Research on The Surface Convection Heat Transfer Coefficient of LED Lamp

LI Jing-song; YANG Qing-xin; NIU Ping-juan; ZHANG Xian; ZHANG Jian-xin; JIN Liang; LI Yang

doi:10.3788/fgxb20123306.0628

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Research on The Surface Convection Heat Transfer Coefficient of LED Lamp

paper | 更新时间：2020-08-12

- Research on The Surface Convection Heat Transfer Coefficient of LED Lamp
- Chinese Journal of Luminescence Vol. 33, Issue 6, Pages: 628-632(2012)
- 作者机构：
  
  1. 天津工业大学电工电能新技术天津市重点实验室天津,300387
  2. 天津工业大学大功率半导体照明应用系统教育部工程研究中心天津,300387
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20123306.0628
  CLC： TN312.8
- Received：27 February 2012，
  
  Revised：2012-4-10，
  
  Published Online：10 June 2012，
  
  Published：10 June 2012
- 稿件说明：
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李劲松, 杨庆新, 牛萍娟, 张献, 张建新, 金亮, 李阳, 孙连根. LED灯表面对流换热系数的测算研究[J]. 发光学报, 2012,(6): 628-632

LI Jin-Song, YANG Qing-Xin, NIU Ping-Juan, ZHANG Xian, ZHANG Jian-Xin, JIN Liang, LI Yang, SUN Lian-Gen. Research on The Surface Convection Heat Transfer Coefficient of LED Lamp[J]. Chinese Journal of Luminescence, 2012,(6): 628-632
李劲松, 杨庆新, 牛萍娟, 张献, 张建新, 金亮, 李阳, 孙连根. LED灯表面对流换热系数的测算研究[J]. 发光学报, 2012,(6): 628-632 DOI： 10.3788/fgxb20123306.0628.

LI Jin-Song, YANG Qing-Xin, NIU Ping-Juan, ZHANG Xian, ZHANG Jian-Xin, JIN Liang, LI Yang, SUN Lian-Gen. Research on The Surface Convection Heat Transfer Coefficient of LED Lamp[J]. Chinese Journal of Luminescence, 2012,(6): 628-632 DOI： 10.3788/fgxb20123306.0628.

摘要

提出了一种在第三类边界条件下

根据LED灯瞬态温度场的变化规律

通过对其表面温度的实际数值测定来推算LED灯表面对流换热系数的快速测定方法。基于对流热平衡理论

设计了一种可以在较高表面换热强度条件下进行测试的装置

通过实验测定LED灯上下表面的温度

结合曲线拟合对实测数据进行数理分析

得到较宽范围内的表面对流换热系数。实验结果表明:该测试方法简单、实用

测试时间较短(实验准备与数据测定大约需要30 min)

测试精度较高(数据拟合误差不高于0.2%)

可靠性强

可以用于工程热设计等多种相关发热体表面对流换热系数的测定。

Abstract

This paper presented a rapid determination method

which was based on the variation of LED lamp transient temperature field and the third boundary condition. It used the surface temperature measured values of LED lamp to calculate its surface convective thermal transfer coefficient. Based on balance theory of convective heat

we designed test equipment that can work under a higher intensity of thermal transfer conditions of the surface. Experimental results show that the test method is simple and practical

the time is short (~30 min)

and the accuracy is high (<0.2%) and reliable. It can be used for projects that related to surface thermal convection coefficient measurements.

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Keywords

references

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