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Numerical and exper...
Numerical and experimental investigation of the influence of infrared reflective interior surfaces on building temperature distributions
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- Joudi, Ali (författare)
- Linköpings universitet,Högskolan Dalarna,Energiteknik,Energy Technology, Dalarna University, Falun, Sweden; SSAB Europe, Borlänge, Sweden,Energisystem,Tekniska fakulteten
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- Cehlin, Mathias (författare)
- Högskolan i Gävle,Energisystem,Building, Energy & Environmental Engineering, University of Gävle, Gävle, Sweden
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- Svedung, Harald, 1970- (författare)
- Högskolan Dalarna,Energiteknik,Energy Technology, Dalarna University, Falun, Sweden; SSAB Europe, Borlänge, Sweden
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- Rönnelid, Mats (författare)
- Högskolan Dalarna,Energiteknik,Energy Technology, Dalarna University, Falun, Sweden
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- Moshfegh, Bahram (författare)
- Linköpings universitet,Högskolan i Gävle,Energisystem,Energy Systems, Linköping University, Linköping, Sweden,Tekniska fakulteten,Building, Energy & Environmental Engineering, University of Gävle, Gävle, Sweden
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(creator_code:org_t)
- Sage Publications, 2017
- 2017
- Engelska.
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Ingår i: Indoor + Built Environment. - : Sage Publications. - 1420-326X .- 1423-0070. ; 26:3, s. 355-367
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Radiative properties of interior surfaces can affect not only the building heat flux but also the indoor environment, the latter of which has not been thoroughly investigated. The aim of this study is to analyse the effect of surface emissivity on indoor air and surface temperature distributions in a test cabin with reflective interior surfaces. This was done by comparing experimental and simulation data of the test cabin with that of a normal cabin. This study employs transient computational fluid dynamics (CFD) using re-normalisation group (RNG) k-epsilon model, surface-to-surface radiation model and an enhanced wall function. Boundary conditions were assigned to exterior surfaces under variable outdoor conditions. The numerical and the measurement results indicate that using interior reflective surfaces will affect the indoor air temperature distribution by increasing the vertical temperature gradient depending on the time of the day. CFD simulations with high spatial resolution results show increased interior surface temperature gradients consistent with the increased vertical air temperature gradient. The influence of reflective surfaces is potentially greater with higher indoor surface temperature asymmetry. The vertical indoor air temperature gradient and surface temperatures are important parameters for indoor thermal comfort.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Energisystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Energy Systems (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Husbyggnad (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Building Technologies (hsv//eng)
Nyckelord
- Reflective interior surfaces
- Indoor air temperature gradient
- Transient computational fluid dynamics
- Surface-to-surface radiation
- Building thermal performance
- Hållbar stadsutveckling
- Sustainable Urban Development
- Energy and Built Environments
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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