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Influence des modifications de l'écoulement à proximité de l'entrée d'air sur l'efficacité locale du fonctionnement d'une tour de refroidissement à tirage mécanique.

The influence of airflow inlet region modifications on the local efficiency of natural draft cooling tower operation.

Auteurs : DVORSEK M., HOCEVAR M., SIROK B., et al.

Type d'article : Article

Résumé

The authors present the influence of the cooling tower airflow inlet region modifications at the Sostanj 4 thermal power plant on cooling tower local efficiency. Local efficiency change was estimated based on temperature fields of drift eliminators before and after the reconstruction of the cooling tower. Temperature fields were measured with thermal vision method. The local reduction of cooling tower efficiency was analyzed based on phenomenological relations of heat transfer obtained from the selected vertical segment of the cooling tower. The characteristic influence that the reconstruction had on temperature field was detected on the circumference of the cooling tower. The efficiency reduction was the highest on the periphery of the cooling tower and in particular section it peaked at 2%, while in most part of the area it was below 0.5%. The presented measurement and analysis method enables the estimation of changes in the local efficiency of heat transfer in cooling towers.

Documents disponibles

Format PDF

Pages : 750-759

Disponible

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    20 €

  • Prix membre*

    15 €

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Détails

  • Titre original : The influence of airflow inlet region modifications on the local efficiency of natural draft cooling tower operation.
  • Identifiant de la fiche : 30003550
  • Langues : Anglais
  • Source : Strojniski vestnik - Journal of mechanical Engineering - vol. 57 - n. 10
  • Date d'édition : 10/2011

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