Traditional Culture Encyclopedia - Traditional stories - Talk about the green building energy-saving technology?
Talk about the green building energy-saving technology?
A brief overview of green building
Green building from the essence of the concept mainly contains the following points: (1). Energy saving: energy saving mainly refers to the requirement to reduce the waste of resources in the process of building. (2). Environmental protection: mainly refers to the construction process to reduce environmental pollution, while reducing the emission of carbon dioxide and other pollutants. (3). In the process of design to ensure that the building fully meets the requirements of people's use, to provide people with healthy, comfortable and efficient use of space. Green building from building construction to maintenance to demolition of each link has different environmental requirements, it can be seen, in the construction process must be fully considered at each stage of the environmental factors, the building construction team to minimize the adverse impact on the environment, but also to ensure that the final project is enough to provide people with a comfortable, healthy, environmentally friendly, green space for activities.
Second, at present, China's buildings green building energy-saving technology application problems
In the green building energy-saving design of the building must be in line with the actual situation, pay attention to can not be too much attention to the details and lead to energy-saving means seriously detached from the reality. Because energy saving and emission reduction is fundamentally out of the economic point of view, so the design must be in line with the principle of economy. Now a lot of designers and managers in order to over-perform, in the planning and design of the building is always at all costs to study the new energy-saving methods, the introduction of a large number of energy-saving equipment, although the energy-saving on the effect of seeing, but also wasted a large amount of money, the loss does not outweigh the gain, it may seem to reduce the waste of resources, but from the analysis of the actual efficiency of not necessarily play a role in reducing the waste of the effect. There are also some managers always have the phenomenon of the sick and anxious, no good analysis of the project, just for some of the actual benefits of the analysis, like to invest a lot of money in the building, but the final effect is not ideal. Residential and landscape design green building energy-saving design process must find the bottleneck part, through the improvement of the part to achieve the effect of pulling one hair and moving the whole body, to improve the energy-saving effect of the entire electrical system as a whole. In the process of solving the problem to find the root cause of the problem, such as lighting system bulbs are often burned out phenomenon, is not to replace the bulb on the completion of the work, should find the root cause of the problem, to avoid frequent bulb burning phenomenon in the future.
Third, the practical application of green building energy-saving technology and the need to
1. Ensure that the building layout is reasonable, and effectively reduce resource consumption Usually, after determining the function of the building, the construction scale and the shape of the building, the design of the building shape will always have a great impact on the consumption of resources when you start the formal construction. The traditional construction concept that the shape of the building design and building unit area corresponding to the appearance of the area must be proportional to make the building layout scientific and reasonable, so as to minimize the heating and air-conditioning system of electric power use load. In some large buildings, such as movie theaters, sports venues, schools, etc., the building's external heat generation is much smaller than its internal heat generation, which can be seen in the process of architectural design, to ensure that the building's larger body shape coefficient can better help internal heat dissipation. Put another way, ordinary buildings and large public **** building due to the basic functions and uses are not the same, so that the influence of the building heat generation factors are not the same, so it is necessary to do a good job of the overall layout of the building.
2. Perform the outer envelope insulation, effectively reduce resource consumption winter temperature is low, so it is necessary to carry out the building envelope insulation. This can effectively improve the thermal performance of the building. In the process of construction, used as exterior wall insulation construction materials and its thermal insulation effect is directly proportional to the application of exterior wall insulation can not only reduce the loss of indoor temperature in the winter, but also in the summer to substantially avoid the solar radiation, effectively reducing the air conditioning, fans and other refrigerants some of the work load, can play a completely warm in winter and cool in summer role, greatly enhance the thermal insulation properties of the wall of the building and thermal insulation performance. In reducing the heating pressure and cooling pressure at the same time greatly reduce the consumption of building resources. Practice has proved that improving the thermal performance of exterior wall materials, including wall materials and insulation materials to reduce heat loss is the best means and methods to improve energy efficiency, and can increase indoor comfort.
