Scientific and Technical Writing 科技英语写作

PAGE

1

PAGE

37

ScientificandTechnicalWriting

Contents

ChapterOne:TypesandFormatsofScientificandTechnicalWriting

SectionOne:TypesofScientificandTechnicalWriting(P2)

SectionTwo:FormatsofScientificandTechnicalWriting(P3)

ChapterTwo:TheProcessofScientificandTechnicalWriting

SectionOne:WritingApproach(P20)

SectionTwo:WritingProcess(P20)

ChapterThree:TipsforScientificandTechnicalWriting

SectionOne:TheCharacteristicsofScientificandTechnicalWriting(P32)

SectionTwo:TheOrganizationandDevelopmentofScientificandTechnical

Writing(P35)

ChapterFour:OralCommunication

SectionOne:MeetingPeople(P42)

SectionTwo:AttendingLectures(P43)

SectionThree:PresentationofResearchingInformation(P44)

ChapterOne:TypesandFormatsofScientificandTechnicalWriting

SectionOne:TypesofScientificandTechnicalWriting

MemoReports

Thememoreportisthemostcommonandprevalenttypeoftechnicalwritingfoundinindustrytoday.Itisaninformalreportandisstrictlyaninternaltypeofcommunication.Thekeytowritingeffectivememoreportsisbrevityandsimplicity.

FormalReports

Formalreportsarethecomprehensivedocumentationofmajortechnicalprojects.Bythenatureoftheirscopeandimportance,theytendtobelonganddetailed.Theactualscopeandcomplexityofanyparticularformalreportwilldependonthesubstanceofthereportitself.Mostformalreportsareoutsidereportsfromonecompanytoanother.Theycovermanyofthesamesubjectsasinsidememo-reports.Theformatvariesgreatly,dependingonthecompany’sstandardsandthenatureofthereport.

Proposals

Aproposalisasellingdocumentthatadvocatesthepurchaseofacompany’sproductsorservices.Itcanalsocomefromwithinasinglecompanyandadvocatethepurchaseofequipmentorhiringofadditionalpersonnel.Proposalsfromonecompanytoanothergenerallytendtobelengthyandcomplex.Proposalsthataregeneratedwithinasinglecompanytendtobebriefandsimple.Ineithercase,thereaderswillbeprimarilymanagerial.

Ifaproposalissolicited,itwillbeamirrorofanRFP(requestforproposal).Iftheproposalisunsolicited,itwillreflectthethinkingofthefirmseekingthecontractanditsestimateofwhatthereceivingcompanyrequires.

Manuals

Technicalmanualisadocumentationofaprocessormechanismoracombinationofthetwo.Throughdocumentationinthemanual,theelementsofaprocessormechanismaredefinedanddescribed,andinstructionsforitsuseareprovided.Thisusecancoversuchthingsasoperation,maintenance,servicing,andrepair.

JournalArticles

Fewaccomplishmentswillenhanceyourprofessionalstandingasmuchasbeingpublished.Whenyoupublishanarticle,ittellsyourprofessionalcolleaguesnotonlythatyouhavesomethingoriginalanduniquetocontributetoyourfield,butalsothatitisimportantenoughtobepublished.Contrarytopopularopinion,thetradejournalsarealwaysinterestedinfreshnewprofessionalarticles.Newideas,newproducts,newfindings,andexperimentsarethelifebloodofthetradepublishingbusiness.Itisthroughtheprofessionalandtradejournalsthattheprofessional,scientific,andacademiccommunitiescommunicatewithoneanother.

Thekeytoagoodjournalarticleisitsorganizationandclearpurpose.Outlininganarticleiscrucialtoitsgettingpublished.Thesubjectmustbeinaccordancewiththejournal’sparticularsubjectmatter,andthearticlemustpublishnewandinterestinginformationforitsreaders.Mostprofessionalandtradejournalshavewrittenguidelinesfortheirpublishingexpectations.Eachisuniqueinitspersonalityandstyle.

