Fluid Mechanics: Fundamentals and Applications
4th Edition
ISBN: 9781259696534
Author: Yunus A. Cengel Dr., John M. Cimbala
Publisher: McGraw-Hill Education
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Chapter 14, Problem 142P
To determine
The turbine which is an impulse turbine.
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What is the pressure drop in the turbine? Answer: 1176.91 kPa (replace “turbine pressure drop” for “pump pressure increase”)
Why are Francis and Kaplan turbines generally consideredunsuitable for hydropower sites where the availablehead exceeds 1000 ft?
How is the specific speed used to predict hydraulic turbine performance?
Chapter 14 Solutions
Fluid Mechanics: Fundamentals and Applications
Ch. 14 - What is the more common term for an...Ch. 14 - What the primary differences between fans,...Ch. 14 - List at least two common examples of fans, of...Ch. 14 - Discuss the primary difference between a porn...Ch. 14 - Explain why there is an “extra” term in the...Ch. 14 - For a turbine, discuss the difference between...Ch. 14 - Prob. 7CPCh. 14 - Prob. 8PCh. 14 - Prob. 9PCh. 14 - Prob. 10CP
Ch. 14 - There are three main categories of dynamic pumps....Ch. 14 - For each statement about cow cetrifugal the...Ch. 14 - Prob. 13CPCh. 14 - Consider flow through a water pump. For each...Ch. 14 - Write the equation that defines actual (available)...Ch. 14 - Consider a typical centrifugal liquid pump. For...Ch. 14 - Prob. 17CPCh. 14 - Consider steady, incompressible flow through two...Ch. 14 - Prob. 19CPCh. 14 - Prob. 20PCh. 14 - Suppose the pump of Fig. P1 4-19C is situated...Ch. 14 - Prob. 22PCh. 14 - Prob. 23EPCh. 14 - Consider the flow system sketched in Fig. PI 4-24....Ch. 14 - Prob. 25PCh. 14 - Repeat Prob. 14-25, but with a rough pipe-pipe...Ch. 14 - Consider the piping system of Fig. P14—24. with...Ch. 14 - The performance data for a centrifugal water pump...Ch. 14 - For the centrifugal water pump of Prob. 14-29,...Ch. 14 - Suppose the pump of Probs. 14-29 and 14-30 is used...Ch. 14 - Suppose you are looking into purchasing a water...Ch. 14 - The performance data of a water pump follow the...Ch. 14 - For the application at hand, the flow rate of...Ch. 14 - A water pump is used to pump water from one large...Ch. 14 - For the pump and piping system of Prob. 14-35E,...Ch. 14 - A water pump is used to pump water from one large...Ch. 14 - Suppose that the free surface of the inlet...Ch. 14 - Calculate the volume flow rate between the...Ch. 14 - Comparing the results of Probs. 14-39 and 14-43,...Ch. 14 - Prob. 45PCh. 14 - The performance data for a centrifugal water pump...Ch. 14 - Transform each column of the pump performance data...Ch. 14 - 14-51 A local ventilation system (a hood and duct...Ch. 14 - Prob. 52PCh. 14 - Repeat Prob. 14-51, ignoring all minor losses. How...Ch. 14 - Suppose the one- way of Fig. P14-51 malfunctions...Ch. 14 - A local ventilation system (a hood and duct...Ch. 14 - For the duct system and fan of Prob. 14-55E,...Ch. 14 - Repeat Prob. 14-55E, ignoring all minor losses....Ch. 14 - A self-priming centrifugal pump is used to pump...Ch. 14 - Repeat Prob. 14-60. but at a water temperature of...Ch. 14 - Repeat Prob. 14-60, but with the pipe diameter...Ch. 14 - Prob. 63EPCh. 14 - Prob. 64EPCh. 14 - Prob. 66PCh. 14 - Prob. 67PCh. 14 - Prob. 68PCh. 14 - Prob. 69PCh. 14 - Two water pumps are arranged in Series. The...Ch. 14 - The same two water pumps of Prob. 14-70 are...Ch. 14 - Prob. 72CPCh. 14 - Name and briefly describe the differences between...Ch. 14 - Discuss the meaning of reverse swirl in reaction...Ch. 14 - Prob. 75CPCh. 14 - Prob. 76CPCh. 14 - Prob. 77PCh. 14 - Prob. 78PCh. 14 - Prob. 79PCh. 14 - Prob. 80PCh. 14 - Wind ( =1.204kg/m3 ) blows through a HAWT wind...Ch. 14 - Prob. 82PCh. 14 - Prob. 84CPCh. 14 - A Francis radial-flow hydroturbine has the...Ch. 14 - Prob. 87PCh. 14 - Prob. 88PCh. 14 - Prob. 89PCh. 14 - Prob. 90CPCh. 14 - Prob. 91CPCh. 14 - Discuss which dimensionless pump performance...Ch. 14 - Prob. 93CPCh. 14 - Prob. 94PCh. 14 - Prob. 95PCh. 14 - Prob. 96PCh. 14 - Prob. 97PCh. 14 - Prob. 98PCh. 14 - Prob. 99PCh. 14 - Prob. 100EPCh. 14 - Prob. 101PCh. 14 - Calculate the pump specific speed of the pump of...Ch. 14 - Prob. 103PCh. 14 - Prob. 104PCh. 14 - Prob. 105PCh. 14 - Prob. 