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Etude analytique et numérique sur les caractéristiques d'un échangeur de chaleur sol/air, utilisé pour les systèmes de ventilation.

Analytical and numerical investigation of the characteristics of a soil heat exchanger for ventilation systems.

Auteurs : KABASHNIKOV V. P., DANILEVSKII L. N., NEKRASOV V. P., et al.

Type d'article : Article

Résumé

The model is based on the representation of temperature in the form of the Fourier integral. For-high frequency components with characteristic times of the order of 24 h, an exact analytical solution is used. Calculation of low-frequency components with characteristic times of the order of a year is based on simulation of a tube by a linear heat source. The degree of decrease in the efficiency of the heat exchanger with decrease in the spacing between its tubes is evaluated. The dependencies of the thermal power of the system on the length and diameter of the tubes, depth of their burial and air flow rate are calculated. An analytical expression is obtained for the optimum length of the tube. The evolution of the thermal power of the system during its operation over a 10-year period only in winter is calculated.

Détails

  • Titre original : Analytical and numerical investigation of the characteristics of a soil heat exchanger for ventilation systems.
  • Identifiant de la fiche : 2002-3148
  • Langues : Anglais
  • Sujet : Généralités
  • Source : International Journal of Heat and Mass Transfer - vol. 45 - n. 10
  • Date d'édition : 05/2002

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