Analysis of Entropy Generation Rate During Non-Adiabatic Ice Slurry Flow in Pipes
Year 2020,
, 25 - 32, 29.02.2020
Beata Niezgoda-żelasko
Abstract
The paper focuses on the entropy generation rate minimization during the flow of ethanol-based ice slurry through straight pipes with a circular and rectangular cross-section. The authors’ original equations for calculating ice slurry flow resistances and heat transfer coefficients were used to determine the impact of the mass fraction of ice, ice slurry flow velocity and heat flux density on the entropy generation rate values observed during flow through pipes. A dimensionless relationship was proposed to determine the interdependency between flow velocity and mass share of ice for which the entropy values were at the minimum level.
References
- [1] B. Niezgoda-Żelasko, Modern indirect cooling systems (in Polish). Kraków: Wydawnictwo Politechniki Krakowskiej, 2017.
- [2] Doetsch C. (2001), Experimentelle Untersuchung und Modellierung des Rheologischen Verhaltens von Ice-Slurries (Doctoral dissertation), Universität Dortmund, Germany.
- [3] P.W Egolf , A. Kitanovski, D. Ata-Caesar, E. Stamatiou, M. Kawaji, J.P. Bedecarrats, F. Strub, "Thermodynamics and heat transfer of ice slurries", Int. J. of Refrig., 28 , 51-59, 2005.
- [4] B. Niezgoda Żelasko, J. Żelasko, "Melting of ice slurry under forced convection conditions in tubes", Exp. Therm. and Fluid Sci, 32, 1597-1608, 2008.
- [5] F. Illán,, A. Viedma, "Experimental study on pressure drop and heat transfer in pipelines for brine based ice slurry Part II: Dimensional analysis and rheological model", Int. J. of Refrig., 32 , 1024-1031, 2009.
- [6] S. Mellari, "Experimental investigations of ice slurry flows in horizontal pipe based on monopropylene glycol", Int. J. of Refrig, 65, 27-41, 2016.
- [7] A. Kitanovski, A. Vuarnoz, D. Ata-Caesar, P.W.Egolf , T.M. Hansen, Ch. Doetsch, "The fluid dynamics of ice slurry", Int. J. of Refrig., 28, 37-55, 2005.
- [8] B. Niezgoda-Żelasko, J. Żelasko, "Generalized non-Newtonian flow of ice slurry", Chem. Eng. and Proces., 46, 895-904, 2007.
- [9] A.H.P.Skelland , 1967, Non-newtonian flow and heat transfer. New York: John Wiley & Sons Inc., 1967.
- [10] P. Charunkyakorn, S. Sengupta, S.K.Roy, "Forced convective heat transfer in microencapsulated phase change material slurries: flow in circular ducts", Int. J. of Heat Mass Trans., 34, 819-833, 1991
- [11] B. Niezgoda Żelasko, J. Żelasko, "Generalized non-newtonian heat exchange. Flow of ice slurry in pipes", Chem. and Process Eng., 30 , 453–473, 2009.
- [12] B. Niezgoda-Żelasko, Heat transfer and pressure drop of ice slurries flows in tubes (in Polish). Kraków: Wydawnictwo Politechniki Krakowskiej, 2006.
- [13] S. Gunes, V. Ozceyhan, O. Buyukalaca, "The experimental investigation of heat transfer and pressure drop in a tube with coiled wire inserts placed separately from tube wall", App. Therm. Eng., 30, 1719-1725, 2010.
- [14] A. Bejan, 1996, Method of entropy generation minimization, or modeling and optimization based on combined heat transfer and thermodynamics, Rev. Gén. de Therm., 35, 637-646, 1996.
- [15] F. Porras, P. Guevara, G. Soriano, 2013, "A study for entropy generation of heat transfer fluid containing Multiwalled Carbon Nanotubes and Microencapsulated Phase Change Materials” in Innovation in Engineering, Technology and Education for Competitiveness and Prosperity, Proceedings of the 11th Latin American and Caribbean Conference for Engineering and Technology, Cancun, Mexico, pp. 1-11, 2013.
- [16] N. Bouzid, S. Saouli, S. Aiboud-Saouli, "Entropy generation in ice slurry pipe flow", Int. J. of Refrig., 31, 1453–1457, 2008.
- [17] F. Strub, J. Castaing-Lasvignottes, J.P. Bedecarrats, C. Peuvrel, "Application of the second law analysis to a heat exchanger working with ethanol/water ice slurry", Int. J. of Therm., 7, 192–188, 2004.
- [18] A. Kaymar, S.M. Aminossadati, C.R. Leonardi, "Thermo-hydrodymanics of a helical coil heat exchanger operated with a phase-change ice slurry as a refrigerant", Heat Tran. Eng., 40, 283–294, 2019.
- [19] A. Melinder A., Thermophysical properties of liquid secondary refrigerants. Tables and diagrams for the refrigerants industry, Paris: IIF/IIR, , 1997.
- [20] O. Bel, A. Lallemand, "Etiude d’un fluide frigoporteur diphasique. 2: Analyse expérimentale du comportement thermique et rhéologique", Int. J. of Refrig., 22, 175-187, 1999.
- [21] A. Melinder, E. Granryd, "Using property values of aquaous solutions and ice to estimate ice concentrations and enthalpies of ice slurries", Int. J. of Refrig., 28, 13-19, 2005.
- [22] W. Kozicki, C.H.Chou, C. Tiu, "Non-Newtonian flow in ducts of arbitrary cross-sectional shape", Chem. Eng. Sci., 21, 665-679, 1966.