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The energy efficiency and output power of a quantum thermoelectric system with multiple electric currents and only one heat current are studied.The system is connected to the hot heat bath(cold bath)through one terminal(multiple terminals).In such configurations,there are multiple thermoelectric effects coexisting in the system.Using the Landauer–Buttiker formalism,we show that the cooperation between the two thermoelectric effects in the three-terminal thermoelectric systems can lead to markedly improved performance of the heat engine.Such improvement also occurs in four-terminal thermoelectric heat engines with three output electric currents.Cooperative effects in these multi-terminal thermoelectric systems can considerably enlarge the physical parameter region that realizes high energy efficiency and output power.For refrigeration,we find that the energy efficiency can also be substantially improved by exploiting the cooperative effects in multi-terminal thermoelectric systems.All these results reveal a useful approach toward high-performance thermoelectric energy conversion in multi-terminal mesoscopic systems. 相似文献
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在2003年高考诸多组合模式的所有考试科目中,数学高考江苏卷整卷难度大、灵活性强,成为今年高考试卷中最"闪亮"的一科,而该卷的压轴题则成为众多试题中一颗耀眼的"明珠".下面就来探讨与赏析本题的解法. 相似文献
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