Ultra-low energy consumption building is a rapidly developing and comfortable building in the world in recent years. Under the background of increasingly serious energy crisis and environmental pollution, it is an important way to deal with climate change, energy saving and emission reduction, and represents the development direction of building energy saving in the world. Global climate change is the problem and development challenge facing human beings in the world and in the long future. Ultra-low energy consumption building is one of the important fields of energy saving and emission reduction and dealing with climate change. International building energy-saving technology has improved very rapidly, from low-energy buildings to passive ultra-low-energy buildings to capacity buildings.
Developed countries have proposed development goals for near-zero energy consumption. There are currently 3339 zero-energy projects in North America, involving 6177 units of users. The United States issued “Environmental, Energy, and Economically Beneficial Federal Measures” in October 2009, requiring all federal buildings planned to be built or leased to be designed to achieve zero energy consumption from 2020 onwards, so that the buildings Materials can reach net zero energy consumption in 2030. The purchase or lease of federal government assets requires zero energy consumption as one of the assessment indicators. By 2040, 50% of commercial buildings will reach zero energy consumption; by 2050, all US commercial buildings will reach net zero energy consumption.
The European Union enacted a building energy consumption directive in 2002. The building energy consumption directive revised in 2010 proposed that all new buildings on the European continent must reach a near zero energy consumption level by 2020. Currently, more than half of the countries in Europe are implementing this energy directive, and each has its own sub-target. Among them, Germany proposes that the buildings owned or used by government departments will reach nearly zero energy consumption from 2019, new buildings will reach nearly zero energy consumption from 2021, and all existing buildings will reach nearly zero energy consumption by 2050. The UK requires new buildings to reach zero energy consumption after 2016, and zero energy consumption for public buildings after 2019.
In East Asia, Japan has formulated a policy roadmap for building energy efficiency from benchmark buildings, ultra-low energy consumption, near zero energy consumption to zero energy consumption by 2030. In 2020, new public buildings will achieve nearly zero energy consumption, and in 2030, all new buildings will be nearly zero energy buildings. Korea promulgated the “Action Plan for Zero Energy Buildings to Address Climate Change” in July 2014, formulated corresponding promotion policies and incentive measures, and proposed to achieve the goal of zero energy buildings by 2025.
Obviously, in the past 10 years, passive ultra-low energy consumption green buildings, as a kind of energy-saving buildings with low energy consumption and high comfort, have been determined by most countries and organizations as residential standards or the direction of future urban development planning, becoming an international energy-saving The trends and trends of architecture have received high attention and rapid application in all parts of the world.
China’s building energy conservation started in the 1980s. The “Civil Building Energy Efficiency Design Standards” promulgated by the original Ministry of Construction in 1986 required new residential buildings to save energy by 30% on the basis of the local general design energy consumption level in 1980, opening a new stage of building energy efficiency in China. In recent years, as climate and environmental issues have become increasingly prominent, the public’s requirements for the quality of the living environment have gradually increased. The Ministry of Housing and Urban-Rural Development, which is responsible for building energy saving, has played a huge role in green buildings and passive ultra-low energy green buildings that can play a huge role in building energy saving. Attach great importance to the promotion of combined products.
At present, ultra-low energy consumption green buildings are being developed in an orderly manner. My country’s building energy conservation has become a consensus. The ultra-low energy consumption standards represented by prefabricated buildings will become the mainstream trend of the construction industry. The overall social environment and technical conditions are also very beneficial to the in-depth development of energy conservation. To this end, the construction industry needs collective efforts to accelerate the transformation of its development mode, and rely on its own technological progress and technological innovation. Ultra-low energy consumption buildings are bound to be fully developed in my country and change the status quo of the entire construction industry.