Fresh air

If you breathe in horrible, you can move away to another world much earlier than the allotted time. Air "cocktail" of most major cities in excess contains sulfur dioxide, carbon monoxide, various lead compounds and heavy metals, and just ordinary dust. Danger fraught with many construction materials, of which the following construction of the house - they can become a source of radon and asbestos. In addition, detergents, cleansers and other household chemicals are also not ideal in terms of ecology, as a supplier of ammonia, hydrogen sulfide and other toxic substances. That is why the vast majority of residential and office buildings provided the ventilation system. However, over time, dust, airborne dust and vapors are deposited on the surface of the duct, creating a breeding ground for bacteria and impeding the work of the ventilation system. If air movement is due to a natural draft, the result will be a gradual reduction of inflow and exhaust, even to complete blockage of the ventilation duct. The time saves only the fact that some ducts made in the building performance, have a decent section. The situation is worse in systems with artificial inducement, in other words, equipped with a fan. Air capacity of such systems is much higher, and therefore clogging the system is much faster. In addition, "crystallization point" of dust are different components and assemblies such as fans, heat exchangers, humidifiers, valves, and the lattice. The problem here is overgrown with all sorts of rubbish duct has one very nasty side. As a result, a sharp increase in resistance of the system fan does not give the design performance. In addition, with an increase in dust and grease on the working parts, it begins to work overload, heated, and eventually fails. In practice, many times there were occasions when the customer managed several times to change the equipment, penyaya quality engineering, electrics and misuse, until finally it became clear the real reason. Everything else, sat down in the air duct dust is terrible danger during the fire. It ignites like cotton, and due to air flow flames immediately spread throughout the building. Since cigarette thrown into the ventilation system working, spending the roof repair, has led to burn several floors in one of the ministries. Even more dangerous fat deposits, which are inevitable in ventilation cafes, restaurants, meat processing plants and other food industries. Deposited on the walls of the ducts jelly-like mass is not only hinders the movement of air and well lit, but, in addition to all, is a breeding ground for various bacteria, fungi, dust mites and other microorganisms. Entrained air flow, they can travel throughout the building. Therefore, in many countries the state of ventilation in catering and food industry is checked not only firefighters, but the SES. And if the buildings are equipped with central air conditioning system with partial recirculation of air, the problem could be even more acute. Any infection transmitted through airborne droplets, hitting one of the premises, is sure to be spaced out around the house. Another problem faced by first abroad and then we have - it's clogged ducts in the construction process. Since in modern office buildings and luxury housing utilities (including ventilation) shall be laid, and will run until the finishing work in air ducts are addicted to various aerosols, particulate matter, asbestos, and the usual dust. As a result, the room in which the decoration has been completed, may suffer because of paint or whitewash applied in others. And later, settled in the duct "good" can become a source of unpleasant odors. More recently the problem of cleaning air ducts in most cases solved by replacing them that often requires a gross overhaul. But in our time have the technology to get rid of the "light house" from the accumulated debris in them not even bothering people in the building. Perhaps the most advanced and comprehensive cleaning technology developed by Danish firm ducts "DunDuctClean". It includes a range of activities, which is used to perform a unified compact equipment. Firstly, it is necessary to determine the extent and nature of contamination. For this to vent runs a special-purpose robot that can penetrate the ducts are higher than 150 mm. Scout carries a spotlight and a miniature video camera that allows to visualize the landscape on the opening screen color TV. Dust rags, slimy fat, in which the robot leaves a distinct track, construction debris. Sometimes the frame is "revive" rats or cockroaches, that are willing to settle in such places. The spectacle is so repulsive that 90% of customers who wished to examine the air passages, resulting in ordering them to be cleaned. Ducts are divided into sections. This can be done by closing valves, or securing inside the network special barrier bottles. Inflating like a balloon, they tightly cover the channel. On one side of the chosen site sets up a special filter-unit, which creates a negative pressure in the duct, on the other - runs a cleaning machine. For the smallest airways use a special rotating "brush", which is connected to an electric drill with a flexible shaft. A clean air duct height 150 mm is still the same multi-function robot. Depending on the size and shape of the air channels it shall be equipped with a set of rotating brushes. Thus, we can release the dust around the air ducts with a diameter up to 1200 mm and square up to 1100 mm, controlling the quality of work with a miniature video camera. Separate conversation - the vertical sections, for which there is a special robot. To remove grease necessary to use more sophisticated technology - "IceTech". Here we use the dry ice pellets that are "shelled" the surface of the duct. All necessary equipment, including video camera, which allows to visually monitor the quality of treatment is again set on the universal robot. This cleaning method is much more effective and safer than previously used methods of dissolution of fat by means of chemical reagents with the subsequent disposal of the slurry with water and compressed air. Since the absolute airtight air do not exist, the processing channels using reagents always lead to leaks and costly repairs. At the same time, cleaning of canals dry ice is not fraught with such dangers and does not lead to contamination of the premises. Additionally, you need to say a few words about the filter-units, providing a static pressure of 750 to 1300 Pa, with performance ranging from 500 to 10,000 m3 / h. Dust and grease, carried a powerful air flow get into the centrifuge. As a result, all the dirt is in a special bag, the air flow is directed into the filter HEPA. Such a cleaning system is widely used in medical institutions and, depending on the class of the filter can capture 99,97-99,995% of all impurities. Thus, today's "sweeps" does not leave behind any dirt. Another direction of technology use "Dan-Duct Slean - disinfection of air, where sampling and subsequent disinfection of the air channels is used all the same multi-robot with a special set of equipment.