Numerical solution of homogeneous double pipe heat exchanger: Dynamic modeling

AliHosseinpour, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. Abstract:
  3. Dynamic modeling of a double-pipe heat exchanger is the subject of the current study. The basis of this study is the same velocity of vapor and liquid phases or, in other words, homogeneous phase, in the annulus part of the exchanger. The model can predict the temperature and vapor quality along the axial pipe from the pipe inlet up to a distance where steady state conditions are achieved. The simulation is conducted for two modes of co- and counter-flow in a one dimensional transient system. The physical properties of water are estimated from empirical correlation and a saturated vapor table with cubic spline interpolation. The exchanger model, which is a set of Ordinary Differential Equations (ODEs), ODEs and algebraic equations, has been solved numerically. Modeling results have been investigated for different operating times and two modes of co- and counter-current
  4. Keywords:
  5. Double pipe ; Finite difference ; Heat exchanger ; Homogeneous modeling ; Finite difference method ; Ordinary differential equations ; Algebraic equations ; Cubic-spline interpolation ; Double-pipe heat exchangers ; Empirical correlations ; Homogeneous models ; Steady-state condition ; Structured mesh ; Interpolation ; Numerical model ; Simulation ; Steady-state equilibrium ; Velocity
  6. Source: Scientia Iranica ; Volume 21, Issue 2 , 2014 , pp. 449-455 ; ISSN: 10263098
  7. URL: http://www.scientiairanica.com/en/ManuscriptDetail?mid=167