ChE 3211 Design and Build a Heat Exchanger

1
ChE 3211Design and Build a Heat Exchanger

• Rashid Hasan
• Duane Long
• University of Minnesota Duluth
• Department of Chemical Engineering

2
Objectives

• Provide Hands-on Experience
• Provide an Open-ended Design Problem
• Develop a Sense of Engineering Judgment

3
Process

• Prepare a Detailed Schematic
• Solve Design Eq.
• Prelim. Uncertainty Analysis
• Present Pre-Lab Review

4
Process Contd.

• Build Your Heat Exchanger
• Test Your Design
• Calculate U
• Calculate Efficiency
• Prepare memo and Oral Presentation

5
Design Objectives

• Minimize Cost and Size
• Min. Weight and Length
• Enhance Econ rating

6
Specifications

• Tube Side Temp. Rise gt 20oC
• Fluid is Water

7
Materials

• Only Materials Locally Available
• Sched 40 PVC with Max Dia 4
• ¼ Copper Tubing
• ¼ Polyethylene Tubing
• Connections Must Accommodate ¼ Compression
  Fittings
• Use Common Building Materials

8
Construction

• According to Approved Design.
• Hand Tools Would be Made Available.
• Dept. Will Buy Materials Allow Time.
• Safety First, Sign Release.

9
Testing

• Rig Available for Testing.
• Your Exchanger Must Fit Our Rig.
• Make Arrangements With Duane to Use Rig.
• Carefully Gather Data.

10
Good Luck!