The goal was to see how the design of a building's outer shell affects energy use in tall apartment buildings. They looked at Turkey's tallest apartment building from 2010 to 2017, using a special program to simulate its energy use. They found that with the current design, 25% of energy was used for heating, and 14% for cooling. However, a double-layered design with air gaps can make residents more comfortable and cut energy use by 30% compared to similar buildings. In simpler terms, changing the way buildings are designed on the outside can save energy and make people living in tall apartments more comfortable.