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Savings in Cooling Energy with a Thermal Management System for LED Lighting in Office Buildings

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  • Byung-Lip Ahn

    (Energy Saving Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Korea
    Department of Architectural Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea)

  • Ji-Woo Park

    (Energy Saving Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Korea)

  • Seunghwan Yoo

    (Energy Saving Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Korea)

  • Jonghun Kim

    (Energy Saving Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Korea)

  • Seung-Bok Leigh

    (Department of Architectural Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea)

  • Cheol-Yong Jang

    (Energy Saving Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Korea)

Abstract

Light-emitting diode (LED) lighting should be considered for lighting efficiency enhancement, however, waste heat from light-emitting diode (LED) lighting increases the internal cooling load during the summer season. In order to solve this problem we propose a thermal management system for light-emitting diode (LED) lighting with a heat exchanger module integrated with the building’s heating, ventilation, and air conditioning (HVAC) system to move the lighting’s waste heat outdoors. An experiment was carried out to investigate the thermal effects in a test chamber and the heat exchange rate between the heat sink and the duct air. The heat generated by the light-emitting diode (LED) lighting was calculated as 78.1% of light-emitting diode (LED) input power and the heat exchange rate of the lighting heat exchange module was estimated to be between 86.5% and 98.1% according to the light-emitting diode (LED) input power and the flow rate of air passing the heat sink. As a result, the average light-emitting diode (LED) lighting heat contribution rate for internal heat gain was determined as 0.05; this value was used to calculate the heating and cooling energy demand of the office building through an energy simulation program. In the simulation results, the cooling energy demand was reduced by 19.2% compared with the case of conventionally installed light-emitting diode (LED) lighting.

Suggested Citation

  • Byung-Lip Ahn & Ji-Woo Park & Seunghwan Yoo & Jonghun Kim & Seung-Bok Leigh & Cheol-Yong Jang, 2015. "Savings in Cooling Energy with a Thermal Management System for LED Lighting in Office Buildings," Energies, MDPI, vol. 8(7), pages 1-14, June.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:7:p:6658-6671:d:51869
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    References listed on IDEAS

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    1. Samantha Wermager & Stuart Baur, 2013. "Energy Analysis of a Student-Designed Solar House," Energies, MDPI, vol. 6(12), pages 1-18, December.
    2. Ahn, Byung-Lip & Jang, Cheol-Yong & Leigh, Seung-Bok & Yoo, Seunghwan & Jeong, Hakgeun, 2014. "Effect of LED lighting on the cooling and heating loads in office buildings," Applied Energy, Elsevier, vol. 113(C), pages 1484-1489.
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    4. Yeo Beom Yoon & Woo Ram Jeong & Kwang Ho Lee, 2014. "Window Material Daylighting Performance Assessment Algorithm: Comparing Radiosity and Split-Flux Methods," Energies, MDPI, vol. 7(4), pages 1-15, April.
    5. Yeo Beom Yoon & Rashmi Manandhar & Kwang Ho Lee, 2014. "Comparative Study of Two Daylighting Analysis Methods with Regard to Window Orientation and Interior Wall Reflectance," Energies, MDPI, vol. 7(9), pages 1-22, September.
    6. Alberto Gutierrez-Escolar & Ana Castillo-Martinez & Jose M. Gomez-Pulido & Jose-Maria Gutierrez-Martinez & Zlatko Stapic & Jose-Amelio Medina-Merodio, 2015. "A Study to Improve the Quality of Street Lighting in Spain," Energies, MDPI, vol. 8(2), pages 1-19, January.
    7. Sezgen, Osman & Koomey, Jonathan G, 2000. "Interactions between lighting and space conditioning energy use in US commercial buildings," Energy, Elsevier, vol. 25(8), pages 793-805.
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    Cited by:

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    2. Jose Luiz F. Barbosa & Dan Simon & Wesley P. Calixto, 2017. "Design Optimization of a High Power LED Matrix Luminaire," Energies, MDPI, vol. 10(5), pages 1-18, May.
    3. 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.
    4. Marcin Kaczmarzyk & Aleksander Starakiewicz & Aleksander Waśniowski, 2020. "Internal Heat Gains in a Lunar Base—A Contemporary Case Study," Energies, MDPI, vol. 13(12), pages 1-28, June.
    5. Jin-Cherng Shyu & Tsuni Chang & Shun-Ching Lee, 2017. "A Numerical Study on Natural Convection Heat Transfer of Handheld Projectors with a Fin Array," Energies, MDPI, vol. 10(3), pages 1-17, February.

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