China is a big country in energy consumption, and its total energy consumption ranks second in the world. However, China has a large population and relatively scarce energy resources, and its per capita energy possession is only 40% of the world average. The energy consumption of buildings in China has accounted for about 30% of the total energy consumption of the whole society. At present, the energy situation in China is quite severe, and it will be difficult to alleviate it for a long time to come, so energy conservation is imminent. If we don't save energy, it will seriously restrict the economic and social development of China. The power shortage in 2004 should be said to have sounded the alarm for each of us. Therefore, in order to make the national economy develop continuously, stably and harmoniously and improve the environmental quality, we must save energy and gradually reverse the serious situation of energy waste.
Second, it is conducive to environmental protection.
With the rapid development of the national economy, the number of air conditioners owned by residents has soared. However, pollutants such as sulfur dioxide and nitrogen oxides produced by air conditioning energy consumption will pollute the air, endanger human health, cause environmental acidification and destroy ecological balance. At the same time, due to the continuous improvement of people's living standards, higher requirements are put forward for the thermal environment of buildings. Building energy conservation can reduce pollutant emissions, reduce air pollution, protect the ecological environment and improve the thermal environment quality of buildings.
Third, it is conducive to improving the quality of life and reducing the cost of family use.
With the rapid and stable development of China's economy and the improvement of people's living standards, the pursuit of comfortable living environment has become an urgent need for people. Due to the adoption of complete sets of energy-saving technical measures, such as properly controlling the building shape coefficient, that is, the ratio of the external area of the building to the closed volume; Adopt new wall materials such as aerated concrete blocks with good thermal insulation performance; Using wall insulation, roof insulation, hollow double-layer glass windows, thermal insulation doors and energy-saving air conditioners, the heat dissipation of the envelope structure is reduced, the thermal environment quality of the building is improved, and the thermal efficiency of the heating system is improved, which not only saves energy, but also reduces the use cost of the house, and residents get benefits.
Take Lvjingyuan, a national demonstration project of comfortable housing, as an example: 62 new technologies, such as external wall and roof insulation materials, hollow double-layer glass plastic windows, solar hot water, solar lighting, radiant floor heating and domestic sewage treatment and reuse, have been adopted in the community, saving a lot of hydropower resources.
1. According to the sampling survey of residents in the residential area, the heating period of the residential building with building insulation materials is two months shorter than that of the residential building without external insulation materials, and the daily operation cycle is short, with less energy consumption and energy saving of more than 30%.
2. Use a solar water heater. With solar energy as the main heat collection, supplemented by electric heating, hot water can be supplied 365 days a year, which can ensure the normal use of a family of three. The average annual power saving is about 860kw, which can save more than 400 yuan.
3. Solar lighting ensures the normal use of courtyard lights and lawn lights in the community, which is not only environmentally friendly and energy-saving, but also beautifies the community environment. Installing 20 solar garden lights, 66 lawn lights, and decorative lights 16, with a total power 1059WP, can save about 30,000 yuan in electricity and maintenance costs for the community every year.
4. Radiant floor heating has the characteristics of comfortable and energy-saving floor heating in winter, convenient air conditioning adjustment in summer, good heat storage and environmental protection. According to calculation, it saves energy by 20%-30% compared with traditional heating methods.
5. The domestic sewage treatment station is fully automatic, with no noise and odor, and an ecological constructed wetland with beautiful scenery has been formed in the community. 50 tons of sewage is treated every day, which can be used for community sprinkler irrigation, landscape and road washing, saving 6.5438+0.8 million tons of water every year.
6. Ordinary houses have high energy consumption, hot and humid in summer, wet and cold in winter, and poor comfort. Lvjingyuan adopts special wall, which is both heat preservation and heat insulation. In summer, the indoor temperature is about 2 to 3 degrees Celsius lower than that of ordinary buildings, and in winter, the indoor temperature is more than 4 degrees Celsius higher than that of ordinary buildings.
7. The comprehensive benefits are obvious. The cost of residential buildings is about 3% higher than that of ordinary buildings, but due to energy saving and optimal combination, the annual operating expenses can be saved by more than 50%.
The advantage of energy-saving buildings is one-time expenditure and lifelong benefit.
There is only one earth, and the energy is limited. Each of us should establish a new outlook on life, cherish our living space, build our society into an energy-saving society, and let energy-saving penetrate into people's living habits and become a way of life. Let us developers and consumers establish a new energy-saving concept, improve the thermal insulation performance of buildings by adopting energy-saving building structures, materials, machinery and products, reduce the energy consumption of heating, ventilation, refrigeration and lighting, and let people live in houses with high comfort and low energy consumption, which are warm in winter and cool in summer.