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Generación de energía eléctrica a partir de fuentes térmicas radiativas de temperatura moderada

Paul S Davids1, Jared Kirsch2, Andrew Starbuck2

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Los investigadores convirtieron el calor residual en electricidad utilizando un nuevo diodo de túnel CMOS. Esta tecnología genera eficientemente energía a partir de fuentes térmicas de temperatura moderada, ofreciendo potencial para ahorrar energía y alimentar la electrónica.

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Área de la Ciencia:

  • Conversión de energía
  • Ciencias de los materiales
  • Física de los semiconductores

Sus antecedentes:

  • Las fuentes térmicas de temperatura moderada (100 ° 400 ° C) generan calor residual como subproducto de varios procesos industriales y computacionales.
  • La recolección eficiente de este calor residual radiado sigue siendo un desafío importante en la recuperación de energía.

Objetivo del estudio:

  • Para demostrar la conversión de la radiación térmica en energía eléctrica.
  • Investigar un nuevo diodo túnel de metal-óxido-silicio (CMOS) acoplado a rejilla bipolar para esta aplicación.

Principales métodos:

  • Utilizó un diodo de túnel CMOS acoplado a rejilla bipolar.
  • Empleó un mecanismo de bombeo de carga de túneles asistido por fotones en dos pasos.
  • Probado experimentalmente con fuentes térmicas de cuerpo negro de banda ancha.

Principales resultados:

  • Se logra la generación de energía eléctrica a partir de la radiación térmica.
  • Se han demostrado densidades de potencia convertidas de 27 a 61 microwatts por centímetro cuadrado.
  • Generación de energía observada a partir de fuentes térmicas entre 250°C y 400°C.

Conclusiones:

  • El diodo túnel CMOS desarrollado permite la conversión escalable y eficiente del calor residual irradiado en energía eléctrica.
  • Esta tecnología puede reducir el consumo total de energía.
  • Las aplicaciones potenciales incluyen la alimentación electrónica y los sensores que utilizan el calor residual.