061, China
Bing Han: School of Civil Engineering, Chang’an University, Xi’an 710061, China
Senfeng Yu: School of Civil Engineering, Chang’an University, Xi’an 710061, China

Sustainability, 2023, vol. 15, issue 7, 1-21

Abstract: Taking two typical subway stations in Xi’an as the research objects, the thermal environment and human thermal comfort of the station in summer were studied based on field measurements and a questionnaire survey. Based on the relative warmth index (RWI), the passengers’ thermal comfort during the process from entering to leaving the station under the operating temperature and the designed temperature was also analyzed. Moreover, the RWI method was modified based on the comparative analysis of the predicted results from the RWI and questionnaire methods. Then based on the revised RWI method, the suitable indoor air design temperature in Xi’an subway stations was discussed. The research results revealed that if the air-conditioning system was operated at the design temperature suggested by Code GB 50157-2013, it cannot meet the thermal comfort needs of most passengers. Only when the temperature of the platform was at least 1 °C lower than that in the station hall did the passengers obtain temporary relative thermal comfort. According to the control proportion that 25% of passengers need a cooler environment, the indoor air design temperature for air-conditioning in Xi’an subway stations should be 25.5 °C in the station hall and 24.5 °C on the platform.

Keywords: subway station; indoor air design temperature; thermal comfort; field test; questionnaire survey; relative warmth index (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/7/6111/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/7/6111/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:7:p:6111-:d:1113635

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().