Determination of optimum air-layer thickness in double-pane windows

Aydin O.

ENERGY AND BUILDINGS, cilt.32, sa.3, ss.303-308, 2000 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 32 Konu: 3
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1016/s0378-7788(00)00057-8
  • Sayfa Sayıları: ss.303-308


In this study, heat transfer through a double-pane window is numerically analyzed by a finite difference technique. The aim of the study is to determine the thermally optimum air-layer thickness between the two panes for different climates. Four different cities of Turkey, representing different climate conditions are considered: Ankara, Antalya, Kars and Trabzon. The height of the window, H is chosen 80 cm. The effect of air-layer thickness varies between 3 and 40 mm on the average Nusselt number and the heat flux through the inner pane. It was shown that energy losses through the double-pane windows can be considerably reduced by optimizing the thickness of air layer. (C) 2000 Published by Elsevier Science S.A.