SectionTwo:FormatsofScientificandTechnicalWriting

1.MemoReports

PartsofMemoReports

Thetypicalmemoreportismadeupofthefollowingparts.

1.Headinginformation:

Headinginformationgivesthereaderthewritingsolution.Itspecificallytellsyourreaderthedateofthememoreport.Thisdateiscrucialtokeepingfiles.Ittellstowhomthememoisbeingwritten.Thisisusuallyasinglereader,butitalsomaybeagrouporanumberofindividuals.Theheadinginformationtellsthereaderwhowrotethememoreport.Thisagaincanbeeitherasinglepersonoragroup.Andfinally,headinginformationgivesthesubjectofthereport.

Headinginformationismadeupoffourbasicheadings,asfollows:

Date:(thedateofthememoreport)

To:(towhomthememowaswritten)

From:(whowrotethememo)

Subject:(thesubjectofthereport)

Theorderofthesetopicsisnotimportant,butallfourtopicsmustbeincludedintheheading.

Sometimesthereceiverofthememoreportisasingleperson,butphotocopiesaredistributedtootherswhoarelessdirectlyinvolvedinthematterathand.Thenamesofindividualswhoreceivecopiesarenotedintheheadinginformationaftertheabbreviation“cc:”(for“carboncopy”).

2.Purposestatement

Thestatementofpurposetellsthereaderwhythememowaswritten.Effectivestatementsofpurposearealwaysdirectandconcise.Theysacrificesubtletyfordirectness.

3.Backgroundstatement:

Abackgroundstatementshouldbebriefandconcise.Itprovidesthereaderwithanoverviewoftheeventsandcircumstancesthathaveledtothereport.Italsoallowsarecapandreminderforthereaderwhoreferstothememoreportatalaterdate.

4.Discussion:

Thediscussionisanobjectiveandfactualwrittencommunicationoftechnicalmessage.Itisadetailedandcompletemessageaboutthesubject.Thediscussioniswherethebasicorganizationalpatternandoutlineofideasareputintowrittenform.

5.Conclusion:

Conclusionsarethereasonsorcausesoftechnicalconditionsandsituations.Theseareyourfindingsorresultsaboutwhateveritisthatyouarewriting.

6.Recommendations:

Recommendationsarethesuggestionsbasedontheconclusions,andprofessionalopinionsaboutwhatshouldbedone.

2)Typesofmemoreports:

1.Feasibilityreports:

Feasibilityreportistoshowwhetherundertakingacertainprojectorpathofactionwillhavesuccessorfailure.Thelikelihoodofsuccessmustbeweighedagainsttheoddsforfailure.

Thereportpresentstheevidenceforthatsetofoddsfororagainstthesuccessofthereport.

Thestructureofthistypeofreportisasfollows:

Memo-reportheadings

Purpose

Background

___Proceduresandmethods

___Alternatives

Discussion

Conclusions

Recommendations

SampleFeasibilityReport:

Date:_______________

To:________________

From:________________

Subject:Shouldmotor-drivenlinearactuatorsreplacedouble-acting

Hydrauliccylindersonpinchrollers?

Purpose:

Thepurposeofthisreportistostudythefeasibilityofhavingmotor-drivenlinearactuations(ball-screwstyle)replacethedouble-actinghydrauliccylindersonthepressure-heatedpinchrollersforthe24’’counter-toplaminator.Feasibilityisbasedoneconomicandwork-effectivenessfactors.

Background:

About22yearsago,AcmepurchasedtheOtto24”laminatorcurrentlybeingusedattheMelvilleplant.

Thismachineusesthreesetsofhydrauliccylinders(2perpinchroll)toexert800psiasthelaminatedtopexitsthegluerandentersthepressarea.

Dependingonwhatsizethicknesstheoveralltopwillmeasure(1/4”,3/8”,1/2”,3/4”),youmustmanuallyadjusttheclevisendofthesecylinders.

