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Desarrollo de un composite ácido cáprico/ácido mirístico/soporte poroso para el almacenamiento de energía térmica
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Resumo(s)
RESUMEN: Un composite constituido del eutéctico binario ácido cáprico/ácido mirístico (CA:MA) y un soporte mineral poroso colombiano fue desarrollado para aplicaciones de almacenamiento de energía térmica alrededor de los 26 °C. Diferentes porcentajes de impregnación de CA:MA (25%, 35% y 40%) en el soporte fueron estudiados para determinar los valores óptimos en términos de filtración. El mejor composite obtenido, con el 35% de CA:MA y menos del 1,5% de filtración, fue caracterizado térmicamente mediante calorimetría diferencial de barrido (DSC), así mismo, se evaluaron su conductividad térmica, capacidad calorífica y estabilidad térmica a través de las técnicas del hilo caliente, calorimetría diferencial de barrido modulada (MDSC) y ciclado térmico, respectivamente.
ABSTRACT: A composite consisting of the binary eutectic capric acid/myristic acid (CA:MA) and a Colombian porous mineral support was developed for thermal energy storage applications around 26 °C. Different percentages of CA:MA impregnation (25%, 35% and 40%) in the support were studied to determine the optimal values in terms of leakage. The best composite obtained, with 35% CA:MA and less than 1.5% of leakage, was thermally characterized by differential scanning calorimetry (DSC). Besides, its thermal conductivity, heat capacity and thermal stability were evaluated through the techniques of hot wire, modulated differential scanning calorimetry (MDSC) and thermal cycling, respectively.
ABSTRACT: A composite consisting of the binary eutectic capric acid/myristic acid (CA:MA) and a Colombian porous mineral support was developed for thermal energy storage applications around 26 °C. Different percentages of CA:MA impregnation (25%, 35% and 40%) in the support were studied to determine the optimal values in terms of leakage. The best composite obtained, with 35% CA:MA and less than 1.5% of leakage, was thermally characterized by differential scanning calorimetry (DSC). Besides, its thermal conductivity, heat capacity and thermal stability were evaluated through the techniques of hot wire, modulated differential scanning calorimetry (MDSC) and thermal cycling, respectively.
Descrição
CIES2020 - XVII Congresso Ibérico e XIII Congresso Ibero-americano de Energia Solar
Palavras-chave
Thermal energy storage Fatty acids
Contexto Educativo
Citação
Cárdenas-Ramírez, C... [et.al.] - Desarrollo de un composite ácido cáprico/ácido mirístico/soporte poroso para el almacenamiento de energía térmica. In: CIES2020: As Energias Renováveis na Transição Energética: Livro de Comunicações do XVII Congresso Ibérico e XIII Congresso Ibero-americano de Energia Solar. Helder Gonçalves, Manuel Romero (Ed.). Lisboa, Portugal: LNEG, 3-5 Novembro, 2020, p. 755-760
Editora
LNEG - Laboratório Nacional de Energia e Geologia