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RECOLECTOR DE MICRO ENERGÍA TÉRMICA DE BAJA TEMPERATURA

Authors: CARLOS UGALDE CABALLERO; JUAN ANTUNEZ MARIN;

RECOLECTOR DE MICRO ENERGÍA TÉRMICA DE BAJA TEMPERATURA

Abstract

Este trabajo describe la implementacion de un recolector de micro energia termica con capacidad para alimentar dispositivos electronicos comerciales de ultra bajo consumo a partir de gradientes de temperatura pequenos. Aunque existen generadores termoelectricos comerciales, estos estan optimizados para temperaturas y gradientes de temperatura altos y no son adecuados para extraer energia de fuentes de baja temperatura como la radiacion solar o el calor del cuerpo humano. En algunos trabajos de investigacion se ha experimentado con recolectores de este tipo, pero es necesario que puedan adaptarse a los requerimientos electricos de dispositivos comerciales. Se propone en el presente trabajo el uso de transductores de efecto Peltier funcionando como generadores termoelectricos cuya salida se acopla a un acondicionador de ultra baja potencia comercial muy reciente, a fin de extraer la mayor cantidad de energia posible y acoplar los niveles de voltaje requeridos por circuiteria electronica comercial. Se caracterizaron tres diferentes modulos Peltier, obteniendo los valores de su resistencia interna, potencia generada y coeficiente Seebeck, que se relacionan con la capacidad de generacion de energia en funcion de un gradiente de temperatura. Haciendo uso de estos datos se hicieron inferencias acerca de la seleccion del modulo mas adecuado y se simularon y determinaron experimentalmente los componentes adecuados para el acondicionador de potencia que eleva el mili voltaje del modulo a niveles de voltaje estandar regulados, logrando eficiencias en la conversion termica a electrica de 18 a 30 % con potencias generadas en el rango de 5 a 8 mW para gradientes desde 10°C hasta 25°C, generando de 6 a 9 veces mayor cantidad de potencia que lo requerido para un nodo de red inalambrica.

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Powered by OpenAIRE graph
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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