Pumps_lecture

Pumps_lecture - Pumps (Most material from Fluid Mechanics,...

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Pumps (Most material from Fluid Mechanics , Ç engel and Cimbala, Chapter 14) Introduction and Terminology : Pump ” is a general term for any device that adds mechanical energy to a fluid. For liquids, we usually call them “ pumps ”. For gases, we usually call them “ fans ”, “ blowers ”, or “ compressors ”, depending on the relative pressure rise and volume flow rate. There are two basic types of pump: Positive displacement pumps (PDPs) – fluid is sucked into a closed volume, and then the fluid is pushed out. Dynamic pumps – no closed volume is involved; instead, rotating blades called impeller blades supply energy to the fluid. Positive Displacement Pumps : Your heart is a great example of a positive displacement pump (PDP). Blood is pushed out when the right and left ventricles contract. Again, the appropriate valves open and close to enable this. Blood is sucked into
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This note was uploaded on 07/23/2008 for the course ME 33 taught by Professor Cimbala during the Fall '05 term at Penn State.

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Pumps_lecture - Pumps (Most material from Fluid Mechanics,...

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