LoginAirtightness of exterior walls in buildings has a great impact on the indoor environment, energy consumption and overall building performance. However, the measurement of exterior wall airtightness is not easy, especially in high-rise buildings. International standards exist for measuring exterior wall airtightness using blowers to pressurise buildings, but there are still some technical challenges and limitations.
The main objective of this project is to develop an AIVC technical note. The document introduces novel methods for measuring the airtightness of exterior walls in high-rise buildings and describes how they can be used. One method actively utilises the stack effect in high-rise buildings during winter, while the other uses individual air-conditioning systems. The guidelines for acceptable levels of air leakage through exterior walls, as introduced by the Architectural Institute of Japan (AIJ), are also included. In addition, the report provides detailed measurement data on outdoor air entering through entrance doors during winter, including door opening status, outdoor air volumes, and heating loads for both automatic and revolving entrance doors in a high-rise building. This report will help readers understand the key aspects of exterior wall airtightness measurement and ultimately contribute to the design and operation of high-performance buildings.