ductflow

  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

  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

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.