Thermal analysis of high power LED package with heat pipe heat sink

Effective and timely heat removal of high-power Light emitting diodes (LEDs) is crucial to their performance and lifetime. The strategy about using a screen mesh wick heat pipe with SiO 2 nanofluid as the working fluid for LED heat dissipation was comprehensively evaluated. An experimental system is set up to study the heat transfer performance of the heat pipe. The obtained experimental results give optimal conditions/parameters for the heat pipe: 60% charging ratio, 30 incline angle, and 1wt% concentration of the nanofluid. Compared with the heat pipe using the secondary distilled water as the working fluid, the thermal resistance of the heat pipe using the SiO 2 nanofluid as the working fluid is generally reduced by around 35-40% for the investigated heat load range: 1-60 W. Based on an equivalent heat conductivity of the SiO 2 nanofluid heat pipe derived from the experimental results, an Icepak modeling effort to the cooling system of a 60 watt LED lamp is then expended. The numerical results show that the temperature of the LED lamp remains low and quite uniform across the LED chip region, indicating the technical feasibility of using this class of heat pipes for cooling of high-power LEDs.

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“…Thermal performance of a heat pipe can be evaluated with the overall thermal resistance [32], which is defined as:…”

Section: Resultsmentioning

confidence: 99%

A Feasibility Study About Using SiO₂Nanofluid Screen Mesh Wick Heat Pipe for Cooling of High-Power LEDs

Wang

Zhang

Cen

et al. 2015

Heat Transfer Engineering

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“…Therefore, thermal management, which ensures the rapid dissipation of the heat that is generated in the LED chip through a heat sink, is crucial for LED modules. Various solutions have been proposed [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Using AlN-Coated Heat Sink to Improve the Heat Dissipation of LED Packages

Jean

Jiang

et al. 2016

MATEC Web Conf.

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Abstract. This study optimizes aluminum nitride (AlN) ceramics, in order to enhance the thermal performance of light-emitting diode (LED) packages. AlN coatings are grown on copper/ aluminum substrates as a heat interface material, using an electrostatic spraying process. The effect of the deposition parameters on the coatings is determined. The thermal performance of AlN coated Cu/Al substrates is evaluated in terms of the heat dissipated and compared by measuring the LED case temperature. The structure and properties of the coating are also examined a scanning electron microscopy (SEM). In sum, the thermal performance of the LED is increased and good heat resistance characteristics are obtained. The results show that using AlN ceramic coating on a copper/aluminum substrate increases the thermal performance.

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“…Numerous researchers have analyzed natural-and forced-convection heat sinks with diverse fin configurations in rectangular and radial shapes and heat pipe connections. The natural-convection type is preferred on account of needing no additional fans or electric consumption, even though natural-convection heat sinks are thermally less effective, being consequently less compact and heavier than forced-convection types, and require careful design to achieve the required thermal performance [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2015

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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. OPEN ACCESSEnergies 2015, 8 6659

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Thermal analysis of high power LED package with heat pipe heat sink

Cited by 100 publications

References 11 publications

A Feasibility Study About Using SiO₂Nanofluid Screen Mesh Wick Heat Pipe for Cooling of High-Power LEDs

A Feasibility Study About Using SiO₂Nanofluid Screen Mesh Wick Heat Pipe for Cooling of High-Power LEDs

Using AlN-Coated Heat Sink to Improve the Heat Dissipation of LED Packages

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

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Thermal analysis of high power LED package with heat pipe heat sink

Cited by 100 publications

References 11 publications

A Feasibility Study About Using SiO2Nanofluid Screen Mesh Wick Heat Pipe for Cooling of High-Power LEDs

A Feasibility Study About Using SiO2Nanofluid Screen Mesh Wick Heat Pipe for Cooling of High-Power LEDs

Using AlN-Coated Heat Sink to Improve the Heat Dissipation of LED Packages

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

Contact Info

Product

Resources

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A Feasibility Study About Using SiO₂Nanofluid Screen Mesh Wick Heat Pipe for Cooling of High-Power LEDs

A Feasibility Study About Using SiO₂Nanofluid Screen Mesh Wick Heat Pipe for Cooling of High-Power LEDs