Thisresultsinaset-uptimeofabout90minutes.Operatorcontrolsforthepinchrollersare“full-extend”or“full-extract”withnomiddlesetting.

Leaksinthisexistingsystemareaconstantproblem.Thepetroleumbasedoilattacksthegluethatholdsthelaminatetothebasewood.

Discussion:

Currenttechnologyinlaminatingmachinesusesmotor-drivenball-screwactuatorsinplaceofhydrauliccylinders.Thesemotorsuseaclosed-loopfeedbacksystemthatallowsforPLC(programmablelogiccontroller)basedcontrol.Consequently,set-uptimedecreasesfrom90minutesto5minutes.Becausetheseactuatorsaremotordriven,wecancompletelyeliminatethehydraulicsystem.

Theestimatedcosttoremovetheexistinghydraulicsystemandinstallthenewmotor-drivenactuatorshasthefollowingbreakdown:

Motoractuators&controllers……….$265,500.00

Removal&installationlabor…………$93,300.00

PLCoperatortraining………………….$7,500.00

First-yearcost……….$366,300.00

The24”counter-toplaminatorcurrentlyproduces4.4millionofproductin2,000hoursofoperationataproductionrate-per-minuteof$35.67.Thisisbasedonusingthefigureof85minutesofsavedset-uptimeandanaverageof7.5set-upsperweekona50-weekproductionschedule.

Theprojectedincreasesinproductionareasfollows:

Annualset-ups:……375(507.5)

Totalminutessaved……………31,875(37585)

Increasedproduction……………….1,136,981.20

($35.6731,875)

Additionalset-upadjustmentfactor…………0.94

Adjustedincreasedproduction……$1,068,762.30

($1,136,9810.94)

Conclusions:

Atinvestmentof$366,300.00ofnewmotor-drivenactuatorswillincreaseproductionatarateof$1,068,762.30.Thisequatestoapaybackperiodof17.2weeks.Assumingbothsystemsrequirethesameamountofmaintenancetime,additionalsavingswillresultfromlessproductdamagefromhydraulicleaks(estimatedat$87,000.00).AnotheradditionalfeatureistheabilityoftheOttolaminatortorunshortorders(lessthan100pcs)becauseofreducedset-uptime.

Recommendations:

Themotor-drivenlinearactuatorsshouldbepurchasedandinstalledassoonaspossible.

2.Insideproposals:

Aninsideproposalisareportingdocumentthatstaysinsidethefirm.Itspurposeisto

persuadethereadertoalloworfollowaparticularplanorcourseofaction.

Thestructureofinsideproposalisasfollows:

Memo-reportheadings

Background

Proposal

Costbreakdown

Proposedschedule

SampleInsideProposal

Date:______________________

To:______________________

From:______________________

Subject:Hand-heldtachometersforfieldsalesengineers

Background:

Forthepastyearithasbecomeapparentthatourfieldsalesengineerswouldgreatlybenefitfromhavinghand-heldtachometerstomeasurerotationalshaftspeedandlinearlinespeed.

Overthepastyear,Ihavehadnofewerthan16instanceswhereIhavehadtorelyonacustomer’swordorhis“bestguess”aboutthespeedofamotor,conveyor,orothermechanicaldevice.Evennameplatedataarequestionable,especiallyonolderequipment,becauseofyearsofmachinemodifications.Inmostofthesecases,materialswerereturnedbecauseincorrectspeeddatawereusedtocalculategearboxandvariablefrequencydrivesizes.Asaresult,customerprojectswererequiredtobeheldupwhilecorrectspeedreadingscouldbetakenandthecorrectmaterialshipped.

Proposal:

Iproposethateachofthesixfieldsalesengineersbeissuedamodel#610electronichand-heldtachometerwithcarryingcase.

