Question
Asked Oct 29, 2019
16 views

Refrigerant 22 undergoes a constant-pressure process within a piston–cylinder assembly from saturated vapor at 5.0 bar to a final temperature of 30°C. Kinetic and potential energy effects are negligible.

Evaluate the work and the heat transfer, each in kJ per kg of refrigerant.

check_circle

Expert Answer

Step 1

Determine the value of specific internal energy and specific volume from property table of Refrigerant R22 corresponding to pressure at 5 bar and quality at 1.

 

help_outline

Image Transcriptionclose

и 3и, 3 227 kJ/kg и 3D, 30.0469 m'/kg

fullscreen
Step 2

Determine the value of specific internal energy and specific volume from property table of Refrigerant R22 corresponding to pressure at 5 bar and temperature at 30 deg Celsius.

 

help_outline

Image Transcriptionclose

и, - 245 kJ/kg 3 /kg = 0.0541 m v

fullscreen
Step 3

Determine the work don...

help_outline

Image Transcriptionclose

w P(v-) = 500 kPa(0.0541 m3/kg -0.0469 m'/kg = 3.6 kJ/kg

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Engineering

Mechanical Engineering

Thermodynamics

Related Mechanical Engineering Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: I need help answering problems 13, 14, and 15 pertaining to the print attatched below.

A: The print sheets attached shows the manufacturing or material part drawing of a mechanical part (her...

question_answer

Q: internal pressure on a thin pipe causes a stress . this stress is known as:  A. LONGITUDINAL STRESS ...

A: Longitudinal stress:  It is defined as the force acting along the longitudinal direction or in the a...

question_answer

Q: Technician a says radial ply tires are more rigid in the sidewall area than bias ply tires.  Technic...

A: Technician A is wrong because bias-ply tires have fibres of nylon  arranged in a diagonal manner to ...

question_answer

Q: piston–cylinder assembly contains air, initially at 2.6 bar, 134 K, and a volume of 2.6 m3. The air ...

A: Given data as per question

question_answer

Q: Water is entering a tank with diameter dt with a constant mass flow rate of ˙m. The tank has an open...

A: The velocity ate the outlet is given as the:

question_answer

Q: Hooke's Law defines the stress-strain relationship for an elastic material: s=Ee, where E=          ...

A: Hooke's Law defines the stress-strain relationship for an elastic material: s=Ee, where E= _________...

question_answer

Q: numerator gives the actual heat 2-3. Heat Exchange Between Oil and Water. Water is flowing at the ra...

A: Consider the heat exchanger to be counter flow type and draw the temperature profiles for the same.

question_answer

Q: Complete the following table for refrigerant-134a. Show your work and explain how you got your value...

A: From row 1 in the table, the given pressure, P = 80 psia.The enthalpy is given as, h = 78 Btu/lbm.Fr...

question_answer

Q: 1. Heat Loss from saturated steam at 121.1°C. The line is covered with 25.4 mm of insulation. Assumi...

A: For a 2 inch schedule 40 pipe,