A review of phase change material and performance enhancement method for latent heat storage system

Tao, Y.B.; He, Ya-Ling

doi:10.1016/j.rser.2018.05.028

Cited by 482 publications

(103 citation statements)

References 122 publications

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“…However, the solidification rate was found to be prolonged in such eccentric configurations, thereby extending the energy retrieval rate 37 38 by incorporating the fins (extended surfaces), 39 by the multiple PCM method, 40 and by microencapsulation/macroencapsulation 41‐44 …”

Section: Introductionmentioning

confidence: 99%

Enrichment of heat transfer in a latent heat storage unit using longitudinal fins

et al. 2020

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The charging and discharging rates of a phase change material (PCM) in a horizontal latent heat storage unit (LHSU) is largely influenced by the lower thermal conductivity of the PCM. In the present research, four different configurations of longitudinal fins are proposed to augment the heat transfer in horizontal shell and tube type LHSUs. Numerical investigations are reported to establish the thermal performance augmentation with rectangular, triangular, and Y‐shaped (bifurcated) fins. From the results, it has been inferred that all fin configurations provide a faster charging and discharging rate. In the present set of geometric dimensions of LHSU considered, a reduction in charging time of 68.71% is evaluated for case III (three rectangular fins with one fin positioned in the area of the heat transfer fluid [HTF] surface) and case V (two bifurcated fins with one fin positioned in the area of the HTF surface). Moreover, overall cycle (charging + discharging) time is reduced by 58.3% for case III. Employment of fins results in a faster rate of absorption and extraction of energy from the PCM.

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Section: Introductionmentioning

confidence: 99%

Enrichment of heat transfer in a latent heat storage unit using longitudinal fins

et al. 2020

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“…As an important category of energy storage, thermal energy storage (TES) can store and release large amount of energy . TES can be classified as sensible heat storage, latent heat storage, and thermochemical storage . Among the three thermal storage methods, latent heat storage is the most promising and attractive energy storage method due to the large latent heat storage density and ability …”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6] TES can be classified as sensible heat storage, latent heat storage, and thermochemical storage. 7,8 Among the three thermal storage methods, latent heat storage is the most promising and attractive energy storage method due to the large latent heat storage density and ability. 9,10 Phase change materials (PCMs) can absorb or release latent heat in the environment by adjusting their phase change behavior.…”

Section: Introductionmentioning

confidence: 99%

Design of diatomite-based hydrated salt composites with low supercooling degree and enhanced heat transfer for thermal energy storage

Yang

et al. 2019

Int J Energy Res

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Summary In this work, diatomite (DM) was calcined at 400°C to obtain the pure surface and pores (DM‐1); then, the three kinds of shape‐stable composite phase change materials (ss‐CPCMs) of CaCl2·6H2O (CCH)/DM‐1, CH3COONa·3H2O (SAT)/DM‐1, and Na2SO4·10H2O (SSD)/DM‐1 were prepared by impregnation method. The hydrated salts were uniformly adsorbed on the surfaces and into the pores of DM‐1 by capillary action and surface tension. The addition of nucleating agent effectively reduced the supercooling degrees of hydrated salts, and the heterogeneous nucleation mechanism was employed to explain the supercooling suppression. The results showed that the supercooling degrees of the three hydrated salt ss‐CPCMs with optimal nucleating agent were less than or equal to 0.6°C. Moreover, the thermal conductivities of ss‐CPCMs were significantly improved by adding graphite, and the addition of 10 wt% graphite could increase the thermal conductivity of hydrated salt ss‐CPCMs by at least 70%. The package capacity of CCH, SAT, and SSD in three ss‐CPCMs with appropriate contents of nucleating agent and graphite was 58.1, 56.1, and 56.3 wt%, respectively. The DSC results showed that the phase change temperatures of the three ss‐CPCMs were approximately 28.8 to 57.8°C, and the latent heat was approximately 108.7 to 149.4 J/g. The XRD and FT‐IR results exhibited that the three ss‐CPCMs indicated understanding chemical compatibility. In addition, the results of 200 melt‐solidification cycles demonstrated that the ss‐CPCMs had excellent thermal cycle reliability. Thus, the hydrated salt/DM‐1 ss‐CPCMs showed great potential as heat storage materials for various heat storage applications.

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“…A large number of studies on this topic have been published. Tao and He [2] summarized phase inside the RSS to optimize the RSS operation to reduce the volume which leads to a reduction of investment costs. To model the phase change process of a PCM, Mehling and Cabeza [17] presented analytical solutions and two numerical approaches.…”

Section: Introductionmentioning

confidence: 99%

Modeling of a Hybrid Steam Storage and Validation with an Industrial Ruths Steam Storage Line

Dusek

Hofmann

2019

Energies

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Phase change materials are used in latent heat thermal energy storages to store a high amount of energy during phase change. A hybrid storage concept was developed with the aim of utilizing this high storage capacity in combination with Ruths steam storages. In the concept, a container filled with phase change material is placed at the shell surface of the Ruths steam storage. This container can be divided into several chambers filled with different phase change materials. An arrangement of electrical heating elements or heat exchangers at the internal side of these chambers is also provided. In this paper, a model of the hybrid storage concept is developed. The model consists of different sub-models, which are connected to each other. The simulation results of a hybrid storage show how important the model is for the analysis of the concept. Furthermore, the validation of the Ruths steam storage sub-model with operational measurement data of a storage line is presented. A maximum deviation between the operational measurement data and the simulation results of 6.43% occurs in terms of pressure at the internal side of the pressure vessel. In addition, the latent heat thermal energy storage sub-model was checked with the analytic solution.

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A review of phase change material and performance enhancement method for latent heat storage system

Cited by 482 publications

References 122 publications

Enrichment of heat transfer in a latent heat storage unit using longitudinal fins

Enrichment of heat transfer in a latent heat storage unit using longitudinal fins

Design of diatomite-based hydrated salt composites with low supercooling degree and enhanced heat transfer for thermal energy storage

Modeling of a Hybrid Steam Storage and Validation with an Industrial Ruths Steam Storage Line

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