3. Control of the indoor environment, comprehensive energy saving green building also has a great feature, is the ability to make good use of air treatment systems, natural light systems, natural ventilation systems and many other integrated systems, and at the same time for its multi-faceted and reasonable integration. Different functions are organically combined and perfected in order to minimize resource consumption from the building as a whole. In the comprehensive control of building design, the HVAC system occupies a very important position, especially in the northern region. Generally, it accounts for more than 50 percent of the total energy consumption of the whole, which can be seen, the scientific and reasonable optimization and integration of the building's HVAC system has a very important impact on improving the building's energy-saving performance. The first thing to do is to optimize the design of the HVAC system to ensure that it can be effectively controlled scientifically. From the point of view of the current design of some buildings HVAC system, basically the green building system using centralized control technology is the best energy-saving, the highest energy-saving efficiency of up to about thirty percent.
4. In the process of building construction to fully utilize solar energy resources with the continuous development of science and technology, solar energy has gradually become one of the most important sources of green energy, with inexhaustible, inexhaustible, cheap, clean unique advantages. At present, there are many places where solar energy is mainly utilized in buildings, such as: solar air conditioning, solar water heaters, solar panels, solar lights and so on. Solar energy resources for our country is very rich, and the existence of a very common, China's average annual sunshine hours up to 2500 hours above the region occupies more than half of the territory of our country, as well as some of the perennial high temperature in the region of the sunshine hours up to 3,000 hours, which for the development of China's solar energy resources and the use of the natural conditions to provide a good. So far, for the solar energy utilization process is the biggest problem of energy conversion rate is too low, but another perspective to analyze, with the continuous progress of China's science and technology, in the days to come the development and utilization of solar energy will become more extensive range of energy conversion rate will also be higher and higher.
5. The introduction of water technology, the rational development and utilization of water resources in recent years, China's average annual water resources of 2,812.4 billion cubic meters, the annual per capita water resources possession of 2,200 cubic meters, compared to the world to occupy a quarter of the world's total, it can be seen that China's current water scarcity phenomenon is extremely serious, has been listed as one of the United Nations water resources scarcity of the country. At present, in our daily life for production, washing and other water use 95% are drinking water, water waste phenomenon is extremely serious. Moreover, the treatment requirements for drinking water are particularly high, but the usage only accounts for 5%. After the introduction of water technology will have 95% of non-potable water, such as: production, washing, watering, etc. no longer use drinking water, but also can be treated to ensure that water resources can be recycled. Effectively reduce the waste of drinking water resources, reduce the cost of water treatment, fundamentally realize the purpose of energy saving.
6. The introduction of daylight lighting technology, effectively reducing lighting energy consumption building lighting energy consumption in the building energy consumption occupies a very important position. In some public **** large buildings or business buildings, the power consumed by the building lighting equipment can reach more than thirty percent of the total power consumption of the building. At the same time, lighting equipment in the light of the time will also produce a lot of heat, resulting in some of the need for low-temperature space environment, the passive load of the refrigeration system is seriously increased. Diurnal lighting technology fundamentally refers to the introduction of sunlight into the building, and at the same time in accordance with the relevant standards for the reasonable distribution, to ensure that the improvement of the quality of lighting inside the building, in reducing the consumption of electricity resources at the same time, greatly reducing the degree of environmental pollution. The relevant authoritative data show that: daytime lighting compared to artificial lighting can provide people with a healthier and more exciting living environment, in order to improve the quality of work to provide a strong guarantee. In addition, the daytime lighting applied in the building, but also can effectively change the color and intensity of daylight and people's vision, to help people improve learning efficiency and work efficiency.
Fourth, conclusion
In view of China's current socio-economic development, the effective development, utilization and promotion of green energy-saving technologies in buildings can largely improve the utilization of resources, and further realize the concept of low-carbon, energy-saving and environmentally friendly building construction at the same time as reducing the waste of resources. Right now, China in the green building construction design process there are still many problems, resource scarcity is the first situation, in this industry development context, the promotion of green energy-saving buildings can not be delayed, imperative. The birth of the "green building" design concept is a huge reform of China's contemporary architectural design and system optimization of energy-saving technology, which requires us to build a healthy and comfortable place for people to live, live and work, at the same time, we must pay great attention to environmental pollution, the use of green energy-saving and emission reduction technology to comprehensively improve the utilization rate of resources, while minimizing resource constraints, and at the same time, to promote green energy-saving buildings is urgent and imperative. Utilization rate, while minimizing the degree of pollution to the environment, which is an important task for contemporary architects and urban planners, but also an inevitable development requirements, not at the same time is still our social responsibility to comply with the natural development and social development of human beings must undertake.
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