Experimental and numerical investigation on the thermal performance of linear LED housings under forced convection

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dc.contributor.authorAbuşka M.
dc.contributor.authorŞevik S.
dc.contributor.authorÖzdilli Ö.
dc.date.accessioned2024-07-22T08:05:26Z
dc.date.available2024-07-22T08:05:26Z
dc.date.issued2021
dc.description.abstractThis study aims to experimentally and numerically test the thermal performances of three different linear housings (Model 1-without fin, Model 2-with inner fin, and Model 3-with inner and outer fin) with medium power light-emitting diode (LED) arrays at 30 °C and 40 °C ambient temperatures under forced convection for 25 W and 35 W. Although the mass of Model-3 was reduced by 54.2% and 34.67% compared to Model-1 and Model-2, its surface area was increased by 46.3% and 9.11%, resulting in an improvement in junction temperature (Tj) up to 4.4 °C and 7.75 °C, respectively. Thermal resistance (Rth) for Model-3 is approximately 1.38–3.1% and 7.85–9.72% smaller than that of Model-1 for 25 W at ambient air temperature (Taa = 30 °C and Taa = 40 °C), respectively. The Rth for Model-3 is approximately 1.39–2.6% and 8.65–6.07% smaller than that of Model-1 for 35 W at the same Taa, respectively. The Model-3 offers lower junction temperature, lower cost, and safe operating temperature range by inner and outer fins compared to the others. The results demonstrated that all of the temperatures reduced with the increase in air mass flow rate; however, it was found that as the LED power and ambient temperature increased, the junction temperature increased. Experiment and simulation results show that adding a fan to the luminaire significantly lowers the LED junction temperature, in which case it provides a safe operating range and protects the luminaire against thermal shocks. The forced application allows using of comparatively smaller housing as it provides a lower junction temperature. © 2021 Elsevier Ltd
dc.identifier.DOI-ID10.1016/j.icheatmasstransfer.2021.105616
dc.identifier.issn07351933
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/13138
dc.language.isoEnglish
dc.publisherElsevier Ltd
dc.subjectFins (heat exchange)
dc.subjectForced convection
dc.subjectHousing
dc.subjectTemperature
dc.subjectExperimental investigations
dc.subjectHousing models
dc.subjectJunction temperatures
dc.subjectLightemitting diode
dc.subjectLightemitting diode(LED) array
dc.subjectLinear housing
dc.subjectMedium power
dc.subjectNumerical investigations
dc.subjectSurface area
dc.subjectThermal Performance
dc.subjectLight emitting diodes
dc.titleExperimental and numerical investigation on the thermal performance of linear LED housings under forced convection
dc.typeArticle

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