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Thermal Analysis of the Factors Influencing Junction Temperature of LED Panel Sources

Author

Listed:
  • Krzysztof Baran

    (Department of Power Electronics and Power Engineering, Rzeszow University of Technology, Wincentego Pola 2, 35-959 Rzeszow, Poland)

  • Antoni Różowicz

    (Department of Industrial Electrical Engineering and Automatic Control, Kielce University of Technology, 7 Tysiąclecia Państwa Polskiego Str., 25-314 Kielce, Poland)

  • Henryk Wachta

    (Department of Power Electronics and Power Engineering, Rzeszow University of Technology, Wincentego Pola 2, 35-959 Rzeszow, Poland)

  • Sebastian Różowicz

    (Department of Industrial Electrical Engineering and Automatic Control, Kielce University of Technology, 7 Tysiąclecia Państwa Polskiego Str., 25-314 Kielce, Poland)

  • Damian Mazur

    (Department of Electrical and Computer Engineering Fundamentals, Rzeszow University of Technology, Wincentego Pola 2, 35-959 Rzeszow, Poland)

Abstract

Limiting junction temperature T j and maintaining its low value is crucial for the lifetime and reliability of semi-conductive light sources. Obtaining the lowest possible temperature of T j is especially important in the case of LED panels, where in a short distance there are many light sources installed, between which there occurs mutual thermal coupling. The article presents results of simulation studies connected with the influence of construction and ambient factors that influence the value of junction temperature of exemplary LED panel sources. The influence of radiator’s construction, printed circuit boards, as well as the influence of ambient factors, such as ambient temperature T a and air flow velocity v were subjected to the analysis. Numerical calculations were done in the FloEFD software of the Mentor Graphics company, which is based on computational fluid dynamics (CFD). For construction of the LED thermal panel model the optical efficiency η o and real thermal resistance Rth j-c were determined in a laboratory for the applied light sources.

Suggested Citation

  • Krzysztof Baran & Antoni Różowicz & Henryk Wachta & Sebastian Różowicz & Damian Mazur, 2019. "Thermal Analysis of the Factors Influencing Junction Temperature of LED Panel Sources," Energies, MDPI, vol. 12(20), pages 1-20, October.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:20:p:3941-:d:277463
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    References listed on IDEAS

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    1. Augusto Della Torre & Gianluca Montenegro & Angelo Onorati & Sumit Khadilkar & Roberto Icarelli, 2019. "Multi-Scale CFD Modeling of Plate Heat Exchangers Including Offset-Strip Fins and Dimple-Type Turbulators for Automotive Applications," Energies, MDPI, vol. 12(15), pages 1-20, August.
    2. András Poppe & Gábor Farkas & Lajos Gaál & Gusztáv Hantos & János Hegedüs & Márta Rencz, 2019. "Multi-Domain Modelling of LEDs for Supporting Virtual Prototyping of Luminaires," Energies, MDPI, vol. 12(10), pages 1-32, May.
    3. Byung-Lip Ahn & Ji-Woo Park & Seunghwan Yoo & Jonghun Kim & Hakgeun Jeong & Seung-Bok Leigh & Cheol-Yong Jang, 2015. "Synergetic Effect between Lighting Efficiency Enhancement and Building Energy Reduction Using Alternative Thermal Operating System of Indoor LED Lighting," Energies, MDPI, vol. 8(8), pages 1-13, August.
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    Cited by:

    1. Antoni Różowicz & Henryk Wachta & Krzysztof Baran & Marcin Leśko & Sebastian Różowicz, 2022. "Arrangement of LEDs and Their Impact on Thermal Operating Conditions in High-Power Luminaires," Energies, MDPI, vol. 15(21), pages 1-17, November.
    2. Krzysztof Baran & Antoni Różowicz & Henryk Wachta & Sebastian Różowicz, 2020. "Modeling of Selected Lighting Parameters of LED Panel," Energies, MDPI, vol. 13(14), pages 1-22, July.
    3. Sebastian Różowicz & Andrzej Zawadzki & Maciej Włodarczyk & Henryk Wachta & Krzysztof Baran, 2020. "Properties of Fractional-Order Magnetic Coupling," Energies, MDPI, vol. 13(7), pages 1-16, March.
    4. Sungjoon Byun & Seounghwan Hyeon & Kwan-Soo Lee, 2022. "Guide Vane for Thermal Enhancement of a LED Heat Sink," Energies, MDPI, vol. 15(7), pages 1-13, March.
    5. Krzysztof Górecki & Przemysław Ptak, 2021. "Compact Modelling of Electrical, Optical and Thermal Properties of Multi-Colour Power LEDs Operating on a Common PCB," Energies, MDPI, vol. 14(5), pages 1-21, February.

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