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Comportement de l'isolation en verre cellulaire d'un conduit de refroidissement et de chauffage urbain sujet à des attaques d'eau souterraine.

Behavior of cellular glass insulation on a district heating and cooling pipe subjected to underground water attack.

Auteurs : CHYU M. C., ZENG X., YE L.

Résumé

Cellular glass pipe insulation was tested unjacketed under flooded conditions to simulate underground water attacking an underground pipe in a district heating and cooling system. The pipe's fluid temperature was tested from 2 to 216 deg C. The surrounding water was maintained from 8 to 40 deg C to simulate the possible conduit water temperatures when the system fails. Cellular glass pipe insulation of 2-, 3- and 4-inch thicknesses was tested. The insulation demonstrated excellent moisture resistant performance when the pipe temperature was lower than the surrounding water temperature. Cracks developed in the insulation when the pipe temperature was higher than the water temperature, causing a deterioration in insulating performance.

Détails

  • Titre original : Behavior of cellular glass insulation on a district heating and cooling pipe subjected to underground water attack.
  • Identifiant de la fiche : 1999-3456
  • Langues : Anglais
  • Source : ASHRAE Transactions. 1998 annual Meeting, Toronto, Ontario + CD-ROM.
  • Date d'édition : 1998
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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