![]() With summing up all data collected and the current market requirement data, mathematically design a pump with property of Low flow/High Head. Evaluating the needs and study of advantages and disadvantages from the design point of view to develop an effective plan of execution. specific speed n pump rotational speed (rpm). A brief history of these pump types are taken for study and comparing the data such as type of impellers, efficiency, head coefficient, head-capacity curves and relative cost of the current designs and study the current needs. 3,960 is a units conversion to state fluid power in terms of horsepower. It is the most useful mechanical rotor-dynamic machine in fluid works which widely used in pump Seawater booster for critical services, Light hydrocarbon boosting, Petrochemical processing, Light-Vacuum and Heavy-Vacuum-Gas-Oil ie LVGO and HVGO respectively, Heavy-duty chemical processing etc. Low flow/High Head pump demands was born when the demand of more efficient and improved chemical reactions started requiring higher process pressure and temperatures. Industry experience has shown that a pump with a suction specific speed less than 120 (SI units) or 6000 (in US units) is in danger of recirculation and cavitation. N s N Q H m 3 / 4 Important Points The specific speed (Ns) of a turbine is defined as, the speed of a geometrically similar Turbine that would develop unit Power (P) when working under a unit Head (H) (1 m head). The design of Low Flow/High Head centrifugal pump are chosen because of its need and importance in chemical industry. ![]() The highlighting and most important parts which enhances the properties of the pump and on which changes are made to vary the output are the impeller and the body which is the casing. Specific speed is a way to normalize the performance of these hydraulic machines. In this paper, a study of centrifugal pump with single-stage end suction is worked out to design a new low flow/high head pump with certain specification. Specific speed is a concept developed for water turbines in 1915, which was later applied to centrifugal pumps (Stepanoff, 1948). Suction Specific Speed is a dimensionless value and can be calculated as. N ss can also be used to estimate safe operating ranges. Abstract : This paper deals with the development of Low Flow/High Head Pump. Suction Specific Speed is used to determine what pump geometry - radial, mixed flow or axial - to select for a stable and reliable operation with max efficiency without cavitation.
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