Fire retardant treatment of air ducts of ventilation systems. Laying of fire-retardant coating of air ducts. Fire retardant coating "Nerteks-V" consists of

Fire retardant coating "Nerteks-V" consists of

In the event of a fire, it may be vital to the safety of the occupants of the building that some electrical systems and the services continue to function until all personnel have escaped. Therefore, such systems will need protection from fire for a certain period of time.

The following points are some of the factors to consider when determining the correct specification to ensure that the system cable channels will provide the required fire characteristics. Required fire resistance Required fire performance Supporting structure Penetration through walls and floors Acoustic performance Thermal insulation Water resistance Strength and appearance Cable failure temperature Maximum working temperature cable. Chapter 6 of the Fire Protection Manual contains the required slab thickness tables, examples of system specifications for a range of fire rated ducts, and the required fire protection periods.

Storage conditions and guarantees of fireproof coating "Firevent"

If these stress levels are exceeded, it is necessary to increase the size of the suspension rods or reduce the area of ​​the hanging hangers or protect the hangers. Penetration of the hanger attachment into any concrete soffit should be a minimum of 50mm for 120 minutes or 65mm for 240 minute ratings.

It uses a unique and patented double wall construction that is lightweight, shockproof and moisture resistant. The duct assembly consists of a series of prefabricated duct sections that have a simple 4 bolt prefabricated connection system known to the installer.

Fast and simple assembly combined with a single sales setup helps to reduce labor costs. Once installed, the fire rating is achieved immediately, without the need for outer wrappers or enclosures of any type, eliminating multiple trade coordination and helping to improve the overall project schedule.

Exhaust line for zero cleaning. It is rated for 2 hours fire resistance with zero clearance on combustible materials and complies with the International Mechanical Code, the National Building Code of Canada and the National Building Codes. fire protection.

Exhaust duct with one wall. This system is also ideal for projects where several hoods need to be combined into common channel, which gives the designer the opportunity to reduce the required space and the cost of installing multiple ducts.

Installation flange connections are available that include a chemically inert and liquid hermetic sealing system. The duct can be supplied with a rectangular or circular cover, which provides additional flexibility to allow designers to achieve required airflows when shallow ceiling spaces or shaft requirements limit duct size. The channel is offered in a minimum 18-gauge of stainless steel 304 or 316 fully welded.

Available doors are available and factory installed and pressure tested before shipment. Rendering installed system... As the industry's thinnest three-hour fire suppression system, this slim profile is achieved by eliminating the need for bulky wrappers and housings.

Once installed, the fire rating is achieved immediately without the need for additional processing of any kind, which eliminates multiple trade coordination, helping to improve the overall project schedule. Prefabricated ballistic system.

It is designed to maintain the stability and integrity of the mechanical ventilation system from high exposure to ballistic threats. Underground corrosion-resistant air duct. Full encapsulation also makes the installation much cleaner and faster, further reducing labor costs. Slim and flexible, it has been specially designed to provide fire resistance to kitchen and ventilation ducts around the world.

Flexible wrap system designed for drying ventilation ducts in a multi-unit enclosure where the exhaust pipes of the dryer pass through multiple fire compartments before being discharged outside the building. Flexible wrap designed to reduce the spread of flame and smoke radiation in a fire plastic pipes or any structure supporting plastic-coated cables.

This module examines the design and application of textile air distribution systems. Examples of the application of pneumatic distribution to fabrics or textiles date back to the mid-20th century, when simple, inflatable cotton bags were attached to the end of metal pipes to provide a means of supplying large amounts of ventilation air. While applications initially tended towards industrial locations where lightweight, machine washable ducts were particularly attractive, such as food preparation areas, abattoirs, and laboratories, they have since become more widely used in commercial and industrial plants such as offices, workshops, schools, shops and showrooms.

Fire protection - installation technology

Figure 1: Example of a laboratory using a low-permeability textile semicircular ventilation system... However, several manufacturers, many of whom developed in Europe, have developed respectable design and installation guides as part of their sales proposals, with each system requiring individual design, depending on the characteristics of the room, volume and temperature supply air.

Fire retardant coating - a comprehensive protective system

At the end of their useful life, the fibers can also be recycled into recycled polyester materials. Textile air ducts are used with both permeable and non-permeable materials. Permeable materials can be classified according to their dust-holding capacity. This does not mean that air ducts should be used as filters. Textile-based systems require filtration in the unit, for example in more traditional metal duct systems.

However, some particulate matter will enter the supply air - the dust holding capacity of the fabric and the quality of the centralized filtration will affect the cleaning frequency. High dust-proof materials are made from staple filaments capable of carrying a large number of dust without blocking the flow of air through the material. Low dust materials are usually woven from multifilament warp yarns. These fibers are smooth and smooth, with a small surface area compared to staple fibers.

Air distribution with textile based ventilation systems. The air distribution principle used for a simple textile-based ventilation system is fundamentally different from the air distribution principle in conventional system ventilation equipped with metal ducts and hidden diffusers. Uncoated textile systems use permeable fabrics to distribute air in a room, scattering the surface of the material's surface, allowing air to enter the room at a low velocity, sometimes called low impulse systems.

There are also hybrid systems that use a mixture of a permeable material for diffusion and additional holes for projection and further distribution of air. Figure 3: Circular permeable tissue with “pulse” feed channels with directional nozzles.

Figure 4: Circular permeable textile channels with the addition of directional nozzles for diffusion and projection. The air distribution principle for these systems is often based on the principles of displacement ventilation, where air is supplied at a slightly lower temperature than indoor air. Due to the density difference, the cooled supply air is heavier than warm air indoors, the supply air continues to move towards the floor. As with other displacement systems, heat from sources such as people, equipment and solar energy generates convection currents, causing the air to be displaced, so moving heat and pollutants away from the occupied zone must be recovered to high level.

Low velocity air delivery is suitable for cooling or distributing large volumes of air at a temperature similar to that of the room air. High air change rates can be achieved with low speeds engagement in the occupied area due to air discharge over the entire surface of the duct.

In permeable systems with low impulse power, the textile surface is effectively a fine mesh allowing the supply air to pass through the surface at a low, uniform discharge rate. Since the surface of the material is continuously "washed" by diffuse supply air, the surface of the material does not show condensation, therefore it allows supply air at a temperature below the dew point of the room air.

Such low speed systems are unsuitable for use in heating systems as the warmer supply air will settle at a high level and most likely "short-circuit" back to the exhaust system. They rely on dedicated openings in the impermeable duct material to provide jets of supply air. They can be in the form of small holes or grooves located in specific places and groupings in the textile channel, or using nozzles fixed in the fabric, which allow more precise control of both the area and the direction of the air stream.

To ensure the required fire resistance of air ducts, we offer

Figure 5: Example of a pool using a high impulse impermeable circular ventilation system with 5 mm openings. Channels with many small openings in textiles result in a large induction of air in the room, so the speed decreases faster compared to nozzle systems. Adding nozzles to the duct increases the delivery parameters so that systems can be tailored to very specific air distribution needs. For example, systems can be made for industrial areas that have air flush nozzles for the soffit to remove condensation, while other nozzles are oriented to meet the passenger comfort needs below.