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Team 10Air Conditioning
Experiment• Members
– Sean Gallagher– Pamela McDowell– Brian Davison– Prathana Vanarath
• Sponsors– Dr. Wexler– Dr. Advani
• Advisor– Dr. Keefe
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Presentation Overview
• Introduction• Method
– Concept Generation– Concept Selection
• Schedule & Budget• Questions
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Project Background New Curriculum for Mechanical
Engineers “ME 2000 Curriculum”
• Joint Laboratory Classes for Thermodynamics and Heat Transfer classes
• We must investigate 2 aspects of this issue:– Single lab apparatus for multiple labs
(Hardware)– Increased understanding of Thermodynamic and
Heat Transfer fundamentals (Lab Experiments)
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Mission
• Design a set of thermodynamic and heat transfer experiments for the University of Delaware Mechanical Engineering Undergraduate Laboratory, using a window air conditioner, that will be completed by April for approximately $4000.
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Approach
1 Identifying customer(s)– wants– needs – constraints.
2 Benchmark to identify – competitors – metrics – possible solutions.
3 Generate concepts
4 Compare, eliminate, expand and synthesize possible solutions based on the metrics.
5 Proceed to a Go/No-Go review of the concepts. Build and test a prototype.
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Customers Wants ¶ Dr. Wexler Dr. Advani Undergraduate students
Graduate students Judy Green: Educational Dr. Sun William Davison Manufacturers:
Hampden, Armfield Ltd. Other Schools: Georgia
Tech, Penn State
¶ Effective learning tool Easy to Use Self Evident Easy to set up Cost Effectiveness Multiple Purposes LabView compatible data
acquisition
Forgiving of incompetence Quiet Quick
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Constraints (Prioritized)
• Portable
• Schedule dictated by NCDA
• Budget set by Sponsor
• Separation of Project set by
Sponsor
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Concept
Sub-Concept Sub-Concept
CategoryCategory Category Category
Sub-Category
Sub-Category
Sub-Category
Sub-Category
Sub-Category
Sub-Category
Sub-Category
Sub-Category
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Problem Description
• Hardware– Develop a lab
apparatus using a window air conditioner and sensors
– Develop a Data Acquisition Program
• Lab Experiments
– Develop a set of experiments that include a variety of Thermodynamic and Heat Transfer Principles
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Systems Benchmarking(Major Competitors)
• Hampden Basic Refrigeration Cycle Trainer• Hampden Basic Refrigeration Cycle and Heat
Pump Trainer• Hampden Refrigeration Demonstrator• Hampden Heat Pump Trainer• Armfield Heat Exchanger Training Equipment
Series• Armfield Heat Transfer Teaching Equipment Series• Armfield Temperature Measurement Bench• Others
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Functional Benchmarking
• Omega Engineering - Sensors– Carries every type of sensor we will require– Catalogs are an excellent technical reference
• Optrand - Sensors– Fiber-optic pressure transducer
• Air Conditioning Manufacturers - AC units• University of Delaware HVAC - sample AC
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Metrics
• Easy to Use– Visible
Components• Physically look at
chosen apparatus and rate 1 - 10, target value 10.
– Accessible Components
• same as above
• Cost Effectiveness– Low initial price
• Target value $4000
– Low operating cost• Target value $22.
– Durable• Target value 10
years
– Parts availability• Target value: 2
week lead time
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Metrics Cont’d• Self Evident
– Clear Lessons/Objectives
• Survey scored 1 - 5: target value 5
– Logical Procedure• Survey scored 1 - 5:
target value 5
• Quiet– Low noise level
• Target value of 60 dB
• Effective Learning Tool– Fun– Number of Fundamentals– Clear Lessons/Objectives– Real World Connection to
Students– Keeps Students’ Interests– Hands-on/Interactive
• All are evaluated yes or no, the target value is yes.
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Metrics Cont’d• Quick
– Time• Target Value within set
lab time (2 hrs)
• Easy Maintenance– Parts visibility
• Physically look at chosen apparatus and rate 1 - 10, target value 10.
