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Numerical model of a vapour-compression refrigeration system.

Author(s) : KOURY R. N. N., MACHADO L., ISMAIL K. A. R.

Summary

The modelled system is constituted by an open speed-controlled compressor, a manual expansion valve, an evaporator, a condenser, and both counter-flow multitubes. As the expansion valve and the compressor have a very small thermal inertia, their internal energy variations over time were not considered. The heat exchangers were modelled from the mass, energy and momentum equations for each control volume under consideration. A dynamic model was employed to evaluate the behaviour of the system in a start-up. Based on the same conditions of the dynamic simulations, a steady-state model was employed to evaluate the operation point after start-up. Good agreement has been reached between the dynamic and steady state numerical model predictions.

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Details

  • Original title: Numerical model of a vapour-compression refrigeration system.
  • Record ID : 2000-1273
  • Languages: English
  • Source: 20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
  • Publication date: 1999/09/19

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