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4 Rules for Flexible Ducts that Remodelers Need to Know

  Using flexible ducts saves time, but careless installation can cause performance-related problems that are hard to find and even harder to fix after the drywall goes up. On most projects, HVAC ductwork  is located in designated chases that maximize the efficiency of the airflow. But the path for the final branch of the ductwork tree—the one that runs from the trunk or plenum to the outlet register—is typically chosen by the subcontractor. Often, they find themselves competing to find space to run the ducts among all the wiring and piping already installed by the electrical and plumbing trades.  Flexible ducts can speed installation by reducing the number of joints in a run and eliminating the need for elbows and offsets. They also easily conform to oval as well as round connectors. But the physical properties of flexible ducts that create advantages are also the source of potential problems if care isn’t taken during installation. A good first step, or course, is to make sure there
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Update to flexible duct standard

  The draft standard   AS 4254.1 Ductwork for air-handling systems in buildings, Part 1: Flexible duct   is open for comment until November 18. The document provides standardised requirements for the performance testing, manufacture and installation of flexible ducts in order to improve their thermal performance. It is particularly relevant for specifiers, manufacturers, regulatory authorities and installers of air-handling systems for buildings. Independent market audits and studies in Australia and the USA have estimated thermal energy losses in the vicinity of 20 per cent to 40 per cent in flexible duct systems due to poor installation practices and insulation being thermally deficient for the application into which it is installed. The National Construction Code requires different thermal ratings for insulation used on flexible duct, depending on the climate zone and the application it is installed into. This, in conjunction with the increased energy efficiency requirements for new

Roadmap to safe and quality insulation

  The governments of New South Wales and Victoria, along with   Insulation Australiasia   (IA) and the   Insulation Council of Australia & New Zealand   (ICANZ) are developing an industry-led roadmap to ensure that insulation is installed in Australia in a manner that is safe and delivers quality outcomes. The project team consists of the  Energy Efficiency Council  (EEC) and the  Australian Sustainable Built Environment Council  (ASBEC). The aim of the insulation roadmap is to facilitate actions from industry, government and community that will de-risk insulation. An industry-led approach, says the project team, will ensure that the roadmap is supported by the best available information from the experts and the market, and will ensure that each party (industry, government and community) plays the role that they are best suited to undertake. First step: consultation The team has published a consultation paper that sets out initial findings from the project and potential solutions f

Aluminium Flexible Duct Non Insulated (Nude)

Nude (non-insulated) flexible duct is specifically produced for low and medium pressure heating, cooling, ventilation, exhaust, and air conditioning systems. Nude flexible duct is produced from multi layer foil strengthened with high tension hard steel spring wire. It has high elasticity and flexibility. Full range of flexible uninsulated multiple layers laminated ducting for the HVAC market Made of Multi-layer aluminum/polyester laminate with embedded flexible wire spring for different needs of operating temperature Ideal for use in general purpose exhaust applications and ventilation of central air-con system Max air Velocity: 30 Meter/Sec(6000ft/min); Max air pressure: 250mm W.G.

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