What is the significance and development status of green and low-carbon buildings?

Buildings are the main places where humans live, work, and entertain. However, during the life cycle of a building from planning and design, to construction, operation, later decoration, and final demolition, it goes beyond planning and design. ,Other stages are accompanied by resource utilization, energy ,input, and the discharge of waste water, waste gas, and waste. With the acceleration of urbanization, there are more and more urban buildings. The cycle of building life cycle makes people realize that the building itself is the result of energy accumulation. Just as the definition of green building in the "Green Building Evaluation Standards": "During the entire life cycle of the building, save resources to the greatest extent, protect the environment and reduce pollution, provide people with healthy, suitable and efficient space for use, and be in harmony with nature. ***Born Architecture”.

Low-carbon buildings refer to reducing the use of fossil energy, improving energy efficiency, and reducing carbon dioxide emissions throughout the entire life cycle of building materials and equipment manufacturing, construction, and building use. At present, low-carbon buildings have gradually become a mainstream trend in the international construction industry. An often overlooked fact is that buildings account for almost 50% of total carbon dioxide emissions, which is much higher than the transportation and industrial sectors. On the road to developing a low-carbon economy, the "energy saving" and "low carbon" of buildings are destined to become unavoidable topics.

The significance of green and low-carbon buildings

Save energy and resources and reduce CO2 pollution

The building itself is a large energy consumer and also has a significant impact on the environment. According to statistics, 50% of the world's energy is used in buildings. At the same time, more than 50% of the material raw materials obtained by humans from nature are also used to build various buildings and ancillary facilities. Although roads, bridges, tunnels, etc. cannot be measured by green buildings, residential areas, office buildings, apartments, etc., utilize resources over and over again. In addition, air pollution, light pollution, and electromagnetic pollution caused by construction account for more than one-third of the total environmental pollution. 40% of the garbage generated by human activities is construction waste. For developing countries, due to the influx of large numbers of people into cities, the demand for housing, roads, underground engineering, and public facilities is increasing, and more and more energy is consumed. This is in line with the increasing shortage of oil. Resources and coal resources have created irreconcilable conflicts.

In addition, the energy used in the construction process, such as electricity, gasoline, diesel, etc., is accompanied by the generation of CO2. For example, electricity comes from the combustion of coal, and the transportation of building materials comes from electricity or gasoline or diesel. combustion, etc., and these energy consumption are huge. Our country is in a period of rapid economic development, and people's pursuit of a high level of life is getting stronger and stronger. This consumption upgrade has made people's requirements for buildings higher and higher, and per capita energy consumption is also getting higher and higher, and the CO2 waste generated More and more, this is contrary to the concept of environmental protection advocated globally. Taking thermal power as an example, thermal power around the world emits about 0.5kg of CO2 per kilowatt hour of electricity. my country's thermal power generation technology is not high. It is initially estimated that one kilowatt hour of electricity emits about 0.7kg of CO2, and my country's thermal power generation accounts for about 75% of the total power generation. During the construction process, some energy also appears in the form of indirect electrical energy. It is estimated that by 2020, my country's building energy consumption will reach 1.089 billion tons of standard coal, which also means the generation of 2 billion tons of CO2. However, if building energy conservation is promoted, based on the current speed and technology, the standard coal consumption will be reduced by 1/4. This will greatly alleviate the pressure caused by the global greenhouse effect and also greatly protect other resources.

Green and low-carbon buildings provide a more comfortable living environment

Green, low-carbon buildings and sustainable buildings. The ability of green and low-carbon buildings to provide a more comfortable living environment is determined by their own properties. Its content includes not only the building itself, but also the environmental ecological functional system inside and outside the building, and the stable ecological service and maintenance functional system that builds community safety and health.

In terms of outdoor environment, green and low-carbon buildings integrate green configuration, natural ventilation, natural lighting, low-energy envelope, new energy utilization, reclaimed water reuse, green building materials and intelligence through scientific overall design. Control and other high-tech technologies have six characteristics: reasonable site planning, efficient resource utilization and recycling, comprehensive and effective energy-saving measures, healthy and comfortable building environment, harmless waste emission reduction, and flexible and appropriate building functions.

