What is the formula for calculating the speed of a Roots blower
Regarding the calculation of the speed of Roots blower, although there is no direct formula to determine the speed separately (because the speed is usually set according to specific requirements and working conditions), it can be understood and converted through the relationship with parameters such as air volume and pressure. Here are some relevant formulas and explanations:
1. The relationship between rotational speed and air volume:
Formula: Q=V × n ÷ 60
Among them, Q represents the air volume (in cubic meters per minute m3/min), V represents the average wind speed at the outlet of the fan impeller (in meters per second m/s), and n represents the speed of the Roots blower (in revolutions per minute rpm).
This formula indicates that at the average wind speed V at the outlet of the fan impeller, the higher the speed n, the greater the corresponding air volume Q.
2. The relationship between rotational speed and pressure (simplified calculation method):
Formula: P=k √ n
Among them, P is the pressure of the Roots blower, n is the speed of the Roots blower, and k is a constant.
This formula provides a simplified calculation method for estimating the pressure of a Roots blower at a given speed. However, please note that in practical applications, the pressure and speed of Roots blowers may be affected by various factors, such as motor power, air volume, gas density, etc.
However, it should be emphasized that the above formula is only a tool for understanding and converting the relationship between the speed of Roots blower and other parameters. In practical applications, the speed of Roots blowers is usually set according to specific working conditions and requirements, and multiple factors such as the performance curve of the blower, motor power, and gas density need to be comprehensively considered.
Therefore, when calculating the speed of the Roots blower, it is recommended to refer to the performance curve of the blower and the parameter table provided by the manufacturer to ensure that the selected speed can meet the actual working requirements and achieve performance. Meanwhile, it is also necessary to pay attention to the maintenance and upkeep of the fan to ensure its long-term stable operation.
