Central air conditioning is used for ventilation of residential and commercial premises to create more comfortable conditions for work and life. This conditioner is a frame-panel system, supplied with cold heat and electricity. Also, central air conditioner can clean and moisten the air and the ventilation system. The purified air is distributed evenly throughout the room with the air duct system. Similar conditioner may serve as one large room and several smaller ones.

In fact, one air conditioner to cope with the room equal to the square huge production plant or the stadium. In addition, if necessary set some of these devices. Conditioner consists of sections that are intended for heating, cooling, mixing, drying, humidification, movement control and air purification. And you can freely combined. You can split air conditioners for seasonal and year-round. The power conditioning devices are divided into low, medium and high pressure, according to the method of execution are divided into internal and external, Suspended and fixed. In addition, central air conditioners can be divided into direct-flow, with recirculation and heat recovery.

Straight-through air conditioners are treated outside air only, air-conditioning with recirculation treated with a mixture of outdoor air and exhaust air. Air conditioning with recirculation consists of a mixing chamber which delivers variable amounts of fresh and recirculated air. In the air conditioning system with co-current and heat recovery, heat is transferred from the exhaust air to the outside. Recycling technologies and waste heat recovery saves energy costs of heat, especially when it comes to the cold season. If technological features vented not allow the use of recycling, in such cases, the direct-flow scheme is used the air conditioner. Central air conditioning stands out air treatment systems, one big advantage – he is able to maintain an optimum temperature, humidity and the desired mobility of air masses even in rooms with giant squares. To install the system does not need the fan coil units. On the other hand, the system is not without flaws. First, the installation work are quite complex in its process. Secondly, it will take quite a lot of time. Third, this will attract skilled workers.

September 21, 1970 to 75 days ahead of schedule the refinery reported the completion of the program 8th Five Year Plan. Were exceeded substantially all of the major technical and economic indicators. These successes have created favorable conditions for improving material welfare of workers, creating a wide range of social infrastructure. Beginning with the third quarter of 1967, the refinery has been awarded 12 times in a row and the first places of the Red Banner of the Council of Ministers and the Trade Unions, and up to socialist competition in honor of the birthday 100letiya Lenin awarded the Lenin Jubilee Certificate of Honour of the CC CPSU, the Presidium of the Supreme Soviet of the USSR Council of Ministers and the All. In July 1970 the Voronezh plant reinforced concrete N 2 became a leading factory industrial association 'The Thief of nezhselst swarm design.

" It consists of three plants: in ZHBI1 g.GeorgiuDezh (Liska), a ZHBI3 g.Borisoglebske and plant of expanded clay gravel g.Buturlinovke. To be fair, that zavodyfilialy had a modest performance. With the establishment of industrial associations, efforts of the parent company to provide consistent and comprehensive care wards soon overcame the lag and the following year made rhythmic profitable operation. From 1956 to 1970 was for a period of formation of the plant ZHBI2, approval at the forefront of the industry construction industry. In late 1973, they were stopped on the reconstruction of two spans of the molding shop N 2 on this site should be a new technological line for production of agricultural products for the residential home the 25th series.

This was of crucial importance as a turning point for the large-block housing in rural areas. 1983 will remain memorable in the history of the plant milestone, when the decision on unification 'Voronezhselstroy', in structure which consisted of plant, it was split. Workshop panel construction of the plant was transferred into the rural house-building plant. For example, in 19921993's commercial production predvaritelnonapryazhennyh light poles SV105, SV110, are in high demand. Start of production of prefabricated components and wells networks in sets of diameter 1000, 1500 and 2000 mm. In 1994 he started production of slabs of length 7.2 m, including width of 1200 and 1500 mm. Compared with the previous year 1995 ended with an increase in plant production levels, which was in our uncertain times quite rare. Thus, the production of precast concrete was 113.6%, ready-mixed concrete 265.2% 132.8% commercial solution. 3.2% reinforced concrete factory