In Problem 6.107, a theoretical flow rate of water to a village was calculated without any consideration of line losses. In Problem 7.50, an assumed value of 2.8 m was included as an estimate for losses in the line and the resulting flow rate was only 6.22 x 10 − 4 m 3 / s . Now rework the problem and determine the actual losses that would occur. Use 25°C water running in a flexible smooth tube that is 1200 m long and has the same 20 -mm diameter. Let's check the assumed value for losses now. Using a flow rate of 6.22 x 10 − 4 m 3 / s , what would be the actual losses? What conclusions can we draw about the original proposal to install this line? Why is the calculation of losses so important?
In Problem 6.107, a theoretical flow rate of water to a village was calculated without any consideration of line losses. In Problem 7.50, an assumed value of 2.8 m was included as an estimate for losses in the line and the resulting flow rate was only 6.22 x 10 − 4 m 3 / s . Now rework the problem and determine the actual losses that would occur. Use 25°C water running in a flexible smooth tube that is 1200 m long and has the same 20 -mm diameter. Let's check the assumed value for losses now. Using a flow rate of 6.22 x 10 − 4 m 3 / s , what would be the actual losses? What conclusions can we draw about the original proposal to install this line? Why is the calculation of losses so important?
Solution Summary: The author explains Reynolds number, velocity, diameter, kinematic viscosity, and cross-section area of the pipe.
In Problem 6.107, a theoretical flow rate of water to a village was calculated without any consideration of line losses. In Problem 7.50, an assumed value of
2.8
m was included as an estimate for losses in the line and the resulting flow rate was only
6.22
x
10
−
4
m
3
/
s
. Now rework the problem and determine the actual losses that would occur. Use 25°C water running in a flexible smooth tube that is
1200
m long and has the same
20
-mm diameter. Let's check the assumed value for losses now. Using a flow rate of
6.22
x
10
−
4
m
3
/
s
, what would be the actual losses? What conclusions can we draw about the original proposal to install this line? Why is the calculation of losses so important?
3-55 A multifluid container is connected to a U-tube,
as shown in Fig. P3–55. For the given specific gravities
and fluid column heights, determine the gage pressure at
A. Also determine the height of a mercury column that
would create the same pressure at A. Answers: 0.415 kPa,
0.311 cm
I need help answering parts a and b
Required information
Water initially at 200 kPa and 300°C is contained in a piston-cylinder device fitted with stops. The water is allowed to cool
at constant pressure until it exists as a saturated vapor and the piston rests on the stops. Then the water continues to cool
until the pressure is 100 kPa.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Water
200 kPa
300°C
On the T-V diagram, sketch, with respect to the saturation lines, the process curves passing through the initial, intermediate, and final states of the water. Label the
T, P, and V values for end states on the process curves.
Please upload your response/solution by using the controls provided below.
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.