Energy saving building materials, environmental protection and green

The concept of "energy-saving housing" is being mentioned by more and more people. What is energy-saving housing? What is closely related to energy-saving housing? Energy saving in heating, air conditioning, hot water supply, cooking, lighting, household appliances and other aspects are closely related. Energy saving housing is beneficial to improve the quality of life and the living environment. It is also the development trend of the future housing, and has been widely concerned by the public? Why can we save energy?

Thermal insulation: new building materials and technologies are usually used in energy-saving residential buildings to comprehensively insulate the external walls and sloping roofs in the East, West, North and south. Most of the wall materials used in ordinary buildings are reinforced concrete and concrete hollow blocks, which are difficult to meet the requirements of high thermal insulation and thermal insulation, and can not meet the standards of energy-saving buildings. And the use of energy-saving and environmental protection of new building materials can make the house comfortable insulation. According to the different position of thermal insulation material in the wall, it can be divided into external insulation, internal insulation and medium insulation.

External wall insulation: the external insulation technology will compound the thermal insulation materials on the outside of the load-bearing wall, so that the thermal stability of the building is improved, and the time of using air conditioning in the family will be greatly reduced. At present, the commonly used external wall insulation building materials in the market are more diverse, such as polystyrene board, foam mortar, etc., and the foam mortar is the mixture of plastic foam particles and cement mortar. In terms of construction technology, the thermal insulation treatment of residential exterior wall often needs five or six processes to complete. Some buildings use fly ash hollow block and rock wool board as external insulation wall to reduce heat transfer coefficient. The application of energy-saving technology of external wall thermal insulation can not only ensure that the house is warm in winter and cool in summer, isolate noise, but also reduce the cracks and water seepage caused by structural temperature difference, and improve the service life of the structure. At the same time, it does not occupy the interior space and is conducive to the renovation of old houses.

Energy saving: the use of double breathing curtain wall technology can also make the building effective energy saving. The main function of the technology and facilities is that the air outlet is closed in winter, the temperature will be higher than outdoor, and the heat loss can be reduced by 30%; in summer, when the air outlet is opened, the cold air enters the double curtain wall from the air inlet for heat exchange, and the hot air is discharged from the air outlet, which can effectively reduce energy consumption.

Heat insulation: the heat insulation of windows is mainly to install insulating glass. Insulating glass has advantages and disadvantages. It is indispensable to adopt "bridge breaking" technology, that is, elastic buffering treatment is carried out between glass and window frame to achieve sealing effect, which can effectively reduce the power consumption of air conditioning for heating in winter and cooling in summer. The insulation and sound insulation effect of hollow window without using "broken bridge" technology will be greatly reduced. The installation of the shutter can also block the direct radiation of summer sunshine and diffuse radiation, and reduce the cooling load. In an energy-saving residential project in Shanghai, the energy-saving rate of the envelope can reach more than 30% due to the use of EPS external insulation system and energy-saving doors and windows, such as Low-E glass. In other words, the total energy saving rate of residential buildings can reach about 55%.