Heat Transfer System
By Team Awesome: Sub-team Awesomer
Heat Transfer Team
Heat Transfer Team
Saleh Zeidan
Mechanical Engineer
Dirk Thur
Mechanical Engineer
Henry Almiron
Mechanical Engineer
Agenda
 Background
 Analytical Analysis
 Experimental Analysis
 Student Scenarios
 Student Experiences
 Risk Assessment
Plan
Background
Numerical
Analysis
Preliminary
Design
CFD
Analysis
Build
Test
Compare
Results
Heat Sinks
 General Case for Fin (Assuming steady state, constant
properties, no heat generation, one-dimensional conduction,
uniform cross-sectional area, and uniform flow rate):
 Performance Parameters:
Problem
 Possible Problems Include:
 Making a mock computer, taking the chosen
components heat dissipation rate, and designing a heat
sink for that system.
 Maintaining an open air CPU at a constant
temperature using a heat sink.
Sketches
2/12/14
Analysis
 Design heat sink based off of given data, create in
CAD.
 Numerical: Students take equations given, and create
Simscape code to simulate heat build up in circuit.
 CFD: Import heat sink in CAD software, set boundary
conditions, and run.
Build and Test
 Student creates fins via rapid prototyping, purchasing
them, or by making it in machine shop.
 Apply fins to a heating surface set to output calculated
Q
 Test and compare results to analytical
Student Scenarios 1
 Objective: Design a cooling system for a computer
 Materials Provided:
 Hot plates with variable heat generation to simulate




components
Fan with variable wind speed.
Access to material to build heat sink
Temperature Sensors
Case
 Analysis:
Chosen CPU dissipation= 80 W, Power Supply dissipation= 75 W
Student Scenario 1
 Create Computer and several heat sinks with CAD.
 Create Simscape Numerical Analysis and COMSOL
CFD Analysis, compare results.
Student Scenario 1
 Students choose the three best performing heat sinks,
and build them.
 Place hotplates in case to simulate components.
 Run each sink for 10 min, allowing for a 10 min
cooldown between tests (1 hour per team in total).
 Compare to analytical results.
Student Scenario 2
 Objective: Create a Heat sink to cool CPU
 Materials Provided:
 Hot plate with variable heat generation to simulate CPU
 Fan with variable wind speed.
 Access to material to build heat sink
 Temperature Sensors
 Analysis:
Chosen CPU dissipation= 80 W
Student Scenario 2
 Create several heat sinks with CAD.
 Create Simscape Numerical Analysis and COMSOL
CFD Analysis, compare results.
Scenario 2
 Students choose the three best performing heat sinks,
and build them.
 Run each sink for 10 min, allowing for a 10 min
cooldown between tests (1 hour per team in total).
 Compare to analytical results.
Student Experience
 What Comparisons can be made from between the Analysis vs.
Experiment?
•
Compare the temperature determined in the analytical model to the
temperature measured in the experimental results.
•
Compare the heat transfer rate determined in the analytical model to the heat
transfer rate measured in the experimental results.
 What is the Student Learning or Getting Out of this Lab Experience?
• Students get to learn about technology and theories that are used in many
modern objects around us.
• This module would be outside the norm of other labs that they may have
preformed.
• It would reinforce heat transfer concepts that mechanical engineers have
learned.
Risk Assessment
Severity Importance
ID
Risk Item
Cause
Effect
Likelihood
1
Injury
Human Error
Minor to
severe
injury to
student
1
3
2
Damage of
Property
Placing
flammable
materials or
materials
with a low
melting
point near
heated
surface
Property
Damage
1
3
Action of
Management
Owner
3
Include clear
instructions
on how to use
heated surface
Team
3
Always insure
that the area
around the
heated surface
is clear.
Team
Question?