DSC study and computer modelling of the melting process in ice slurry

Abstract In order to understand the non-isothermal melting kinetics in the ice slurry, a differential scanning calorimetry (DSC) was used. Experimental results were compared to those obtained by a numerical simulation in which a general enthalpy method was applied. In this work the ice slurry studied consists of ice particles uniformly dispersed within a water–antifreeze liquid mixture. The effects of the heating rate and the initial antifreeze mass fraction are discussed. It has been found that the temperature gradients inside the sample of the solution become important if either heating rate increases or initial antifreeze mass fraction decreases.

[1]  Denis Flick,et al.  Heat transfer with freezing in a scraped surface heat exchanger , 2005 .

[2]  Åke Melinder,et al.  Using property values of aqueous solutions and ice to estimate ice concentrations and enthalpies of ice slurries , 2005 .

[3]  V. Ayel,et al.  Crystallisation of undercooled aqueous solutions: Experimental study of free dendritic growth in cylindrical geometry , 2006 .

[4]  Y. Zeraouli,et al.  Heat transfer inside emulsions. Determination of the DSC thermograms. Part 1. Crystallization of the undercooled droplets , 1994 .

[5]  I. Mellan Industrial solvents handbook , 1977 .

[6]  Vaughan R Voller,et al.  Implicit Finite—difference Solutions of the Enthalpy Formulation of Stefan Problems , 1985 .

[7]  V. Ayel,et al.  Rheology, flow behaviour and heat transfer of ice slurries: a review of the state of the art , 2003 .

[8]  Brian G. Thomas,et al.  Fixed grid techniques for phase change problems: A review , 1990 .

[9]  J. Guilpart,et al.  Comparison of the performance of different ice slurry types depending on the application temperature , 2006 .

[10]  V. Voller,et al.  ERAL SOURCE-BASED METHOD FOR SOLIDIFICATION PHASE CHANGE , 1991 .

[11]  Michael Kauffeld,et al.  From physical properties of ice slurries to industrial ice slurry applications , 2005 .

[12]  Christophe Peuvrel Etude des transferts thermiques lors de la circulation dans un échangeur d'un fluide frigoporteur à changement de phase solide-liquide , 2003 .

[13]  Y. Zeraouli,et al.  Heat transfer inside emulsions. Determination of the DSC thermograms. Part 2. Melting of the crystallized droplets , 1994 .

[14]  P. Egolf,et al.  Thermodynamics and heat transfer of ice slurries , 2005 .