Two types of centrifugal fans

Back

3.8 Two types of centrifugal fans

centrifugal fans with forward curved impellers

The high speed of these fans creates high kinetic energy, ie high dynamic pressure.

Through the housing useful in dynamic pressure and the static pressure is converted effluent air is discharged collected.

These centrifugal fans always require a spiral housing.

Centrifugal fans with forward curved blades produce a larger volume of air volume and higher static pressures than fans with backward blades of the same size.

They also have higher air speeds, but this is reflected in lower efficiency.

centrifugal fan with backward curved fan blades

A backward directed impeller need not be installed in a spiral casing. The efficiency is particularly high, with low operating costs.

A fan with backward curved blades has an overload protected characteristic. That is, it is stable even at different flow rates.

Because of these characteristics of the centrifugal fan with backward curved fan blades was for the Clean Air Solution Products from Zehnder selected.

The maximum efficiency is about in the middle of the fan characteristic curve.

Fan curve and efficiency of the centrifugal fan with backward curved blades in the air Clean Air Solution E 12000 .

BackNext