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

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

View Full Document Right Arrow Icon
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;
Background image of page 1
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 34C to 200 kPa. Heat is lost from the refrigerant in the amount of 0.8 kJ/kg to the surroundings at 25C. Determine (a) the exit temperature of the refrigerant (C) and (b) the total entropy generation during this process (kJ/kg-K)....
View Full Document

This note was uploaded on 04/23/2011 for the course ME 200 taught by Professor Gal during the Spring '08 term at Purdue University-West Lafayette.

Ask a homework question - tutors are online