A review on sensible heat based packed bed solar thermal energy storage system for low temperature applications

Gautam, Abhishek; Saini, R.P.

doi:10.1016/j.solener.2020.07.027

Cited by 123 publications

(32 citation statements)

References 99 publications

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“…This type of renewable energy can substitute or re-duce the use of fossil fuels and due to the existence of a competitive market it is considered as one of the most economic commercial alternatives for producing heat [12]. However, the intermittency of solar energy makes necessary to have available auxiliary thermal storage systems, which results in larger investment costs and, in turn, lower economic viability for the execution of new projects [13]. Thermal energy may be stored in the form of latent heat or sensible heat; however, in the latent heat mechanism with phase change materials (PCM) it is required a smaller storage volume since the energy density is larger than in heat sensible materials [7].…”

Section: The Use Of Solar Thermal Energymentioning

confidence: 99%

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2021

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Section: The Use Of Solar Thermal Energymentioning

confidence: 99%

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2021

ings

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“…Este tipo de energía renovable es capaz de sustituir o reducir el uso de combustibles fósiles y debido a la existencia de un mercado competitivo se considera como una de las alternativas comerciales más económicas para la producción de calor [12]. Sin embargo, la intermitencia de la energía solar hace necesario disponer de sistemas auxiliares de almacenamiento térmico, lo que resulta en mayores costos de inversión y, a su vez, menor viabilidad económica para la ejecución de nuevos proyectos [13]. La energía térmica se puede almacenar en forma de calor latente o calor sensible; no obstante, en el mecanismo de calor latente con materiales de cambio de fase o Phase change materials (PCM) se requiere un menor volumen de almacenamiento debido a que la densidad de energía es mayor que en los materiales de calor sensible [7].…”

Section: La Energía Solar Térmica Y Su Aprovechamientounclassified

Distanciamiento social ante la COVID-19: Simulación del aforo máximo de personas mediante PHP

Carrión-Chamba

Murillo-Torres

Montero-Izquierdo

2021

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El consumo energético asociado al sector de la industria representa el 38 % de la demanda de energía a nivel global, siendo un aspecto importante que marca el desarrollo de un país. En este sentido, es sumamente importante diversificar las distintas fuentes de energía e incorporar el uso de fuentes renovables de energía, como la solar, no solamente con la idea de asegurar el suministro energético, sino también considerando como elementos que permitan la reducción de las emisiones generadas por el uso de combustibles fósiles. El presente trabajo aborda las principales tecnologías de colectores solares que pueden ser incorporadas a distintos tipos de industrias, basado en experiencias e investigaciones en otros países. Sobre la base de esta revisión, se ha visto que una buena parte de las industrias a nivel mundial requieren temperaturas en sus procesos hasta los 250 °C, lo que hace idóneo el uso de esta tecnología. En función de cada industria, se podrán usar colectores solares de placa plana, de tubos de vacío, del tipo Fresnel o cilindro parabólicos. Por último, se detallan los ahorros asociados a algunas instalaciones y se abordan los desafíos relacionados con este sector.

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“…1,2 Thermal energy storage (TES) is an appropriate solution to solve the unbalance between energy demand and supply. 3,4 Generally, TES can be commonly achieved as sensible heat storage, [5][6][7] latent heat storage (LHS), [8][9][10] and thermochemical storage [11][12][13] based on the way thermal energy is stored.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of metal‐oxide nanoparticles on the thermal properties of erythritol for thermal energy storage

Zhou

et al. 2022

Asia-Pacific J Chem Eng

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Erythritol has attracted wide attention due to high latent heat of 297.2 kJ/kg and excellent chemical stability as a medium-to low-temperature thermal energy storage (TES) material. However, low thermal conductivity leads to extended charging and discharging time and severely affects its large-scale application. In this article, three cheap nanoparticles (CuO, Al 2 O 3 , and Fe 2 O 3 ) and triethanolamine (TEA) were used as heat transfer enhancers and dispersant to improve the TES performance of erythritol. Sedimentation of nanoparticles in erythritol indicates that TEA is an effective dispersant in erythritol for three kinds of nanoparticles. The experimental results show that the thermal conductivity increased from 0.671 W/(mÁK) of erythritol to 0.722 W/(mÁK) and 0.761 W/(mÁK) of 1.5 wt% CuO and Fe 2 O 3 nano-enhanced phase change materials (NePCMs), respectively. Based on the DSC results, the melting temperature and heat of fusion of NePCMs stayed stable with nanoparticles but increased significantly after adding TEA. Furthermore, the charging/discharging cyclic behaviors of NePCMs were tested in the cycle test platform. During the cycle test, the melting time of 1.5 wt% CuO NePCM decreased from 657.9 s for pure erythritol to 615.8 s but increased to 757 s and 680.6 s for 1.5 wt% Al 2 O 3 and 1.5 wt% Fe 2 O 3 NePCMs. The solidification time decreased from 311.2 s for erythritol to 179.3 s, 198.5 s, and 132.4 s for 1.5 wt% CuO, 1.5 wt% Al 2 O 3 , and 1.5 wt% Fe 2 O 3 NePCMs. Interestingly, the supercooling degree of NePCMs we got from the test was much lower than that from the DSC curves, indicating that the supercooling is related to the sample size.These results testify that CuO and Fe 2 O 3 nanoparticles can improve the thermal conductivity of erythritol effectively.

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A review on sensible heat based packed bed solar thermal energy storage system for low temperature applications

Cited by 123 publications

References 99 publications

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Distanciamiento social ante la COVID-19: Simulación del aforo máximo de personas mediante PHP

Experimental study of metal‐oxide nanoparticles on the thermal properties of erythritol for thermal energy storage

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