CostBreakdown:

Ifeachsalesengineeraverages16returns(Thisisaconservativeestimatebasedonexperience)becauseofspeedmiscalculations,thefieldwillgenerate96RGRs(ReturnGoodsRequests).WeknowfrominternalauditsthateachRGRispresentlyaveraging$45.00.Amodel#610tachometerlistsat$375.00each.Wewouldneedsixofthem.Considerthefollowingbreakdownincosting:

Sixmodal#610tachometers(6$375.00)………….$2,250.00

CostofRGRs(96$45.00)…………$4,320.00

Thisisaninitialsavingsoverthefirstyearafterpurchaseof$2,070:

$4,320.00$2,250.00……………….$2,070.00

SuggestedTimeFrame:

SinceallofthesalesengineerswillbeinforthecorporateofficemeetingduringthesecondweekofSeptember,thiswouldbeagoodtimetogiveeachsalesengineeratachometerandschedulethemforaone-hourtrainingsessionwiththetachometer.

3.Status/progressreports:

Thistypeisweekly,monthlyandquarterlyperiodicreport,allowingmanagementtostay

informedonstaffprogresswithongoingtechnicalworkandprojects.

Thestructureofthereporttendstobeabbreviated,asfollows:

Memo-reportheadings

Statusofprojects

SampleStatusReport

Date:____________________________

To:____________________________

From:____________________________

Subject:Statusreportforweekofx/x/19xx—

Plasticretainerfor#622bearing

R&DreceivedthefinalCADdrawings.Thecorporatelegaldepartmenthasfiledthepreliminarypaperworkforpatentprotection.Finalcostfortheextrusiondiesamountedto$125,000.00.ProductionshouldbegininearlyJanuary.

Hydro-sealfor#622bearing:

Earlytestsshowthattheethylenepropylenesealdevelopedseriousleakageproblemsatrotationalspeedover4000RPM.Additionaltestsarescheduledfornextweek.

Pump-Masterinnerrace:

Sixadditionalfieldreportsarrivedthisweek,bringingthetotalto88reports.ThesereportsareonthechromiumplatingonthePump-Masterinnerraceanditsflakingandblisteringathightemperature(100cto120c).Allthereportsarelimitedtothoseinnerraceswith2.00”boresorless.PlatingU.S.A.(oursubcontractor)hasbeennotifiedandbatchnumbershavebeensubmitted.

Newrollerbearing#1221:

ThetestinglabhasreportedthatafaultyhydraulicmeteronourSide-Thrusttesterresultedintheprematurerejectionofthe#1221rollerbearing.Designspecificationscallfor75lbsofsidethrustwithsafetyfactorofX2.Retestinghasalreadybegun.

4.Testreports:

Thistypeofreportisaninformalandinsidereportonaspecific,one-of-a-kindtestor

testingproblem.Thisisoftenadetailedaccountofthetestresultsforaparticularpartof

item.Oritcouldbeareportaboutaproblemwithtestingitselforsettingupatest

procedure.

Thestructureofthistypeofreportisasfollows:

Memo-reportheadings

Purposeorproblem

Conditions

Proceduresandmethods

Conclusions

Recommendations

SampleTestReport

Date:__________________________________

To:__________________________________

From:__________________________________

Subject:VariableFrequencyDriveComparisonTest

PurposeofTest:

Thistestcomparesthebreakdown(saturation)frequencyandcurrentoutputofthetopthreebrandsofvariablefrequencyelectronicdrives.Thecomparisonsareunderacontrolledenvironmentwithidenticallineandloadconditions.

Conditions:

AllthreedrivesusePWM(PulseWidthModulation)technologywithmicroprocessorfrontendsforprogrammingandsettingparameters.Allwereprogrammedfor400Hzmaximumfrequencywitha60Hzknee/voltagesetting.Alldrivesuseacommonlinepowerof460V,3-phase,and60Hz,with30Acurrent-limitingfuses.Alldriveshaveidenticalmotorloadsratedat15HP,1800RPM,460V,and3-phase.AllhaveNEMA7and9hazarders-locationmotorratingforClassI,Div.I,andGroupCandD.

