Simulation Of Binary Mixtures Condensation
Using Higher Order Methods
Author(s)
H. Deng, M. Fernandino & C. A. Dorao
Abstract
The use of refrigerant mixtures as good substitutes to the phased-out pure
refrigerants has motivated the study of condensation heat and mass transfer
of mixtures in the recent years. This work presents a one-dimensional steadystate
non-equilibrium model to study the condensation heat and mass transfer
characteristics of binary mixtures inside horizontal smooth tubes. The leastsquares
finite element method (LSFEM) with higher order approximations shows
larger convergence rate when solving the system of equations. The results are
compared with experimental data and show a reasonably good prediction of the
heat transfer coefficients and fluid temperatures. It is also found that the mass
transfer resistance in the vapor phase is significant to the mixture condensation
process, which may not be neglected in both experimental and analytical studies.
The sensible heat transfer resistance in vapor is not very important and can be
neglected.
Keywords: in-tube condensation, non-azeotropic refrigerant mixtures, heat and
mass transfer resistances, heat transfer coefficient, higher order methods.
Keywords
in-tube condensation, non-azeotropic refrigerant mixtures, heat and
mass transfer resistances, heat transfer coefficient, higher order methods.
Related Book
Other papers in this volume
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