1. Heat Transfer System By Team Awesome: Sub-team Awesomer

2. Heat Transfer Team Saleh ZeidanMechanical Engineer Dirk ThurMechanical Engineer Henry AlmironMechanical Engineer

3. Agenda Background Analytical Analysis Experimental Analysis Student Scenarios Student Experiences Risk Assessment

4. Plan Background Numerical Analysis Preliminary Design CFD Analysis BuildTest Compare Results

5. 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:

6. 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.

7. Sketches 2/12/14

8. 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.

9. 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

10. 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

11. Student Scenario 1 Create Computer and several heat sinks with CAD. Create Simscape Numerical Analysis and COMSOL CFD Analysis, compare results.

12. 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.

13. 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

14. Student Scenario 2 Create several heat sinks with CAD. Create Simscape Numerical Analysis and COMSOL CFD Analysis, compare results.

15. 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.

16. 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.

17. Risk Assessment IDRisk ItemCauseEffect Likelihood SeverityImportance Action of Management Owner 1Injury Human Error Minor to severe injury to student 133 Include clear instructions on how to use heated surface Team 2Damage of Property Placing flammable materials or materials with a low melting point near heated surface Property Damage 133 Always insure that the area around the heated surface is clear. Team

18. Question?