Who can tell me the full text link of the latest energy-saving design standard for residential buildings?

What kind of house is an energy-saving house?

Choose a house with external wall insulation.

In ordinary houses, 30% of energy in heating in winter and cooling in summer is not used by human body, but radiated to the outside through windows and walls, which increases the heat island effect and wastes energy.

At present, the wall of energy-saving buildings in the world adopts external thermal insulation technology, and the buildings in China are also changing from traditional internal thermal insulation to external thermal insulation. The external thermal insulation wall is composed of a considerable thickness of insulation board and a flowing air layer in the middle of the wall, so it can effectively achieve thermal insulation. At present, the walls and floors of some energy-saving houses are ceramsite concrete, which has better sound and heat insulation effect than ordinary concrete. In a house with external insulation wall in hot summer and cold winter, expensive air conditioning and heating costs can be saved. When buying a house, you should consult whether the wall of the building adopts external insulation technology. At present, less than 1/3 of the houses in the real estate market of big cities have adopted external thermal insulation wall technology.

Some energy-saving buildings in Beijing use water circulation system to adjust indoor temperature, and the effect is also very good.

In addition, we should also consider the sun protection of the house, depending on whether the window facing the sun has sun protection.

The national basic standards for the design and construction of green ecological residential quarters require that various effective energy-saving measures be taken to improve the thermal performance of buildings, external walls, roofs, doors and windows on the basis of ensuring a comfortable and healthy indoor thermal environment. The thermal conductivity should be reduced below 0.6.

It is necessary to have a large width and a small depth.

Narrow width and large depth are important means for many developers to save land resources and increase profits, but such a house will inevitably sacrifice the lighting of some rooms.

In fact, under the design of modern building technology, both the banlou and the tower can be ventilated, but the north-south banlou can achieve the best energy-saving effect. If you choose a banlou, you must choose a house with a large width and a small depth. This house has good lighting, and there is no "darkroom", which can maximize ventilation. For example, Aobei Garden, a pilot project of national healthy housing, and Wanguocheng, a contemporary building, all adopted the design of large area, large width and small depth. The living room of contemporary countries is more than 4 meters wide, which can not only ensure the distance between TV and human body, but also reduce the harm of electromagnetic radiation to human body. The demand for living room furniture is also considered, and the width of the bedroom is more than 3 meters.

There should be a bright hall and a bright bedroom, as well as a bright kitchen and a bright bathroom.

Energy-saving houses use natural light as much as possible, thus greatly saving electricity. At present, there are always some rooms in some houses that need to be turned on during the day, and sometimes there are more kitchens and bathrooms in the corner farthest from the light source in the living room, which seems to be a common problem in traditional houses. Designers of modern energy-saving houses often skillfully arrange the living room, bedroom, kitchen and even bathroom around the rectangular general plane, which not only eliminates the "darkroom", but also minimizes the rooms facing north, so that all rooms can enjoy the bright sunshine.

Kitchen and bathroom are places where bacteria are easy to gather. Now many residential kitchens and bathrooms are designed in the depths of the house, and the only ventilation place in some bathrooms is the door facing the bedroom. A room where moisture and smell can't disperse will bring health risks. Moreover, black kitchens and black doormen also need to turn on the lights during the day, which costs a lot of electricity every year. Choose Ming Chef and Wei Ming, let the sunshine and breeze make these two rooms which are most prone to dirty and damp clean and dry, and do housework in bright light to keep a good mood all day.

Choose energy-saving glass windows

The glass windows of ordinary houses are made of ordinary glass. Although the cost is cheap, the insulation effect is poor. Choosing high-quality glass can stabilize the indoor temperature. At present, energy-saving glass has hollow coated glass, which has double heat and sound insulation functions, and the thickness of hollow layer is 12mm. This kind of glass will not feel obvious climate change when sitting in front of the window all the year round, and it is an ideal energy-saving glass. Of course, there are other energy-saving glasses with good quality. Consumers should carefully read the loushu and field experience to choose the real energy-saving glass.

Proper wall-to-window ratio is very important.

French windows are popular now, and many new houses have large window areas. Experts believe that fashion sometimes goes against science. Too many windows go against the idea of energy-saving buildings.

Glass is generally less effective than wall insulation, and people who have a sun room at home have a common feeling: the temperature difference here changes greatly, and it is uncomfortable to stay for a long time.

From the perspective of thermal insulation performance, it is more comfortable to choose a house with suitable windows than a house with large French windows. As for good lighting, there is actually a "degree". The brighter the room, the better. Too bright a sun room is not suitable for the elderly and children. My eyes are uncomfortable and my mind is unstable. Most importantly, opening a big window will cost you a lot more money for air conditioning and heating.

