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Approche numérique de la modélisation d'un échangeur de chaleur à tubes ailetés avec transfert de chaleur entre les tubes.

Numerical approach for modelling air-to-refrigerant fin-and-tube heat exchanger with tube-to-tube heat transfer.

Auteurs : SINGH V., AUTE V., RADERMACHER R.

Type d'article : Article, Article de la RIF

Résumé

A new model for simulating air-to-refrigerant heat exchangers, which accounts for conduction along the fins (tube-to-tube), is introduced. This model is based on a segment-by-segment approach and is developed to be general purpose and flexible simulation tool. To account for fin conduction, the heat exchanger is spatially modelled on a Cartesian grid. A set of equations that conserve energy over a segment of a heat exchanger is introduced. A sub-dividable segment model is introduced that accounts for changing flow regimes, and associated wall temperatures, within a tube segment. The model prediction is validated against experimental data obtained from experiments and the literature. The predicted results agree within plus or minus 3% of overall heat load and all tube-bend temperatures agree within plus or minus 3.9°C of measured temperatures for the first set of experiments. For the second set of experiments, all predicted tube-bend temperatures agree within plus or minus 8.5°C and overall heat load agrees within plus or minus 5%.

Documents disponibles

Format PDF

Pages : 1414-1425

Disponible

  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : Numerical approach for modelling air-to-refrigerant fin-and-tube heat exchanger with tube-to-tube heat transfer.
  • Identifiant de la fiche : 2009-0075
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 31 - n. 8
  • Date d'édition : 12/2008

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