Fabric Duct and Pressure Test Results
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This slides will explain more about pressure factors in fabric duct system by DuctSox - represented in Indonesia by Tawada CleanTech. For further information contact Tawada CleanTech at 021 5794 1139 or marketing@tawadacleantech.com
Fabric Duct and Pressure Test Results
- 2. Friction loss on fabric duct system by DuctSox Effects on velocity pressure, static regain and static pressure Effects on the uniformity of the outlet air
- 3. Research done at the Mechanical Engineering department of Tennessee Tech University (TTU) Same research lab trusted by ASHRAE to create ASHRAEs Duct Fitting Database
- 4. DuctSox comparing two fabric duct systems: Fabric duct with an internal frame Fabric duct without an internal frame Results: Pressure loss difference between two types of systems is very small
- 6. Static pressure is provided by the HVAC unit (AHU) Inflation and operation of a fabric duct system is dependent on static pressure (SP), NOT inlet velocity
- 8. Velocity pressure (VP) is kinetic energy and slowly changes forms to a useful potential energy or static pressure regain (SPR) as the air travels down the constant diameter duct
- 9. For most systems, the pressure will be higher at the endcap than at the inlet due to SPR
- 10. In fabric duct system, SPR is common occurrence due to constant diameter sizing Internal damper (or AFD) is used to adjust SP and reduce the pressure difference AFD creates more uniform air dispersion through the whole length of duct
- 11. Rukan Permata Senayan A 20-21 Jl. Tentara Pelajar no. 5 Jakarta 12210 INDONESIA Ph. 021 5794 1139 e. marketing@tawadacleantech.com w. www.tawadacleantech.com