Procedure:

Currentwasmeasuredwithaclamp-onACampmeteronthe0-30Ascalesetting,withreadingsontheincomingBphaseofeachdrive.Agroundingconductorwasconnectedtothemotorframeoneachchassisandbuildinggroundconductor.Eachelectronicdrivewasstartedat0Hzandincreasedin1HzincrementsuntiltheampmeterreadFLA(FullLoadAmperage).Inthistest,theFLAwas21A.Individualcurrentreadingswerealsomadeateachmotor’sdesignedmaximumfrequency(172Hz).

Conclusions:

BrandCprovidedthebestperformance,withamaximumfrequencyof206Hzandaminimumcurrentdrawof18-7Aatthedesignedmaximumfrequencyof175Hz.

Recommendations:

StandardizeonbrandCforall175Hzdesignapplicationsusingthe1800RPM,15HPmotor.

5.Tripreports:

Atripreportprovidesapermanentrecordofthetripforfuturereference.Itrecordsthe

actionstakenandaccomplishmentsduringthetrip.Theexperienceofoneemployeeonthe

tripbecomesavailableforotherpersonnelinthefuture.

Thestructureofatripreportisasfollows:

Memo-reportheadings

Purposeofthetrip

Conclusion

Actionstaken

Recommendations

SampleTripReport

Date:____________________________

To:____________________________

From:____________________________

Subject:AlbuquerqueVoTechCenter(A.V.C.)

PurposeoftheTrip:

InSeptember,JimVaughan,oneoftheA.V.C.instructors,toldusthatthefivehydraulicstudent-trainingstationshehadpurchasedinAugustofthisyearhaddevelopedleaks.Hetriedsimplytotightenthefittingsandgasketcovers,butthisdidnotstoptheleaks.Withnolocaltech-repintheAlbuquerquearea,Imadetheside-triptoAlbuquerqueonmywaytothePhoenixTrainingProductsshow.

Conclusions:

Allfivestudent-trainingstationshavecomponentsthatleakedatthepointwherethebrassfittingsthreadintothesub-basesandmanifolds.Onfurtherexamination,Ifoundthatthesefittingsweremadewithouttheuseofsomesortofpipe-threadcompound.FourofthefivetrainingstationswereleakingfluidatthePlexiglascoversonthefrontofthereservoirs.

ActionsTaken:

Iremovedallthefittingsoneachtrainingstationandused3/8-inchtapetosealthefittingsinthesub-basesandmanifolds.Pressuretestsshowedthatallleaksweresealedwiththisaction.

Idrainedeachreservoirandremovedthecovertofindthatinallcases,the1-inchgasketsusedtosealthereservoirwallandthePlexiglascoverhadtorntheboltholesthatruntotheoutsideedge.Ihand-cutnewcovergasketsandhand-punchedtheboltholes.Afterinstallingthegasketsandcovers,Irefilledthereservoirsandtestedthemundernormaloperatingpressure.Allleakswerestopped.

Recommendations:

Teflontapemaynotbetheoptimumsolution.Wemustusepipe-threadjointcompound

onfuturetraining-stationmanufacturing.Wemustalsoconsiderthethermalexpansion

betweenthebrassfittingsandthesteelsub-bases.

WemustpurchaseaholepunchofcorrectsizeformakingtheboltholesinthePlexiglas

Covergasket.Asanalternative,wecouldpossiblyuseadrillpressandjigtopre-drilltheseholeswithaccuracyandcare.

2.FormalReport

Becauseformalreportsaremorecomplexthanmemo-reports,theyrequireamoreformallystructuredformat.Thebasicelementsofaformalreportareasfollows:

Titlepage

Tableofcontents

Executivesummary

Body(includingallheadings)

Conclusions

Recommendations

References

Bibliography

Appendixes

Glossary

Index

Notallformalreportswillrequireeveryelement.Insomecases,variouspartsofthese

elementswillbecomeseparatepartsofthereportandwillstandalone.

