1. Establish and improve the system of building energy-saving policies and regulations. On behalf of the State Council, draft the Decision on Strengthening Building Energy Efficiency, and establish a building energy efficiency policy system with economic incentive policy as the main body; Actively promote the reform of heating system; Establish a system of laws and regulations on building energy efficiency with "Regulations on Building Energy Efficiency Management in the State Council" as the main body; Accelerate the preparation of building energy-saving design and completion acceptance standards.

3. Establish an effective administrative supervision system for building energy conservation and an efficient working system. Strengthen the market supervision of the implementation of building energy efficiency standards in the design and construction of civil construction projects; Establish an energy passport system to record the implementation of energy-saving standards during the design, construction and completion of new buildings in the passport.

3. Improve the technical support system for building energy conservation. Strengthen the research and development of key technologies for building energy efficiency, focusing on the development of complete sets of energy-saving technologies for building envelope and efficient heating and cooling systems; Energy-saving transformation and application technology of existing buildings; Integrated application technology of solar energy and building; Heating and cooling technology of renewable energy; Develop building thermal performance testing technology and building energy consumption calculation and analysis software, and establish building energy consumption statistics system.

4. Establish an international cooperation system with smooth channels and prominent focus. Make full use of international resources, strengthen capacity building, and constantly improve the technical and management level of building energy conservation and resource conservation in China's construction field. On the basis of existing projects, we will continue to expand cooperation areas, launch new cooperation projects in an all-round way, track the development trends of science and technology in the fields of building energy saving, green building, water saving, land saving, material saving, sewage treatment and reuse, public transportation, garbage recycling, historical and cultural cities and scenic resources protection, and gradually narrow the gap between China and the world's advanced level.

5. Gradually form a green construction system. Taking building energy conservation as a breakthrough, we will comprehensively promote building energy conservation, gradually form a building model characterized by green buildings, and promote the sustainable development of urban and rural construction, including a sustainable urban infrastructure service supply system.

Building energy conservation begins with external wall insulation. In buildings, the heat loss of the envelope is great, and the wall accounts for a large share in the envelope. Therefore, the reform of building wall and the development of wall energy-saving technology are the most important links of building energy-saving technology, while the development of external wall insulation technology and energy-saving materials is the main way to realize building energy-saving.

External wall thermal insulation technology originated in Europe, and began to be piloted in China in the mid-1980s, and was widely used in the construction field. However, at present, the level of building energy conservation in China is far lower than that in developed countries, and the energy consumption per unit area of buildings in China is still 3 ~ 5 times that in developed countries with similar climate. Therefore, building energy conservation is still an important issue for China's construction industry in this century. In recent years, with the deepening of energy-saving work and the continuous improvement of energy-saving standards in residential buildings in China, many new energy-saving technologies and materials have been introduced and developed, and have been widely used in residential buildings. Among them, all kinds of foam plastic insulation materials used for external wall insulation, such as Canada Anjianneng insulation system? Its excellent comprehensive performance attracts people's attention.

Favorable factors of popularizing external wall thermal insulation system.

High-level insulation of building envelope with new technology is the main measure of building energy saving, and the insulation function of external wall insulation system is the key technology of building energy saving. This technology can effectively solve the problem of energy loss caused by indoor and outdoor temperature difference in winter and summer in China, and represents the development direction of energy saving and thermal insulation technology in China. The system integrates thermal insulation, waterproof and decorative functions, and is suitable for new industrial and civil buildings and energy-saving renovation of old buildings.

According to experts, compared with other building energy-saving technologies, external wall insulation will not produce "hot bridge" and "cold bridge" phenomena, and has a good building energy-saving effect. In winter, when the indoor heat passes through the wall insulation material, it will be isolated and preserved. When the indoor temperature drops, it will release the heat in the wall and adjust the indoor temperature. In summer, the external thermal insulation of the external wall will also prevent solar radiation and external heat from entering the room, so that the indoor environment of the building is "warm in winter and cool in summer", and the four seasons are pleasant, and the indoor environment and physical properties of the building are obviously improved. At the same time, the external insulation of the external wall can also protect the main structure. The external thermal insulation material is placed outside the main structure, which reduces the influence of external temperature, humidity and various rays on the main structure. Under the repeated action of high temperature in summer and low temperature in winter, cracks often occur in the main building due to thermal expansion and cold contraction, shortening its service life, but external thermal insulation of the external wall can minimize this adverse effect.

