With the increasing public awareness of environmental protection, many capital construction developers have used a variety of advanced residential facilities with energy-saving and environmental protection functions in house construction in order to achieve the goal of green building and reducing the emission of carbon dioxide. It is reported that the more advanced buildings in Beijing are fresh air system, low-e glass, ground source heat pump system and so on. So these advanced facilities are what energy-saving environmental protection? Ordinary people at home can learn and use it? External wall insulation replacement fresh air system allows the room always have fresh air At present, many energy-saving buildings in Beijing, are Using a replacement fresh air system, the system's role is to allow the house without opening the window can also maintain the exchange of fresh air and indoor air, air conditioning without opening the case can also maintain a comfortable temperature. According to Feng Shang International Real Estate Development Company, Zhang Zedong, introduced the replacement of fresh air system is the use of the next air supply on the return air way through a set of air heat exchange device, the outlet temperature control is always below the room temperature 2 ℃ To 3 ℃, the return air outlet through the negative pressure function of the system to indoor turbid air discharge. In this room, fresh air that makes the human body comfortable comes from below. According to Sun Ke Fang, deputy chief engineer of the Center for Housing Industrialization of the Ministry of Construction, tenants of ordinary traditional residential quarters can also install fresh air systems themselves, but two problems must be considered. First, it is necessary to consider whether there is ceiling suspended space for the location of the air duct, because the air duct should be arranged in a large area at the top of the building, and the pipeline will occupy a certain height, thus reducing the height of the floor. Generally consider the 20-30 Cm height. Second, we must also consider whether there is a residential air-channel mouth. In addition, many consumers may be more concerned about the price of self-installed fresh air system. According to reporters in the market learned that a 100-square-meter residential installation of a fresh air system needs about 10,000 yuan. Low-E coated glass prevents thermal radiation from entering and leaving houses Low-e glass, also known as low-E coated glass, is named for its extremely low surface emissivity. So, what are the benefits of low radiation and coating in our home? In winter, the thermal radiation emitted by low-e glass to indoor heating and indoor objects can be like a heat mirror, Part of the heat reflected back to the interior, to ensure that indoor heat is not lost to the outside, thus saving heating costs. In summer, it can prevent the outdoor ground, heat radiation emitted by the building into the room, to achieve the purpose of saving air conditioning and refrigeration costs. In addition, another benefit of reducing indoor heat loss during the winter is environmental protection. Building heating caused by emissions of harmful gases such as carbon dioxide is an important source of pollution. If Low-e glass is used, the emission of harmful gases can be reduced significantly due to the reduction of heat loss due to the fuel consumed by heating. Exterior insulation materials According to Sun Ke Fang introduced, if your home is a traditional building, you want to transform the original ordinary glass there are two ways. First, users can choose energy-saving window film. At present, the energy-saving and safety glass film sold on the market can be affixed to the ordinary glass surface from the interior of the house to achieve the features of thermal insulation, energy saving, explosion-proof and ultraviolet protection by changing the physical properties of common glass. The cost is generally 100-300 yuan / square meters. Second, the user can replace all ordinary glass low-e glass. However, this method is more time-consuming, larger quantities, and the relative foil method costs are relatively expensive, 700-1000 yuan / square meter. Ground source heat pump system allows exhaust heat to cool the housing Beijing University of heat transfer and energy-saving Key Laboratory of Professor Wu Yuting told reporters that ground-source heat pump works and air-conditioning works are the same, a The heat pump organization consists of three components, compressor, condenser and evaporator. Professor Wu Yuting briefly introduced the working principle of the heat pump organization in the summer: "The summer room to be refrigerated, the evaporator absorbs the heat of the room, then, the liquid in the condenser turns into gas, and the evaporation process of the gas is the process of absorbing heat After that, the compressor compresses the gas and the process of compression is the process of temperature increase. Finally, the unit discharges the heated gas into the soil of a depth of 100 meters to achieve the cooling effect in the room. The system is generally understood that the heating and cooling is the use of water and soil for cold and heat exchange, the winter heat to the soil "take" out for indoor heating; summer to indoor heat "take" out into the soil to reach the refrigeration effect. However, whether it is to "take out" the underground heat or "send" the indoor heat, it is necessary to go through special installations that go deeper into the ground more than 100 meters or even hundreds of meters. Sun Ke Fang told reporters that the current ordinary residential can not complete this transformation, if you need to transform developers need to start work, study the terrain, the depth of buried devices to test a series of projects. "Although the project is large, but the ground-source heat pump system without emissions of carbon dioxide and other gas, without the cost of natural gas, coal resources, energy saving and environmental protection from this perspective, we recommend developers to transform for the benefit of future generations."
