Experimental investigation of the effect of inclination angle on convection-driven melting of phase change material in a rectangular enclosure

Kamkari, Babak; Shokouhmand, Hossein; Bruno, Frank

doi:10.1016/j.ijheatmasstransfer.2014.01.014

Cited by 302 publications

(79 citation statements)

References 59 publications

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“…5(b) and (c)), some temperature fluctuations are observed in temperature histories of the thermocouples placed above the fins. Similar temperature fluctuations were detected by Kamkari et al [46] during melting of the PCM from below. Temperature fluctuations imply the presence of chaotic and vortical flow structures in the liquid PCM above the fin.…”

Section: Temperature Historysupporting

confidence: 87%

Experimental investigation of phase change material melting in rectangular enclosures with horizontal partial fins

Kamkari

Shokouhmand

2014

International Journal of Heat and Mass Transfer

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307

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Section: Temperature Historysupporting

confidence: 87%

Experimental investigation of phase change material melting in rectangular enclosures with horizontal partial fins

Kamkari

Shokouhmand

2014

International Journal of Heat and Mass Transfer

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307

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“…The experiment with the heat flux introduced at the bottom of the container is under preparation. As reported by Kamkari et al [2] the heat flux introduced at the bottom of the enclosure should result in the largest melt fractions at the given time intervals. …”

Section: Melt Fractionssupporting

confidence: 54%

“…Kamkari et al [2] reported experimental investigation of the effect of inclination angle on convection-driven melting of phase change material in a rectangular enclosure. Lauric acid was used as a PCM in the experiments.…”

Section: Introductionmentioning

confidence: 99%

Visual monitoring of the melting front propagation in a paraffin-based PCM

et al. 2017

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Abstract. Experiments were carried out in an environmental chamber with the aim to monitor the melting front propagation in a rectangular cavity filled with a paraffin-based Phase Change Material (PCM). The PCM was contained in transparent containers with the heat flux introduced by means of an electric heating element. The stabilized power source was used to maintain the constant heat output of the heating elements. The experiments were performed for the heat flux introduced at the side wall of the container and at the upper surface of the PCM. The paraffin-based PCM RT28HC with the phase change temperature of 28 °C was used in the experiments. The temperature in the environmental chamber was maintained at the melting temperature of the PCM. The propagation of the melting front was monitored with a digital camera and temperatures at several locations were monitored with RTDs and thermocouples. Significant natural convection was observed for the heat flux introduced at the side wall of the container. As a result the melting front propagated much faster at the top of the container than at its bottom. The heat flux introduced at the upper-surface of the PCM resulted in almost one-dimensional propagation of the melting front. The acquired data are to be used for validation of an in-house developed numerical model based on the fronttracking method.

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“…Number of techniques have been developed in order to increase the thermal performance of PCMs which include the use of high conducting materials, the extended heat transfer surface [6], the use of intermediate heat transfer medium, the heat pipes, the multiple PCMs [7], the micro-encapsulation [8] and so on. One of the two major heat transfer enhancement techniques in PCM are providing partial fins [9] and giving inclination to the enclosure [10]. It has been established by previous studies that these two techniques enhance the thermal performance of PCMs.…”

Section: Introductionmentioning

confidence: 99%

Study of Combined Effect of Inclination and Partial Fins on Melting of Phase Change Material in A Rectangular Enclosure Using CFD

Rao¹,

Kolla²,

Sasanka³

et al. 2018

J. Mod. Sim. Mater.

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This study presents the combined effect of inclination and internal fins on the melting rate of PCM in a rectangular enclosure (8.89cm×6.35cm). The rectangular enclosure has a hot wall with a temperature of 311K, a cold wall with a temperature of 301.3K and the other two walls are insulated. Gallium with very low Prandtl number is taken as the PCM in this study. First, the individual effects of different inclinations (0⁰, 45⁰ and 90⁰) of the enclosure on melting rate of PCM are studied followed by the study of the effect of internal fins. Then we provide a combined environment of inclination and partial fins and obtain the results of liquid fraction, velocity contours and temperature distributions. Plots for the liquid fraction and average temperatures with respect to time are also obtained. Finally, the results and plots of the combined effect are compared with those of other conditions. From the comparison, we conclude that the combined effect of inclination and partial fins under constant normal gravity condition greatly enhances the heat transfer in PCM.

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Experimental investigation of the effect of inclination angle on convection-driven melting of phase change material in a rectangular enclosure

Cited by 302 publications

References 59 publications

Experimental investigation of phase change material melting in rectangular enclosures with horizontal partial fins

Experimental investigation of phase change material melting in rectangular enclosures with horizontal partial fins

Visual monitoring of the melting front propagation in a paraffin-based PCM

Study of Combined Effect of Inclination and Partial Fins on Melting of Phase Change Material in A Rectangular Enclosure Using CFD

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