Sample Exam 3 (C)

# Sample Exam 3 (C) - EML 3100 Thermodynamics Fall 2012 Exam...

This preview shows pages 1–4. Sign up to view the full content.

EML 3100 Thermodynamics Fall 2012 Exam 3 Friday, November 30 Instructor: Philip Jackson Materials allowed: - Basic calculator and/or graphing calculator - Supplied formula and data sheets - CLOSED BOOK - CLOSED NOTES

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
EML 3100 Exam 3 Fall 2012 Friday, November 30 Name UF-ID
Problem 1 (20 points): Consider the ideal, steady-state gas-refrigeration cycle shown in the schematic below. The working fluid is helium and the following operating conditions are known. Use properties for helium at STP and assume that the specific heats are constants. T 1 = -125 °C, T 2 = 275 °C, T 3 = 50 °C, T 4 = -185 °C, P 2 / P 1 = 26, T L = 175 K, T H = 300 K (A) Complete the vertical axis of the phase diagram provided by labeling the mean effective temperatures, 𝑇 𝐿 and 𝑇 𝐻 , the min. and max. process temperatures, 𝑇 𝐿 and 𝑇 𝐻 , and the reservoir temperatures, 𝑇 𝐿 and 𝑇 𝐻 . (B) Calculate the mean effective process temperature, 𝑇 𝐿 .

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the 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