Team 10Air 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

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.

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 Sub-Concept

CategoryCategory Category 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

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 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

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 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

Concept Generation and Selection

Concept

Lab Reports Hardware

Overall Presentationof

Experiments

Number of

Experiments

SensorsPresentationof

Lab Reports

Apparatus

Concept Generation and Selection

Number of Experiments

1 Experiment 4-7 Experiments

13 Experiments

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

Concept Generation and Selection

Overall Presentationof Experiments

By Component By 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

Presentationof Lab Reports

StandardLab 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 ConditioningUnit

Other

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

SensorsGeneration and Selection

¶ Fully Instrumented with Redundancy– Most expensive

Fully Instrumented without Redundancy– Most feasible

Economically Instrumented– Least expensive but sacrifices

functionality

Updated Concept Flow-ChartConceptLab Reports Hardware

1 Experiment4-7Experiments13Experiments

Number ofExperiments OverallPresentationofExperiments Presentation ofLab Reports Apparatus SensorsBy ComponentByFundamentalStandardLab ReportTechnicalPaper

AC unitOther

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

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

Concluding Remarks