The professional ability of German Frey Group-WFP Architekten has been recognized once again. The Aohai Villa project jointly provided by the group and Junwang Energy Conservation Technology Co., Ltd. has passed the German Passive House Institute (PHI) on January 20, 2022. Professional assessment, obtained the Passive House certification.

The Aohai Villa Project is located in Changchun City, Jilin Province, Northeast China. It is divided into severe cold regions according to the climatic regions of China, and has relatively higher requirements in terms of thermal insulation thickness and heat transfer coefficient of thermal insulation materials. In order to meet the passive house standard, the heat transfer coefficient of passive doors and windows, the solar transmittance of glass, and the heat recovery efficiency of fresh air fans are higher than those of projects in other climate zones. The main contradiction of this project is to reduce the demand of building heating energy consumption in winter as much as possible, and how to optimize the building window-to-wall ratio, reduce heat loss, ensure air tightness, 

and reasonably design air volume distribution when the building's shape coefficient is relatively unfavorable , optimizing the layout of internal functions, etc. are all challenges faced by this project. Through careful control of various energy-saving technologies, comprehensive consideration of building materials and equipment parameters, thermal bridge-free design of important nodes, and close attention to the entire construction process, our designers and construction personnel are actively facing various challenges. Coping and successfully overcoming various difficulties in the construction process, so that the project finally successfully landed.

As the first passive villa project in the severe cold region, its completion and assessment standards symbolize that the Group has once again successfully implemented passive buildings in a new climate zone, not only accumulating nearly zero energy for us to develop in severe cold climate regions ,Consuming the experience of building promotion work, people can't wait to explore new areas that have not been touched before, and meet more new challenges.