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The comparative study on thermal performance and life time of liquid cooling LED bulb lamp and traditional LED bulb lamp

机译:液冷LED球泡灯与传统LED球泡灯的热性能和寿命比较研究

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LED bulb lamp dissipates its heat through the metal heat sink. There are two defects, the bad thermal performance and the high price. Then the liquid cooling LED bulb lamp is proposed. But there is little research about its thermal performance and life time. The objective of this paper is to compare thermal performance and life time between liquid cooling LED bulb lamp and the traditional LED bulb lamp with metal heat sink. The transient and steady temperature characteristics of these two lamps are simulated with finite element analysis software, the temperature variation curves and simulating steady temperature fields are acquired, and the life time is estimated over the life cycle expression. The result shows that the junction temperature of liquid cooling lamp is 40°C lower and the theoretical life time is 6.28 times longer than the traditional LED lamp at 3 Watt. The rising rate of junction temperature of liquid cooling LED lamp is slower. The liquid cooling structure is more reasonable and the life is longer.
机译:LED球泡灯通过金属散热器散发热量。有两个缺陷,热性能差和价格高。然后提出了液冷LED球泡灯。但是,关于其热性能和使用寿命的研究很少。本文的目的是比较液体冷却LED球泡灯与传统的带有金属散热器的LED球泡灯之间的热性能和使用寿命。使用有限元分析软件对这两种灯的瞬态和稳态温度特性进行了仿真,获得了温度变化曲线和模拟稳态温度场,并在整个生命周期表达式中估算了使用寿命。结果表明,液体冷却灯的结温比传统的3瓦LED灯低40°C,理论寿命是传统灯的6.28倍。液冷LED灯的结温上升速度较慢。液体冷却结构更合理,寿命更长。

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