...
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Toward high-energy-density, high-efficiency, and moderate-temperature chip-scale thermophotovoltaics
【24h】

Toward high-energy-density, high-efficiency, and moderate-temperature chip-scale thermophotovoltaics

机译:Toward high-energy-density, high-efficiency, and moderate-temperature chip-scale thermophotovoltaics

获取原文
获取原文并翻译 | 示例
           

摘要

The challenging problem of ultra-high-energy-density, high-efficiency, and small-scale portable power generation is addressed here using a distinctive thermophotovoltaic energy conversion mechanism and chip-based system design, which we name the microthermophotovoltaic (μTPV) generator. The approach is predicted to be capable of up to 32 efficient heat-to-electricity conversion within a millimeter-scale form factor. Although considerable technological barriers need to be overcome to reach full performance, we have performed a robust experimental demonstration that validates the theoretical framework and the key system components. Even with a much-simplified μTPV system design with theoretical efficiency prediction of 2.7, we experimentally demonstrate 2.5 efficiency. The μTPV experimental system that was built and tested comprises a silicon propane microcombustor, an integrated high-temperature photonic crystal selective thermal emitter, four 0.55-eV GaInAsSb thermophotovoltaic diodes, and an ultrahigh- efficiency maximum power-point tracking power electronics converter. The system was demonstrated to operate up to 800 °C (silicon microcombustor temperature)with an input thermal power of 13.7W, generating 344 mW of electric power over a 1-cm~2 area.

著录项

获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号