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Non-insulated air ducts Thermovent series

Non-insulated air ducts Thermovent series
Non-insulated air ducts Thermovent series
  • Thermovent N, Zn.
  • Thermovent N, Thermovent S.

Semi-flexible galvanized or stainless steel air ducts.

Description
  • Semi-flexible stainless or galvanized steel spiral seam air ducts with high aerodynamic and strength characteristics.
Features
  • Made of incombustible, corrosion-resisting stainless steel or galvanized steel band.
  • Increased thermal resistance (up to 700°С).
  • Superdense high-quality triple locks ensure high seam tightness and total air tightness of the ducts.
  • Low dynamic losses.
  • Low weight and easy mounting.
Recommended application
  • Applied in residential and industrial ventilation, air conditioning and heating systems with the maximum pressure 10 000 Pa.
  • For supply and exhaust ventilation.
  • Applied in the systems of hot air removal from boiler houses and smoke exhaust systems.
Technical data:
 
Item Thermovent N, Zn Thermovent N Thermovent S
Diameter range [mm] 80/100/110/120/125/130/140/150/160/180/200/250/315
Material Galvanized steel Stainless steel Stainless steel
Number of layers 1 1 1
Total thickness [μm] 80 80 100
Operating temperature range [°C] -30 +700 -30 +700 -30 +700
Maximum air speed [m/s] 30 30 30
Maximum operating pressure [Pa] 10000 10000 10000
Minimum bend radius [mm] 3хD 3хD 3хD
Length [m] 1; 2; 3; 6 1; 2; 3; 6 1; 2; 3; 6

 

Pressure loss diagram per 1 m stretched air duct

Calculation example:

  1. Select a curve that matches the air duct diameter [mm], 200 mm in this case.
  2. Find the intersection point of this line with the vertical line of the required air flow in m3/h, 500 m3/h in this case.
  3. The horizontal line that shows the pressure loss in Pa per 1 m straight air duct crosses this intersection point.
  4. Multiply pressure loss value (2.4 Pa/m at 20°С) by total air duct length to get the total pressure loss value. To calculate pressure loss in case of bends consider each bend as extra air duct meter.

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