– Parts availability• Target value: 2 week
lead time
• Forgiving of Incompetence– Years of experience
• Target value 2 years engineering experience
• Easy to set up– Time
• Target value 15 minutes
– Self Contained• Target value 1
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Concept Generation and Selection
Concept
Lab Reports Hardware
Overall Presentationof
Experiments
Number of
Experiments
SensorsPresentationof
Lab Reports
Apparatus
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Concept Generation and Selection
Number of Experiments
1 Experiment 4-7 Experiments
13 Experiments
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Number of ExperimentsGeneration and Selection
4 - 7 Experiments– Easy to set up– More effective learning
tool than and Multiple Purposes
¶ One Experiment using different sensors– Not an effective
learning tool– Difficult to set up
13 Experiments– Easy to set up– More effective learning tool than – Multiple Purposes
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Concept Generation and Selection
Overall Presentationof Experiments
By Component By Fundamental
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Overall Presentation of Experiments
Generation and Selection¶ By Fundamental
– Self Evident: clear lessons
– Quick: can be completed in lab time
By Component– Self Evident: clear
lessons– Quick: can be
completed in lab time
– More effective learning tool than
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Concept Generation and Selection
Presentationof Lab Reports
StandardLab Reports
Short Lab Reports+
Technical Paper
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Presentation of Lab Reports
Generation and Selection¶ Standard Lab
Reports– Self Evident: clear
lessons
Short Lab Reports & Technical Paper– Self Evident: clear
lessons – More effective
learning tool than
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Concept Generation and Selection
Apparatus
Air ConditioningUnit
Other
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ApparatusGeneration and Selection
¶ Other– Quick: can be
completed in lab time
– Easy to set up: can be set up in less than 15 min.
Air Conditioning Unit– Quick: can be
completed in lab time– Easy to set up: can be
set up in less than 15 min.
– More effective learning tool than
– More self evident than
– Easier to use than – More cost effective
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SensorsGeneration and Selection
¶ Fully Instrumented with Redundancy– Most expensive
Fully Instrumented without Redundancy– Most feasible
Economically Instrumented– Least expensive but sacrifices
functionality
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Updated Concept Flow-ChartConceptLab Reports Hardware
1 Experiment4-7Experiments13Experiments
Number ofExperiments OverallPresentationofExperiments Presentation ofLab Reports Apparatus SensorsBy ComponentByFundamentalStandardLab ReportTechnicalPaper
AC unitOther
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Final Concept Selection
• Number of Experiments– 4 - 7 Experiments
• Overall Presentation of Experiments– By Components
• Apparatus– Air Conditioning Unit
• Presentation of Lab Reports– Short Lab Reports
& Technical Paper
• Sensors– Fully Instrumented
without Redundancy
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Working Model
• Lab Experiments– See Handout
• Air Conditioner– See apparatus
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Actual Progress• Wanted to be here:
– Develop Heat Transfer Lab Fundamentals
– Develop Thermodynamic Lab Fundamentals
– Investigate Educational Values/Criteria
– Evaluate Key Equations
– Obtain Sample Air Conditioner for Study
– Examine Possible Sensor Placements
• We are here:– Applied Heat Transfer
fundamentals to labs
– Applied Thermodynamic fundamentals to labs
– Researched and applied these values to labs
– Lab write-ups made
– Sample Air Conditioner used in determining labs
– Possible locations determined
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Not Too Detailed Schedule• January
• February– Compile and finalize lab manuals– Select and purchase required equipment
• March– Assemble lab apparatus– Test and evaluate labs
• April– Complete project
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Estimated Budget
Unit Unit Price Quantity Total Price
Air Conditioner 250.00$ 1 250.00$
Lab Cart 100.00$ 1 100.00$
Relative Hum idity S ensor 225.00$ 4 900.00$
M ass F low Sensor 1,000.00$ 2 2,000.00$
Thermocouples 25.00$ 12 300.00$
Pressure Transducer 200.00$ 8 1,600.00$
Various Pipe Fittings 10.00$ 10.00$
W iring and Connectors 10.00$ 10.00$
M isc. Fabrication Costs 25.00$ 25.00$
Estim ated Budget 5,195.00$
Fully Instrumented
Estim ated Budget: Team 99.10, ME Air Conditioning Lab
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Concluding Remarks