Forward Curved Centrifugal Fan Efficiency

Centrifugal fans with forward curved blades always require a spiral housing.

Forward curved centrifugal fan efficiency.

Forward curve sometimes referred to as a squirrel cage fan forward curve fans are used in most residential and light commercial hvac equipment. Because of this they tend to be noisier than axial fans and require more power to run. Forward curved centrifugal fans look more like hamster wheels and can create more air pressure. The centrifugal fans with forward curved blades 2l 90 o are designed due to the small dimensions and good static pressure characteristics of fans and such a recommendation refers to the fans.

As a resistance to flow is applied to the suction or exhaust side of the fan the volume flow rate will drop. These centrifugal fans are ideal for those companies looking for fans that can deliver medium to high airflow in their facilities. Their characteristic features are a low noise level relatively small air flow with a high increase in static pressure and space saving application. Forward blade backward blade and radial blade.

Because of this they tend to be noisier than axial fans and require more power to run. They utilize a much higher rpm than the rpm found in backward curved centrifugal fans but it s worth noting that they also usually have a lower efficiency. Centrifugal fans are capable of generating relatively high pressures. Centrifugal fans with forward curved blades.

When there is no pressure in the system the fan is blowing freely a forward curved centrifugal fan will produce the greatest volume flow. The characteristic curve of three kinds of centrifugal fan is shown in figure 2 15. Forward curved centrifugal fans. Generally centrifugal fans have three types of blade.