CAJ | 학술논문

为实现大功率LED工矿灯散热器结构的轻量化设计需求，制作了一款太阳花型镁合金材质散热器，并采用实验测试与数值模拟两种方式，与相同结构的铝合金材质散热器进行了散热性能的对比分析。结果表明：在相同工作条件下，安装镁合金散热器的LED工矿灯最高温度略高，但升温速率较快，且达到稳定工作状态所需的时间较短；镁合金散热器肋片间空气的自然对流速度较大，有助于提高散热器的综合传热效率。因此，镁合金可替代铝合金，用于制备大功率LED散热器。
위실현대공솔LED공광등산열기결구적경양화설계수구，제작료일관태양화형미합금재질산열기，병채용실험측시여수치모의량충방식，여상동결구적려합금재질산열기진행료산열성능적대비분석。결과표명：재상동공작조건하，안장미합금산열기적LED공광등최고온도략고，단승온속솔교쾌，차체도은정공작상태소수적시간교단；미합금산열기륵편간공기적자연대류속도교대，유조우제고산열기적종합전열효솔。인차，미합금가체대려합금，용우제비대공솔LED산열기。
To meet the design requirements for the lightweight structure of high power LED high bay lamp heat sink, a sunflower shaped heat sink made of magnesium alloy material is fabricated. The new heat sink is compared with that made of aluminum alloy material which has the same structure in thermal performance by experimental test and numerical simulation. The results show that under the same working conditions, the LED high bay lamp on which the heat sink made of magnesium alloy has a higher maximum temperature, faster temperature rising rate and is able to reach the steady working state in a shorter time. The air velocity between the two fins of the magnesium alloy-made heat sink is larger, this helps to improve the comprehensive heat transfer efficiency of the heat sink. Therefore, as a replacement of aluminum alloy, magnesium alloy is a practicable material in the production of the high power LED heat sinks.