Tianjin: Breathing House Tianjin's First "Zero Energy Consumption" Steel Structure Assembled Building Begins in Jinghai in 2022

"Is it a fantasy to let the summer sunshine bring warmth to people in winter?" Ren Jun, a professor at the School of Architecture at Tianjin University, said it was not a delusion.
A few days ago, the "Sino-German Eco-City Exhibition Hall" designed by a team led by Ren Jun passed the evaluation of the China Building Energy Conservation Association and obtained the national authoritative certification. After completion, it will become the first "zero energy consumption" building in Tianjin.

Sino-german eco-city exhibition hall bird's eye view renderings. Figure provided by interviewees

　　As a steel structure assembly building, the assembly rate of the exhibition hall can reach 92% after completion, which means that basically all structures of the exhibition hall of Sino-German Eco-City, including traditional decoration materials for wet operations such as sand and cement, will be replaced by factory prefabricated wall panels. The prefabricated building under the steel structure system will reduce carbon emissions from the source of material production, greatly reduce environmental pollution during construction, and ensure the green environmental protection of the entire industry chain.
According to national standards, energy-consuming buildings are divided into ultra-low energy consumption, near-zero energy consumption and zero energy consumption. The "Sino-German Eco-City Exhibition Hall" adopts the concept of "passive" houses. The energy generated by photovoltaic power generation systems in roofs, parking lots, carports, etc. can offset each other with the energy consumed in the process of building use, thus reaching the zero-energy building standard. To ensure that the comprehensive value of building energy consumption is not higher than 29 kW h/m2 per year, this technology can reach the world's top level.

Analysis diagram of energy-saving profile of Sino-German eco-city exhibition hall. Figure provided by interviewees

　Project designer Ren Jun said in an interview that the zero-energy building designed this time makes full use of natural light, solar thermal energy and other natural energy to improve its own insulation system. The use of natural circulation system in the process of use, to meet the needs of comfort at the same time, to achieve ultra-low energy consumption in building use.
"We can imagine such a picture, in the tree-lined, sparkling water park. The sun shines through the huge skylight into the house, people sit in the house or chat or read, cool in summer, warm in winter. Whether bathing in the sun or enjoying the snow, the house is always constant temperature for all seasons and complements the park environment. And such a building almost no energy consumption, is a breathing, living house." Ren Jun said.

Sino-germany eco-city exhibition hall renderings. Figure provided by interviewees

At the end of October, the Information Office of the State Council issued a white paper entitled "China's Policies and Actions to Address Climate Change" to promote "promoting green buildings and gradually improving the green building evaluation standard system. Demonstration of ultra-low energy consumption and near-zero energy consumption buildings." Professor Ren Jun of Tianjin University led the team to reduce building energy consumption through the use of renewable energy and the full use of natural energy under the premise of ensuring the use of buildings, and strive to achieve low-carbon emissions in the entire building industry chain.
On the other hand, the School of Architecture of Tianjin University has been committed to the research of low-carbon buildings for a long time, in order to promote the development of energy conservation and emission reduction in the construction field, green and low-carbon transformation, promote the supply-side structural reform of the construction industry, and promote the realization of carbon peak and carbon neutrality in China. Whether it is an ultra-low-energy community cultural service center, a demonstration hut that can produce more than 200 per cent of its own capacity, or a low-carbon demonstration town and other projects are all at the world's leading level.
It is reported that the eco-city exhibition hall will start construction in the Sino-German Tianjin Daqiuzhuang Eco-City Portal Exhibition Park in Jinghai District next year, with a total construction scale of about 1980 square meters. After completion, the exhibition hall will be opened to the public as a demonstration site for the promotion of low-carbon buildings, where citizens can experience a low-carbon, environmentally friendly and green lifestyle.

Source: China new network