Numerical investigation of packed bed storage unit filled with PCM encapsulated spherical containers – A comparison between various mathematical models

Karthikeyan, S.; Velraj, R.

doi:10.1016/j.ijthermalsci.2012.05.010

Cited by 94 publications

(21 citation statements)

References 13 publications

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“…The results revealed that the composite material containing 70 wt% PCM exhibited the most favorable thermal energy storage properties and stability. Karthikeyan and Velraj conducted a numerical investigation of a different model for the heat transfer phenomenon during the solid‐liquid phase change. The authors also conducted a comparative study of three mathematical models for the packed bed latent heat storage system.…”

Section: Introductionmentioning

confidence: 99%

Experimental measurements and numerical computation of nanofluid and microencapsulated phase change material in porous material

Saghir

Bayomy

2019

Int J Energy Res

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Summary The electronic industry is increasingly investigating different approaches for the cooling of electronic equipment. The use of bulk phase change materials is also a promising approach for energy storage. The introduction of microencapsulated phase change materials combined with nanofluids can be beneficial. The combined use of a nanofluid and a metallic porous material can be used to mitigate problems resulting from small thermal conductivity. This study investigated a ternary mixture of water with a nanofluid and a microencapsulated phase change material in a porous medium. The model was previously validated with experimental data using a 0.5%vol concentration nanofluid in water. The results revealed that heat storage capability can be achieved as long as the microencapsulated phase change materials, which consists of encapsulated eicosane, is at a concentration of 20%. Because the melting temperature of microencapsulated phase change materials is approximately 36°C, energy storage at a low flow rate and heat flux is recommended.

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Section: Introductionmentioning

confidence: 99%

Experimental measurements and numerical computation of nanofluid and microencapsulated phase change material in porous material

Saghir

Bayomy

2019

Int J Energy Res

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“…The thermal and flow behavior of capsules in an encapsulated ice energy storage system has been investigated by many researchers. [21][22][23][24][25] One of the biggest problems in ITESs is supercooling. Numerous studies have been conducted to reduce the effect of supercooling.…”

Section: Introductionmentioning

confidence: 99%

Effect of encapsulated ice thermal storage system on cooling cost for a hypermarket

Erdemir

Altuntop

2018

Int J Energy Res

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Summary Hypermarkets have high cooling load, because of high heat gains from environment and high people circulation. So the cooling cost of hypermarkets is generally so high. Cooling cost can be reduced by cold thermal energy storage systems. The aim of the present study is to determine the effect of different ice thermal storage system (ITES) utilization strategies on cooling cost for a hypermarket. Hypermarket is located in Ankara, Turkey. Daily peak cooling load of the hypermarket is 8332 kWh. To decrease to cooling cost, encapsulated ITES has been integrated to the hypermarket air conditioning system. Ice thermal storage system utilization strategies have great impact on the economic performance of the system. So, in this study, the effect of different ice storage strategies on the cooling cost was investigated. Results presented in the term of saving amount and payback period. At the end of study, it was found that the cooling cost decreased with the increasing storage capacity. Also, to increase saving amount, the stored energy should be used in electricity peak hour as much as possible. Load leveling and partial storage for peak hours strategies have shown that how the stored energy is used has as great impact as storage capacity on the economic performance of ITES, because load leveling and partial storage for peak hours strategies have performed better performance in the terms of payback period and profit amount at the end of 10 years than ordinary partial storage strategies at the same storage capacity. The highest profit at the end of 10 years is 1 450 000 USD and seen in full storage strategy. The lowest profit at the end of 10 years is 185 000 USD and seen in 10% partial storage. Also, while the shortest payback period is seen in both load leveling and 10% partial storage strategies with about 1.5 years, the longest payback period is seen in full storage strategy with about 3.1 years.

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“…Decreasing the diameter of the sphere and/or increasing the surface temperature of the encapsulated sphere increased the melting rate of the PCM. Karthikeyan and Velraj [14] compared and analysed several mathematical models on packed bed storage unit filled with PCM in a spherical capsule numerically. In the mathematical formulation, the enthalpy method is used to study the phase change behaviour of the PCM within a range of temperatures.…”

Section: Introductionmentioning

confidence: 99%

Effect of Vibration on the Melting of Phase Change Material inside a Cylindrical Enclosure

Hajiyan¹,

Al-Jethelah²,

Alomai³

et al. 2018

Proceedings of the 5th International Conference of Fluid Flow, Heat and Mass Transfer (FFHMT'18)

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The present study reports a novel numerical work on the melting of phase change material (PCM) inside a cylindrical enclosure under the application of vibration. No such work is available in the existing literature. To simulate the melting of PCM inside a vertical cylindrical enclosure, the governing equations, namely, the conservation of mass, momentum, and energy equations are solved. In addition to that enthalpy-porosity method is used to model phase change of PCM. COMSOL Multiphysics software is used to simulate the melting behaviour of a PCM during vibration conditions. The objective of the present work is to observe the melting behaviour under the application of vibration. Melting behaviour of PCM inside a vertical cylindrical enclosure has been simulated first without vibration for comparison purpose. It has been observed that vibration affects the melting behaviour significantly. This study is applicable to battery thermal management for the hybrid vehicles where PCM can be used for controlling the temperature of the battery.

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Numerical investigation of packed bed storage unit filled with PCM encapsulated spherical containers – A comparison between various mathematical models

Cited by 94 publications

References 13 publications

Experimental measurements and numerical computation of nanofluid and microencapsulated phase change material in porous material

Experimental measurements and numerical computation of nanofluid and microencapsulated phase change material in porous material

Effect of encapsulated ice thermal storage system on cooling cost for a hypermarket

Effect of Vibration on the Melting of Phase Change Material inside a Cylindrical Enclosure

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