Experimental investigation on the thermal management performance of heat sink using low melting point alloy as phase change material

Liang Zhao, Yuming Xing and Xin Liu

Renewable Energy, 2020, vol. 146, issue C, 1578-1587

Abstract: This paper presents a low melting point Bi–Pb–Sn–Cd alloy as the phase change material (PCM) for a thermal management system. Compared with an organic PCM (stearic acid (SA)), which has a similar melting point of ∼69 °C, the thermophysical properties of the two PCMs were characterized, which revealed that the low melting point alloy (LMPA) had much larger thermal conductivity (∼125.22 W/mK) and volumetric latent heat (∼365.5 MJ/m3). The analysis results of a 270-day compatibility experiment using scanning electron microscopy (SEM) and the energy dispersive spectrum (EDS) showed that the LMPA had good compatibility with the aluminium alloy and copper. With the same dimensions, the LMPA-based heat sink outperforms the SA and copper foam/SA composite based heat sinks at various power input levels, which could effectively reduce the temperature of the heater and extend the effective managed time at least 1.5 times. The LMPA-based heat sink could also discharge heat more efficiently, which is preferred for cyclic operation.

Keywords: Phase change material; Thermal management; Heat sink; Low melting point alloy; Stearic acid; Copper foam (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:146:y:2020:i:c:p:1578-1587

DOI: 10.1016/j.renene.2019.07.115

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