What factors should be considered for centrifugal fan rating

In the centrifugal fan rating, we need to combine a number of factors for comprehensive analysis. One important factor is efficiency. Because efficiency is directly related to the cost of equipment. Generally, when determining the position of working point on the curve of centrifugal fan, the equipment should be controlled and adjusted in a wide flow range.
Generally speaking, in the evaluation process, to ensure that all the control is in a low flow state, so as to measure the efficiency of the centrifugal fan, efficiency and impact. Another problem we need to pay attention to is the control method. In fact, we need to take this into account when selecting equipment, but also know the characteristics of time ahead. In addition, we need to evaluate the life cycle and noise of the equipment.
When evaluating the running noise of the equipment, it is necessary to select a suitable centrifugal fan first, then select a working point near the peak efficiency, and then let the fan gradually reach a small state at low speed. To reduce the noise. Therefore, in the installation of equipment, should choose the appropriate location, as far as possible away from the office area.
In addition, the stability of centrifugal fan is also an important factor to be considered in evaluating its level. Generally speaking, the position of the working point on the equipment curve will directly affect the stability of the system. In other words, some fans may fluctuate in the stall range. The slope of performance curve of centrifugal fan should also be considered during its operation. This parameter will also have a certain impact on the performance of the fan.