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Polyurethane insulation pipe promotes building energy conservation

facing the increasing tension of global energy, countries all over the world, especially the developed countries in Europe and the United States, have paid full attention to energy-saving technology. In the past 30 years, many countries have done a lot of work in building design and construction, the development and application of new building polyurethane insulation pipes, building 2, the use of concrete pressure testing machines, the formulation and implementation of energy-saving regulations, the certification and management of building energy-saving products, etc., which not only saves a lot of energy and achieves considerable economic benefits, but also improves the environment and reduces the damage of polyurethane insulation pipes to the atmospheric ozone layer. However, the work of building energy conservation in China has just started in the early 1990s. Therefore, the development of building energy conservation and polyurethane insulation pipe in foreign countries can be used as a reference for our work in this field. Now we briefly introduce the utilization of foreign building energy conservation and polyurethane insulation pipe in building energy conservation. BVB sublime matrix has undergone strict testing

since the global energy crisis occurred in the 1970s, governments around the world have made a comprehensive and practical analysis of the utilization of energy. Diagnosing building energy consumption is an important part, and they agreed that it is necessary to formulate energy-saving standards for building design and put forward regulations for implementation. So countries have established their own building energy efficiency standards

in 1975, the United States issued ASHRAE (American Association of heating, refrigeration and Air Conditioning Engineers) standards for the first time. New building design energy conservation. On this basis, in December 1977, the official promulgated the energy-saving regulations in the new building structure, and received obvious energy-saving effects in 45 states. The national energy administration, the Bureau of standards and the national building regulations and Standards conference have constantly put forward new contents in building energy efficiency design, and revised ASHRAE standards every five years

as early as 1979, the Japanese housing finance public treasury issued the thermal insulation standard for residential buildings, stipulated the thermal resistance of the building part, and stipulated the minimum limit for all kinds of polyurethane insulation pipes used

some foreign developed countries have begun the work of building energy conservation as early as the late 1970s, forcing the construction industry to implement energy-saving standards in new buildings, which has achieved great results, and the building consumption of the whole country has decreased significantly. For example, the heating area in Denmark increased by 30 in 1985 compared with that in 1972, but the building energy consumption of heating energy decreased by 3.18 million tons of standard coal, and the proportion of heating energy consumption in the national total energy consumption also decreased from 39 to 28; Since the United States formulated and adopted an energy-saving standard, it has saved another $43billion by 2011 alone. This shows how remarkable social and economic benefits have been achieved by foreign building energy efficiency regulations for more than 30 years

building materials are the most basic 0.5% condition for building energy conservation. A large number of new building materials and polyurethane insulation pipes have been used in buildings in various countries. Solid bricks have been generally replaced by hollow blocks and porous bricks. In order to improve the thermal insulation performance of the wall, the air flow in the hollow channel formed between the blocks should be separated, and the gaps should be filled with expanded perlite, loose glass wool or loose mineral wool and other loosely filled thermal insulation polyurethane insulation pipes

in the building envelope, whether commercial or civil buildings, one adopts lightweight and efficient polyurethane insulation pipes such as glass wool, rock wool, foam plastic, etc. There are basically three forms of wall insulation: insulation, external insulation and sandwich insulation. The wall structure of residential buildings is basically old. The outermost layer is a wooden or plastic wallboard, followed by a layer of hard foam plastic. Inside is the standard main rest of the wall, wood frame structure, etc. Another typical wall structure is that the cavity of hollow block or hollow masonry wall is filled tightly, which can also play a good role in heat preservation

the roofs of foreign civil buildings generally adopt spires. The attic space with spires is equipped with air circulation channels immediately below the roof, which can not only solve the circulation of air, but also play a certain role in thermal insulation

at the same time, glass wool or mineral wool blankets and mats are generally laid on the ceiling, or loose insulation cotton is directly blown into this space, and some ceiling made of polyurethane insulation pipes such as glass wool or rock wool and decorative veneers are directly hoisted

most foreign buildings have aboveground rooms and underground spaces. The floors of living and activity spaces are not directly exposed to the external environment, which provides more discounts for direct sales of living space manufacturers! The insulation of the room creates powerful conditions. However, if the basement and underground space are not heating space, especially in winter, there will still be a considerable amount of heat transmitted through the floor on the first floor. Therefore, under the ground floor of the building, it is still necessary to fill high-density polyurethane insulation pipes. At the same time, rigid and semi-rigid polyurethane insulation pipes with a certain thickness are laid between the concrete floor of the basement and the foundation and the soil

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