Pumps centrifugal pump

Kreisel-pumpe, /. centrifugal pump rotary pump, -rad, n. turbine turbine rotor, turbine impeller, -verdichter, m. turbocompres-sor. 

The pressure developed by a centrifugal pump depends on the fluid density, the diameter of the pump impeller, the rotational speed of the impeller, and the volumetric flow rate through the pump (centrifugal pumps are not recommended for highly viscous fluids, so viscosity is not commonly an important variable). Furthermore, the pressure developed by the pump is commonly expressed as the pump head, which is the height of a column of the fluid in the pump that exerts the same pressure as the pump pressure. 

Pumps and tanks come in a variety of designs and shapes. Some of these designs include centrifugal and positive displacement pumps. Centrifugal pumps can be mounted vertically and horizontally in the field. Special symbols are used to distinguish each of these. A common symbol... 

Packed pump Centrifugal pumps that handle water or nonhazardous liquids do not use a mechanical seal. They use a cheaper and simpler packed seal. 

From the relationship of the flow ratio to the efficiency ratio, it is established that the flow ratio for this efficiency ratio is 5.3 indicating that an increase of less than 20 per cent in flow through the mainstage is required to achieve the operation of this system with the vented tank. This particular example shows the importance of the concept of the jet pump-centrifugal pump combination when specifications of the type herein considered are encountered. 

Well pumps Designed to draw water to the surface from an underground water source. Depending on the well depth and configuration, these pumps can be jet pumps, centrifugal pumps, or submersible pumps. 

In general, compare to positive displacement pump, centrifugal pump is not very expensive, requires less maintenance and space. 

---