A review of performance investigation and enhancement of shell and tube thermal energy storage device containing molten salt based phase change materials for medium and high temperature applications

Li, Qi; Li, Chuan; Du, Zheng; Jiang, Feng

doi:10.1016/j.apenergy.2019.113806

Cited by 132 publications

(31 citation statements)

References 122 publications

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“…Among the thermal energy storage technologies, latent heat storage is realized through enthalpy change of a PCM during phase transition and has attracted a great deal of attention in recent years. The heat storage and release mechanism of a PCM based latent heat storage [63] can be illustrated in Fig. 6.…”

Section: Melt-impregnated and Mixing Methodsmentioning

confidence: 99%

Recent Advances in Organic/Composite Phase Change Materials for Energy Storage

Zhou¹,

Wu²,

Ma³

et al. 2020

ES Energy Environ.

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Phase change materials (PCMs) store and release energy in the phase change processes. In recent years, PCMs have gained increasing attention due to their excellent properties such as high latent heat storage capacity, appropriate solid-liquid phase change temperature, thermal reliability, and low cost. Herein, classification, characteristics, and evaluation criteria of organic/composite PCMs are systematically illustrated, and some typical preparation methods are introduced, such as in-situ polymerization, interfacial polymerization, spray drying method, porous materials adsorption method, sol-gel method, meltimpregnated and mixing method, electrospinning method, vacuum infiltration and ultrasonic method are introduced. In addition, this review presents some applications of PCMs in the utilization of solar energy, building materials, air conditioning, industrial waste heat recovery, and military camouflage and stealth. Finally, the development tendency of PCMs is discussed.

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Section: Melt-impregnated and Mixing Methodsmentioning

confidence: 99%

Recent Advances in Organic/Composite Phase Change Materials for Energy Storage

Zhou¹,

Wu²,

Ma³

et al. 2020

ES Energy Environ.

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“…Shell-and-tube dominates the global heat exchanger market due to its superior thermophysical performance, compact and robust design, easier upgradation and integration to wider practical applications [10,11]. Similarly, the inclusion of a variety of extended fins to shell-and-tube-based LHS systems were previously reported.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Coupled Thermal Enhancement through Novel Wire-Wound Fins Design and Graphene Nano-Platelets in Shell-and-Tube Latent Heat Storage System

Khan

2021

Energies

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Technological development in latent heat storage (LHS) systems is essential for energy security and energy management for both renewable and non-renewable sources. In this article, numerical analyses on a shell-and-tube-based LHS system with coupled thermal enhancement through extended fins and nano-additives are conducted to propose optimal combinations for guaranteed higher discharging rate, enthalpy capacity and thermal distribution. Transient numerical simulations of fourteen scenarios with varied combinations are investigated in three-dimensional computational models. The shell-and-tube includes paraffin as phase change material (PCM), longitudinal, radial and wire-wound fins and graphene nano-platelets (GNP) as extended fins and nano-additives, respectively. The extended fins have demonstrated better effectiveness than nano-additives. For instance, the discharging durations for paraffin with longitudinal, radial and wire-wound fins are shortened by 88.76%, 95.13% and 96.44% as compared to 39.33% for paraffin with 2.5% GNP. The combined strengths of extended fins and nano-additives have indicated further enhancement in neutralising the insulative resistance and stratification of paraffin. However, the increase in volume fraction from 1% to 3% and 5% is rather detrimental to the total enthalpy capacity. Hence, the novel designed wire-wound fins with both base paraffin and paraffin with 1% GNP are proposed as optimal candidates owing to their significantly higher heat transfer potentials. The proposed novel designed configuration can retrieve 11.15 MJ of thermal enthalpy in 1.08 h as compared to 44.5 h for paraffin in a conventional shell-and-tube without fins. In addition, the proposed novel designed LHS systems have prolonged service life with zero maintenance and flexible scalability to meet both medium and large-scale energy storage demands.

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“…For single compounds, the melting point tends to increase following the sequence of nitrates, chlorides, carbonates, and fluorides. Another way to categorize PCMs is by examining their latent heat and consequent storage density capacity, as reported in Table 2 [16]. PCMs are available in a broad temperature range.…”

Section: Introductionmentioning

confidence: 99%

“…For single compounds, the melting point tends to increase following the sequence of nitrates, chlorides, carbonates, and fluorides. Another way to categorize PCMs is by examining their latent heat and consequent storage density capacity, as reported in Table 2 [16]. Organic compounds consist of paraffin waxes, esters, acids, and alcohols; inorganic materials include salt hydrates, eutectics of inorganic salts, metals, and their eutectics.…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Chloride-Carbonate Phase Change Material: Thermal Performances and Modelling of a Packed Bed Storage System for Concentrating Solar Power Plants

Tripi

Tizzoni

et al. 2021

Energies

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Molten salts eutectics are promising candidates as phase change materials (PCMs) for thermal storage applications, especially considering the possibility to store and release heat at high temperatures. Although many compounds have been proposed for this purpose in the scientific literature, very few data are available regarding actual applications. In particular, there is a lack of information concerning thermal storage at temperatures around 600 °C, necessary for the coupling with a highly efficient Rankine cycle powered by concentrated solar power (CSP) plants. In this contest, the present work deals with a thermophysical behavior investigation of a storage heat exchanger containing a cost-effective and safe ternary eutectic, consisting of sodium chloride, potassium chloride, and sodium carbonate. This material was preliminarily and properly selected and characterized to comply with the necessary melting temperature and latent enthalpy. Then, an indirect heat exchanger was considered for the simulation, assuming aluminum capsules to confine the PCM, thus obtaining the maximum possible heat exchange surface and air at 5 bar as heat transfer fluid (HTF). The modelling was carried out setting the inlet and outlet air temperatures at, respectively, 290 °C and 550 °C, obtaining a realistic storage efficiency of around 0.6. Finally, a conservative investment cost was estimated for the storage system, demonstrating a real possible economic benefit in using these types of materials and heat exchange geometries, with the results varying, according to possible manufacturing prices, in a range from 25 to 40 EUR/kWh.

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A review of performance investigation and enhancement of shell and tube thermal energy storage device containing molten salt based phase change materials for medium and high temperature applications

Cited by 132 publications

References 122 publications

Recent Advances in Organic/Composite Phase Change Materials for Energy Storage

Recent Advances in Organic/Composite Phase Change Materials for Energy Storage

Performance Evaluation of Coupled Thermal Enhancement through Novel Wire-Wound Fins Design and Graphene Nano-Platelets in Shell-and-Tube Latent Heat Storage System

High-Temperature Chloride-Carbonate Phase Change Material: Thermal Performances and Modelling of a Packed Bed Storage System for Concentrating Solar Power Plants

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