Melting and Solidification Behaviour of Some Organic Phase Change Materials Applicable to Low Temperature Heat Storage Applications

Maheswararao, G Uma; Krishna, D. Jaya; John, Bibin

doi:10.1007/s10765-022-03042-9

Cited by 6 publications

(2 citation statements)

References 48 publications

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“…Lauric acid is considered as the PCM due to its suitability for heat storage applications. 34 The thermophysical properties of lauric acid 36 and NP-enhanced lauric acid are listed in Table 1.…”

Section: Problem Description and Modelingmentioning

confidence: 99%

Influence of fin configuration on the thermal performance of nanoparticle-enhanced latent heat storage system

Amudhalapalli

Devanuri

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Storing the thermal energy using the materials' latent heat capacity is a prominent and well-established technique; these materials are termed phase-change materials (PCMs). For low-temperature applications mostly organic PCMs are available. These PCMs possess very less thermal conductivity, which results in a low rate of heat transfer. To overcome this problem usage of fins and the addition of nanoparticles (NPs) to PCM are two potential methods. In the present study, three-dimensional numerical analysis of melting and solidification is performed on the radial, spiral, and longitudinal finned PCM-based shell and tube heat exchangers with the addition of NPs to PCM. Numerical analysis is carried out with various volume fractions of NPs in the PCM. Based on the study it is observed that the PCM-based heat exchanger with radial fins has the lowest melting time, average temperature, and energy storage ratio. For longitudinal fins melting time is maximum and it also has the maximum average temperature and energy storage ratio. It is observed that the addition of NPs showed a significant effect on the phase change process. For all the selected geometries the average exergy efficiency is not more than 4.4% during solidification.

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Section: Problem Description and Modelingmentioning

confidence: 99%

Influence of fin configuration on the thermal performance of nanoparticle-enhanced latent heat storage system

Amudhalapalli

Devanuri

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…2,3 PCMs can be extensively used in thermal energy storage (TES) systems, but their utilization is bounded due to their low thermal conductivity. 4 This results in large melting and solidification time, which further results in a decrease in TES effectiveness. To increase the heat transfer rate, usage of techniques like increase in surface area, [5][6][7][8][9][10] the inclusion of nanoparticles, [11][12][13] encapsulation, 14,15 metal foam, 16,17 cascading, 1 placing HTF tube in eccentric position 18 and hybrid techniques 19,20 were suggested in the literature.…”

Section: Introductionmentioning

confidence: 99%

Effect of fin configuration and orientation of latent heat storage system on the melting and solidification performance

Amudhalapalli

Devanuri

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Phase change materials (PCMs) are used to store thermal energy. They possess high specific energy at nearly constant temperatures. The usage of the PCMs is limited due to their very low thermal conductivity, which results in poor heat transfer. To overcome this problem usage of fins is a potential technique. In the current analysis, the surface area of the heat transfer fluid (HTF) tube is increased by radial (R-type), spiral (S-type), and longitudinal (L-type) fins. A 3D numerical analysis of melting and solidification is carried out on R-type, S-type, and L-type shell and tube (S&T) PCM heat exchanger (HX) by considering the inclination effects. Lauric acid is used as PCM. Phase change time, energy ratio, and exergy efficiency are considered to analyze the performance of HXs. MOORA analysis is carried out to select the best HX. It is observed that R-type HX at the vertical position has shown better performance among the selected HXs. Among the considered geometries, the maximum average exergy efficiency is obtained for 45° inclination with R-type HX and minimum for horizontally positioned L-type HX during both melting and solidification. The charging time of the vertically positioned HX, when compared to 45o oriented HX with R type, S type, and L type HX is observed to decrease by 47.5%, 45.7%, and 23%, respectively.

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Overview of Encapsulated Phase Change Materials for Thermal Runaway Control

Minea

2023

Int J Thermophys

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Melting and Solidification Behaviour of Some Organic Phase Change Materials Applicable to Low Temperature Heat Storage Applications

Cited by 6 publications

References 48 publications

Influence of fin configuration on the thermal performance of nanoparticle-enhanced latent heat storage system

Influence of fin configuration on the thermal performance of nanoparticle-enhanced latent heat storage system

Effect of fin configuration and orientation of latent heat storage system on the melting and solidification performance

Overview of Encapsulated Phase Change Materials for Thermal Runaway Control

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