Pumps mechanical engineer specification

ASME Standards, American Society of Mechanical Engineers, New York B73.1-2001, Specification for Horizontal End Suction Centrijugal Pumps for Chemical Process... 

Figure 7.2. Performance curves in dimensional and dimensionless forms (a) Data of a pump with a specific diameter and rotation speed, (b) Dimensionless performance curves of all pumps geometrically similar to (a). The dashed lines identify the condition of peak efficiency. (After Daugherty and Franzini, Fluid Mechanics with Engineering Applications, McGraw-Hill, New York, 1957).

American Society of Mechanical Engineers. Current edition. Specification for Vertical In-Line Centrifugal Pumps for Chemical Processes. ASME B73.2M. New York ASME. 

The method just outlined and illustrated is route specific. It is very flexible and simple to use. It can also be easily computerized if the GP data can be fed in as numerical values. Here we have illustrated its use in the context of a cross-country pipeline, such as a crude oil, products, or perhaps slurry pipeline, which might be commonly encountered by chemical engineers. The method is completely adaptable to any hydraulic flow problem and could be used equally well for a short in-plant pumping system analysis. It can help the designer of flow systems to avoid sometimes subtle traps for slack flow and siphons that might not be immediately obvious if the mechanical energy equation is applied only once between the initial and final points of the flow system. 

Hollow fiber membranes (HFMs) formed via phase inversion methods exhibit specific physicochemical characteristics and generally favorable surface and mechanical properties. Due to these properties the HFMs can be used in diverse applications including ultrafiltration, gas separation, dialysis, cell culture, bioreactors, and tissue engineering. Most artificial kidneys are based on hollow fiber membranes. Blood is circulated through the center of the fiber, while isotonic saline, the dialysate, is pumped countercurrently around the outside of the fibers. Urea, creatinine, and other low-molecular weight metabolites in the blood diffuse across the fiber wall and are removed with the saline solution. 

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