Heat transfer enhancement using spiral fins in different orientations of Latent Heat Storage Unit

Mehta, Digant S.; Vaghela, Bhavesh; Rathod, Manish K.; Banerjee, Jyotirmay

doi:10.1016/j.ijthermalsci.2021.107060

Cited by 32 publications

(4 citation statements)

References 68 publications

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“…Helical fins represent a distinctive variation of annular fins, capable of enhancing the convection of liquid-phase PCM and augmenting the nominal thermal conductivity of the material. Mehta et al , conducted an analysis to examine the impact of helical fins on the heat transfer rate of energy storage devices. Figure illustrates the helical structure under consideration.…”

Section: Internal Structure To Enhance Heat Exchangementioning

confidence: 99%

Progress in the Study of Enhanced Heat Exchange in Phase Change Heat Storage Devices

et al. 2023

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In comparison with sensible heat storage devices, phase change thermal storage devices have advantages such as high heat storage density, low heat dissipation loss, and good cyclic performance, which have great potential for solving the problem of temporal and spatial imbalances in the transfer and utilization of heat energy. However, there are also issues such as the small thermal conductivity of phase change materials (PCMs) and poor efficiency in heat storage and release, and in recent years, enhanced heat transfer in phase change thermal storage devices has become one of the research hotspots for optimizing thermal storage devices. Although there have been reviews of enhanced heat transfer technology for phase change thermal storage devices in the literature, there is still insufficient research on the summarization of the enhanced heat transfer mechanism, structural optimization, and applications of phase change thermal storage devices. This Review provides a review of enhanced heat transfer in phase change thermal storage devices from two aspects: internal structure enhanced heat transfer and heat exchange medium flow channel enhanced heat transfer. It summarizes the enhanced heat transfer measures of various types of phase change thermal storage devices and discusses the role of structural parameters in enhanced heat transfer. It is hoped that this Review will provide some references for scholars engaged in research on phase change thermal storage heat exchangers.

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Section: Internal Structure To Enhance Heat Exchangementioning

confidence: 99%

Progress in the Study of Enhanced Heat Exchange in Phase Change Heat Storage Devices

et al. 2023

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“…Reference [9][10][11] is recommended for further studies on heat pipes and [12] extensively reviewed heat transfer enhancement methods for LHTES in solar heating systems. Reference [13][14][15][16][17] exhaustively studied and reported the importance of fins as an effective heat transfer enhancer in TES systems.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of a Solar Sunrise Transient Temperature Model for Latent Heat Thermal Energy Storage System

Ikeleji,

Bello-Ochende

2023

Preprint

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This study investigates numerically the sunrise and sunset transient temperature model that is developed for modeling sunlight's temperature in designing latent heat thermal energy storage system (LHTESS), to close carbon cycles. It was used as a model for the threedimensional conjugate phase change material (PCM) melting procedure in the thermal storage of a 500K-rated concentrated solar power (CSP) plant using computational fluid dynamics (CFD) code. Air is the heat transfer fluid (HTF). Two transient solar temperature models and an isothermal model were studied and compared. The reduction in the expected storage time and increased energy storage greatly improved the system's efficiency. The numerical model results were substantiated by experimental evidence from the open literature.

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“…As a result of being cost-effective, efficient, and simple, another strategy, inserting fins, has been proposed and adopted extensively [22][23][24]. A review on this strategy is as follows.…”

Section: Introductionmentioning

confidence: 99%

“…It demonstrated that the use of perforate fins enhanced the melting rate, reducing the melting time by about 7%. The thermal performance of shell and tube LTES units with spiral fins was tested by Mehta et al [23] which found that using spiral fins reduced the melting time significantly, by approximately 51.61% in maximum.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Melting Process in a Rectangular Enclosure with Different Fin Locations

Huang

Tian

et al. 2021

Energies

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Latent thermal energy storage is regarded as an effective strategy to utilize solar energy and recover automotive waste heat. Based upon an enthalpy-porosity method, the influence characteristics and mechanism of fin location on phase change material melting behavior in vertical rectangular enclosures were explored numerically. The results show that as fin location increases, the melting time decreases before attaining the minimum at the fin location of 0.20 after which it increases and finally surpasses the no fin case, because (1) the influence range of fins for conduction is limited by the bottom surface when putting fins next to this surface, (2) the liquid flow resistance increases with moving fins up, and (3) mounting fins near the top surface accelerates melting at the upper part, facilitating thermal stratification formation and weakening natural convection. Nu is higher than the no fin case, i.e., Nu enhancement factor is a positive value, in the melting process for a lower fin location, while for other fin locations, a transition to a negative value takes place. The higher the fin location is, the earlier the transition that arises. Finally, a strategy of increasing the maximum liquid flow velocity is proposed to reinforce melting for cases with considerable natural convection.

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Heat transfer enhancement using spiral fins in different orientations of Latent Heat Storage Unit

Cited by 32 publications

References 68 publications

Progress in the Study of Enhanced Heat Exchange in Phase Change Heat Storage Devices

Progress in the Study of Enhanced Heat Exchange in Phase Change Heat Storage Devices

Numerical Investigation of a Solar Sunrise Transient Temperature Model for Latent Heat Thermal Energy Storage System

Numerical Analysis of Melting Process in a Rectangular Enclosure with Different Fin Locations

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