106PCh. 14 - Prob. 107EPCh. 14 - Prob. 108PCh. 14 - Prob. 109PCh. 14 - Prob. 110PCh. 14 - Prove that the model turbine (Prob. 14-109) and...Ch. 14 - Prob. 112PCh. 14 - Prob. 113PCh. 14 - Prob. 114PCh. 14 - Prob. 115CPCh. 14 - Prob. 116CPCh. 14 - Prob. 117CPCh. 14 - Prob. 118PCh. 14 - For two dynamically similar pumps, manipulate the...Ch. 14 - Prob. 120PCh. 14 - Prob. 121PCh. 14 - Prob. 122PCh. 14 - Calculate and compare the turbine specific speed...Ch. 14 - Prob. 124PCh. 14 - Prob. 125PCh. 14 - Prob. 126PCh. 14 - Prob. 127PCh. 14 - Prob. 128PCh. 14 - Prob. 129PCh. 14 - Prob. 130PCh. 14 - Prob. 131PCh. 14 - Prob. 132PCh. 14 - Prob. 133PCh. 14 - Prob. 134PCh. 14 - Prob. 135PCh. 14 - A two-lobe rotary positive-displacement pump moves...Ch. 14 - Prob. 137PCh. 14 - Prob. 138PCh. 14 - Prob. 139PCh. 14 - Prob. 140PCh. 14 - Which choice is correct for the comparison of the...Ch. 14 - Prob. 142PCh. 14 - In a hydroelectric power plant, water flows...Ch. 14 - Prob. 144PCh. 14 - Prob. 145PCh. 14 - Prob. 146PCh. 14 - Prob. 147PCh. 14 - Prob. 148PCh. 14 - Prob. 149PCh. 14 - Prob. 150PCh. 14 - Prob. 151P
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- What is the overall efficiency of the turbine if the power developed is 15,000 kW at a head of 150 meters and the nozzle discharge is 10 cubic meters per second? answer: 81.55%arrow_forwardUsing the specific rotation speed, what would be the best turbine option for a waterfallof 120m and a flow of 6m³/s, working with a 12-pole generator? And what would be the nqa for thissituation?ALTERNATIVESa) Francis Turbine Normal, nqa= 121.88.b) Kaplan turbine, nqa= 7312.89.c) Slow Francis Turbine, nqa=98.15.d) Deriaz Turbine, nqa= 290.5.e) Pelton turbine, nqa= 29.05.arrow_forwardThe design of a new dam reveals that a water head of 10 meter and water flow rate of 100 cubic meter per second (m3/s) can be supplied for electricity generation. What kind of turbines would you recommend for the electric power generation?arrow_forward
- Explain the working of a Delaval turbine with neat sketches.arrow_forwardA Francis turbine is to be designed to produce 27 MW at a shaft speed of 90rev/minunder an effective head of 27.8 m. Assuming that the optimum hydraulic efficiency is 90percent and the runner tip speed to jet speed ratio is 0.75, determine:(1) the power specific speed;(2) the volume flow rate;(3) the impeller diameter and blade tip speed.arrow_forwardA Francis turbine develops 3 MW under a head of 50 m at an overall efficiency of 88%. The diameterof the runner at the inlet is 80 cm and runner rotates with 300 rpm. If hydraulic efficiency of the turbine is90% and runner height at the inlet is 10cm, calculate (a) guide vane angle at inlet (b) blade angle at inletand (c) degree of reaction of the turbine.arrow_forward
- choose the correct answer Q1A- Using water jet forces to operate turbines in hydropower plant consider application of: * a) Bernoulli’s equation b) Darcy-Weisbach Equation c) Manning equation d) Momentum equation E-none of all above B-The main difference between the flow in pipes and the flow in open channels is * a) Existing the head loss b) Existing the free surface c) Existing the pressure drop d) None of all abovearrow_forwardGive at least two reasons why turbines often have greater efficiencies than do pumps.arrow_forwardA turbine of 9000 B.H.P. is working under a head of 25 mand runs at 100 R.P.M.- What will be the type of turbine ? Whatshould be its speed and power, when it is working under a head of16 m?arrow_forward
- 1) Interpret solar power in the context of environmental impact.2. What is the rigid dichotomy between windmill and diesel-driven pumps?3. For a normal windmill-driven pump at 3 m/s wind speed, the yield at a 10 m Head is typically 0.12 liters/s per m2 of rotor area, value windmills in the context of yield.arrow_forwardWhat is the over all efficiency of the turbine if the power developed is 12 MW at the head of 150 m and the nozzle discharges 10 m³ per second A. 70.65 B. 89.23 C. 81.55 D. 78.99arrow_forwardAlthough hydraulic turbines considered one of the most efficient power plants, their ecological impact is a big concern. Discuss this issue and suggest remedies for such problems by writing 100 words at least.arrow_forward
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