Post on 24-Jan-2016
description
12/02/99 Team #12 Optimized Magnet Support EML 4551
Optimized Magnet Support
EML 4551
SeniorDesign
Dr. Luongo
12/02/99
Deliverable #3
Team #12David MooreIrving ScottRoger PayanoTee Carter
Mentors: George Miller and John Miller
12/02/99 Team #12 Optimized Magnet Support EML 4551
Hybrid Magnet Project
Scope of the Project Product specifications WBS Design Selection Calculations
Final Design Design Drawings Problems and Actions Conclusion and Next
Steps
12/02/99 Team #12 Optimized Magnet Support EML 4551
Scope of the Project
optimize a cold-to-warm support structure for the super conducting-outsert of the 45-T Hybrid magnet
meet all mechanical requirements while minimizing the load on the refrigeration system
demonstrate the validity of the design (and supporting analyses) by constructing and testing a model of the support structure
12/02/99 Team #12 Optimized Magnet Support EML 4551
Product Specification
12/02/99 Team #12 Optimized Magnet Support EML 4551
Needs and Specifications
Column Height * (H) = 1000mm
Column Nominal Diameter * (Dnom) = 1100mm
Maximum Fault Load * (Fmax) = 6MN
Temperature at the cold end * (Tcold) = 1.8 K
Temperature at the warm end * (T warm) = 296 K
Temperature of the Ghe at the inlet * (Tin) = 4.5 K
12/02/99 Team #12 Optimized Magnet Support EML 4551
Needs and Specifications
Space constraints: size of magnet (see support specs.)
No Budget – minimize cost Allow for sleeve to aid the support while not
adding to the weight Calculate optimum height to introduce
helium Achieve maximum % heat transfer
12/02/99 Team #12 Optimized Magnet Support EML 4551
WBS
12/02/99 Team #12 Optimized Magnet Support EML 4551
WBS
12/02/99 Team #12 Optimized Magnet Support EML 4551
WBS
12/02/99 Team #12 Optimized Magnet Support EML 4551
Project Management
Initial Procedures:– Define and calculate the temperature profile
along the length of the structure, calculate the thickness variations and varying temperature profile, define max loads and along the length of the support structure
Communications List
12/02/99 Team #12 Optimized Magnet Support EML 4551
Project Management
Positions:– David Moore: Project Engineer– Irving Scott: Calculations Design Engineer– Roger Payano: Project Management Engineer– Tee Carter: Project Presentation and Report
Coordinator
12/02/99 Team #12 Optimized Magnet Support EML 4551
Project Schedule
12/02/99 Team #12 Optimized Magnet Support EML 4551
Design Selection
Generation of Ideas– Rough Scetches
Concept Screening Matrix– Concept Revisions
Concept Scoring Matrix Finalized Concept
12/02/99 Team #12 Optimized Magnet Support EML 4551
Concepts Generated
Sketches on Overhead
Ideas and Summary
– Flat Plate:• An outer shell without any marks on the inside surface
• Fits over existing support like a shell with a small space between the support column and the outer wall for cooling fluid to flow through
• Fluid flows from top to bottom
– Cross-Hatch: An outer shell with a diamond shaped pattern cut into the inner surface of the
shell Designed to increase the fluid’s flow time by increasing the distance from top
to bottom Fluid flows top to bottom
12/02/99 Team #12 Optimized Magnet Support EML 4551
Concepts Generated (cont.)– Rings:
Similar to the insides of resistive magnet Ring juts out from support column, is used as a cooling fin by drawing heat out from
column Fluid flows from top to bottom, and through holes in fin surface
– Dimples: Similar to the Riveted method. A flat plate with bumps pressed into the surface Bumps are pressed into contact with the support column Bumps are used to increase the travel distance of the fluid Fluid flows from top to bottom
– Riveted: A flat plate with rivets punched through the plate to the inner side Rivets are pressed into contact with the support column Rivets are used to increase the travel distance of the fluid by making the path non-linear Fluid flows top to bottom
12/02/99 Team #12 Optimized Magnet Support EML 4551
Concept Screening MatrixCONCEPTS
A B C D ESelection Criteria Dimple Cross- Riveted Ringed Smooth Hatching
Weight Support + - - 0 +
Thermal Efficiency + + - + 0
Thermal Efficiency + - 0 0 +
Resistance to Buckling + - 0 0 +
Ease of Repair + - - - +
Cost Effectiveness + - - - +
Compatibility with 0 0 0 0 0unit design
Flow of Coolant + + 0 0 -
Sum +’s 7 2 0 1 5Sum 0’s 1 1 4 5 2Sum –‘s 0 5 4 2 1
Net Score 7 -3 -4 -1 -4Rank 1 4 5 3 2
Continue Yes No No Revised Yes
12/02/99 Team #12 Optimized Magnet Support EML 4551
Revised Concept
Bored An outer cylinder with holes bored through it
longitudinally Cylinder is pressed closely to the support column Fluid flows from top to bottom through the bored
holes
From Ringed
12/02/99 Team #12 Optimized Magnet Support EML 4551
Concept Scoring Matrix Dimple Bored- Smooth
Out A B CSelection Criteria Weight R WS R WS R WS
Weight Support 10% 3 .3 3 .3 2 .2
Thermal Efficiency 20% 3 .6 1 .2 2 .4
Thermal Efficiency 10% 3 .3 2 .2 4 .4
Resistance to Buckling 10% 3 .3 2 .2 2 .2
Ease of Repair 5% 3 .15 1 .05 3 .15
Cost Effectiveness 20% 3 .6 1 .2 3 .6
Compatibility with 5% 3 .15 3 .15 3 .15unit design
Flow of Coolant 20% 3 .6 2 .4 2 .4
Total 3.00 1.70 2.50
Continue Develop No No
12/02/99 Team #12 Optimized Magnet Support EML 4551
Concept Selected
Dimpled– selected primarily because of its addition in
strength to the support column in both buckling resistance and in support strength.
