Special Problems 27-29

# Special Problems 27-29 - (c Is this process totally...

This preview shows page 1. Sign up to view the full content.

Special Problems for ME 200 - Spring 2011 Problems Due on April 1, 2011 SP27: Air is contained in a frictionless piston-cylinder device at an initial pressure of 110 kPa and an initial temperature of 607 o C. It undergoes a constant pressure process and rejects 490 kJ/kg heat to the surroundings, which is at a temperature of 0 o C. (a) Sketch the process on a T-s diagram with the initial, final and surrounding temperatures; (b) Find the change of entropy of the air for this process in kJ/kg-K;
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: (c) Is this process totally reversible? Why or why not? SP28: Calculate the total entropy generation (kJ/kg) associated with the process of SP27. SP29: Refrigerant-134a is flowing steadily through a throttle from 900 kPa and 34°C to 200 kPa. Heat is lost from the refrigerant in the amount of 0.8 kJ/kg to the surroundings at 25°C. Determine (a) the exit temperature of the refrigerant (°C) and (b) the total entropy generation during this process (kJ/kg-K)....
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern