Field measurement and analysis of ventilation effects of a doubleskin facade in Chongqing

Analyses the ventilation effect in the doubleskin facade of a refurbished building in summer and winter through the field measurement data including air temperature and velocity in the passage and temperature of inside surface of the wall. Questionnaires of thermal comfort for the staff in the building are used to survey the difference between the original envelope and the doubleskin facade. Analyses the problems in design of the doubleskin facade and points out matters needing attention in the structural design.