Shanghai World Expo Leads China'S Green Building Concept

With the progress of science and technology, architecture has developed from the most primitive place of shelter from wind, rain, cold and summer to a space that can fulfill human dreams and realize more possibilities. The function of architecture is being extended indefinitely. However, while human beings pursue the function and comfort of buildings, building energy consumption is also growing, which has become a globally recognized major energy consumer, along with industry and transportation.

Energy conservation, consumption reduction, green and health have become the common pursuit of the world for future buildings. Building energy consumption reduction will play a decisive role in energy conservation and emission reduction of the whole society. The World Expo being held in Shanghai is the gathering place of global green building technology, leading the development direction of green energy conservation in the global construction industry. Today's advanced energy saving wisdom may provide possibilities for the green future of tomorrow's mankind.

The Expo Axis, 1045 meters long and 100 meters wide, is the main axis of the space landscape and pedestrian traffic in the Expo Park, and also the largest single project in the park. With its low-carbon and environmentally friendly design, it has become a model of global ecological architecture.

The design of the Expo Axis fully introduces the concepts of ecology, environmental protection and energy conservation, and introduces green, fresh air and sunshine into the space of each floor through the Sunshine Valley and the grass slopes on both sides; At the same time, new environmental protection and energy saving technologies such as ground source heat pump, river water source heat pump and rainwater collection and utilization are also adopted.

The most distinctive feature is the six conical sun valleys, such as the blooming "flowers" falling "on the Expo Axis. The beautiful Sunshine Valley can not only introduce sunlight and air into the underground floors, greatly reduce the energy consumption for lighting, ventilation and cooling, but also collect rainwater like a funnel and then treat it, providing water for toilets, greening and irrigation.

The World Expo Center, another permanent building of the World Expo, has become the only green building in China under the dual control of China's three-star standard and the U.S. LEED Gold Award. It is a model of green buildings in the World Expo Park and represents the cutting-edge level of energy-saving buildings in the world today.

The stone and glass curtain walls on the facade of the Expo Center realize natural ventilation and lighting. The transparent exterior wall is bright and transparent, which not only gives a panoramic view of the surrounding scenery, but also greatly reduces the size of the building itself; The total installed capacity of solar energy on the roof is up to 1 MW, and LED lighting, river water source, ice storage, water storage, rainwater collection and other energy-saving and environmental protection technologies are also used. The utilization rate of renewable energy in the Expo Center has reached 52%, and the proportion of recyclable building materials has reached 28.9%. The annual energy consumption can be saved equivalent to 2160 tons of standard coal, the annual carbon dioxide emissions can be reduced by 5600 tons, and the annual natural water saved is 160000 tons, accounting for 76% of the annual water consumption.

The most iconic China Pavilion in the Expo Park actually contains a lot of "green" wisdom. The overhanging shape can naturally form the sun shading from the upper layer to the lower layer in summer; The addition of small-scale constructed wetlands in landscape design can achieve circular self-cleaning and become an ecological landscape. A lot of solar energy technology is also used. There are many solar cells on the top and outside walls to maintain energy supply.

The cultural center hosting the opening ceremony of the World Expo is like a huge shell floating in the Huangpu River at night. The building also adopts many environmental protection and energy saving technologies, such as photoelectric curtain wall system, river water source cooling system, pneumatic waste recycling system, air-conditioning condensate and roof rainwater collection system, and program-controlled green space water-saving irrigation system.

The solar panel on the roof of the Expo Theme Pavilion has an area of more than 30000 square meters and an installed capacity of 2.8 megawatts. It is the largest single solar roof in the world at present. The power generation capacity can supply 4500 residents in Shanghai, and it will become the leader in the integrated application of photovoltaic buildings in China in the future.

Except that the largest permanent buildings in the Expo Park use the most advanced energy-saving and environmental protection building technology, almost all the pavilions displayed at the Expo have their own "green cards".

The Spain Pavilion, Indonesia Pavilion, Norway Pavilion, Canada Pavilion, Brazil Pavilion and many other venues made of wood, bamboo, rattan, and even recycled materials all remind people of the power of "green" urban buildings in the future, and inspire people to look for ways to remove the label of "big energy consumers" in buildings and achieve a balance between low energy consumption, high comfort, and environmental protection.

In the urban best practice area, the "Hamburg House" from Germany can be called a super energy-saving building. By using various building energy-saving means, the energy consumption of this future house is only one tenth of that of ordinary residential buildings.

The case "Hushang Ecological Home" from Shanghai, China, was built with 150000 old stone warehouse doors demolished during the reconstruction of the old city of Shanghai, integrating ecological intelligence technology. Through the integrated design of the structure and technical facilities of the five main "ecological" elements of "wind, light, shadow, green and waste", it will display a greener "Shanghai house" in the future.

Cao Jiaming, the design director of "Hushang Ecological Home" and vice president of Shanghai Modern Architecture Group, told reporters that ecological energy-saving buildings focus on ideas and practices, not all of which require advanced technology and high costs. For example, "Hushang Ecological Home" has made full use of energy-saving methods in traditional buildings in Shanghai, such as ventilation, self shading, natural light, patio green, etc, Even in summer and winter, the house can be suitable without increasing energy consumption. "The World Expo is the focus of global green building concepts. Through mutual exchange and learning, more new technologies and traditional wisdom will be combined, which will play a key role in the future of human architecture," Cao Jiaming said.