External wall thermal insulation technology has also shown a very convenient and quick advantage in the reconstruction of the facade of the old house. External thermal insulation can be reformed centrally without indoor construction, which will not affect the normal work and life of indoor residents. In addition, in the external wall thermal insulation technology, thermal insulation materials are placed outside the main structure, saving indoor space and effectively increasing the use area.

It is imperative to develop new building insulation materials.

At present, China's external wall thermal insulation technology is developing rapidly, which is the focus of energy-saving work. The development of external wall thermal insulation technology is inseparable from the innovation of energy-saving materials. Building energy conservation must be based on the development of new energy-saving materials and adequate thermal insulation materials. The development of energy-saving materials must be combined with external wall insulation technology in order to really play its role. It is precisely because of the continuous innovation of energy-saving materials that people pay more and more attention to the advantages of external wall insulation technology. According to the analysis of experts in the industry, all kinds of foam plastics will be the main body of developing new building insulation technologies and materials in China. While vigorously promoting external wall thermal insulation technology, we should strengthen the development and utilization of new energy-saving materials to truly realize building energy conservation.

Why can Anjian realize building energy saving?

Let's take the new American residence in 2005 as an example, and use REM/Rate computer simulation method to calculate the traditional glass wool thermal insulation and healthy energy thermal insulation system? Energy costs consumed each year.

Glass wool thermal insulation material An Jian neng thermal insulation system?

The building area is 5900 square feet (548 square meters).

Wall insulation R- 19 R- 1 1

Roof or attic insulation material R-38 R- 18

The ventilation volume (Achnat) is 0.7 0.1.

Heating equipment 80.0kbtu/hr70.0kbtu/hr.

Refrigeration equipment 10 ton 6 ton

Mechanical ventilation, yes, yes.

Power consumption is 0.08 USD/kWh.

Thermal energy consumption is $0.5/heat.

Conclusion:

Annual heating cost is $65,438+$096.00 $65,438+$033.00.

The annual cooling cost is $65,438+$0082.00 and $547.00.

$ 1278.00 $680.00

Use an canon? The annual energy cost of thermal insulation materials is only 53% of that of glass wool thermal insulation materials.

The actual project proves that Anjian can be used in areas with more refrigeration requirements (hot weather and high humidity). The application of this technology can reduce the load of building heating and cooling air conditioning equipment by 30-50%, thus greatly reducing the purchase cost and operation cost of heating and cooling air conditioning equipment. This cost saving is more obvious in cold areas (which need heating).

China's building energy consumption in 200 1 year reached 376 million tons of standard coal. Reducing building energy consumption has become a top priority in the construction field. An Jian neng insulation system? It can greatly reduce the energy consumption of buildings. This is not only because of its good thermal conductivity, but also because of its excellent air tightness, which helps to reduce the energy consumption of buildings.

According to the survey of American Association of HVAC Engineers, 30-40% of energy in buildings is lost through cracks in buildings. Therefore, it is very important to control air infiltration. Although the traditional fiber insulation materials such as glass wool and mineral wool have good thermal conductivity, they cannot control the air infiltration. The air permeability of buildings using glass fiber insulation materials is about 5-8 Pascal (ACH@50), while Amgen? The maximum air permeability of thermal insulation building is only 1.5 Pascal (ACH@50). Mingming, An Jianneng? The insulation layer can well control the air infiltration and greatly save energy.

In the Canadian Bureau, 90 miles north of Manetho, there lived a Mr. John who was very dissatisfied with the high heating cost and unstable indoor temperature. Its house covers an area of 2,236 square feet, and adopts heat recovery electric heating air conditioning system and mechanical ventilation. This house is only used on weekends and holidays. At other times, the air conditioner temperature control switch is set at 10℃(50℉). The roof of the house is a web roof truss filled with 6-inch (15mm) glass wool as insulation layer, which has been used for 3 years. After investigation, Mr. John decided to switch to Anjianneng thermal insulation system? .

The adopted scheme is as follows:

A. Remove the glass wool insulation inside and on both sides of the roof (1660 square feet). The owner requested to re-lay the insulation layer and seal the ceiling, so that the warm and humid air in the indoor area could stay indoors.

B. spray R-20(5.5 ",140mm) an canon? Thermal insulation material:

Inside the roof-corner of the roof-vent at the lower end of the seal-vent at the corner of the roof of the seal

C the attic covers an area of about 576 square feet and still uses the original glass wool insulation layer.

Comparison:

1999 September 2000-September 2000

Glass wool anjian energy insulation system?

Heating days * 307 1 34 1

Kwh14,54011,170

(* The number of heating days refers to the total degree that the average daily temperature is 65℉( 18.3℃) lower than the basic temperature, provided by Environment Canada).