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Fin Design for Maximum Thermal Dissipation

Fin Design for Maximum Thermal Dissipation. ME 450: Computer Aided Engineering Analysis Instructor: Dr. Nema Group Members: Wei-Yuan Chu, Brad Holtsclaw, Nick Metzger, Breanne Walters. Objectives.

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Fin Design for Maximum Thermal Dissipation

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  1. Fin Design for Maximum Thermal Dissipation ME 450: Computer Aided Engineering Analysis Instructor: Dr. Nema Group Members: Wei-Yuan Chu, Brad Holtsclaw, Nick Metzger, Breanne Walters

  2. Objectives • Maximize Thermal Dissipation by Designing a Fin System that will Draw Heat Away from the Engine Casing • Using Aluminum Alloy and Carbon Steel as Materials, we will analyze which material makes a better fin.

  3. Introduction • Engine is used to run a small blower • It is assumed that the motor casing will be subjected to cooling by a fan or other suitable ventilation. • Main area of concern is drawing heat into the fin system in order to dissipate it into the air.

  4. Complete Assembly Area of Interest

  5. Theoretical Background ;

  6. Theoretical Background (Cont.) Where: Assuming Convection Heat Transfer @ x=L

  7. Model Details (Solid Modeling) Solid Models were created in Pro-Engineer and Converted to IGES Files to Import into Ansys

  8. Model Details (Type I) • SOLID 92 Element Type • 5,829 Elements • 10,706 Nodes

  9. Model Details (Type II) • SOLID 92 Element Type • 16,196 Elements • 29,355 Nodes

  10. Model Details (Type III) • SOLID 92 Element Type • 16,196 Elements • 29,355 Nodes

  11. Boundary Conditions • Temperature of 65.56oC applied to Internal Surface to Simulate Operating Conditions

  12. Boundary Conditions (Cont.) • Ambient Temperature of 10oC • Film Coefficient of 100 W/m*oC (for cooling airspeed of 10 m/s)

  13. Results and Discussion:S.S. Temperature Distribution (Type I) – Steel Top Fins • Carbon Steel Top Fins • Max. Temp. in Fins is 55.078oC

  14. Results and Discussion: S.S. Temperature Distribution (Type I) – Aluminum Top Fins • Aluminum Top Fins • Max. Temp. in Fins is 60.218oC

  15. Results and Discussion: S.S. Temperature Distribution (Type II) – Steel Top Fins • Steel Top Fins • Max. Temp. in Fins is 50.885oC

  16. Results and Discussion: S.S. Temperature Distribution (Type II) – Aluminum Top Fins • Aluminum Top Fins • Max. Temp. in Fins is 55.777oC

  17. Results and Discussion: S.S. Temperature Distribution (Type III) – Steel Top and Side Fins • Steel Top and Side Fins • Max. Temp. in Fins is 50.885oC

  18. Results and Discussion: S.S. Temperature Distribution (Type III) – Aluminum Top and Side Fins • Aluminum Top and Side Fins • Max. Temp. in Fins is 55.777oC

  19. Results and Discussion: Transient Response(Type III) – Aluminum Top and Side Fins

  20. Results and Discussion: Top Fin Design Comparison Solutions STEEL ALUMINUM

  21. Results and Discussion: Side Fin Design Comparison Solutions STEEL ALUMINUM

  22. Results and Discussion: Heat Transfer Comparison for Type III Design Aluminum Steel

  23. Impact Statements • The Addition of Fins will Aid in the Heat Dissipation from the Motor Casing, making the Part More Safe for General Use • Motor Casing with Type III Fins Will have a Reduced Surface Temperature and Less of a Chance of Overheating the Interior Electronics and Causing a Fire

  24. Conclusions • Total Heat Transferred from Aluminum Fin is 245.83 W Greater than that from the Steel Fin. • Efficiency for Aluminum Fin is Greater than that of Steel. • Aluminum is the Best Choice for the Fin Material.

  25. References Nematollahi, Khosrow. "Oncourse, ME 450." Scheduled Reading and Assignments. IUPUI. 23 Apr 2007 <https://oncourse.iu.edu/access/content/user/knematol/Filemanager_Public_Files/ME450LectureNotesCh13r>. Incropera, Frank, David Dewitt, and Theodore Bergman. Fundamentals of Heat and Mass Transfer. 6th. Hoboken NJ: Wilet & Sons, 2007. Rengifo, Gustavo. "Oncourse, ME 546." ME 546 Resources, Project #1. IUPUI. 23 Apr 2007 <https://oncourse.iu.edu/access/content/group/SP07-IN-ME-546-26532/Lab%20Projects/Project%>.

  26. Questions

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