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Thermal Comfort Analysis for Overhead and Underfloor Air Distribution Systems

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dc.citedby2
dc.contributor.authorIsmail F.B.en_US
dc.contributor.authorAl-Muhsen N.F.O.en_US
dc.contributor.authorJohari A.A.en_US
dc.contributor.authorid58027086700en_US
dc.contributor.authorid57197748656en_US
dc.contributor.authorid57413179700en_US
dc.date.accessioned2023-05-29T09:05:18Z
dc.date.available2023-05-29T09:05:18Z
dc.date.issued2021
dc.description.abstractUnderfloor and overhead air distributions are two types of Heating Ventilating and Air Conditioning (HVAC) system in which both differs in term of channelling the supplied air into a space. Underfloor air distribution (UFAD) system channels the supplied air from the underfloor plenum and goes to the return vent at the ceiling. On the other hand, the overhead air distribution (OHAD) system utilizes the ceiling-to-ceiling air pathway approach. In this study, A developed HVAC model was proposed. Ansys Fluent program was used to numerically investigate the best thermal comfort of the proposed model in terms of occupant satisfaction by referring to ASHRAE Standard. Two scenarios were designed and adopted in the computational investigation which is OHAD and UFAD. Three heat-generating parameters were involved which are a room lamp, personal computer and occupant. The attained computational fluid dynamic (CFD) simulation results were validated. Generally, the attained CFD results showed that the UFAD system could perform better compare to the OHAD system even though the OHAD system could have some benefits. Specifically, the UFAD system provided the best thermal performance whereas the OHAD system was found to be less efficient in providing thermal comfort to the occupant and consumed a greater amount of energy because it was required to cool down the whole room instead of being cooled partly. The CFD results confirmed that the UFAD system was capable of maintaining the room temperature at 26�C at a height below 2.0 m compared to 1.2 m of the OHAD system. In conclusion, the UFAD system could provide better indoor air quality, and it could have superior performance for the tropic weather regions such as Malaysia compared to that of the OHAD system. Besides, using the UFAD system could be represented a preventive action that could be proposed to solve the mould growth inside any occupied room. � 2021, Penerbit Akademia Baru. All rights reserved.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.37934/cfdl.13.12.113132
dc.identifier.epage132
dc.identifier.issue12
dc.identifier.scopus2-s2.0-85122867841
dc.identifier.spage113
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85122867841&doi=10.37934%2fcfdl.13.12.113132&partnerID=40&md5=dd6c1457bbb1fa7723c92cb2d5f27ef4
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/25854
dc.identifier.volume13
dc.publisherPenerbit Akademia Baruen_US
dc.relation.ispartofAll Open Access, Hybrid Gold
dc.sourceScopus
dc.sourcetitleCFD Letters
dc.titleThermal Comfort Analysis for Overhead and Underfloor Air Distribution Systemsen_US
dc.typeArticleen_US
dspace.entity.typePublication
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