FLUID MECHANICS FUNDAMENTALS+APPS
4th Edition
ISBN: 9781259877766
Author: CENGEL
Publisher: MCG
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Chapter 1, Problem 16CP
You are to understand how a reciprocating air compressor (a piston, cylinder device) woks. What system would you use? What type of system is this?
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3. A hydraulic lift is shown below. The combined mass of the piston, rack, and car is 4000 lbm.
The working fluid is water. There is no heat transfer to or from the water, and the internal energy
of the water per unit mass is constant. The water may be considered incompressible.
(a) Taking all the water in the reservoir, line, and hydraulic cylinder as the system (i.e., taking
the closed-system approach), calculate the work necessary to raise the rack and car 1 ft (neglect
the change in potential energy of the water in the system).
(b) Repeat part (a), taking all the water plus the car and the rack as the system.
(c) Repeat part (a), taking an open-system approach; choose as your system the volume of the
hydraulic cylinder, excluding the piston, rack, and car. If the absolute pressure in the system is
1000 lbf/in², calculate the volume that must flow in to raise the car 1 ft.
Reservoir
Pump
Hydraulic
cylinder
55 kmol per hour of air is compressed from P1 = 1 bar to P2 = 6.1 bar in a steady flow compressor. Delivered mechanical power is 98.9 kW. Temperatures and velocities are:
T1 = 301K T2 = 520 K, u1 = 10.8 m/s and u2 = 3.8 m/s.
Estimate the rate of heat transfer from the compressor in kW, 3 decimal values. Assume that Cp = 7/2R and that enthalpy is independent of pressure.
p46,#14 with illustration and explanation
Chapter 1 Solutions
FLUID MECHANICS FUNDAMENTALS+APPS
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Ch. 1 - What is a steady-flow process?Ch. 1 - Define stress, normal stress, shear stress, and...Ch. 1 - What are system, surroundings, and boundary?Ch. 1 - When analyzing the acceleration of gases as they...Ch. 1 - When is a system a closed system, and when is it a...Ch. 1 - You are to understand how a reciprocating air...Ch. 1 - What is the difference between pound-mass and...Ch. 1 - In a news ankle, is stated that a recently...Ch. 1 - Explain why the light-year has the dimension of...Ch. 1 - What is the net force acting on a car cruising at...Ch. 1 - A man goes to a traditional market to buy a steak...Ch. 1 - What is the weight, in N, of an object with a mass...Ch. 1 - What is the weight of a 1-kg substance in N,...Ch. 1 - Determine the mass and the weight of the air...Ch. 1 - A 3-kW resistance heater a water beater...Ch. 1 - A195-Ibm astronaut took his bathroom scale (a...Ch. 1 - The acceleration of high-speed aircraft sometimes...Ch. 1 - A 10-kg rock is thrown upward with a force of 280...Ch. 1 - The value of the gravitational acceleration g...Ch. 1 - At 45° latitude: the gravitational acceleration as...Ch. 1 - 1-32 The gravitational constant g is 9.807m/s2 at...Ch. 1 - On average, an adult person breathes in about 7.0...Ch. 1 - While solving a problem, a person ends up with...Ch. 1 - An airplane flies horizontally at 70m/s . Its...Ch. 1 - If the airplane of Prob. 1-35 weighs 17 lbf,...Ch. 1 - The boom of a fire truck raises a fireman (and his...Ch. 1 - A 6-kg plastic tank that has a volume of 0.18m3 is...Ch. 1 - Water at 15°C from a garden hose fills a 1.5 L...Ch. 1 - A forklift raises a 90.5 kg crate 1.80 m. (a)...Ch. 1 - The gas tank of a car is filled with a nozzle that...Ch. 1 - A pool of volume V (in m3) is to filled with water...Ch. 1 - Based on unit considerations alone, show that the...Ch. 1 - What is the importance of modeling in engineering?...Ch. 1 - What is the difference between the analytical and...Ch. 1 - When modeling an engineering process, how is the...Ch. 1 - What is the difference between precision and...Ch. 1 - How do the differential equations in the study of...Ch. 1 - What is the value of the engineering software...Ch. 1 - The weight of bodies may change somewhat from one...Ch. 1 - The reactive force developed by a jet to push an...Ch. 1 - An important design consideration in two-phase...Ch. 1 - Consider the flow of air through a wind turbine...Ch. 1 - A tank is filled with oil whose density is =850...Ch. 1 - If mass, heat, and work are not allowed to cross...Ch. 1 - The speed of an aircraft is given to be 260 m/s in...Ch. 1 - One J/kg is equal to (a) 1kPam3 (b) 1kNm/kg (c)...Ch. 1 - Which is a unit for power? (a) Btu (b) kwh (c)...Ch. 1 - The speed of an aircraft is given to be 950 km/h....Ch. 1 - The weight of a 10-kg mass at sea level is (a)...Ch. 1 - The weight of a 1 -Ibm mass is (a) 1Ibmft/s2 (b)...Ch. 1 - A hydroelectric power plant operates at its rated...Ch. 1 - Write an essay on the various mass- and...Ch. 1 - Search the Internet to find out how to properly...Ch. 1 - Another unit is kgf, which is a force unit used...Ch. 1 - Discuss why pressure tests of pressurized tanks...
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