Download Positive Displacement Pumps: A Guide to Performance by American Institute of Chemical Engineers (AIChE) PDF

By American Institute of Chemical Engineers (AIChE)

Confident Displacement Pumps is a present reference advisor for optimistic displacement pumps for either conventional and state of the art checking out tools, and serves as a bridge among textbooks and manufacturer's literature by way of offering gear trying out practices in accordance with technical knowledge, functional adventure, and educational idea. With its basic, functional concentration, this ebook not just is a source consultant to any engineer's activity, but additionally provides vital info to the final literature of pump basics and working reliability: Written for box clients, and terminology concisely outlined. A mentoring advisor highlighting parts for troubleshooting problem-solving while functionality standards should not met. Produced with consensus and undergone a similar rigorous technical evaluation technique as different ETPC strategies.

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Extra info for Positive Displacement Pumps: A Guide to Performance Evaluation (AIChE Equipment Testing Procedure)

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33 AlChE Equipment Testing Procedure Progressive cavity pumps intended for highly viscous fluids, but tested on water or a similar low viscosity fluid, may produce performance test results that do not correspond to the specified operating conditions. The pump manufacturer should be contacted for assistance in correlating the test results to the specified process conditions. 1. 2. However, the unique characteristics of progressive cavity pumps permit them to be used in low suction pressure applications where the flow rate is considerably below the 5% reduction in flow defined by The Hydraulic Institute.

In many applications, pump testing is performed with water and the results achieved with water must be correlated to the actual process fluid. Precautions: Before operating progressive cavity pumps, it is essential that the system be reviewed to ensure that the suction and discharge lines to the pump are not obstructed. Progressive cavity pumps cannot operate dry or withoutfluid passing through them for prolonged periods of time without damaging the pump. Similarly, progressive cavity pumps cannot be operated against a closed or obstructed discharge line without possible damage to the pump and system, and possible injury to personnel.

Note that the environment around the pump, such as acoustically reflective or absorbent surfaces, can have a great influence on the sound pressure measured value. Other equipment operating nearby will also influence sound pressure measurements. 2 Vibrations and Temperature Vibration and temperature measurements are usually taken for maintenance reasons, and can be used to predict an upcoming failure so the problem can be corrected before it occurs. To do this, it is very important to take baseline measurements before any problems occur.

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