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2. A pipe flow system is shown below in Figure 3. Table 1 shows the data that was available to another engineer and he h

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2. A pipe flow system is shown below in Figure 3. Table 1 shows the data that was available to another engineer and he h

Posted: Fri Mar 04, 2022 10:10 am
by answerhappygod
2 A Pipe Flow System Is Shown Below In Figure 3 Table 1 Shows The Data That Was Available To Another Engineer And He H 1
2 A Pipe Flow System Is Shown Below In Figure 3 Table 1 Shows The Data That Was Available To Another Engineer And He H 1 (47.31 KiB) Viewed 44 times
2 A Pipe Flow System Is Shown Below In Figure 3 Table 1 Shows The Data That Was Available To Another Engineer And He H 2
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2 A Pipe Flow System Is Shown Below In Figure 3 Table 1 Shows The Data That Was Available To Another Engineer And He H 3
2 A Pipe Flow System Is Shown Below In Figure 3 Table 1 Shows The Data That Was Available To Another Engineer And He H 3 (26.92 KiB) Viewed 44 times
2. A pipe flow system is shown below in Figure 3. Table 1 shows the data that was available to another engineer and he has already sized sections 1-2-3-4-5 to keep velocity below 5 ft/s and has created Table 2 already (which is incomplete). He has left the company and your boss asked you the following questions, assuming the desired flow rate of Unit Bis 140 gpm: (show your work for all questions) Expansion Tank - 40 ft - 30 ft Orifice a Orifice b Unit A Unit B Globe Valve 20 ft 40 ft Chiller 55- Ž Pump Figure 3. Schematic of Piping System (Not to Scale). Lengths and Equivalent Lengths of fittings for Sections 1-2-3-4-5 are given in Table 2. Table 1. Available Data for Head Losses of Chiller and Units A and B and the Orifices a and b at the specified flow rate in table Q (gpm) Lost head (ft) for the given Q (gpm) Chiller 200 50 Unit A Unit B 70 25 Orifice a 60 10 Orifice b 70 5 *Note that this gpm listed may or may not be the required flow rate; this is the flow rate for the corresponding lost head data available/given. 60 35
(ft) 21 Table 2. Pipe Sizing and Head Loss Calculations Pipe Flow Nominal Approx. Lost Pipe Fittings Total Total Lost Section rate Size Fluid Head length Equivalent Length Head in No. (gpm) (inches) Vel. (ft/100 ft) (ft) length (ft) pipe and (ft/s) fittings (ft) 1-2 200 4 4.9 2.25 55 41.5 96.5 2.17 2-3 60 2.5 3.9 2.6 35 26 61 1.37 3-4 60 2.5 3.9 2.6 35 11 0.58 4-5 200 4 4.9 2.25 150 40 190 4.3 2-6 140 7-4 140 Units Flow Head Loss and Rate (ft) Orifices (gpm) Chiller 200 50 Unit A 60 35 Unit B 140 Orifice a 60 10 Orifice b 140
vi. For questions vi. a,b, and c (below) use Figure 3, but assume that the pump provides a pressure of 60 psi at a flow rate of 200 gpm and that the pressure in the expansion tank is 5 psig (gage) and the expansion tank is elevated 40 ft above the pump, and the head loss between the expansion tank and pump inlet at this flow rate is 3 ft of water. (vi.a) (7 pts.) Assuming a pump efficiency of 60%, what is the break horsepower (in hp) required to run the pump? (vi.b) (6 pts.) What is the pressure at the outlet (discharge) of the pump in psig? (vi.c) (7 pts.) Calculate the the NPSH of this system, assuming a water temperature of 70 F at the Suction side (inlet) of the pump.
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