Optimal insulation of ducts subjected to external thermal radiation

Sahin A. Z.

2nd Trabzon International Energy and Environment Symposium, Trabzon, Turkey, 26 - 29 July 1998, pp.483-486 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Trabzon
  • Country: Turkey
  • Page Numbers: pp.483-486
  • Istanbul Technical University Affiliated: Yes


Optimum insulation thickness of a circular duct subjected to external radiative heat transfer is studied for a given amount of insulation material. A circular duct through which fluid is transported from one end to the other is considered. Variations of the bulk temperature of the fluid as well as the temperatures of the inner surface of the tube and the outer surface of the insulation are evaluated. It is shown that it is possible to achieve an optimal thickness variation of insulation which minimizes the heat losses to the ambient.