Análisis del rendimiento térmico de un calentador solar de aire de convección natural con absorbente corrugado y lecho poroso

Autores/as

  • Jose Quiñonez Choquecota Departamento de Físico Matemáticas, Universidad Nacional del Altiplano, Av. Floral 1153, 21001 Puno, Perú

DOI:

https://doi.org/10.21754/tecnia.v21i2.1060

Palabras clave:

abastecimiento de energía, balance energético, calefacción solar, transferencia de calor

Resumen

Se analiza el efecto del lecho poroso en un calentador solar de aire con placa absorbente corrugado en V y un diseño que facilita la libre convección, en términos de parámetros de rendimiento y eficiencia térmica. El colector se evaluó, con y sin lecho poroso, en condiciones climáticas similares al montar sobre una pared vertical. Los resultados revelaron que el flujo másico está directamente afectado con la temperatura ambiente. Se observó que el lecho poroso afecta la subcapa laminar de la placa absorbente generando mayor turbulencia que mejora la tasa de transferencia de calor, por tanto, el colector con lecho poroso presenta mayor temperatura en su interior y disminuye ligeramente su eficiencia. Además, el lecho poroso funciona como almacén de calor que reduce inestabilidades lo cual permite una temperatura de salida uniforme y permite aumentar el tiempo de funcionamiento. El colector es de bajo costo, es respetuoso con el medio ambiente y factible para calefacción de ambientes en zonas frígidas.

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Citas

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Publicado

2021-07-25

Cómo citar

[1]
J. Quiñonez Choquecota, «Análisis del rendimiento térmico de un calentador solar de aire de convección natural con absorbente corrugado y lecho poroso», TEC, vol. 31, n.º 2, pp. 90–96, jul. 2021.

Número

Sección

Energía solar y fotovoltaica