1)TitlePage

Thetitlepagecanbearrangedinanumberofways,butthebasicelementsmustbethere.The

basictitleelementsareasfollows:

Thefulltitleofthereport

Thenameofthewriter

Thewriter’scompany

Thepersonorcompanyreceivingthereport

Thedateofthereport

2)TableofContents

Thetableofcontentsallowsyourreadertofindthemajorelementsofyourreporteasily.The

tableitselfislocatedatthefrontofthereportjustafterthetitlepage.Itisadirectreflection

ofyouroutlineandisderiveddirectlyfromit.Thetableofcontentscontainsallprimaryand

secondaryheadingsandtopicsastheyappearedinyouroutline.

Tablesandfiguresarealsocontainedinthetableofcontentsbutarelistedseparatelyafterthe

topicheadings.Theyarestillpartofthecontentsofthereport,buttomakethetableof

contentsclearer.

3)ExecutiveSummary

Inrecentyears,theexecutivesummaryhasbecomethemostcommonvehicleinreportstogiveacondensedoverviewofthereportforexecutiveandmanagerialaudience.Itshouldbelimitedtoamaximumofoneortwopages.Theprimarypurposeoftheexecutivesummaryistocondensethereportforthosewhodonothaveeitherthetechnicalknowledgeorthetimetoreadtheentirereport.

Theinformationintheexecutivesummaryislimitedtothebackground,findings,andconclusions,alongwiththerecommendationsofthereport.Thissummaryshouldalwaysbeplaceddirectlyafterthetableofcontents.Theexecutivesummaryshouldclearlysummarizeandcondensethefollowinginformation:

Backgroundofopportunityorproblem

Profitand/orcostimplications

Findingsand/orconclusions

Recommendations

4)MainbodyorDiscussion

Themainbodyisthecompleteaccountofwhatyouarewritingabout.Themainbodyis

oftencalledadiscussionbecause,asinanoraldiscussion,youwillconvertyourstructured

ideasinoutlineformtoflowing,conversationalprose.

Themainbodyofthereportcoversallthetechnicaldetailsofthesubjectaswellasallthe

administrativeresults.Thispartmaycontainanyoneorallthethreeelements:definition,

descriptionandinstruction.Theorganizationofthereportmustreflectabsolutelyandin

detailtheoutlinepreviouslyestablished.

5)Conclusions

Theconclusionssectionputstheresultsandfindingsofthediscussioninoneplaceforthe

reader.Theemphasishereisonwhathavebeenfoundinlightofthepurposeofthereport

anditsimplications.

6)Recommendations

Therecommendationssectionistheopinionbasedontheevidenceandtheexpertiseasa

professional.Itiswhatthewriterfeelisthebestcourseofactionbasedonthereport’s

conclusionsandfindings.

7)References

SampleformalReport

TitlePage:

High-Frequency400HzACasanAlternativetoStandard

Low-Frequency60HzACforFluorescentLightingLoads

By

L.A.Mielcarz

TechnicalDesignConsultant

Preparedfor

XYZDevelopmentCorporation

Chicago,Illinois

July1,19XX:

TableofContents:

ExecutiveSummary…………………1

DetailedDiscussion…………….…..3

PurposeofStudy………………….3

Background………3

LightingLoad…….3

BallastHeat……….4

FixtureCostComparison…………….4

FixtureMaintenanceComparison……4

GeneratorCostsandSpecifications….4

InstallationCosts…….4

CostAnalysisofBothSystems……...4

Conclusions………..4

Recommendations…………………4

Appendixes…………6

LightingFixtureEnergyCostTable…….6

BallastHeatTable……….6

FixtureCostTable……….6

FixtureMaintenanceTable………………6

Bibliography…………7

Glossary……………..7

Index………………..7

ExecutiveSummary:

Thepurposeofthisreportistodeterminethefeasibilityofaself-generated,high-

frequencyACpowersourceforfluorescentlighting.

