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Document IIF

Recherche de méthodologie sur la résolution de transfert de chaleur par rayonnement en régime transitoire dans une pièce avec un plafond à panneaux de refroidissement rayonnants.

Methodology research on solving non-steady state radiation heat transfer in the room with Ceiling Radiant Cooling Panels.

Auteurs : ZHANG X., LI N., SU L.

Type d'article : Article, Article de la RIF

Résumé

Long wave radiation heat transfer is the dominant cooling mode of the Ceiling Radiant Cooling Panels (CRCP). This unique cooling mode makes the calculation of indoor long wave radiation heat transfer extremely important. Actually, indoor radiation heat transfer is usually under non-steady state conditions. General calculation methodology (simplifying radiation heat transfer or using the equivalent network method of steady state) is complex and less accurate when solving this kind of problem. In addition, general methodology fails to solve the situation that the temperatures of some interior surfaces are lacking but the heat flows are known. This paper provides a calculation methodology improving the Gebhart method for modeling the non-steady state radiation heat transfer between indoor surfaces. Given parameter variations (temperature and net radiant heat flow) of the surfaces are transformed into discrete column vectors of unit time, and then matrix equations are established, which can greatly reduce the work. This methodology has been verified experimentally, which can be regarded as a theoretical basis for solving indoor non-steady state radiation heat transfer of CRCP systems.

Documents disponibles

Format PDF

Pages : 110-120

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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Détails

  • Titre original : Methodology research on solving non-steady state radiation heat transfer in the room with Ceiling Radiant Cooling Panels.
  • Identifiant de la fiche : 30015684
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 58
  • Date d'édition : 10/2015

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