Foam insulation ducts

The main purpose of technical air conditioning systems is to achieve a comfortable temperature for humans. You must fulfill the following conditions: the air must be cleaned, repaired odors and toxic substances, air must be heated or cooled, humidity should be raised or lowered. Inside the building there should be no loss of energy in the air distribution system. In addition to reducing energy losses, it is important that at a temperature below the dew point at facilities not formed condensate. For more comfort the people inside the building other sounds that occur within the system must also be suppressed or absorbed. Why preference should be insulated with closed cell foam? When to reduce heat exchange with the cold air ducts with a temperature below ambient temperature, thermal insulation is applied, it is on both sides exposed to constant pressure of water vapor. Partial pressure difference from one edge of the insulating material can be calculated using standard physical formula, and then the obtained data can be correlated with the amount of water vapor within the insulation material. Since water vapor tends to penetrate into the material, it reaches a level where the surface temperature is below the dew point and condensation will begin with all the consequences. Best resistance to water vapor have a closed-cell structure, since each cell of these materials is an effective insulation system. The higher the quality of the material, the greater the insulating effect and, accordingly, more equipment life, lower costs for preventive maintenance, and generally fewer problems at the consumer. When selecting insulation for ducts should pay attention to the fact that long-term effectiveness of thermal insulation materials, such as, for example, Porileks IPPs LF "C" and Ekofol "C" to prevent condensation and minimize heat absorption depends on the initial heat and the efficiency of a vapor barrier . This is important because it is an effective vapor barrier is a guarantee of minimizing revenue water vapor inside the insulating material, so that is a slight change in the heat for a long period of time. Do I need a soundproof air? The materials used for insulation of air ducts, designed to perform one more very important ergonomic function. They should significantly reduce the noise created in the duct (due to the fans, air turbulence, etc.) The most critical sound frequency that occur in the ducts, including those caused by the fans, are in the frequency band from 125 to 1000 Hz. The maximum reduction in sound level obtained within a given frequency band was 26 dB. This result is achieved by isolating Porileks IPPs LF or Ekofol, 10 mm thick bonded to the metal surface. For comparison, we may add that traditional materials achieve similar results at a thickness of up to 25 mm, which significantly increases the volume of insulated duct. Should I be afraid of corrosion under insulation? As you know, one of the main problems air-conditioning systems, is the formation of condensate. This can lead to corrosion and serious damage to the installation. And here it is not only financial costs, which can be avoided. Continuous dripping of water formed by condensation, can also interfere with work processes. To prevent condensation on pipes and tanks is necessary to choose a special insulating material, properly defining the required minimum thickness of heat insulating layer. In some systems, insulated materials with open pores, found corrosion under insulation. Past experience suggests that if the duct was insulated material with open pores (even if it is carefully assembled and covered with a metal shell), it is often the integrity of the surface protective layer is broken by mechanical damage. In this case, the moisture begins to penetrate through the insulation material and gradually begins to corrode the metal surface and air ducts. There is a so-called corrosion under insulation. Herein lies the danger, and additional expenses (for repair, replacement, downtime, etc.). Polyethylene foam Porileks IPPs LF "C" and Ekofol "C", a holistic barrier against penetration of water vapor, resulting in a more reliable option compared with open-cell foam. Therefore zakrytoporistaya foamed structure - a key indicator to which attention must be paid for insulation of metal air ducts.