Water is contained in the frictionless piston-cylinder device shown below. The device has stops that keep the piston a minimum distance from the bottom of the cylinder. Initially, the water is at 200°C and 600 kPa. The water is then cooled to 120°C, at which point the piston is resting on the stops and the volume of the water is half of its initial volume. The atmospheric pressure is 100 kPa and the piston has a radius of 5 cm. a. Create a schematic of the device and sketch the boundary around the system that you will use to solve the next parts of this problem. What is in your system? b. What kind of assumptions/observations can you make about this system that will be important for a thermodynamic analysis? c. While the piston moves, this process is iso_? Once the piston stops moving, this process is iso__? Explain. d. Draw this process on P-v and T-v diagrams. Clearly indicate the initial state, the "intermediate" state when the piston just meets the stops, and the final state. Also label the pressure (or temperature) and specific volume on the appropriate axes for each of these states. e. Calculate the specific work, in kJ/kg, associated with the movement of the piston. Is this work done on or by the system of interest? f. Calculate the change in specific internal energy of the water from the initial state to the final state. Starting from a general energy balance and simplifying accordingly, calculate the net amount of heat transfer out of the system, per unit kg of water, from the initial to the final state. g. Water 200°C 600 kPa Q

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Concept explainers

Question

Water is contained in the frictionless piston-cylinder device shown below. The device has stops that keep
the piston a minimum distance from the bottom of the cylinder. Initially, the water is at 200°C and 600
kPa. The water is then cooled to 120°C, at which point the piston is resting on the stops and the volume
of the water is half of its initial volume. The atmospheric pressure is 100 kPa and the piston has a radius
of 5 cm.
a. Create a schematic of the device and sketch the boundary
around the system that you will use to solve the next parts of
this problem. What is in your system?
b. What kind of assumptions/observations
can you make about
this system that will be important for a thermodynamic
analysis?
c. While the piston moves, this process is iso______? Once the piston
stops moving, this process is iso______? Explain.
d. Draw this process on P-v and T-v diagrams. Clearly indicate
the initial state, the "intermediate" state when the piston just
meets the stops, and the final state. Also label the pressure
(or temperature) and specific volume on the appropriate axes
for each of these states.
e. Calculate the specific work, in kJ/kg, associated with the movement of the piston. Is this work done
on or by the system of interest?
f. Calculate the change in specific internal energy of the water from the initial state to the final state.
Starting from a general energy balance and simplifying accordingly, calculate the net amount of heat
transfer out of the system, per unit kg of water, from the initial to the final state.
g.
Water
200°C
600 kPa
Q

Expert Solution

Step 1

“Since you have posted a question with multiple sub-parts, we will provide the solution only to the first three sub-parts as per our Q&A guidelines, please repost the remaining sub parts separately.”

Given data:-

Initial condition of water=200°C and 600 kPa.

Final condition of water = 120"C,

the final volume of the water=half of its initial volume.

The atmospheric pressure = 100 KPa

the piston has a radius = 5 cm

To find:-

draw the boundary and specify the system
Assumption of the problem
specify the process of the system

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

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.

Similar questions