Efficiency and power density potential of combustion-driven thermophotovoltaic systems using GaSb photovoltaic cells
Efficiency and power density potential of combustion-driven thermophotovoltaic systems using GaSb photovoltaic cells
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DOI：
10.1109/16.902740
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发表时间：
2001-02
影响因子：
3.1
通讯作者：
M. Zenker;A. Heinzel;G. Stollwerck;J. Ferber;J. Luther
中科院分区：
文献类型：
--
作者：
M. Zenker;A. Heinzel;G. Stollwerck;J. Ferber;J. Luther
基于材料和光伏（PV）电池技术的最新进展，对热光伏（TPV）能量转换的重新关注需要对TPV效率和功率密度潜力进行新的评估。在本文中，我们解决了TPV系统设计中的一些重要问题。我们分三步进行，分析1）热力学极限，2）理想化，3）现实模型，基于对当前技术状态的外推。在TPV系统中，转换成电的辐射适应PV电池的光谱响应。这可以通过不同的手段来实现，这些手段都进行了详细的研究。宽带和选择性辐射器，和光学过滤器被认为是。我们专注于使用低带隙GaSb光伏电池的燃烧驱动系统。在1500 K时，GaSb电池和辐射器的热力学极限效率为60.5%，输出功率密度为3 W/cm/sup 2/。对于理想的系统模型，效率为34%，功率密度为2.2 W/cm/sup 2/。对于具有宽带辐射器和滤波器的实际系统，估计为9%和1.2 W/cm/sup 2/;使用无滤波器的选择性辐射器，预计为16%和1 W/cm/sup 2/。通过充分的开发努力，应该可以实现这种级别的性能值。
The renewed interest in thermophotovoltaic (TPV) energy conversion, based on recent progress in materials and photovoltaic (PV) cell technology, requires a new evaluation of the TPV efficiency and power density potential. In this paper, we address some important points in TPV system design. We proceed in three steps, analyzing 1) the thermodynamic limit, 2) an idealized, and 3) a realistic model, based on an extrapolation of the current state of technology. In a TPV system, the radiation converted to electricity is adapted to the spectral response of the PV cell. This can be achieved by different means, which are examined in detail. Broadband and selective radiators, and optical filters are considered. We focus on combustion driven systems using low bandgap GaSb PV cells. For a system containing GaSb cells and a radiator at 1500 K, we find a thermodynamic limit efficiency of 60.5% and an output power density of 3 W/cm/sup 2/. For an idealized system model, an efficiency of 34% and a power density of 2.2 W/cm/sup 2/ are determined. For a realistic system with a broadband radiator and a filter, 9% and 1.2 W/cm/sup 2/ are estimated; using a selective radiator without filter, 16% and 1 W/cm/sup 2/ are expected. Performance values of this order should be achievable with a sufficient development effort.