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What points should be grasped in the selection of small centrifugal Fan

Jun 04, 2019

First of all, the stable parameters of centrifugal fan should be as follows: air volume, full pressure, efficiency, specific sound pressure level, rotating speed and electromechanical power. Centrifugal fan manufacturers can be divided into three categories according to pressure: high pressure centrifugal fan p > 3000pa, medium pressure centrifugal fan 1000 p 3000pa and low pressure centrifugal fan p < 1000pa. Different types of centrifugal fans are determined according to the physical, chemical properties and application fields of the transported gas.

Considering the air leakage loss of the pipeline system, the intended deviation, the negative deviation of the actual air volume of the ventilator and the negative deviation of the wind pressure, the safety factor of 1.05 1.1 and 1.10 1.15 is also adopted when the centrifugal fan manufacturer selects the type. In order to prevent the ventilator from running in the low efficiency area for a long time, it is not appropriate to use too large safety factor.

Considering the air leakage loss of the pipeline system, the intended deviation, the negative deviation of the actual air volume of the ventilator and the negative deviation of the wind pressure, the safety factor of 1.05 1.1 and 1.10 1.15 is also adopted when the centrifugal fan manufacturer selects the type. In order to prevent the ventilator from running in the low efficiency area for a long time, it is not appropriate to use too large safety factor.

When the fan utilization condition is inconsistent with the fan sample condition, the fan function should be changed at the end of the operation. When deciding the ventilator, it is not only necessary to consider the achievement of one-off investment, but also to consider the long-term economic operation effect. Centrifugal fan manufacturers try to decide the same type of centrifugal fan in parallel or in series.www.jnblower.com