DIDW Backward Curve Impeller
Product Details:
| Corrosion Resistant | Yes |
| Shape | Round |
| Material | Stainless Steel |
| Power Source | Electric |
| Surface Treatment | Coated |
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Description
In a backward-curved fan wheel (backward-curved blades), the energy is largely produced as static pressure present in the fan wheel. With this type of fan wheel higher efficiencies are achieved. They can also be used without fan housing and without any noticable losses in performance, e.g. for roof fan units or for air circulation. To ensure a flow without interruptions in the fan wheel, it is very important to use a suitable fan inlet cone (optimum split flow). In comparison to forward-curved wheels, these wheels make a low frequency humming noise due to the smaller number of blades. The total pressure characteristic curve of backward-curved impellers is steeply inclined. At constant rotational speed, the power requirement for these wheels rises to a given maximum PL max.
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