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强化传热期刊
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ISSN 打印: 1065-5131
ISSN 在线: 1026-5511

强化传热期刊

DOI: 10.1615/JEnhHeatTransf.v14.i2.20
pages 105-122

Low-Reynolds Number Limit of Heat Transfer Enhancement with Phase-Change Material Slurry Flow in Micro/Minichannels

Yong X. Tao
Dean, Nova Southeastern University, Fort Lauderdale, USA
K. Q. Xing
Florida International University, Miami, FL, USA, 33174
P. Maloji
Florida International University, Miami, FL, USA, 33174
Y. L. Hao
Department of Power Engineering, Southeast University, Nanjing, Jiangsu, China, 210096

ABSTRACT

A two-phase, non-thermal-equilibrium based model is applied to the numerical simulation of laminar flow and heat transfer characteristics of suspension with phase-change material (PCM) particles in a microchannel. This study focuses on the heat transfer enhancement effects for a very low Reynolds number (Re < 50) and high PCM concentration slurry flow (50−70%). With preliminary experimental confirmation in a minitube, simulation results show the existence of an optimal operating range for low Reynolds numbers and high PCM concentrations. It is also found that the particle viscosity value has a significant influence on the heat transfer enhancement effect of PCM suspension flow and a more realistic particle viscosity correlation is suggested.


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