Using the owl feather as a template, Ziehl-Abegg, Inc. designed a more efficient and quieter axial fan. The owl is the quietest predator in the sky due to its unique feathers. Of interest to Ziehl-Abegg was this quietness, due to the shape of the feathers and the fine serrations on the wing’s trailing edge. The company tweaked its fan’s blade geometry, added winglets to the blade tip, and created a serrated trailing edge.The resulting design is more aerodynamic, saving energy to run the fan. The new blade design helped the company achieve significant reductions in noise levels. Comparing the Owlet to a prior product, the company says that testing showed noise levels had been reduced by 6 decibels. The human ear can detect about a 1 to 1.5 decibel difference, so a 6 decibel reduction is significant.This product page was contributed by Ashley Meyers
Key Differentiators
The fan’s noise reduction is not the only perk of this inventive fan. It is also more energy-efficient than its predecessor models.
Challenges Solved
By mimicking the quietest predator in the skies, Ziehl-Abegg, Inc. has created one of the quietest fans on the market. This fan is capable of providing air conditioning, refrigeration, transformer cooling, ventilation, and heating technology with minimal noise output.
Edit Summary
According to the manufacturer the design saves 15% energy, and is upto 7 dB less noisy
could you make the fin of an arrow out of the same material? i found the whole article very interesting.
Great article, I admire the efforts of Ziehl-Abegg Inc. to create this fan. I am wondering just how much less energy is the new fan using vs. older fans by comparison?