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 1 (47.31 KiB) Viewed 48 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 (54.77 KiB) Viewed 48 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 3 (26.6 KiB) Viewed 48 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 3-55- 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
Total Lost Head in pipe and fittings (ft) 2.17 1.37 0.58 4.3 Table 2. Pipe Sizing and Head Loss Calculations Pipe Flow Nominal Approx. Lost Pipe Fittings Total Section rate Size Fluid Head length Equivalent Length No. (gpm) (inches) Vel. (ft/100 ft) (ft) length (ft) (ft) (ft/s) 1-2 200 4 4.9 2.25 55 41.5 96.5 2-3 60 2.5 3.9 2.6 35 26 61 3-4 60 2.5 3.9 2.6 35 11 21 4-5 200 4 4.9 2.25 150 40 190 2-6 140 7-4 140 Units Flow and Rate Orifices (gpm) Chiller 200 Unit A 60 Unit B 140 Orifice a 60 Orifice b 140 Head Loss (ft) 50 35 10 i) (10 pts.) Size the pipe for sections 2-6 and 7-4 and determine total head losses in these sections (only for piping and fittings; exclude orifice and unit). (Hint: complete Table 2 for Sections 2-6 and 7-4.) ii) (5 pts.) What is the Unit B head loss in ft of water at a flow rate of 140 gpm?
iii) (2 pts.) What is the Orifice b head loss in ft of water at a flow rate of 140 gpm? iv) (3 pts.) What is the pressure drop across Orifice a in psi (Iblin2)? v) (10 pts.) Not considering your answers to questions i-iv above, assuming the head loss in Unit B is 100 ft and head loss in Orifice bis 20 ft and the total head losses in piping and fittings for section 2- 6-7-4 is 10 ft of water, what is the head requirement (in ft of water) for the pump?