What does the nearly zero -energy consumption house look like?Zhejiang's first near -zero -energy consumption high -rise residential main body

Zhejiang News Client reporter Zheng Yali intern He Yuzheng

What does the nearly zero -energy consumption house look like? A few days ago, in Lin'an, Hangzhou, the main body of the Zhongtianjinjin School project developed by Zhongtian Construction Group Architectural Design and Research Institute and developed and constructed by Zhongtianmei Group was completed. Among them, Building 6 is the first nearly zero -energy consumption high -rise residence in Zhejiang, and the energy saving rate of the building can reach more than 90%.

It is understood that the project is planned and designed in accordance with the GB/T 51350-2019 of the "Near-Zero Energy Building Technology Standards", and was obtained in December 2021 by the near-zero energy consumption building design logo certification certified by the China Architectural Energy Conservation Association. It is Zhejiang Province. The first high -rise residential project that passed the nearly zero energy consumption design evaluation. Deduction of photovoltaic power generation, the five energy consumption of the construction air conditioning, heating, lighting, elevator and living hot water consumption consumption throughout the year can be as low as 20 degrees/square meter.

"The essence of nearly zero energy consumption building is to provide a comfortable indoor environment with the least energy consumption." Xu Zhou, deputy chief architect of Zhongtian Architectural Design Institute, said that architecture is actually a "big household" energy consumption. In the process of new, transforming and using, energy -saving materials, technology, technology, equipment, etc. can be used to reduce energy consumption.

"For example, Building 6, there is no obvious difference from ordinary architecture from the appearance, but the thickness of the insulation board of the exterior wall of the building is very different." Xu Zhou told reporters that the insulation board of the exterior wall is two or three cm thick. However, nearly zero -zero -energy consumption buildings must reach more than ten centimeters, which greatly reduces the heat transfer coefficient. The performance of alone is 4 times that of the conventional insulation and heat insulation measures in Zhejiang, and the cooling energy consumption of refrigeration is only 20%-30%of conventional projects.

The outer window design of the near -zero energy consumption building also has "careful thinking". The outer window uses aluminum -wood composite three -glass passive windows, coupled with high -strength gas -density composite adhesives, the air tightness of the room can be increased from level 6 of ordinary buildings to level 8. 2 to 3 times, solving the problem of more calories in the external doors and windows of conventional projects.

On the outer wall, this nearly zero -energy consumption building has an electric sun -shaped rolling shutter. Don't underestimate this "physical sunscreen", which can effectively control the sun to enter the indoor space, reduce the cold load of the building in the building of about 30%, and meet the demand for reducing the energy consumption of air -conditioning in the building in the building.

The environmental all -in -one machine with heat recovery is the core technical measure of the project. In this nearly zero -zero -energy consumption building, residents can achieve no windows all year round, but maintain the circulation of high -quality fresh air. Through this device, the indoor environment can maintain the effect of "balance, wetting, balanced oxygen, and net". At the same time, the heat can be left and exhausted the exhaust gas.

Solar energy is an important form of renewable energy. In Building 6 project, the roof adopts polysilicon solar photovoltaic components, the photovoltaic laid area of ​​260 square meters, 72 photovoltaic components with a single piece of power generation power of 450W, the installed capacity of 32.4kW, and the annual power generation capacity of 31,000 kWh. Meet 15%of the power consumption needs of the building.

As one of the main industries of carbon emissions, the green transformation and upgrading of the construction industry is essential to achieve carbon peak carbon neutrality. However, due to the increase in costs, the promotion is also slow. The Zhongtian Architectural Design Institute is based on the experience of nearly zero energy consumption residential demonstration project, and promotes the goal of helping the large -scale construction of nearly zero energy consumption residential buildings.

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