A comprehensive review analysis on advances of evacuated tube solar collector using nanofluids and PCM

Kumar, Amit; Tiwari, Arun Kumar; Said, Zafar

doi:10.1016/j.seta.2021.101417

Cited by 50 publications

(18 citation statements)

References 147 publications

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“…A TES system with PCM can store 5-14 times more energy than a system using suitable storage materials of the same volume [6]. The usage of PCMs has received widespread interest, with clear evidence demonstrating the important roles they have in the storage and recovery of solar energy [7,8], energy savings in buildings [9][10][11], and electronics cooling [12,13].…”

Section: Introductionmentioning

confidence: 99%

Simulation Study of Solidification in the Shell-And-Tube Energy Storage System with a Novel Dual-PCM Configuration

Mozafari

Lee

2022

Energies

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This study proposes a novel dual-PCM configuration with outstanding solidification response in a horizontal shell-and-tube energy storage system. To demonstrate that the proposed PCM configuration is superior in its thermal responses, results from a range of numerical simulations are presented and compared between different configurations of dual-PCM. As the melting/solidus point is a crucial factor for the solidification rate, dual PCMs are chosen such that the average of their melting point is equal to the melting point of the single-PCM in the reference case. Additionally, equal-area sectors are considered for all cases to ensure the same quantities of PCMs are compared. The temporal liquid fraction and temperature contours reveal that solidification is delayed in the upper half of the system due to strong natural convection motions. Therefore, a dual-PCM configuration is offered to improve the solidification rate in this region and accelerate the full solidification process. Results show that placing a PCM with a lower solidus point in the lower half or an annulus-shaped zone around the cold tube can save the full recovery time up to 8.51% and 9.36%, respectively. The integration of these two strategies results in a novel and optimum design that saves the solidification time up to 15.09%.

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Section: Introductionmentioning

confidence: 99%

Simulation Study of Solidification in the Shell-And-Tube Energy Storage System with a Novel Dual-PCM Configuration

Mozafari

Lee

2022

Energies

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“…To address rising energy demand, researchers have focused on the need to develop clean and renewable energy sources and associated technologies [ 3 , 4 , 5 ]. In recent years, solutions such as the use of better fluids and energy storage devices have been investigated [ 6 , 7 , 8 , 9 ]. Thermal energy storage (TES) is a critical subsystem in solar energy applications.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Investigation of a Melting Rate Enhancement inside a Thermal Energy Storage System of Finned Heat Pipe with Nano-Enhanced Phase Change Material

et al. 2022

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Thermal energy storage via the use of latent heat and phase transition materials is a popular technology in energy storage systems. It is vital to research different thermal enhancement techniques to further improve phase transition materials’ weak thermal conductivity in these systems. This work addresses the creation of a basic shell and a tube thermal storage device with wavy outer walls. Then, two key methods for thermal augmentation are discussed: fins and the use of a nano-enhanced phase change material (NePCM). Using the enthalpy–porosity methodology, a numerical model is developed to highlight the viability of designing such a model utilizing reduced assumptions, both for engineering considerations and real-time predictive control methods. Different concentrations of copper nanoparticles (0, 2, and 4 vol%) and wavenumbers (4,6 and 8) are investigated in order to obtain the best heat transmission and acceleration of the melting process. The time required to reach total melting in the studied TES system is reduced by 14% and 31% in the examined TES system, respectively, when NePCM (4 vol% nanoparticles) and N = 8 are used instead of pure PCM and N = 4. The finding from this investigation could be used to design a shell-and-tube base thermal energy storage unit.

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“…These two revolutionary technologies were integrated into the domain due to their importance and influence on all energy devices. The thermal nature of different materials PCM and, in the case of nano-fluids, their concentrations, govern on the rate of improvement [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Small iron pieces effect on the output of single slope solar still

Khechekhouche

Bellila

Sadoun

et al. 2022

Heritage and Sustainable Development

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Solar distillation is an environmental technique that uses solar energy to treat polluted water. In this context, two solar stills of the same size (0.5 x 0.5 m) were exposed to the sun i.e., under the same weather conditions to see the effect of small iron parts on the production of pure water. The results showed that the modified solar still SSM which contained iron pieces had an improvement rate of 23.46% compared to the reference solar still SSR.

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A comprehensive review analysis on advances of evacuated tube solar collector using nanofluids and PCM

Cited by 50 publications

References 147 publications

Simulation Study of Solidification in the Shell-And-Tube Energy Storage System with a Novel Dual-PCM Configuration

Simulation Study of Solidification in the Shell-And-Tube Energy Storage System with a Novel Dual-PCM Configuration

A Numerical Investigation of a Melting Rate Enhancement inside a Thermal Energy Storage System of Finned Heat Pipe with Nano-Enhanced Phase Change Material

Small iron pieces effect on the output of single slope solar still

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