Team 10 Air Conditioning Experiment Members –Sean Gallagher –Pamela McDowell –Brian Davison –Prathana Vanarath Sponsors –Dr. Wexler –Dr. Advani Advisor –Dr. Keefe

Presentation Overview Introduction Method –Concept Generation –Concept Selection Schedule & Budget Questions

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)

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.

Approach 1Identifying customer(s) –wants –needs –constraints. 2Benchmark to identify –competitors –metrics –possible solutions. 3Generate concepts 4Compare, eliminate, expand and synthesize possible solutions based on the metrics. 5Proceed to a Go/No-Go review of the concepts. Build and test a prototype.

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

Constraints (Prioritized) Portable Schedule dictated by NCDA Budget set by Sponsor Separation of Project set by Sponsor

Concept Sub-Concept Category Sub-Category

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

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

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

Metrics Easy to Use –Visible Components Physically look at chosen apparatus and rate , 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

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.

Metrics Cont’d Quick –Time Target Value within set lab time (2 hrs) Easy Maintenance –Parts visibility Physically look at chosen apparatus and rate , 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

Concept Generation and Selection Concept Lab Reports Hardware Overall Presentation of Experiments Number of Experiments Sensors Presentation of Lab Reports Apparatus

Concept Generation and Selection Number of Experiments 1 Experiment4-7 Experiments 13 Experiments

Number of Experiments Generation and Selection 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

Concept Generation and Selection Overall Presentation of Experiments By ComponentBy Fundamental

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 

Concept Generation and Selection Presentation of Lab Reports Standard Lab Reports Short Lab Reports + Technical Paper

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 

Concept Generation and Selection Apparatus Air Conditioning Unit Other

Apparatus Generation 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 

Sensors Generation and Selection ¶Fully Instrumented with Redundancy –Most expensive  Fully Instrumented without Redundancy –Most feasible Economically Instrumented –Least expensive but sacrifices functionality

Updated Concept Flow-Chart

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

Working Model Lab Experiments –See Handout Air Conditioner –See apparatus

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

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

Estimated Budget

Concluding Remarks