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Reconstruction du système de refroidissement de l'hôtel Hilton de Prague.

[In Czech. / En tchèque.]

Auteurs : CERMAK J.

Type d'article : Article

Résumé

The cooling appliances in the Hilton hotel in Prague-Karlin were considerably damaged during the catastrophic flood in 2002. The author describes the proposed solution to changes and modifications of the cooling system and unusual difficulties, which had to be surmounted during the implementation. Water from the river Vitava, relatively cold due to the Vitava's dam cascade, was used to remove condensation heat and to direct preparation of chilled water for air conditioning. Cooling water is taken from a flushing canal of a diameter 1.5 m, passing randomly at a depth of 6 m under the floor level of hotel garages. The canal access and cooling water taking itself are unusual and unique in practices. A pumping device assembly had to be realized under difficult conditions under the canal water level with use of diving engineering. The method of perennial cool intake for air conditioning is also typical. Due to the large surface atrium glazing (approx. 2000 m2), the interior hotel rooms situated next to the atrium have a solar heat load during all seasons. The utilization of the new cooling system solved former problems and guest complaints. Further effects of this way of cooling consist in high operation economy and in removing a possible risk of Legionnaire's disease, compared to previously operated open cooling towers. Moreover, the operation has a 100% protection in summer extreme conditions, by using both types of condenser cooling - Vitava-towers.

Détails

  • Titre original : [In Czech. / En tchèque.]
  • Identifiant de la fiche : 2009-1256
  • Langues : Tchèque
  • Source : Vytápení Vetrání Instalace - vol. 17 - n. 5
  • Date d'édition : 2008

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