Experimental and numerical investigation of the melting process and heat transfer characteristics of multiple phase change materials

2020 ◽  
Vol 44 (14) ◽  
pp. 11219-11232
Author(s):  
Wei Li ◽  
Jun Wang ◽  
Xu Zhang ◽  
Xueling Liu ◽  
Hongbiao Dong
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Numerical Investigation ◽  
Phase Change Materials ◽  
Melting Process ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Multiple Phase

Numerical Study of Heat Transfer Characteristics of Liquid Flow in a Microtube With Blend of Micro Phase Change Materials

2012 ◽  
Author(s):  
Yasmin Khakpour ◽  
Jamal Seyed Yagoobi
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Liquid Flow ◽  
Phase Change Materials ◽  
Numerical Study ◽  
Finite Thickness ◽  
Local Heat Transfer ◽  
Outer Wall ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics

This numerical investigation explores the heat transfer characteristics of liquid flow with two-component (blend) micro phase change materials (MPCM) and compares them with those of a single component MPCM slurry. The numerical domain is comprised of an axisymmetric micro-tube in contact with a finite-thickness solid zone and a constant heat flux applied on the solid outer wall. The ultimate objective is to demonstrate the tunability of PCM fluid’s thermal energy properties when the phase transition temperatures of the PCMs are chosen within a range required for a specific application. This is because different pure PCM materials store latent heat at a specific range of temperatures. The MPCM slurry flow does not reach a fully developed condition as long as the MPCM particles experience phase change in the developing region. The local heat transfer coefficient strongly depends on the corresponding location of the melting zone interface.

Numerical Investigation on Melting Process of a Phase Change Material Under Supergravity

2020 ◽  
Vol 13 (2) ◽  
Author(s):  
Yu Xu ◽  
Zihang Zhu ◽  
Shugaowa Li ◽  
Jiale Wang
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Numerical Investigation ◽  
Phase Change Material ◽  
Melting Process ◽  
Heat Transfer Characteristics ◽  
Melting Heat ◽  
Earth Gravity ◽  
The Earth ◽  
Change Material

Abstract A numerical investigation on the melting process of paraffin wax RT44 under supergravity (5–20 g) was conducted to evaluate the effect of supergravity on the melting heat transfer characteristics. The simulations were conducted in a horizontally placed container with a constant heat flux of 5–50 kW/m2 maintained on the bottom wall under both supergravity and the earth gravity (1 g). The numerical data under supergravity are compared with those under the Earth gravity for all circumstances. The results indicate that the melting heat transfer characteristics of the phase change material (PCM) are affected by supergravity significantly (around 30%) within 20 g. With the increase of supergravity, the heating wall temperature decreases, and the liquid fraction as well as the melting rate increases. Meanwhile, the variation amplitudes of these melting characteristics decrease gradually until less than 2% at 20 g. The effect of supergravity can be attributed to the intensification of the natural convection due to buoyancy, yielding vortexes in internal flow and fluctuations of solid–liquid interface and temperature field.

Experimental and numerical investigation of heat transfer in a channel with multiple phase change materials (PCMs)

2022 ◽  
Vol 45 ◽  
pp. 103710
Author(s):  
Erhan Akyol ◽  
Oktay Hacıhafızoğlu ◽  
Çiğdem Susantez ◽  
Kamil Kahveci ◽  
Ugur Akyol
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Numerical Investigation ◽  
Phase Change Materials ◽  
Multiple Phase
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