– cheaper part, already in abundance within the Magnet Lab facility.
– it increases the efficiency of the system by increasing the travel distance of the fluid.
12/02/99 Team #12 Optimized Magnet Support EML 4551
Summary of Design
We performed calculations to determine necessary support area
We maximized the system cooling efficiency– heat load to the cryostat
– cooling efficiency for column
– optimize intake manifold location
12/02/99 Team #12 Optimized Magnet Support EML 4551
Calculations
1. )()*)(*)(( gxx TThPdx
dTTkTA
dx
d Column Temperature Eqn
2. )()]([*
gxxxgxgxP TThPTTCmdx
d Fluid Temperature Eqn.
1 .
])1)(1(
*1)[1(
1
2
1 2
MK
MKK
TTM
KT
M
K
Txgxxxxx
gx F l u i d T e m p e r a t u r e S o l u t i o n E q n
2 . ]*2[1
12 gxxxxxx TMTT
MT
C o l u m n T e m p e r a t u r e S o l u t i o n E q n
12/02/99 Team #12 Optimized Magnet Support EML 4551
Final Design
Coolant Entry Point: 100 mm from lower edge of cryostat (He enters at 4.5 K)
Thermal Profile of the column is linear Heat leak to cryostat from entry point:
optimized/balanced Column area is tapered/bell shaped
12/02/99 Team #12 Optimized Magnet Support EML 4551
Design Drawings
12/02/99 Team #12 Optimized Magnet Support EML 4551
Problems and Action Calculations turned out to be wrong for the purposes of this experiment and the specific profiles
The problem is in locating the optimal input location of the fluid into the shell so that it minimizes heat transfer into the cryostat
Again consult Dr. Shih, taking to him a more specific problem and not trying to manipulate formulas to fit our needs
A meeting will be set up with Dr. Luongo to assure the validity of our results
12/02/99 Team #12 Optimized Magnet Support EML 4551
Problems and Action
Assumptions were difficult to make
Coolant/Helium entry point was difficult to find
Creation of a Thermal Profile (eqn. )
Dr. Luongo helped us to make assumptions and checked calculations
Calculations were more in depth than Mentor needed
12/02/99 Team #12 Optimized Magnet Support EML 4551
Group Problems
Implementation of previously learned concepts
Vague knowledge of area of study of our project
Project sometimes got lost Communication, Communication,
Communication!!!!
12/02/99 Team #12 Optimized Magnet Support EML 4551
Actions
Set of Pre-assigned meetings for next semester
Pre-assigned weekly work schedule in the lab Make up days Implement everything we learned this
semester and previous semesters Prioritize
12/02/99 Team #12 Optimized Magnet Support EML 4551
Conclusion and Next Steps
12/02/99 Team #12 Optimized Magnet Support EML 4551
Conclusion
Group analysis of column is incomplete/complex
Mentors analysis is complete/simplified Mentors analysis will be called the final
theoretical design Actual physical design will create a
simple model of the theoretical
12/02/99 Team #12 Optimized Magnet Support EML 4551
Next Steps
Further analyze mentors data compared to our data
Turn design from complex, theoretical to simple, testable
Design thermal and stress experiment Contact John & George Miller about
manufacturing Compare test data to theoretical data
12/02/99 Team #12 Optimized Magnet Support EML 4551
Hybrid Magnet Project
Scope of the Project Product specifications WBS Design Selection Calculations
Final Design Design Drawings Problems and Actions Conclusion and Next
Steps
12/02/99 Team #12 Optimized Magnet Support EML 4551
Questions?
Contact D.I.R.T.: dmoore@eng.fsu.edu