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Temporarily occupied space with metabolic-rate-initiated thermal overshoots: A case study in railway stations in transition seasons
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics. (Building Energy Efficiency)
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics. (building energy efficiency)
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2017 (English)In: Building and Environment, ISSN 0360-1323, E-ISSN 1873-684X, Vol. 122, 184-193 p.Article in journal, Editorial material (Refereed) Published
Abstract [en]

Temporarily occupied space (TOS) is defined as an air-conditioned space in which most of occupants stay for less than a certain period (e.g., 40 min), such as post offices, supermarkets, bookstores, and banks. The definition mainly emphasizes two aspects: obvious temperature step up/down and short-term exposure periods. Typical TOSs with predominantly temperature-initiated thermal overshoots have been explored in previous studies. Indeed, apart from temperature-initiated thermal overshoots, thermal overshoots can also be initiated by other parameters, such as metabolic rates. In this view, the definition of thermal overshoots was generalized and a case study was conducted at high-speed railway station in China under conditions of transition seasons. The phenomenon of metabolic-rate-initiated thermal overshoots instead of temperature-initiated thermal overshoots was observed and explored, based on objective measurements and subjective questionnaire surveys. The results could optimize the design and operation of air conditioning and mechanical ventilation (ACMV) systems in such TOSs as embodied by railway stations. In addition, the probit analysis method for analyzing neutral temperature ranges instead of neutral temperature points was also discussed.

Place, publisher, year, edition, pages
2017. Vol. 122, 184-193 p.
Keyword [en]
Thermal comfort, Temporarily occupied space, Transition seasons, Metabolic-rate-initiated overshoot
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:umu:diva-135869DOI: 10.1016/j.buildenv.2017.06.018ISI: 000407184400017OAI: oai:DiVA.org:umu-135869DiVA: diva2:1106777
Available from: 2017-06-08 Created: 2017-06-08 Last updated: 2017-09-29Bibliographically approved

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Yang, BinOlofsson, Thomas
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf