中国照明电器
中國照明電器
중국조명전기
CHINA LIGHT & LIGHTING
2012年
10期
9-12
,共4页
大功率LED%热阻%结温%EFD
大功率LED%熱阻%結溫%EFD
대공솔LED%열조%결온%EFD
high-power LED%thermal resistance%junction temperature%EFD
采用热阻法建立了4w大功率LED照明灯的热传导模型，从而得出散热器有效散热面积；然后对所设计的散热器采用有限元仿真得到稳态温度分布，并进一步利用EFD方法进行自然对流热分析；最后通过热测试实验验证来理论和仿真分析结果。结果表明，所设计的散热器满足LED使用要求，最高温度小于65℃。该研究成果对设计高散热效率的LED灯具具有指导意义。
採用熱阻法建立瞭4w大功率LED照明燈的熱傳導模型，從而得齣散熱器有效散熱麵積；然後對所設計的散熱器採用有限元倣真得到穩態溫度分佈，併進一步利用EFD方法進行自然對流熱分析；最後通過熱測試實驗驗證來理論和倣真分析結果。結果錶明，所設計的散熱器滿足LED使用要求，最高溫度小于65℃。該研究成果對設計高散熱效率的LED燈具具有指導意義。
채용열조법건립료4w대공솔LED조명등적열전도모형，종이득출산열기유효산열면적；연후대소설계적산열기채용유한원방진득도은태온도분포，병진일보이용EFD방법진행자연대류열분석；최후통과열측시실험험증래이론화방진분석결과。결과표명，소설계적산열기만족LED사용요구，최고온도소우65℃。해연구성과대설계고산열효솔적LED등구구유지도의의。
Based on the theory of thermal resistance, the heat conduction model of a 4W high-power LED lamp is obtained and the effective cooling area of the radiator is computed. According to the finite element method, the steady-state temperature distribution of the radiator is simulated, and using the EFD method the natural convection thermal analysis is conducted. Finally the heat experiment is conducted to verify the simulation results. The results show that the radiator meet the application requirement of LED, namely the maximum temperature is less than 65℃. The research will guide the design of LED lighting with high heat dissipation efficiency.
