热机最大功率时的不可逆性和效率：热电generator的说明性例子
Irreversibilities and efficiency at maximum power of heat engines: illustrative case of a thermoelectric generator
摘要：
热电发生器特别适合于研究固态系统中物质和热量耦合传输的不可逆过程。我们研究了在最大功率的强耦合制度，其中的热通量是proportionnal发电机内的电流的效率。我们证明，取决于源的不可逆性，我们得到的外部耗散或内部耗散的最大功率的通用效率的Curzon-Ahlborn效率。这两个极端之间的持续变化是显而易见的。研究了接触热导不对称性对接触热导的影响。
英文摘要：
Thermoelectric generators are particularly suitable to investigate the irreversible processes which govern the coupled transport of matter and heat in solid-state systems. We study the efficiency at maximum power in the strong coupling regime, where the thermal flux is proportionnal to the electrical current inside the generator. We demonstrate that depending on the source of irreversibility we obtain either the Curzon-Ahlborn efficiency for external dissipation or a universal efficiency at maximum power for internal dissipation. A continuous change between these two extremes is evidenced. Effects of dissymetry of thermal contact conductance are also investigated.
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