傅里叶传热定律的教学探讨与应用

Teaching discussion and application of Fourier heat transfer law

系统处于稳态时,傅里叶传热遵循牛顿冷却律.应用牛顿冷却律、光伏电池单二极管模型和热力学第一律,分析光伏电池的热力学性能.研究表明,输出电压和辐射强度对光伏电池运行温度有显著影响,在标况下所预测的温度与厂商数据一致.揭示热学课程教学中扩展该律的重要性.

When the system is operated at steady state,Fourier heat transfer obeys Newton cooling law.The thermodynamic performance analysis of photovoltaic cell is analyzed by using Newton cooling law,photovoltaic single-diode model,and first law of thermodynamics.The results show that the output voltage and radiation intensity have significant effects on the operating temperature of photovoltaic cell,and the predicted temperature under standard conditions is consistent with the manufacturer′s data.The importance of extending the Newton cooling law in the teaching of thermal science is revealed.