Optimal insulation of structures with varying thermal conductivity

Sahin A. Z.

JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER, cilt.11, sa.2, ss.153-157, 1997 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 11 Sayı: 2
  • Basım Tarihi: 1997
  • Doi Numarası: 10.2514/2.6246
  • Dergi Adı: JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.153-157
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

The optimal distribution of a limited amount of insulation material on a composite structure is obtained. Three cases for the variation of the composite wall thermal conductivity were considered. These are 1) power, 2) linear, and 3) exponential types of variation of wall thermal conductivity with an inplane direction along the surface of the wall. The surfaces of the wall are assumed to either have constant temperatures or be exposed to ambient at given temperatures. The variation of the optimum insulation thickness is shown to be relatively smooth and easily applicable for all three profiles of thermal conductivity. For a certain optimum Length of composite structure, optimal distribution of the insulation material provides maximum percent energy savings. Optimal distribution of the insulation material may require partially covering the surface.