Recenttechnologyinhigh-frequencygenerationforfluorescentlightingloadshas

provensuccessfulinvariousEuropeancountries.Suchinstallationscanreduceair-

conditioning(cooling)loads,initialcostoflightingfixtures,fixturemaintenance,and

generalenergyconsumption.Thisreportexaminestheapplicationofthistechnology

inthenewbandandofficecomplexinNorthPhoenix.

LightingLoadAtotalof7,472fixtureswithenergy-savinglampswillcausea

totalloadof2,830,900kwhr.Thiswillcost$184,008.00.

BallastHeatTheheatgeneratedbythe13,852ballastsinthebuildingwilltotal

620,157Btu.Annualcosttoremovethisheatwiththeair-conditioningsystemis

projectedat$29,575.00.

FixtureCostComparisonStandardfixturecoststotal$314,766.00.High-frequency

coststotal$297,212.00.Thedifferencebetweenthetwois$17,554.00.

FixtureMaintenanceComparisonEstimatedstandardfixturemaintenancewill

cost$16,812.00annually.Thedifferencebetweenthetwois$13,076.00.

GeneratorCostsA1,500kwthree-phasegenerator(alternator)hasan

initialcostof$646,580.00.Itsprojectedannualenergyconsumptionis

$158,600.00.Theestimateannualmaintenancecostonthisgeneratoris

$12,500.00.

InstallationCostInstallationcostforthegeneratorandmainswitch-gear

onlyisestimatedat$132,500.00.Dedicatedwirewaysandlightingpanels

forthehigh-frequencydistributionsystemareestimatedat$283,750.00.

CostAnalysisofBothSystemsAhigh-frequencyself-generatedsystem

willcostmorethanastandardsystem.Thedifferenceinsystemcostis

$1,045,276.00.Theannualenergyandlaborsavingswillbe$55,559.00

basedonpresentenergyandlaborcosts.

ConclusionsPaybackisprojectedtobe18.8years.Thepaybackisfigured

intermsofenergysavings,reducedlightingmaintenance,andreduced

fixturecosts.

RecommendationsBasedonaprojectedpropertyholdingtimeofeightyears,

thepaybackperiodisfartoogreatandwouldincurinvestmentloss.Use

traditionalwiringmethodsandpublicpowerforallenergyusesinthebuilding.

Discussion(Body):

PurposeofStudy

Thepurposeofthisreportistodeterminewhetheraself-generated,high-frequency

ACpowersource(generator/alternator)canbeusedattheXYZDevelopment

complexinNorthPhoenix.Thisreportwilldeterminewhethertheself-generated

systemcanbeeconomicallyinstalled,operatedandmaintained.Itwilldetermine

whetherthesystemcanprovidesufficientenergysavingstopayforitselfovera

feasibleperiod,basedonaprojectedeight-yearpropertyownership.

Background

IncorrespondencedatedJanuaryX,19XX,JaneReynolds,ManagerandCEO

ofXYZDevelopmentCorporation,mentionedherobservationsduringarecent

triptoEuropeoflightinggenerationatseveralmajorhotels.Thehotelswereusing

self-generated,high-frequency(400Hz)ACpowersupplies.

Thesesuppliespoweredthefluorescentlightingloadsinthehotelsandinadjacent

buildings.Themainpurposeforsuchelectricaldistributionistheabilitytoignite

fluorescentlampswithouttheuseoftraditionaliron-coreandcoilballasts.By

eliminatingtheballasts,thesystemalsoeliminatestheheatgivenoffbytheballasts.

Thisresultsinreducingtheoverallcoolingsystemload,initialfixturecost,ballast

maintenance,andreplacementcostofballasts.

Thequestionremainswhetheritisfeasibletousethisdedicatedsystemofpower

generationforfluorescentlightingintheproposed18-story,720,000sq.ft.bandand

officecomplexinNorthPhoenix.Ifsuchasystemisinstalled,itmustbedoneinthe

earlyst