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Air Duct
Network Calculation

liNear Analyse Ventilation – Air Duct Network Calculation with AutoCAD / CADinside

The program supports the user in determining the volume flow rates which are added up and calculated according to the previously defined basic conditions. Additionally, on basis of the same drawing, a detailed calculation of the sound level development of each flow path is being performed. For all components, both internal sounds and absorbability in the octave bands are calculated according to VDI 2081.


Integrated Pipe Network Calculation incl. Redimensioning

The pipe network calculations of liNear are directly integrated into the CAD and allow direct access to the construction. Thus no interface between drawing and calculation is required. No more data exchange problems. The redimensioning can thus be carried out automatically directly in the model.

Dynamically Determined Zeta Values

The liNear air duct network calculation determines all zeta values using formulas or by interpolating from series of measurements. This is done while the calculation is running, for each individual value, in accordance with the current dimensions, velocities and volume flows.

Extensive Visualization Possibilities

Visual feedback of input values or calculation results can be used to quickly and easily evaluate a wide range of data. Dimensions, materials, but also velocities, pressure losses, unfavorable flow path and much more are perfectly visualized by coloring the network.

Further Functions

  • Detailed setting options, e.g. for dimensioning limits (maximum heights, etc.)
  • Flow mechanical balancing and sound calculation according to VDI 2081
  • Calculation with real product properties using data sets from leading manufacturers
  • Calculation results are automatically written to the model and updated when the calculation is changed
  • Dimensioning and drawing of outlets, generic or manufacturer-specific
  • Calculation directly from the model in each design stage
  • Detailed parts lists including article numbers and material check
  • Air duct bill of quantities and parts lists in several output formats (Windows printout, Excel, text, UGS, GAEB, ASD)
  • eKlimax interface