Eco-city green building development accelerates upgrading

2019-10-21 12:12

On October 16, the Sino-Singapore Tianjin Eco-City Public Housing Phase II Passive House Project was officially awarded the title of “PHI Passive House Certification” by the German Passive House Authority (“PHI”, Passive House Institute, Germany). Passive House Research Institute is the first completed high-rise passive housing project certified by the agency worldwide. With the delivery of the project, this has become another new breakthrough in the development of green buildings in the Eco-city, promoting the accelerated development of regional green building development.

The Eco-city passive house project has been certified by the world's authoritative organization, which means that the two passive houses 103 houses in the fourth and fifth buildings of the Eco-City Public Housing Phase II will be officially delivered. This low-energy houses full of technologies have finally shown its true content.

The reporter learned that the Eco-City Public Housing Phase II Passive House Project started construction in September 2015. At the beginning of the design and construction of the project, there are no precedents for many technical details. At the same time of introducing German technology, the Eco-City has cooperated with the German Institute of Passive Houses and the China Academy of Building Research to study the characteristics of the Eco-City and conduct in-depth research.

“Ecological City Public Housing Phase II Passive House Project adopts the most advanced exterior wall insulation system, building airtight technology, full heat recovery fresh air conditioning system, fully automatic external shading technology and no heat bridge technology, which can achieve high performance insulation. The four seasons in the house are like spring. According to Berthold Kaufmann, executive director of the German Passive House Research Institute, the wall of the passive house is 240 mm thick and 160 mm thicker than the average house. This is because the use of graphite polystyrene board, equivalent to wearing a layer of "thick cotton jacket", can fully resist the heat exchange, to minimize the heat loss outside the house, so such passive houses do not need to lay heating pipes. There is also no need for central heating. At the same time, the passive house adopts a new fan with 85% ultra-high heat recovery efficiency, and the air replacement is carried out 24 hours a day, and the air pollutants, impurities and PM2.5 pass through the filter while the indoor constant temperature and humidity are always maintained.

“Passive house construction is an important trend in the future development of green buildings.” According to Chen Zeng, deputy director of the project management department of Eco-city Public Housing Construction Co., Ltd., the Eco-city passive house can achieve total energy consumption of less than 120kWh/m2 for the whole year. A rate of 90% can save occupants 2/3 of heating costs. At the same time, as a scenario of Eco-city smart city construction, passive houses can be managed by smart routers, smart curtains, smart air conditioners, smart security door locks, etc., so that all smart home devices can be managed through the back-end platform. Remote control of environmental monitoring equipment will be installed indoor installation to have real-time monitoring of temperature, humidity, carbon dioxide, PM2.5 and other data in the passive room.

The relevant person in charge of the Eco-city Administrative Committee said that in the future, the Eco-city will further explore the new technology of passive houses, and use this as a template to continue to promote the coverage of passive houses in the whole region and promote the development of Eco-city green buildings into a new stage.

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