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1、ChrisLong&NaserSaymaHeatTransfer:Exercises2DownloadfreeeBooksatbookboon.comHeatTransfer:Exercises?2010ChrisLong,NaserSayma&VentusPublishingApSISBN978-87-7681-433-53DownloadfreeeBooksatbookboon.comHeatTransfer:ExercisesContentsContentsPreface51.Introduction62.Conduction113.Convect

2、ion354.Radiation605.HeatExchangers79FreeeBookonLearning&DevelopmentBytheChiefLearningOfficerofMcKinseyDownloadNow4ClickontheadtoreadmoreDownloadfreeeBooksatbookboon.comHeatTransfer:ExercisesPrefacePrefaceWorkedexamplesareanecessaryelementtoanytextbookinthesciences,becausetheyrein

3、forcethetheory(i.e.theprinciples,conceptsandmethods).Oncethetheoryhasbeenunderstood,wellchosenexamplescanbeused,withmodification,asatemplatetosolvemorecomplex,orsimilarproblems.Thisworkbookcontainsexamplesandfullsolutionstogowiththetextofoure-book(HeatTransfer,byLongandSayma).The

4、subjectmattercorrespondstothefivechaptersofourbook:IntroductiontoHeatTransfer,Conduction,Convection,HeatExchangersandRadiation.Theyhavebeencarefullychosenwiththeabovestatementinmind.Whilstcompilingtheseexampleswewereverymuchawareoftheneedtomakethemrelevanttomechanicalengineerings

5、tudents.Consequentlymanyoftheproblemsaretakenfromquestionsthathaveormayariseinatypicaldesignprocess.Thelevelofdifficultyrangesfromtheverysimpletochallenging.Whereappropriate,commentshavebeenaddedwhichwillhopefullyallowthereadertooccasionallylearnsomethingextra.Wehopeyoubenefitfro

6、mfollowingthesolutionsandwouldwelcomeyourcomments.ChristopherLongNaserSaymaBrighton,UK,February20105DownloadfreeeBooksatbookboon.comHeatTransfer:ExercisesIntroduction1.IntroductionExample1.1Thewallofahouse,7mwideand6mhighismadefrom0.3mthickbrickwithk?6.0W/mK.ooThesurfacetemperatu

7、reontheinsideofthewallis16Candthatontheoutsideis6C.Findtheheatfluxthroughthewallandthetotalheatlossthroughit.Solution:Forone-dimensionalsteadystateconduction:dTkq??k???T?T?iodxL6.0??2q??16?6??20W/m3.0Q?qA??20??6?7???840WTheminussignindicatesheatfluxfrominsidetooutside.6Downloadfr

8、eeeBooksatbookboon.comHeatTransfer:Exerc