Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Air Ducts Minor Loss Coefficient Diagrams

Minor loss coefficient diagrams for air ductwork, bends, expansions, inlets and outlets  - SI units

Sponsored Links

Minor loss in air ducts based on a summarized minor loss coefficients and air flow velocity:

minor loss diagram air ductwork

  • 1 Pa = 1 N/m2 = 1.4504x10-4 lb/in2 = 1x10-5 bar = 4.03x10-3 in water = 0.336x10-3 ft water = 0.1024 mm water = 0.295x10-3 in mercury = 7.55x10-3 mm mercury = 0.1024 kg/m2 = 0.993x10-5 atm

Minor loss for some common duct-work components like bends, expansions, inlets and outlets can be estimated from the diagrams below.

Minor Loss Coefficients - Bends

The minor loss coefficients in 90o bends can be estimated with the diagram below.

air ducts minor loss resistance coefficient in bends

The minor loss in bends 0 - 180o can be estimated with the equation

ξ0-180 = ξ90 α / 90                                            (1)

where

ξ0-180 = minor loss coefficient for the bend with the actual angle

ξ90 = minor loss coefficient for the 90o bend according the diagram above

α = angle of the actual bend

The minor loss coefficient in a 90o bend like the one below is 1.0.

air ducts minor loss resistance coefficient in 90 bend

Minor Loss Coefficients - Expansions

minor loss coefficients diagram - expansions

Minor Loss Coefficients - Inlets

minor loss air ducts inlets

Minor Loss Coefficients - Outlets

minor loss air ducts outlets

Sponsored Links

Related Topics

Related Documents

Tag Search

  • en: minor loss air ducts diagram pressure drop flow pa
  • es: aire pérdida menor conductos de presión diagrama pa flujo gota
  • de: geringen Verlust Luftkanäle Diagramm Druckabfall Fluss pa
Sponsored Links

Search the Engineering ToolBox

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate this page to
About the Engineering ToolBox!

Citation

This page can be cited as

  • Engineering ToolBox, (2008). Air Ducts Minor Loss Coefficient Diagrams. [online] Available at: https://www.engineeringtoolbox.com/air-duct-minor-loss-diagram-d_332.html [Accessed Day Mo. Year].

Modify access date.

Customize Ads in the ToolBox

Make ads more useful in Google Ad Settings .

. .

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

6 22

Sponsored Links
.