If you must choose French windows, it depends on whether the window glass is hollow or multi-layer high-quality glass. At present, many residential windows use energy-saving high-quality glass, and its heat transfer coefficient is lower than that of ordinary glass, thus increasing indoor comfort. The energy efficiency of new buildings in Beijing has new regulations on the ratio of wall to window. So the bigger the window, the better.

The fresh air system keeps the air fresh.

Because the air quality in the city is not good now, opening the window for a long time often allows harmful gases to enter the room. Sometimes because the house is close to the main traffic line, there will be traffic noise when opening the window. Indoor fresh air system can solve the problem of closing windows and making indoor air fresh. The fresh air system adopts air conversion system, which can filter the outdoor fresh air and introduce it indoors, which is often better than window opening. Because there are few windows, the room temperature is unlikely to change.

Lightweight exterior walls are more energy efficient.

Scientific research has proved that the heavier the color, the easier it is to absorb heat. In order to stand out, some buildings choose extremely bright colors, which makes the room temperature easy to rise. So choosing a light-colored house is more energy-efficient.

The green area should be larger.

When buying a house, it depends on whether there are too many cement pavements on the roads in the community. Too many cement pavements will form a "cement desert" in the real estate, resulting in a heat island effect. Tests show that when the sun is strong and the temperature reaches 33 degrees Celsius, the surface temperature of many buildings reaches more than 45 degrees Celsius.

China's newly promulgated residential greening standards require that the green area of residential areas should not be less than 35%, and there should be different degrees of plant greening, so attention should be paid when looking at the house.

It is best to install a solar water heater.

Using solar water heaters can save you thousands of dollars in electricity every year, so you'd better choose a house that allows the use of solar water heaters. If you choose the top floor, the installation is generally no problem. Otherwise, it is necessary to communicate with the property company in advance to see if the property company in this community will interfere with the owners who want to install solar water heaters. This has happened in many communities. However, it is best to choose a flat-topped building to install solar water heaters, and the spire building is very troublesome to install. Due to the urgent task of building energy conservation in China, real estate developers with cutting-edge awareness have begun to develop houses with integrated design of solar water heaters and buildings, but at present, this is only a few buildings.

Reclaimed water facilities can not be ignored

Some energy-saving developers have established reclaimed water treatment systems in newly-built residential areas. The benefits of recycling water are very obvious, which not only protects water resources, but also reduces property fees. Beijing Beiluchun Community uses reclaimed water to irrigate green space, which makes the property fee of the community significantly lower than that of other communities.

Choosing an energy-saving house is cost-effective.

Energy-saving houses may be more expensive than ordinary houses, but they are still cost-effective in the long run. For example, for two rooms with a building area of 16 square meters, air conditioning is turned on 24 hours at the same time. The building with energy-saving measures uses about 5 degrees less electricity than the general building, and the insulation effect is doubled. Based on a 100 square meter residence, if the electricity consumption of air conditioners can be saved by about 2600 kwh a year, it can be saved by about 1700 yuan a year.

Related links

China's building energy consumption is three times that of developed countries.

Of the 40 billion square meters of housing in China, less than 3% are energy-efficient housing. China is a big energy consuming country, and the waste of building energy is more prominent. Building energy consumption accounts for 25% of the total energy consumption of the whole society, of which heating, air conditioning and lighting account for 14%, and building construction energy consumption is 1 1%. In 200 1 year, China used 376 million tons of standard coal for air conditioning in summer and heating in winter, accounting for 27.8% of the total energy consumption of the whole society. At present, the energy consumption of heating areas in China is about three times that of developed countries in Europe and America under the same conditions. The gap with foreign advanced level is not in technology, but in the implementation of design standards and standards.

The cost of energy-saving housing will not be very high.

Fang Zhanhe, vice chairman of the Building Energy Conservation Committee of China Construction Industry Association, said that building energy conservation has reached 65% of the national standard and will not cause a substantial increase in construction costs. While increasing the insulation cost of building envelope system, it will reduce the cost of heating system. The building improves the thermal insulation performance of the envelope system, so it can reduce the design capacity of heat source, pipeline and heat exchanger of the heating system, and the indoor temperature of the external thermal insulation wall is easier to maintain. According to the design and calculation of the pilot project, the cost of the enclosure system per square meter of construction area has increased by 50 yuan, accounting for 5% of the civil construction cost; The heating system cost is reduced by 40 yuan, which is 18% of the heating system cost. After the offset, the construction cost per square meter only increased by 65,438+00 yuan, with an increase rate of 65,438+0%.