Experimental and numerical investigation of a phase change material: Thermal-energy storage and release

Joulin, Annabelle; Younsi, Zohir; Zalewski, Laurent; Lassue, Stéphane; Rousse, Daniel R.; Cavrot, J.P.

doi:10.1016/j.apenergy.2011.01.036

Cited by 139 publications

(37 citation statements)

References 31 publications

(25 reference statements)

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“…Their results showed that fins are better than pins. Joulina et al [5] studied comparison of numerical and experimental results for a PCM conditioned in a parallelepipedic polyolefin envelope to be used in passive solar walls. They used two methods for numerical model; custom one-dimensional Fortran code and two-dimensional use of a Fluent.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the effect of eccentricity and operational parameters in PCM-filled single-pass shell and tube heat exchangers

et al. 2016

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a b s t r a c tIn the present study, melting behavior of RT50 as a phase change material in a shell and tube heat exchanger is considered. Therefore the effects of parameters including a geometrical property (eccentricity) and flow specifications (mass flow rate and inlet temperature of heat transfer fluid) on different decisive parameters of the PCM are investigated. The selected parameters which are critical for every storage systems are liquid fraction, melting time and thermal storage performance. Enthalpy porosity method is used for the modeling of phase change process and pure conduction and natural convection are considered in the simulation. The differential governing equations are solve using SIMPLE algorithm in which momentum and energy equation are discretized employing QUICK differentiating scheme. The grid size and the time step were chosen after careful examination of the independency of the results to these parameters. The details of the process progression are presented via temperature contours and streamlines. The study declares that the initial stages as well as ending portion of melting process are dominated by weak mechanism of conduction. Results show that the average temperature of the PCM isn't a function of eccentricity as long as there is solid PCM above the inner tube. Generally by increasing the eccentricity the rate of heat transfer and average temperature at the last stages of melting process increases. The Results indicated that although increasing eccentricity and inlet temperature of the heat transfer fluid influences the rate of heat transfer in the heat exchanger especially when both variations are considered simultaneously, mass flow rate does not leave such a significant impression on the rate even in eccentric cases.

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Section: Introductionmentioning

confidence: 99%

Analysis of the effect of eccentricity and operational parameters in PCM-filled single-pass shell and tube heat exchangers

et al. 2016

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“…Thermal conductivity is a key thermal-transport phenomenon in materials and a major thermophysical property requirement in thermal energy storage Joulin et al (2011). Phase change materials (PCM) such as organics, inorganics and eutectics are mostly used in thermal energy storage (TES) applications.…”

Section: Introductionmentioning

confidence: 99%

Nanoadditives induced enhancement of the thermal properties of paraffin-based nanocomposites for thermal energy storage

2016

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“…Actually, supercooling depends on concentration of the nucleation sites, the cooling rate and the cooling history. Theoretical prediction of these parameters is rather imprecise and therefore some researchers claim that the supercooling phenomena of phase change material is numerically unpredictable [18].…”

Section: Problem Statement and Boundary Conditionsmentioning

confidence: 99%

Solidification of nano-enhanced phase change material (NEPCM) in a wavy cavity

et al. 2012

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The effects of surface waviness (k = 0, 0.125, 0.25, 0.5) and nanoparticle dispersion (/ = 0, 0.05, 0.1) on solidification of Cu-water nanofluid inside a vertical enclosure are investigated numerically for different Grashof number (Gr = 10 5 , 10 6 , 10 7 ). An enthalpy porosity technique is used to trace the solid and liquid interface. Comparisons with previously published works show the accuracy of the obtained results. A maximum of 25.9% relative variation of freezing time with surface waviness was observed for k = 0.5, while the relative variation of freezing time with nanoparticles in comparison with surface waviness was negative for high values of k. It was observed that surface waviness can be used to control the solidification time based on enhancing different mechanism of solidification.

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Experimental and numerical investigation of a phase change material: Thermal-energy storage and release

Cited by 139 publications

References 31 publications

Analysis of the effect of eccentricity and operational parameters in PCM-filled single-pass shell and tube heat exchangers

Analysis of the effect of eccentricity and operational parameters in PCM-filled single-pass shell and tube heat exchangers

Nanoadditives induced enhancement of the thermal properties of paraffin-based nanocomposites for thermal energy storage

Solidification of nano-enhanced phase change material (NEPCM) in a wavy cavity

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