EBK APPLIED FLUID MECHANICS
7th Edition
ISBN: 9780100668348
Author: UNTENER
Publisher: YUZU
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Chapter 18, Problem 18.40PP
A tank of Refrigerant is at
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For the following system, calculate the flow rate from the nozzle. Give the result Q in m3/s
A fan is used to extract 140m3 air per minute from a large room. A circular duct of diameter 0.53 m connects the fan to the room, and the air is exhausted from the fan into the atmosphere through a conical diffuser that increases in diameter from 0.53 m to 0.8 m. A manometer shows that the pressure in the room is sub-atmospheric and the water height differential across the manometer is 6 mm. Neglecting losses, calculate:a. The static and stagnation pressures upstream of the fanb. The static and stagnation pressures downstream of the fanc. The power supplied by the fan to the air[Hint: define the following stations: 1. The room, 2. Immediately upstream of fan, 3. Immediately downstream of fan, 4. The atmosphere]
Problem 4A partly full water tank admits water at 85 N/s weight flow while ejecting water on the other side at 5500 cm3/s. The air pocket in the tank has a vent at the top and is at 20°C and 1 atm. If the fluids are approximately incompressible, how much air in N/h is passing through the vent? In which direction?
Chapter 18 Solutions
EBK APPLIED FLUID MECHANICS
Ch. 18 - A pipe in a compressed air system is carrying 2650...Ch. 18 - Prob. 18.2PPCh. 18 - Prob. 18.3PPCh. 18 - A duct in a heating system carries 8320 cfm....Ch. 18 - The velocity of flow in a ventilation duct is 1140...Ch. 18 - Prob. 18.6PPCh. 18 - Prob. 18.7PPCh. 18 - Prob. 18.8PPCh. 18 - Prob. 18.9PPCh. 18 - Prob. 18.10PP
Ch. 18 - Prob. 18.11PPCh. 18 - Describe a centrifugal fan with forward-curved...Ch. 18 - Prob. 18.13PPCh. 18 - Prob. 18.14PPCh. 18 - Name four types of positive-displacement...Ch. 18 - Name a type of compressor often used for pneumatic...Ch. 18 - Prob. 18.17PPCh. 18 - Prob. 18.18PPCh. 18 - Prob. 18.19PPCh. 18 - Compute the specific weight of nitrogen at 32...Ch. 18 - Compute the specific weight of air at 1260...Ch. 18 - Prob. 18.22PPCh. 18 - An air compressor delivers 820 cfm of free air....Ch. 18 - Prob. 18.24PPCh. 18 - Prob. 18.25PPCh. 18 - Prob. 18.26PPCh. 18 - Specify a size of Schedule 40 steel pipe suitable...Ch. 18 - For an aeration process, a sewage treatment plant...Ch. 18 - Prob. 18.29PPCh. 18 - Prob. 18.30PPCh. 18 - Prob. 18.31PPCh. 18 - Prob. 18.32PPCh. 18 - Prob. 18.33PPCh. 18 - Prob. 18.34PPCh. 18 - Prob. 18.35PPCh. 18 - Figure 18.14 iD shows a two-compartment vessel....Ch. 18 - Prob. 18.37PPCh. 18 - Prob. 18.38PPCh. 18 - Prob. 18.39PPCh. 18 - A tank of Refrigerant is at 150 kPa gage and 20C....Ch. 18 - Prob. 18.41PP
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- Using Bernoulli's principle, determine the pressure change between the upstream and downstream end of the nozzle. The velocities at the entrance and exit are 2.55m/s and 1.13m/s,respectively. Note: Temperature is 20 degrees centigrade. Nozzle is horizontal.arrow_forwardQ1. What would be the effect on the calculated force on the flat plate if the jet were to leave the plate not horizontal but inclined upwards at an angle of 1 °? If the experiment were to be repeated with the vane in the form of a cone with an included angle of 60° (half angle 30°), how would you expect the results to appear?arrow_forwardSuppose a 4-in diameter penstock delivers 140 gal/min of water through an elevation change of 100 ft. The pressure in the pipe is 27 psi when it reaches the turbine. What power (KW) is delivered to the turbine? a. 2.91 KW b. 1.41 KW c. 3.40 KW d. 1.65 KW e. 2.48 KW f. 2.13 KWarrow_forward
- List at least two common examples of fans, of blowers, and of compressors.arrow_forwardAir flows steadily from a high pressure container (A) to a low pressure container (B) through an ideal convergent-divergent nozzle. Find the flow area at the throat and at the exit of the nozzle. Data: mass flow rate: 2 kg, air pressure in container A: 700 kPa, inlet temperature: 116 C, air pressure in container B: 70 kPa.arrow_forwardA worker in a children's playground is cleaning a slide with a hose. She observes that a horizontal stream directed into the low end climbs to a point 14 ft above the nozzle. What is the nozzle velocity of the stream in ft/s?arrow_forward
- A turbine is rated 620 hp when the flow of water through it is 22 ft3/s. Assuming an efficiency of 85 percent what head is acting on the turbine?arrow_forwardA jet of freshwater strikes a series of vanes of a turbine at 25° with the direction ofmotion and leaves it at 150° absolute with the direction of motion. The absolute inletvelocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore frictionacross the vanes. Calculate:1. the vane outlet angle.arrow_forwardA jet of freshwater strikes a series of vanes of a turbine at 25° with the direction ofmotion and leaves it at 150° absolute with the direction of motion. The absolute inletvelocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore frictionacross the vanes. Calculate:1. the hydraulic efficiency.arrow_forward
- A high-pressure washing system's pump supplies 1 gallon of water persecond at 100 psi pressure. The nozzle should be designed so that the static pressureof the water as it exits the nozzle is the same as the atmospheric pressure. If theinside diameter of the hose leading from the pump to the nozzle is 2 in., whatshould the diameter of the nozzle exit be? What will be the velocity of the waterat the exit of the nozzle?arrow_forwardWater is flowing out of the nozzle (2) into atmospheric pressure (101 kPa). What is the flow velocity at point (1), when flow rate is 36.24 m3/h?arrow_forwardWater enters a fountain through a pipe with a cross-sectional area ?1 at a flowrate ?. The pressure in the inlet pipe is ?1. The water then leaves through a nozzle with a crosssectional area ?2 and at an angle θ, as shown in the figure below. Both the inlet and the nozzle are at a height ℎ2, and the jet reaches a maximum height ℎ3.You may assume that viscosity is negligible.a) Find the horizontal force on the blockb) What is the horizontal-component (?2), vertical component (?2) and magnitude (?2) of the velocity of the jet as it leaves the nozzle?c) What is the maximum height of the jet? You may assume that the horiztonal component of velocity is the same at every point in the jet.arrow_forward
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Intro to Compressible Flows — Lesson 1; Author: Ansys Learning;https://www.youtube.com/watch?v=OgR6j8TzA5Y;License: Standard Youtube License