A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Temporarily occupied space with metabolic-rate-initiated thermal overshoots—A case study in railway stations in transition seasons
https://orcid.org/0000-0002-1579-7978
AbstractTemporarily 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.
HighlightsGeneralized TOS was defined.Occupant thermal comfort in railway stations under transition seasons was studied.The phenomenon of metabolic─rate─initiated thermal overshoots was found.Optimized design and operation strategies for ACMV systems were proposed.
Temporarily occupied space with metabolic-rate-initiated thermal overshoots—A case study in railway stations in transition seasons
https://orcid.org/0000-0002-1579-7978
AbstractTemporarily 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.
HighlightsGeneralized TOS was defined.Occupant thermal comfort in railway stations under transition seasons was studied.The phenomenon of metabolic─rate─initiated thermal overshoots was found.Optimized design and operation strategies for ACMV systems were proposed.
Temporarily occupied space with metabolic-rate-initiated thermal overshoots—A case study in railway stations in transition seasons
https://orcid.org/0000-0002-1579-7978
AbstractTemporarily 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.
HighlightsGeneralized TOS was defined.Occupant thermal comfort in railway stations under transition seasons was studied.The phenomenon of metabolic─rate─initiated thermal overshoots was found.Optimized design and operation strategies for ACMV systems were proposed.
Temporarily occupied space with metabolic-rate-initiated thermal overshoots—A case study in railway stations in transition seasons
Yu, Zhun (Jerry) (author) / Li, Jun (author) / Yang, Bin (author) / Olofsson, Thomas (author) / Zhang, Guoqiang (author)
Building and Environment ; 122 ; 184-193
2017-06-07
10 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2017
| British Library Online Contents | 2017
Temporarily occupied space with metabolic-rate-initiated thermal overshoots
| Online Contents | 2017
Energy efficient thermal comfort in temporarily occupied space – A summer case study in Tianjin
| BASE | 2016
Utility of cooling overshoot for energy efficient thermal comfort in temporarily occupied space
| British Library Online Contents | 2016