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Thermal performances of wall elements when the mechanical stiffness is constrained.

Author(s) : LORENTE S.

Summary

The paper shows that the internal structure of a wall (the number of air cavities) can be optimized so that the overall thermal resistance of the wall is maximal, while the mechanical stiffness of the wall is fixed. The maximized thermal resistance increases when the effect of natural convection in the air spaces is weaker, and when the specified wall stiffness decreases. The optimal number of air gaps is larger when the effect of natural convection is stronger, and when the specified wall stiffness is smaller. The optimal structure is such that the volume fraction occupied by air spaces decreases when the natural convection effect (the overall Rayleigh number) increases, and when the prescribed wall stiffness increases.

Details

  • Original title: Thermal performances of wall elements when the mechanical stiffness is constrained.
  • Record ID : 2003-1219
  • Languages: English
  • Source: Eficienta, confort, conservarea energiei si protectia mediului. Volumul 1. Termodinamica si transfer de caldura. Conferinta a VIII-a, cu participare internationala.
  • Publication date: 2001/11/28
  • Document available for consultation in the library of the IIR headquarters only.

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