Extended Thresholds II The Articulated Envelope

Previous to the widespread adoption of air conditioning in the 20th century, which introduced a distinct differentiation between controlled interior space and the external environment,'a wealth of strategies' were developed in Turkey to moderate the transition between inside and outside. There is much to learn from these no-energy and low-energy solutions to climate control. Here, Michael Hensel and Defne Sunguroglu Hensel describe the original research and special study they undertook of external vertical thresholds in an extended envelope when they gained special access to the 17th-century Yerevan Kiosk and Baghdad Kiosk in the Topkapi Palace in Istanbul.