Application of entransy dissipation extremum principle in radiative heat transfer optimization
Application of entransy dissipation extremum principle in radiative heat transfer optimization
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DOI：
10.1007/s11431-008-0141-6
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发表时间：
2008-08
期刊：
影响因子：
--
通讯作者：
Jing Wu;Xin-gang Liang
中科院分区：
文献类型：
--
作者：
Jing Wu;Xin-gang Liang
基于与热传导和热对流过程的类比，引入了辐射传热中火积通量和火积耗散的概念。由于不可逆性，火积在辐射传热过程中将被部分消散。火积耗散的极值原理是为了优化辐射传热过程而开发的。该原理指出，对于固定边界温度，当火积耗散最大化时，辐射传热得到优化，而对于固定边界热通量，当火积耗散最小化时，辐射传热过程得到优化。最后，给出了火积耗散极值原理的应用示例。
The concepts of entransy flux and entransy dissipation in radiative heat transfer were introduced based on the analogy with heat conduction and heat convection processes. Entransy will be partially dissipated during the radiative heat transfer processes due to the irreversibility. The extremum principle of entransy dissipation was developed for optimizing radiative heat transfer processes. This principle states that for a fixed boundary temperature the radiative heat transfer is optimized when the entransy dissipation is maximized, while for a fixed boundary heat flux the radiative heat transfer process is optimized when the entransy dissipation is minimized. Finally, examples for the application of the entransy dissipation extremum principle are presented.