基于差分传热法的灯具峰值温度评估与分析

Evaluation and Analysis on Peak Temperature of Luminaires Based on Differential Heat Transfer Method

为通过计算方法来评估LED灯具工作时的峰值温度,本文在设计一款新型大功率LED灯具基础上,在球坐标下建立灯具的空间数学模型,利用有限差分法计算灯具不同位置处的温度分布,然后采用流体仿真软件对模型进行散热分析,得到灯具不同部件处的温度云图和监测点处的温度仿真数值。最后将计算结果与流体仿真结果进行对比,验证了有限差分计算方法的准确性和实用性。为灯具结构的散热设计提供了一种全新的计算方法理论。

To study a calculation method to evaluate the peak temperature of LED luminaire during operation,this article is designing a new type of luminaire based on the power LEDs,the spatial mathematical model of the luminaire established under spherical coordinates.The temperature distribution at different positions of the luminaires is calculated by the finite difference method,and then the fluid simulation software is used to analyze the heat dissipation of the model,and the temperature cloud diagrams and the temperature simulation value at the monitoring point at different parts of the luminaire are obtained.Finally,the calculation results are compared with the fluid simulation results to verify the accuracy and practicability of the finite difference calculation method.A new calculation method theory is provided for the heat dissipation design of the luminaire structure.