Design, Development and Performance Testing of Horizontal Split Case Pump

Mechanical Engineering

Centrifugal pump is a hydrodynamic machine, in which rotating impeller continuously transmits mechanical work from the driving machine to fluid. The kinetic energy is converted into potential pressure energy. The pump is an essential component of an irrigation system. Proper selection of pumping equipment that will provide satisfactory performance requires good understanding of existing conditions. Design restrictions, operating conditions of the irrigation system, and required flexibility in system operation must be understood before an efficient pump can be selected for a given system. Need of Design of Pump Before a pump is selected it is necessary to determine the head (H) and discharge (Q) required by the system. The system head versus discharge relationship should be evaluated for the entire range of operating conditions. When the system head and/or discharge vary significantly, special attention must be given to selecting a pump (or set of pumps) that can satisfy all conditions. Since most pumps are not very efficient over wide ranges in operating heads, the most prevalent conditions should be determined and a pump that operates efficiently over this set of conditions, and can operate under all other possible conditions, should be selected. Today’s requirement regarding Pump is to satisfy specified duty point means required head and discharge, with less power consumption and with more efficiency. Now a day in most of the water service applications duty point requirements are between 150 m to 275 m head and 1000 m3/hr to 2500 m3/hr discharge. A centrifugal pump can operate at a combination of head and discharge

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