What are the key differences between a centripetal pump and a centrifugal pump, and how do these differences impact their performance and applications?

Centripetal pumps have a single rotating impeller that moves fluid towards the center of the pump, while centrifugal pumps have multiple impellers that move fluid outward. This difference affects the pressure and flow rate each pump can achieve. Centrifugal pumps are better for high flow rates at lower pressures, while centripetal pumps are better for higher pressures at lower flow rates. The choice between the two depends on the specific requirements of the application.