Home > Exhibition > Content

How to judge the efficiency of centrifugal fan

Mar 21, 2019

We use centrifugal fans in order to achieve a certain ventilation effect in the place of use, which will improve the air quality of our production and life, and the use efficiency of the fan is related to the effect of ventilation and ventilation. Our centrifugal fan manufacturers produce different types of fans, the results achieved and the efficiency of use are also very different. Let's take a look at the efficiency of centrifugal fan in use through what centrifugal fan is the way to determine.

Each hole is drilled at the inlet and outlet of the centrifugal fan, and the static pressure of the inlet and outlet of the centrifugal fan is measured. According to the static pressure of centrifugal fan, the operating efficiency of the fan is estimated. This method is relatively simple, does not require users to know a lot of expertise, and this method will not affect the normal use of centrifugal fans.

The inlet of some centrifugal fan is equipped with adjustable air valve. If the opening degree of regulating air door is less than 95%, the centrifugal fan must be in low efficiency operation state. Adjusting the air door can not be fully open, will cause two aspects of the impact. First, it will cause uneven inlet air flow of centrifugal fan, and reduce the aerodynamic performance of centrifugal fan. Second, there will be pressure losses. Based on a centrifugal fan with a flow rate of 100000 cubic meters per hour, the loss of pressure per 100pa requires approximately 4kw motor power.

For centrifugal fan with hydraulic coupling adjusting speed, the mechanical loss of coupling is 5% at rated speed and 28% at 75% rated speed, so it can be seen that the mechanical loss of coupling is 5% at rated speed and 28% at 75% rated speed. The operation efficiency of centrifugal fan with hydraulic coupling speed regulation will be much lower.

We fan manufacturers to provide users with these methods can help users to measure the performance of centrifugal fans, these methods are also used to determine the efficiency of centrifugal fans are often used. We provide methods that require a certain technical content to operate, so require our users to master a certain knowledge of the fan.www.jnblower.com