{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Midterm-1

# Midterm-1 - ChE 303 Midterm 1-Fall 2011 When writing your...

This preview shows pages 1–2. Sign up to view the full content.

ChE 303- Midterm 1-Fall 2011 When writing your solutions, add occasional phrases or sentences to describe your thought process. This will help me assign partial credit. Total points=60. Problems 1 carries 25 points, problem 2 carries 15 points and problem 3 carries 20 points 1. In a manufacturing process, a transparent film is being bonded to a substrate as shown in the sketch. To cure this bond at a temperature T O, a source of radiation is kept at the interface between the film and substrate. This radiation source provides a constant heat flux of W/m 2 . The back of the substrate is maintained at temperature T 1 while the top surface of the film is exposed to air at temperature . The air has a convection heat transfer coefficient of h. a) Draw the thermal circuit representing the steady-state heat transfer situation. Be sure to label all the resistances and temperatures. (5 points) b) If W/m 2 and W/m 2 are the fluxes through film and substrate respectively. Use energy balance to write the relationship between

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