Question
In: Mechanical Engineering
An insulated rigid tank having a 0.2 m3 volume initially contains air at 400 kPa and...
An insulated rigid tank having a 0.2 m3 volume initially contains air at 400 kPa and 313 K. The amount of paddle-wheel work done on the system is 200 kJ. Calculate the nearest value of entropy change
a. 0.66 kJ/K
b. 0.88 kJ/K
c. None
d. 0.44 kJ/K
e. 0.33 kJ/K
Solutions
Expert Solution
Solution:- The given process is a constant volume process and it has been assumed that no heat transfer takes place across the walls of the rigid tank. Standard values of CV (Specific heat at constant volume) and R (Universal gas constant) for air have been assumed to solve the problem.
samet mamat answered 7 months agoRelated Solutions
An insulated, rigid tank whose volume is 0.5 m3 is connected by a valve to a...
An insulated, rigid tank whose volume is 0.5 m3 is
connected by a valve to a large vessel holding steam at 40 bar,
480°C. The tank is initially evacuated. The valve is opened only as
long as required to fill the tank with steam to a pressure of 20
bar.
Determine:
(a) the final temperature of the steam in the tank, in °C, the
final mass of the steam in the tank, in kg, and
(b) the amount of entropy...
A rigid tank of volume 0.63 m3 initially has some air inside at 0.5 bar and...
A rigid tank of volume 0.63 m3 initially has some air inside at
0.5 bar and 300 K. A hole develops in the wall, and air from the
surroundings at 1 bar, 300 K flows in until the pressure in the
tank reaches 1 bar. Heat transfer between the contents of the tank
and the surroundings is negligible. Determine the final temperature
in the tank, in K. What is the entropy generation of the process?
(Please treat the air as...
A rigid tank of volume 0.63 m3 initially has some air inside at 0.5 bar and...
A rigid tank of volume 0.63 m3 initially has some air inside at
0.5 bar and 300 K. A hole develops in the wall, and air from the
surroundings at 1 bar, 300 K flows in until the pressure in the
tank reaches 1 bar. Heat transfer between the contents of the tank
and the surroundings is negligible. Determine the final temperature
in the tank, in K. What is the entropy generation of the
process?
(Please treat the air as...
A rigid tank of volume 0.63 m3 initially has some air inside at 0.5 bar and...
A rigid tank of volume 0.63 m3 initially has some air inside at
0.5 bar and 300 K. A hole develops in the wall, and air from the
surroundings at 1 bar, 300 K flows in until the pressure in the
tank reaches 1 bar. Heat transfer between the contents of the tank
and the surroundings is negligible. The final temperature is 350 K.
Use the transient state entropy balcance to find the entropy
generation of the process
A rigid tank of volume 0.3 m3 contains water initially at its critical point. The water...
A rigid tank of volume 0.3 m3 contains water
initially at its critical point. The water is now cooled to
150°C
a) What mass of water is in the tank?
b) Has the average specific volume of this water changed during
the cooling process?
c) Find the mass of liquid water and the mass of water vapor in
the tankat the end of the process.
d) Find the volume of liquid water and the volume of water vapor
in the...
A volume of 8.62 m3 of air in a rigid, insulated container fitted with a paddle...
A volume of 8.62 m3 of air in a rigid, insulated container
fitted with a paddle wheel is initially at 322 K, 0.4 bar. The air
receives 481 kJ by work from the paddle wheel. Assuming the ideal
gas model with cv = 0.71 kJ/kg • K, determine for the air the
amount of entropy produced, in kJ/K.
please show all work A 0.5-m3 rigid tank contains refrigerant-134a initially at 180 kPa and 40...
please show all work
A 0.5-m3 rigid tank contains refrigerant-134a
initially at 180 kPa and 40 percent quality. Heat is now
transferred to the refrigerant until the pressure reaches 700
kPa.
Determine the amount of heat transferred. (Round the final
answer to the nearest whole number.) The amount of heat transferred
is _____ kJ.
Also, show the process on a P-v diagram with
respect to saturation lines.
A well-insulated tank of 50 m3 volume initially contains 16,000 kg of water distributed between liquid...
A well-insulated tank of 50 m3 volume initially
contains 16,000 kg of water distributed between liquid and vapor
phases at 25°C. Saturated steam at 1500 kPa is admitted to the tank
until the pressure reaches 800 kPa. What mass of steam is added
(kg)?
A rigid tank of volume 0.75 m3 is initially evacuated. A hole develops in the wall,...
A rigid tank of volume 0.75 m3 is initially evacuated. A hole
develops in the wall, and air from the surroundings at 1 bar, 30°C
flows in until the pressure in the tank reaches 1 bar. Heat
transfer between the contents of the tank and the surroundings is
negligible. Determine the final temperature in the tank, in °C.
A 0.2 m3 rigid tank contains 5 kg of water (in any phase or phases) at...
A 0.2 m3 rigid tank contains 5 kg of water (in any phase or
phases) at 600 kPa. Which of the following values is closest to the
temperature of the water in the tank?
a)159 ℃
b)389
c)381
d)246
e)152
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Which of the following statements about a firm’s cost structure are correct? (a) Average cost measures...
- R programing question Generate two vectors x and y of length B=10000 so that each of...
- Describe TMDL in detail?
- Using the following array: //may be declared outside of the main function const int NUM_Games =4;...
- You are a new Athletic Director at a small Division II university. The athletic program that...
- Super enhancers have been shown to regulate the expression of oncogenes like Myc. These super enhancers...
- 6. (a) Is it economically fair (i.e., ethical) to buy low and sell high, globally? (b)...
ADVERTISEMENT