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Georgia Tech - CHE 3200 - Class Notes - Week 10

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Georgia Tech - CHE 3200 - Class Notes - Week 10

Description: We went over Darcy's Law and then moved on to Pumps. The two major types of pumps are PDP and Centrifugal pumps. We also talked about pump placement and NPSH. We finished up the week talking about priming.
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Description: We went over Darcy's Law and then moved on to Pumps. The two major types of pumps are PDP and Centrifugal pumps. We also talked about pump placement and NPSH. We finished up the week talking about priming.
2 Pages 42 Views 33 Unlocks
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Unformatted text preview: Tues Oct 23 Exams were retumed! V . Darcy's Law W E G in filtration AL F-cate AP ik (porosity, pare size/ shape) Sign adopted to make physical sense Vis Pes - Pag kon > Pet Pet de votre n ve Parte > Pei Pa-Me ve er Note : Ven's Verv! . Por mos e o Papers V. Pa-pa M [ en ] P arte constant 4. sXe/ks AXc changes! Volume Aftate f tate= (1-6) Pravice cate thickness: AXC Melid Vs Hant. I Velta A Coxiertation of Solids i slurry Peale - Vesthuile .cs.iie are very nice cake Hickness takes the form AX: Viltic, Teaether a dve, Pa - Pz_si => alle A [PA- Ps] Together! A at M _C7] A ]So, leto k, Vokz Measure veas a function of time (for example by placing the wp with filtrak ana balance e plot vs. Vf If the model warts: Streight line wintercept skapet, ks Pumps So far we have treated pomps as black boxes : floiel --> Pump? _fluja! For practical applications we need to tutes a little more! Two Mogor Cencepts: Positive Displacent Pomp (PPP) . Centrifugal Pumps PPP Example travel Ideal: Q pisten area. travel cycles Cylinder Piston China Lant) M (1) real: leakagesPump Characterization Reservoir valve Measure ri[]+9[5] fer different uolues (P-D) P pumpe motor [ scale constant G (salety brates, therwise motor coils bum) 'D poweps typically operate at constant om Pump Efficiency + useful werk is gettingsletzun) L uteil werk supolied to pump power supplied to pay Centrifugal Pumps Operating Principle .. Impeller action increases kinetic energy in low, vi high Diffuser brings Velezity dawn pressure up impeller Ve~w. Rimpeller larger impeller er higher angular velocity -->AP: Peut-Pa Not AP is relevant, but there ("head") - Mood is the same for different liquids Thur Oct 25 Example nfump e 1400 ppm, 10" elicometer of impeller hersing, water P qx P Wout eve som => Post Pasp w2/2). = 41. psi (3bar) Idealized model in all of the above! Usually we cannot realect friction of you (Vest e s me flow The true generated pressure head depends on flow jale:

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