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Your client has informed you that this system is scheduled to operate for many years. Thus, they want you to determine the flow rate in the cast-iron 5" SCH80 piping for two conditions: i) ii) The "best case" scenario where the piping is brand new. The "worst case" scenario inside. where the piping has become all rusty on the In order to eliminate the change in flow rate over time that you predict will happen in part a), a colleague suggests partially closing the gate valve when the piping is brand new and then gradually opening it as the piping becomes more and more rusty on the inside. By citing specific terms in the Bernoulli equation, give a brief explanation on how this technique works. Determine the gate valve loss coefficient that must be set to initially when the piping is brand new so that the flow rate of water matches the final conditions (i.e, when the piping has become all rusty on the inside and the gate valve is fully opened).

Your client has informed you that this system is scheduled to operate for many years. Thus, they want you to determine the flow rate in the cast-iron 5" SCH80 piping for two conditions: i) ii) The "best case" scenario where the piping is brand new. The "worst case" scenario inside. where the piping has become all rusty on the In order to eliminate the change in flow rate over time that you predict will happen in part a), a colleague suggests partially closing the gate valve when the piping is brand new and then gradually opening it as the piping becomes more and more rusty on the inside. By citing specific terms in the Bernoulli equation, give a brief explanation on how this technique works. Determine the gate valve loss coefficient that must be set to initially when the piping is brand new so that the flow rate of water matches the final conditions (i.e, when the piping has become all rusty on the inside and the gate valve is fully opened).

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Your engineering consulting firm has been sent the design for a simple piping system connecting two large water reservoirs (both at 10 °C) as shown in the accompanying figure. Z₁ = 19 m i) ii) C. Sharp-edged entrance, K₁= 0.5 inside. 9 m -Control volume boundary Standard elbow, flanged, K₁ = 0.3 90 m a. Your client has informed you that this system is scheduled to operate for many years. Thus, they want you to determine the flow rate in the cast-iron 5" SCH80 piping for two conditions: The "best case" scenario where the piping is brand new. The "worst case" scenario Gate valve, fully open K₁= 0.2- Z₂ = 4 m where the piping has become all rusty on the b. In order to eliminate the change in flow rate over time that you predict will happen in part a), a colleague suggests partially closing the gate valve when the piping is brand new and then gradually opening it as the piping becomes more and more rusty on the inside. By citing specific terms in the Bernoulli equation, give a brief explanation on how this technique works. Determine the gate valve loss coefficient that must be set to initially when the piping is brand new so that the flow rate of water matches the final conditions (i.e, when the piping has become all rusty on the inside and the gate valve is fully opened).
Transcribed Image Text:Your engineering consulting firm has been sent the design for a simple piping system connecting two large water reservoirs (both at 10 °C) as shown in the accompanying figure. Z₁ = 19 m i) ii) C. Sharp-edged entrance, K₁= 0.5 inside. 9 m -Control volume boundary Standard elbow, flanged, K₁ = 0.3 90 m a. Your client has informed you that this system is scheduled to operate for many years. Thus, they want you to determine the flow rate in the cast-iron 5" SCH80 piping for two conditions: The "best case" scenario where the piping is brand new. The "worst case" scenario Gate valve, fully open K₁= 0.2- Z₂ = 4 m where the piping has become all rusty on the b. In order to eliminate the change in flow rate over time that you predict will happen in part a), a colleague suggests partially closing the gate valve when the piping is brand new and then gradually opening it as the piping becomes more and more rusty on the inside. By citing specific terms in the Bernoulli equation, give a brief explanation on how this technique works. Determine the gate valve loss coefficient that must be set to initially when the piping is brand new so that the flow rate of water matches the final conditions (i.e, when the piping has become all rusty on the inside and the gate valve is fully opened).
Table 8.4 Representative Loss Coefficients for Fittings and Valves Geometry K Flanged regular Flanged long radius Threaded regular Threaded long radius Miter Miter with vanes Threaded regular Flanged long radius Threaded Fitting 90° elbow 45° Elbow Tee, dividing line flow Tee, branching flow Flanged Threaded Flanged 0.3 0.2 1.5 0.7 1.30 0.20 0.4 0.2 0.9 0.2 2.0 1.0 Fitting Globe valve Angle valve Gate valve Ball valve Water meter Coupling Geometry Open Open Open 75% open 50% open 25% open Open 1/3 closed 2/3 closed K 10 5 0.20 1.10 3.6 28.8 0.5 5.5 200 7 0.08
Transcribed Image Text:Table 8.4 Representative Loss Coefficients for Fittings and Valves Geometry K Flanged regular Flanged long radius Threaded regular Threaded long radius Miter Miter with vanes Threaded regular Flanged long radius Threaded Fitting 90° elbow 45° Elbow Tee, dividing line flow Tee, branching flow Flanged Threaded Flanged 0.3 0.2 1.5 0.7 1.30 0.20 0.4 0.2 0.9 0.2 2.0 1.0 Fitting Globe valve Angle valve Gate valve Ball valve Water meter Coupling Geometry Open Open Open 75% open 50% open 25% open Open 1/3 closed 2/3 closed K 10 5 0.20 1.10 3.6 28.8 0.5 5.5 200 7 0.08
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