Experimental and numerical investigation of heat transfer in a channel with multiple phase change materials (PCMs)

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dc.authorscopusid54782136400
dc.authorscopusid12139419100
dc.authorscopusid57194230895
dc.authorscopusid6602300270
dc.authorscopusid6506635786
dc.contributor.authorAkyol, Erhan
dc.contributor.authorHacıhafızoğlu, Oktay
dc.contributor.authorSusantez, Çiğdem
dc.contributor.authorKahveci, Kamil
dc.contributor.authorAkyol, Uğur
dc.date.accessioned2022-05-11T14:26:52Z
dc.date.available2022-05-11T14:26:52Z
dc.date.issued2022
dc.departmentFakülteler, Çorlu Mühendislik Fakültesi, Makine Mühendisliği Bölümü
dc.description.abstractIn this study, the thermal performance of an air-phase change material (PCM) unit used in free cooling applications was examined experimentally and numerically by Comsol finite element simulation software. Effects of the air inlet temperature, velocity and also PCM configuration on the efficiency of the air-PCM unit were investigated. Experiments were performed on PCM unit, which is a channel including PCM plates inside and exposed to medium air entrance from one side. The air in contact with the plates inside this unit is cooled and contributes the room temperature to decrease. The experimental work was carried out at two different ambient temperatures in a well-insulated room. Three different configurations of paraffin-based pure RT22HC and RT25HC were studied. Effects of air inlet temperature and velocity on the heat transfer, channel outlet temperature, performance of the air-PCM heat exchanger, cooling power of the system and also total amount of heat absorbed by the PCM were investigated. The initial temperature of the PCMs is 16 ?C and experiments were carried out for two different average inlet temperature values (27 and 29 ?C) and two different average velocities (1.3 and 1.8 m/s) of the air at the channel entrance. According to the results, it was concluded that the air inlet temperature and air inlet velocity have a substantial effect on the thermal performance of the air-PCM unit. It was observed that the melting time decreased and the channel outlet temperature increased with the increase of air inlet temperature and velocity. 2 ?C increase of in the inlet temperature increased the total amount of heat absorbed by PCMs by 31%, while an increase of the inlet velocity by 0.5 m/s increased it by 16%. The results revealed that the increase of the inlet velocity and with the inlet temperature increased the thermal energy absorbed by 44%. In addition, it was observed that the average efficiency increased by 37% with 2 ?C increase of inlet temperature and 0.5 m/s decrease in the inlet velocity. © 2021 Elsevier Ltd
dc.description.sponsorshipThis study was supported by Trakya University Scientific Research Projects Unit (TÜBAP). (Project year and number: 2018/210).
dc.identifier.doi10.1016/j.est.2021.103710
dc.identifier.issn2352-152X
dc.identifier.scopus2-s2.0-85121005544
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.est.2021.103710
dc.identifier.urihttps://hdl.handle.net/20.500.11776/6628
dc.identifier.volume45
dc.indekslendigikaynakScopus
dc.institutionauthorAkyol, Uğur
dc.language.isoen
dc.publisherElsevier Ltd
dc.relation.ispartofJournal of Energy Storage
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAir-PCM unit
dc.subjectFree cooling
dc.subjectMelting process
dc.subjectMultiple PCMs
dc.subjectThermal energy storage
dc.subjectAir intakes
dc.subjectApplication programs
dc.subjectCooling
dc.subjectHeat exchangers
dc.subjectHeat storage
dc.subjectInlet flow
dc.subjectMelting
dc.subjectPhase change materials
dc.subjectThermal energy
dc.subjectVelocity
dc.subjectAir inlet temperature
dc.subjectAir-phase change material unit
dc.subjectExperimental investigations
dc.subjectFree cooling
dc.subjectInlet temperature
dc.subjectInlet velocity
dc.subjectMelting process
dc.subjectMultiple phase change material
dc.subjectOutlet temperature
dc.subjectThermal Performance
dc.subjectAir
dc.titleExperimental and numerical investigation of heat transfer in a channel with multiple phase change materials (PCMs)
dc.typeArticle

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