A novel phase change material-based heat sink with an orthotropic plate to enhance the temperature field uniformity for avionics

Abstract In the present study, the numerical investigation has been performed for a phase change material (PCM)-based longitudinal fin heat sink. The fins are taken as an integral part of the heat sink and are made up of aluminum. The PCM considered in the study is RT44HC. Heat is transferred to the heat sink through its horizontal base. In order to simulate the melting behavior of the PCM, volume of fluid model has been used. To attain the best configuration with optimum operational time, Taguchi method has been used followed by analysis of melt fraction and maximum base temperature. The optimized heat sink configuration with maximum operational time has been obtained at the critical temperatures of 54.8 °C, 63 °C, and 72.6 °C.

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Effect of the inclination angle on the transient performance of a phase change material-based heat sink under pulsed heat loads

Journal of Zhejiang University SCIENCE A ◽

10.1631/jzus.a1400103 ◽

2014 ◽

Vol 15 (10) ◽

pp. 789-797 ◽

Cited By ~ 12

Author(s):

Jiang Lu ◽

Li-wu Fan ◽

Yi Zeng ◽

Yu-qi Xiao ◽

Xu Xu ◽

...

Keyword(s):

Phase Change ◽

Phase Change Material ◽

Inclination Angle ◽

Heat Sink ◽

Transient Performance ◽

Change Material ◽

Heat Loads

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Study of heat sink effects during melting of constrained phase change material inside a spherical enclosure

Journal of Energy Storage ◽

10.1016/j.est.2019.101151 ◽

2020 ◽

Vol 27 ◽

pp. 101151

Author(s):

Mohammed Bechiri ◽

Kacem Mansouri ◽

Salman Saleem

Keyword(s):

Phase Change ◽

Phase Change Material ◽

Heat Sink ◽

Change Material

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Transient Performance of a Finned PCM Heat Sink

Advances in Electronic Packaging, Parts A, B, and C ◽

10.1115/ipack2005-73113 ◽

2005 ◽

Author(s):

V. Shatikian ◽

G. Ziskind ◽

R. Letan

Keyword(s):

Phase Change ◽

Melting Temperature ◽

Phase Change Material ◽

Heat Sink ◽

Geometrical Parameters ◽

Transient Performance ◽

The Mean ◽

Liquid States ◽

Fin Thickness ◽

Change Material

The present study explores numerically the transient performance of a heat sink based on a phase change material (PCM), during the process of melting. Heat is transferred to the sink through its horizontal base, to which vertical fins made of aluminum are attached. The phase change material is stored between the fins. Its properties, including the melting temperature, latent and sensible specific heat, thermal conductivity and density in solid and liquid states, are based on a commercially available paraffin wax. A parametric investigation is performed for melting in a relatively small system, 10mm high, where the fin thickness is 1.2mm, and the distance between the fins varies from 2mm to 8mm. The temperature of the base varies from 12°C to 24°C above the mean melting temperature of the PCM. Transient numerical simulations are performed, yielding temperature evolution in the fins and the PCM. The computational results show how the transient phase-change process, expressed in terms of the volume melt fraction of the PCM, depends on the thermal and geometrical parameters of the system, which relate to the temperature difference between the base and the mean melting temperature, and to the thickness of the PCM layer. This paper was also originally published as part of the Proceedings of the ASME 2005 Heat Transfer Summer Conference.

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