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Heat Pipe Science and Technology, An International Journal

年間 4 号発行

ISSN 印刷: 2151-7975

ISSN オンライン: 2151-7991

TWO-PHASE SYSTEMS FOR LIGHT-EMITTING DIODES COOLING

巻 2, 発行 1-4, 2011, pp. 121-131
DOI: 10.1615/HeatPipeScieTech.v2.i1-4.130
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要約

Extensive development of the light-emitting diode (LED) devices on the basis of LED matrix offers capabilities for LED to occupy an increasingly important place for street and industrial lighting as more reliable and energy-efficient. However, there are not enough experimental data on the optimization of the cooling systems for LED devices. Traditionally, the cooling systems for LED devices are designed with even pitch of LED locations on the radiator's surface. By the increase of LED power the radiator's surface and the distance between the LED locations grows correspondingly. It results in the increase of the mass and size of the LED device. This paper presents some designs of twophase thermal control systems for the LED cooling on the basis of conventional thermosyphon, loop thermosyphon, and heat pipe and studies the experimental data, which were investigated for the twophase systems considering the gravity influence. The presented results include: some designs of the two-phase systems for the LED cooling; start-up characteristics under low, high, and intermediate powers; power cycling (monotonic and random) and sink temperature cycling behavior; and temperature drop and temperature oscillations during startup and working regime.

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  1. Kiseev V., Sazhin O., Loop Heat Pipes with a Steam Jet Pump, Journal of Engineering Physics and Thermophysics, 93, 3, 2020. Crossref

  2. Pekur D.V., Sorokin V.M., Nikolaenko Yu.E., Thermal characteristics of a compact LED luminaire with a cooling system based on heat pipes, Thermal Science and Engineering Progress, 18, 2020. Crossref

  3. Kumar Prem, Sahu Gopinath, Chatterjee Debartha, Khandekar Sameer, Copper wick based loop heat pipe for thermal management of a high-power LED module, Applied Thermal Engineering, 211, 2022. Crossref

  4. Kiseev Valery, Sazhin Oleg, The first ammonia loop heat pipe: Long-life operation test, International Journal of Heat and Mass Transfer, 115, 2017. Crossref

  5. Kiseev Valery, Sazhin Oleg, An experimental study of loop heat pipes with steam jet pump, International Journal of Heat and Mass Transfer, 115, 2017. Crossref

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