FluidMechanic F5 - Abstract In this experiment we were able...

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Abstract: In this experiment, we were able to estimate the head losses in different sorts of valves and piping connections assembled in two separate hydraulic pipes circuits. Experimental values of loss coefficient (K), the relation between friction coefficient (f) and Reynolds number for a straight pipe, the relation between flow rate (Q) and head loss (h L ) were found. Their theoretical values were calculated and compared to the experimental values. For instance, the error % for (h L ) for the pipes with sudden expansion and (Q = 2.37E-4 m 3 /s) was found to be 4.32% while with the same (Q) the error % for the sudden contraction was 43.6%. For the same pipe, the experimental value of K for both gate and globe was compared with the literature value to produce an error 78.4% and 97.1% respectively.
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Introduction: In chemical processes, a lot of pipes connections are involved to carry the treated fluids. During fluid transfer, a pressure loss exists due to the change in the flow phenomena such as, a change in pipes diameter or flow direction, which cause a resistance of fittings or valves to let the fluid pass smoothly. Pressure loss in pipe circuit is sorted into one due to the viscous resistance throughout the whole system and another due to fitting and pointed effects .The overall loss is the sum of both. So, we can say the total loss can be different than the sum of the losses of the separate components. By conducting this experiment, we’ll be able to find the pressure losses across to different systems. Also, for the straight pipe portion, the relations (f Vs Re) and (Q Vs h L ) will be generated. Theoretical Background: For an incompressible fluid flowing through a pipe the continuity eq. (Q=V 1 A 1 =V 2 A 2 ) is applicable.
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This note was uploaded on 09/27/2011 for the course CHEMICAL E CHE 309 taught by Professor M.elgaily during the Fall '09 term at King Fahd University of Petroleum & Minerals.

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FluidMechanic F5 - Abstract In this experiment we were able...

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