This is a free preview. For full access
Finite Control Volume Analysis
Centrifugal Pump Flow Rate Calculation
Description
Centrifugal pump flow rate can be calculated with the energy equation. In this problem, water moves between two reservoirs at different elevations, and the pump provides the energy needed for the transfer. The pump input is 7500 joules per second, the elevation difference is 10 meters, and the head loss from friction and oth...
Show More
Transcript
如果需要计算一台离心泵的流量,该泵以每秒7500焦耳的功率将水从较低位置的水池抽送至较高位置的水池,则可使用能量方程进行计算。
两个水库之间的水位差为10米,水头损失为5米。
由于两个储液器的表面均与大气相通,入口和出口处的压力和流速均为零,这进一步简化了能量方程。
此处,水泵的扬程通过轴净输入功率与水的单位重量和流量乘积的比值求得。
若将泵的扬程代入简化能量方程,即可求得该泵的流量。
此外,将给定数值代入流量表达式可得到最终结果,该结果表示水泵抽水的速率。
Show More