Experimental Investigations of the LED Lamp with Heat Sink Inside the Synthetic Jet Actuator
The paper presents the experimental research on the thermal management of a 150 W LED lamp with heat sink inside a synthetic jet actuator. The luminous flux was generated by 320 SMD LEDs with a nominal luminous efficacy equal to 200 lm/W mounted on a single PCB. Characteristic temperatures were meas...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/24/9402 |
| _version_ | 1797459714836004864 |
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| author | Paweł Gil Joanna Wilk Slawomir Smolen Rafał Gałek Marek Markowicz Piotr Kucharski |
| author_facet | Paweł Gil Joanna Wilk Slawomir Smolen Rafał Gałek Marek Markowicz Piotr Kucharski |
| author_sort | Paweł Gil |
| collection | DOAJ |
| description | The paper presents the experimental research on the thermal management of a 150 W LED lamp with heat sink inside a synthetic jet actuator. The luminous flux was generated by 320 SMD LEDs with a nominal luminous efficacy equal to 200 lm/W mounted on a single PCB. Characteristic temperatures were measured with three different measurement techniques: thermocouples, infrared camera, and an estimation of the junction temperature from its calibrated dependence on the LED forward voltage. The temperature budget between the LED junction and ambient as well as the thermal resistance network was determined and analyzed. The energy balance of the LED lamp is presented along with the values of the heat flow rate and heat transfer coefficient in different regions of the LED lamp surface. For an input power supplied to the SJA equal to 4.50 W, the synthetic jet dissipated approximately 89% of the total heat generated by the LED lamp. The heat from the PCB was transferred through the front and rear surfaces of the board. For the input power of 4.50 W, approximately 91% of the heat generated by LEDs was conducted by the PCB substrate to the heat spreading plate, while the remaining 9% was dissipated by the front surface of the PCB, mostly by radiation. The thermal balance revealed that for the luminous efficacy of the investigated LEDs, approximately 60% of the electrical energy supplied to the LED lamp was converted into heat, while the rest was converted into light. |
| first_indexed | 2024-03-09T16:55:18Z |
| format | Article |
| id | doaj.art-fa1aa5f0f5474016a1f5d41c5fc52577 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T16:55:18Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-fa1aa5f0f5474016a1f5d41c5fc525772023-11-24T14:36:14ZengMDPI AGEnergies1996-10732022-12-011524940210.3390/en15249402Experimental Investigations of the LED Lamp with Heat Sink Inside the Synthetic Jet ActuatorPaweł Gil0Joanna Wilk1Slawomir Smolen2Rafał Gałek3Marek Markowicz4Piotr Kucharski5Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, al. Powstańców Warszawy 8, 35-959 Rzeszów, PolandFaculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, al. Powstańców Warszawy 8, 35-959 Rzeszów, PolandFaculty of Nature and Engineering, J.R. Mayer–Institute for Energy Engineering, City University of Applied Sciences Bremen, Neustadtswall 30, 28199 Bremen, GermanyFaculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, al. Powstańców Warszawy 8, 35-959 Rzeszów, PolandDoctoral School of Engineering and Technical Sciences, Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, PolandLUXON Company, ul. Kwiatowa 45, 55-330 Krępice, PolandThe paper presents the experimental research on the thermal management of a 150 W LED lamp with heat sink inside a synthetic jet actuator. The luminous flux was generated by 320 SMD LEDs with a nominal luminous efficacy equal to 200 lm/W mounted on a single PCB. Characteristic temperatures were measured with three different measurement techniques: thermocouples, infrared camera, and an estimation of the junction temperature from its calibrated dependence on the LED forward voltage. The temperature budget between the LED junction and ambient as well as the thermal resistance network was determined and analyzed. The energy balance of the LED lamp is presented along with the values of the heat flow rate and heat transfer coefficient in different regions of the LED lamp surface. For an input power supplied to the SJA equal to 4.50 W, the synthetic jet dissipated approximately 89% of the total heat generated by the LED lamp. The heat from the PCB was transferred through the front and rear surfaces of the board. For the input power of 4.50 W, approximately 91% of the heat generated by LEDs was conducted by the PCB substrate to the heat spreading plate, while the remaining 9% was dissipated by the front surface of the PCB, mostly by radiation. The thermal balance revealed that for the luminous efficacy of the investigated LEDs, approximately 60% of the electrical energy supplied to the LED lamp was converted into heat, while the rest was converted into light.https://www.mdpi.com/1996-1073/15/24/9402LEDthermal managementsynthetic jetheat transfer coefficient |
| spellingShingle | Paweł Gil Joanna Wilk Slawomir Smolen Rafał Gałek Marek Markowicz Piotr Kucharski Experimental Investigations of the LED Lamp with Heat Sink Inside the Synthetic Jet Actuator Energies LED thermal management synthetic jet heat transfer coefficient |
| title | Experimental Investigations of the LED Lamp with Heat Sink Inside the Synthetic Jet Actuator |
| title_full | Experimental Investigations of the LED Lamp with Heat Sink Inside the Synthetic Jet Actuator |
| title_fullStr | Experimental Investigations of the LED Lamp with Heat Sink Inside the Synthetic Jet Actuator |
| title_full_unstemmed | Experimental Investigations of the LED Lamp with Heat Sink Inside the Synthetic Jet Actuator |
| title_short | Experimental Investigations of the LED Lamp with Heat Sink Inside the Synthetic Jet Actuator |
| title_sort | experimental investigations of the led lamp with heat sink inside the synthetic jet actuator |
| topic | LED thermal management synthetic jet heat transfer coefficient |
| url | https://www.mdpi.com/1996-1073/15/24/9402 |
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