Reference: VT-diameter in mm-number of blades p, then the use: PC computer fan, PAC heat-pump outdoor unit. Example: VT-120-9p-PC = 120 mm, 9 blades, PC fan.
STL and STEP files of axial fan impellers: PC fans in the usual frame sizes and heat-pump outdoor unit impellers.
Each impeller is designed and computed with the Heliciel software using blade element momentum theory. The product page gives the flow, pressure rise, torque and power computed at the design point, with the pressure-rise curve.
To create your own custom model and test its performance: Heliciel software
The first model of each category is free: test the import and the quality of the files. One free model per person per day.
Model designed and computed with the Heliciel software. Design point: 102 m³/h at 2,000 rpm, free air (120 mm case or radiator fan). Nine sickle-shaped blades in a 120 mm frame: the standard PC fan format.
Model designed and computed with the Heliciel software. Design point: 140.2 m³/h at 1,500 rpm, free air (140 mm fan). 7 sickle-shaped blades in a 140 mm frame: the standard PC fan format.
Model designed and computed with the Heliciel software. Design point: 55.5 m³/h at 2,200 rpm, free air (80 mm fan). 7 sickle-shaped blades in a 80 mm frame: the standard PC fan format.
Model designed and computed with the Heliciel software. Design point: 78.9 m³/h at 2,000 rpm, free air (92 mm fan). 7 sickle-shaped blades in a 92 mm frame: the standard PC fan format.
Model designed and computed with the Heliciel software. Design point: 13,600 m³/h at 159 Pa and 1,035 rpm (heat pump, heat exchanger). Five sickle-shaped blades for a 710 mm nozzle, at the duty point of a commercial exchanger fan.
Model designed and computed with the Heliciel software. Design point: 15,810 m³/h at 154 Pa and 930 rpm (heat pump, heat exchanger). Five sickle-shaped blades for a 800 mm nozzle, at the duty point of a commercial exchanger fan.
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A .zip archive: full-definition STL, STEP, Heliciel .hlc project and description sheet. The download link is also sent by e-mail.
Prices include 20 % French VAT. Personal use: resale and redistribution of the files are forbidden.
A propeller is a dangerous object, in particular because of the risk of bursting under centrifugal force. These files result from theoretical assumptions and are supplied without any guarantee of operation. These models must be tested and validated in conditions that cannot endanger human life; a propeller tested and validated by a professional may then be used.
