Chimney Effect on Natural Convection Cooling of a Transistor Mounted on a Cooling Fin

Chimney Effect on Natural Convection Cooling of a Transistor Mounted on a Cooling Fin
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安装在散热片上的晶体管自然对流冷却的烟囱效应

DOI：
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发表时间：
2009
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影响因子：
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通讯作者：
M. D. Paepe
M. D. Paepe
中科院分区：
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文献类型：
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作者：
G. Mey;M. Wójcik;J. Pilarski;M. Lasota;J. Banaszczyk;B. Vermeersch;A. Napieralski;M. D. Paepe

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测量了安装在散热片上的晶体管结的热阻Z（th）（j Ω）。该装置被放置在烟囱内，以增强自然对流冷却。从热阻Z（th）（j ω）可以清楚地看到烟囱对热阻R-th=Z（th）（j ω =0）减小的影响。实验上观察到的最大改善几乎为20%。测量作为角频率ω的函数的热阻抗提供了关于受烟囱影响的热路径的具体信息。
The thermal impedance Z(th)(j omega) has been measured for the junction of a transistor mounted on a cooling fin. The setup was put inside a chimney in order to enhance the natural convection cooling. From the thermal impedance Z(th)(j omega) the influence of the chimney on the reduction in thermal resistance R-th=Z(th)(j omega=0) is clearly visible. A maximum improvement of almost 20% has been observed experimentally. Measuring the thermal impedance as a function of the angular frequency omega provides specific information about the thermal path being influenced by the chimney.