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Entropy Generation of Forced Convection during Melting of Ice Slurry

Institute for Thermal and Process Engineering Cracow University of Technology, al. Jana Pawła II 37, 31-864 Kraków, Poland
Entropy 2019, 21(5), 514; https://doi.org/10.3390/e21050514
Received: 31 March 2019 / Revised: 17 May 2019 / Accepted: 19 May 2019 / Published: 21 May 2019
(This article belongs to the Special Issue Entropy Production in Turbulent Flow)
This paper looks at entropy generation during ice slurry flow in straight pipes and typical heat exchanger structures used in refrigeration and air-conditioning technology. A dimensionless relationship was proposed to determine the interdependency between flow velocity and the volume fraction of ice, for which the entropy generation rates were at the minimum level in the case of non-adiabatic ice slurry flow. For pipe flow, the correlation between the minimum entropy generation rate and the overall enhancement efficiency was analyzed. As regards heat exchange processes in heat exchangers, the authors analyzed the relationship between the minimum entropy generation rate and the heat exchange surface area and exchanger efficiency. View Full-Text
Keywords: ice slurry; entropy generation rate; melting process; forced convection; tube flow; heat exchangers; non-Newtonian fluid ice slurry; entropy generation rate; melting process; forced convection; tube flow; heat exchangers; non-Newtonian fluid
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Niezgoda-Żelasko, B. Entropy Generation of Forced Convection during Melting of Ice Slurry. Entropy 2019, 21, 514.

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