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Three pumps in the arrangement shown in Fig. RQ5-13 are to be used to pump water from the low reservoir to the high reservoir. (a) Write the energy equation between a and b. State all assumptions. (b) State the equations needed to determine the operating point. Fig. RQ5-13

Two pumps in series are used to pump water from a low reservoir to a high reservoir. A schematic representation is shown in Fig. P5-1. (a) Write the energy equation between stations band a. State all assumptions. (b) Find the equations needed to determine the steady-state operating point using system simulation. (c) In what other

Heat-exchanger characteristics: Simple counter flow U = 250 Btu/hr-ft/- OF A =-i,200 ft2 Pressure drop on hydraulic fluid is in Fig. P5-7(b) Fig. P5-7(b) Using the information given: (a) Develop the equations required to simulate the system if the exit temperature T; is a required output of the simulation’ process. (b) Develop a simulation program.

1. Explain what mean. 2. What is the physical meaning of each term in Eq. (6-6)? Eq. (6-6)

Explain the analogy between uncertainty in experimentation and uncertainty in thermal-systems analysis and design. What is a sensitivity coefficient? Explain why the central thesis of the uncertainty procedure examined in this chapter is that .the squared product not the individual magnitude of the terms, is the important value. What does say about the effect of

Find the bypass rate for the pump system shown in Fig. P5-9. The orifice is square edged with a ~-in.-diameter hole and has a “K-factor” of approximately 660 in a 3-in. pipe. All pipe is steel, and all valves are gates. The fluid is water at 80°F. Fig. P5-9

1. In the series-piping-system uncertainty example, what variable possesses the largest normalized sensitivity coefficient? 2. In the series-piping-system uncertainty example, what variable contributes the most to the overall uncertainty?

What are three sources of uncertainty in thermal-systems analysis? What are process specifications? Why does the engineering database contain uncertainties?

Compute the uncertainty in the pump increase in head for Problem 34 in Chapter 1. Problem 34 A 250-ft-high office building has a 6-in. diameter steel standpipe and a 100-ft long 2-&-in. diameter fire hose on each floor. The nearest fireplug is 100 ft away from the standpipe’s ground connection. The firefighters connect a 6-in.

Compute the uncertainty in the pump increase in head for Problem 26 in Chapter 1. Problem 26 The product transfer system shown in Fig. P1-26 is used to move benzene from a storage tank at a plant to a tank farm at a nearby shipping facility. The benzene is stored at 60°F.All pipes are schedule