System Dynamics
3rd Edition
ISBN: 9780073398068
Author: III William J. Palm
Publisher: MCG
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Textbook Question
Chapter 1, Problem 1.31P
Consider the milk container of Example 1.4.2 (Figure 1.4.7). A straw 9.5 cm long was inserted in the side of the container. While adjusting the tap flow to keep the water height Constant, the time for the outflow to fill a 250-ml cup was measured. This was repeated for several heights. The data are given in the following table.
Obtain a functional description of the volume outflow rate f through the straw as a function of water height h above the hole.
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Students have asked these similar questions
The following table lists temperatures and specific volumes of water vapor at
two pressures:
p = 1.5 MPa
v(m³/kg)
p = 1.0 MPa
T ("C)
v(m³/kg)
T ("C)
200
0.2060
200
0.1325
240
280
0.2275
0.2480
240
280
0.1483
0.1627
Data encountered in solving problems often do not fall exactly on the grid of
values provided by property tables, and linear interpolation between adjacent
table entries becomes necessary. Using the data provided here, estimate
i. the specific volume at T= 240 °Č, p = 1.25 MPa, in m/kg
ii. the temperature at p = 1.5 MPa, v = 0.1555 m/kg, in °C
ii. the specific volume at T = 220 °C, p = 1.4 MPa, in m'/kg
fluid mechanics
A pipe 200 (mm) diameter carries Oil at a
flow rate of 0.030 (m³/s). The pipe
diameter reduces from 200 (mm) to 150
(mm). Point 1 is located at the beginning
of the pipe and point 2 is located at the end
of the pipe. Elevation of point 1 is 165 (m)
lower than elevation of point 2. Water
pressure at point 2 is atmospheric pressure.
Water flow in the pipe ascending from
point 1 to point 2. Total head losses of
flow in the pipe equals to 15 (m).
1- Find the value of pressure head of Oil
at point 1.
2- Draw the H.G.L. of flow in the pipe.
PROBLEM #1:
Complete the data of the table below. Copy the entire table in your paper and use
a different colored pen for your answers, you may also box your answers. Show solution.
T:K
P: kPa
H: kJ/kg
U: kJ/kg
State (if wet steam
provides xv as well)
1
525
350
2
125
2700
3 455.15
750
4
600
Xv = 0.8
5
200
1800
PROBLEM #2
A nozzle is used to increase the velocity of steam before it enters a turbine as a part
of a power plant. The steam entering is at 1 MPa, 500 K and leaves at the conditions of 350°C
and 2 MPa. If the nozzle has an inlet diameter of 3 cm and an outlet diameter of 1 cm, how
much is transferred during the process? Is it lost or gained?
Chapter 1 Solutions
System Dynamics
Ch. 1 - Prob. 1.1PCh. 1 - Folklore has it that Sir Isaac Newton formulated...Ch. 1 - A ball is thrown a distance of 50 feet. 5 inches....Ch. 1 - An American football field is 100 yards long. How...Ch. 1 - How long is a 100-meter dash in feet?Ch. 1 - Convert 50 feet per second to miles per hour.Ch. 1 - The speed limit in some countries is 100...Ch. 1 - How many 60 watt lightbulbs are equivalent to one...Ch. 1 - Convert the temperature of 70°F to °C.Ch. 1 - Convert 30°C to °F.
Ch. 1 - A particular motor rotates at 3000 revolutions per...Ch. 1 - The displacement of a certain object is described...Ch. 1 - Prob. 1.13PCh. 1 - The displacement in meters of a certain vibrating...Ch. 1 - The distance a spring stretches from its “free...Ch. 1 - The following “small angle” approximation for the...Ch. 1 - Prob. 1.17PCh. 1 - Obtain two linear approximations of the function...Ch. 1 - Prob. 1.19PCh. 1 - Obtain two linear approximations of the function...Ch. 1 - Obtain a linear approximation of the function fh=h...Ch. 1 - The flow rate f in m3/s of water through a...Ch. 1 - Prob. 1.23PCh. 1 - The population data for a certain country are...Ch. 1 - Prob. 1.25PCh. 1 - Quenching is the process of immersing a hot metal...Ch. 1 - The useful life of a machine bearing depends on...Ch. 1 - 1.28 A certain electric circuit has a resistor and...Ch. 1 - 1.29 Water (of volume 425 ml) in a glass measuring...Ch. 1 - Consider the milk container of Example 1.4.2...Ch. 1 - Consider the milk container of Example 1.4.2...
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