Macroencapsulation and characterization of phase change materials for latent heat thermal energy storage systems

Alam, Tanvir E.; Dhau, Jaspreet S.; Goswami, D. Yogi; Stefanakos, Elias K.

doi:10.1016/j.apenergy.2015.04.086

Cited by 179 publications

(37 citation statements)

References 39 publications

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“…Based on size, EPCMs can be classified as nano (below 1000 nm), micro (from 1000 nm to 1000 µm) and macro (above 1000 µm) [30]. According to Alam et al [2] between micro and macro EPCMs, micro EPCMs provide faster charging and discharging rates because of the smaller distance for heat transfer.…”

Section: Introductionmentioning

confidence: 99%

“…In the case of concentrated solar power (CSP) plants, the intermittency problem is addressed with the use of thermal energy storage (TES) systems [1][2][3][4]. Thanks to TES the CSP plant can produce energy when no sunlight is available, then this component contributes to produce an almost continuous supply of electricity and, as consequence, increase its capacity factor.…”

Section: Introductionmentioning

confidence: 99%

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Encapsulated Nitrates Phase Change Material Selection for Use as Thermal Storage and Heat Transfer Materials at High Temperature in Concentrated Solar Power Plants

et al. 2017

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Abstract:In the present paper, the finite element method is used to perform an exhaustive analysis of the thermal behavior of encapsulated phase change materials (EPCMs), which includes an assessment of several materials in order to identify the best combination of PCM and shell material in terms of thermal energy storage, heat transfer rate, cost of materials, limit of pressure that they can support and other criteria. It is possible to enhance the heat transfer rate without a considerable decrease of the thermal energy storage density, by increasing the thickness of the shell. In the first examination of thermomechanical coupling effects, the technical feasibility can be determined if the EPCM dimensions are designed considering the thermal expansion and the tensile strength limit of the materials. Moreover, when a proper EPCM shell material and PCM composition is used, and compared with the current storage methods of concentrated solar power (CSP) plants, the use of EPCM allows one to enhance significantly the thermal storage, reaching more than 1.25 GJ/m 3 of energy density.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Encapsulated Nitrates Phase Change Material Selection for Use as Thermal Storage and Heat Transfer Materials at High Temperature in Concentrated Solar Power Plants

et al. 2017

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“…As the PCM volume changes during the phase change process, the elastic deformation takes place in the shell material [19]. (5) The capsules are filled with rhombic packing, as a result, the contact between the capsules is point-to-point; consequently the heat transfer between the capsules is negligible.…”

Section: Modelling Of Latent Thermal Energy Storage Systemmentioning

confidence: 99%

Numerical analysis of latent heat storage system with encapsulated phase change material in spherical capsules

Bellan

Cordiviola

Barberis

et al. 2017

Renew. Energy Environ. Sustain.

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Abstract. Solar energy has been considered as one of the promising solutions to replace the fossil fuels. To generate electricity beyond normal daylight hours, thermal energy storage systems (TES) play a vital role in concentrated solar power (CSP) plants. Thus, a significant focus has been given on the improvement of TES systems from the past few decades. In this study, a numerical model is developed to obtain the detailed heat transfer characteristics of lab-scale latent thermal energy storage system, which consists of molten salt encapsulated spherical capsules and air. The melting process and the corresponding temperature and velocity distributions in every capsule of the system are predicted. The enthalpy-porosity approach is used to model the phase change region. The model is validated with the reported experimental results. Influence of initial condition on the thermal performance of the TES system is predicted.

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“…Fukahori et al [18] designed and built capsule with very good corrosive resistance and cycling performance for metallic PCMs. Alam et al [19] presents technique to encapsulate PCMs with melting point in the range of 120-350°C.…”

Section: Wallsmentioning

confidence: 99%

The role of phase change materials for the sustainable energy

2016

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Abstract. Unceasing global economic development leads to continuous increase of energy demand. Considering the limited conventional resources of energy as well as impact on the environment associated with its use, it is important to focus on the rational management of energy resources and on supporting the development of new technologies related to both conventional and renewable energy resources. In a number of cases the use of phase change materials (PCMs) turns out to be a reasonable solution. This paper contains a summary of well-studied and known, previously used solutions based on phase change materials as well as novel possibilities, which are under development. It has been decided to investigate this topic due to the wide range of highly effective solutions. The review is focused on selected applications of PCMs for technologies which are designed to improve energy efficiency and on PCMs used in technologies based on renewable energy sources.

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Macroencapsulation and characterization of phase change materials for latent heat thermal energy storage systems

Cited by 179 publications

References 39 publications

Encapsulated Nitrates Phase Change Material Selection for Use as Thermal Storage and Heat Transfer Materials at High Temperature in Concentrated Solar Power Plants

Encapsulated Nitrates Phase Change Material Selection for Use as Thermal Storage and Heat Transfer Materials at High Temperature in Concentrated Solar Power Plants

Numerical analysis of latent heat storage system with encapsulated phase change material in spherical capsules

The role of phase change materials for the sustainable energy

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