Indoor environment.

These environments essentially determine people's comfort. Through green buildings, we can make full use of all resources, adapt to local conditions, start from planning, design, and environmental configuration architectural techniques, and use various green technical means to reasonably improve the indoor comfort of the building. , while ensuring people's healthy life and providing residents with a good quality of living environment.

Responding to global climate challenges with "low carbon"

Low carbon design refers to the use of low carbon technology, zero carbon technology and even negative carbon technology strategies to achieve low carbon, zero pollution, high A design approach to efficiency sustainability goals. Everyone is paying close attention to the situation of global climate change. For our construction field, our task of energy conservation and emission reduction is of great significance and arduous. Building ecological low-carbon cities, low-carbon ecological communities, and low-carbon green buildings has become a global trend. Key strategies for addressing challenge areas. Compared with green buildings, low-carbon buildings and green buildings are basically the same in connotation and goals, but their focus is different. Green low-carbon buildings place more emphasis on reducing pollution emissions; low-carbon emissions are about reducing carbon emissions, which is more in line with the theme of energy conservation and emission reduction to deal with global climate change.

The development status of green and low-carbon buildings

Green and low-carbon buildings embody multiple concepts such as "scientific development concept", "people-oriented" and "harmonious society", and are in line with the development requirements of human society. , conforming to the trend of the times. The development status of green and low-carbon buildings in my country can be described as: the future is bright, but the road is bumpy. At present, the promotion of green buildings and low-carbon buildings in China has just started. There are many problems that need to be solved and discussed. Corresponding departments need to be set up to ensure the implementation of policies. I think the concept of low carbon is actually connected with the concept of a conservation-oriented society, which is also in line with the needs of sustainable development in our country. It itself not only refers to building energy conservation, but a concept that integrates energy consumption, environment and other factors. Low carbon mainly refers to reducing the energy consumption of the entire society. Therefore, low carbon is low carbon in the overall environment. Only by realizing low carbon in the entire environment can truly sustainable development be achieved. There is also an urgent need to increase the publicity of low-carbon emission reduction, so that all sectors of society will actively pay attention to green buildings and low-carbon residences, and make green an important part of the lifestyle of every ordinary resident. Only then can we fundamentally promote the development of green residences in our country. process.

The positive factors for the development of green and low-carbon buildings

Mainly reflected in: green and low-carbon buildings have received attention from all walks of life; green and low-carbon building materials have appeared in large quantities; green construction has received attention. All construction units are aware of and have taken relevant actions to control waste gas emissions, dust, noise, construction waste, etc. generated during the construction process, and make rational use of paints, coatings, etc. Some companies have also passed ISO 14001 environmental management standard certification. Through this certification, on the one hand, the management level of the enterprise is improved, and on the other hand, it promotes the construction process to gradually achieve the goals of energy saving, consumption reduction and low pollution.

Disadvantageous factors for the development of green and low-carbon buildings

Mainly reflected in: green and low-carbon buildings have not entered the homes of ordinary people; the initial cost of green and low-carbon buildings is large, but the long-term economic benefits Not obvious. In addition, green and low-carbon buildings often mean that high-rise buildings cannot be built, and the influx of large numbers of people into cities makes high-rise buildings the most economical way.

There is no doubt that green and low-carbon buildings and green and low-carbon concepts have received the attention of people from all walks of life. The essence of green and low-carbon buildings is to fully utilize renewable resources and recycle resources. Its direct effect is to save resources, facilitate the natural cycle of resources, and protect the natural environment and the global environment. However, the concept of green and low-carbon buildings has not yet entered ordinary people. Therefore, the government vigorously promotes the various benefits brought by green and low-carbon buildings, advocates green lifestyles, and strengthens people's green awareness, thereby gradually increasing the market demand for green and low-carbon buildings. Only in this way can various green building talents and design talents emerge, forming an effective cycle.

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