Issues with the motor power of the pump
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For an IH-type chemical centrifugal pump with a normal flow rate of 400 m3/h and a head of 45 meters, what is the power rating of the motor required? How do I calculate it or where can I find it? Please give me your advice! Also, what determines the selection of pumps? Looking forward to a detailed reply!
On page 16 of the website http://wenku.baidu.com/view/9d218f4d767f5acfa1c7cd3e.html, there is a similar pump with a power rating of 55 kW; you can take that as a reference. Additionally, both the pump and the motor come with their own nameplates; if anything is unclear, take a look at them.
Based on the pump’s performance curve, together with the medium being transported and referring to the product catalog, it is possible to determine the motor power.
1. The formula for calculating the shaft power of a pump is Pa = HQρ/102η, which is the formula used for vane pumps. 2. P = K*Pa/ηt. 3. The value of k is generally set to 1.25 when the shaft power is less than 15; it is set to 1.15 when the shaft power ranges from 15 to 55. 4. ηt (the efficiency of the pump’s rotating mechanism) is usually taken as 1. 5. By performing these calculations, values can be obtained that can be used as a reference for selection