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1、铜管在供暖系统中的应用（Applicationofcoppertubeinheatingsystem）ApplicationofcoppertubeinheatingsystemAbstract:inordertoimprovethequalityofbuilding,thebuildingwatersupplysystemhasbeguntousecopperpipe.Inthispaper,theadvantagesofcopperpipelineusedinbuildingwatersupplyandheatingengineeringareintrodu
2、cedThecorrosionresistanceandotherpropertiesareanalyzed,andtheproblemsinthedesignandconstructionofthecopperpipearepointedout.Accordingtomarketresearchresults,combinedwithengineeringapplicationexamples,variouskindsofpipematerialsareanalyzedTheapplicationcostinengineeringisanalyzedandco
3、mpared.ItissuggestedthatcopperpipeswithgoodperformancepriceratioshouldbeadoptedinheatingengineeringCharacteristicanalysisofcoppertubeusedinheatingsystemCorrosionresistanceofacoppertubeOxidationcorrosionThepreciousmetals,suchasgold,silverandcopper,belongtotheIBfamilyofperiodictableofc
4、hemicalelements.Thecommoncharacteristicsoftheelementsarechemicalstability.Copperatroomtemperature,goodoxidationresistance,theatmospherecontainsmanykindsofgases,whicharemoreoxygen,watervapor,CO2,SO2andsoon.Inthiscondition,thesurfaceofcopperwillslowlyformalayerofcopperoxideorcoppercarb
5、onateandalkalicoppersulfatewithverythinbody,knownasp..Thetissueofthepatinaitselfiscompactandtightlybondedwiththecoppermatrix,thusformingaprotectivefilmtopreventthecorrosionofthebasemetal.Therefore,copperisnotdamagedbycorrosionintheatmosphereforalongtime.AcidandalkalicorrosionThereare
6、twokindsofcorrosionofmetalsinwater:electrochemicalcorrosionandchemicalcorrosion.Electrochemistryisthemainmethod,andthetwoareinterrelated.Electrochemicalcorrosionisthecorrosionproducedbytheelectronicflowcausedbythedifferenceofelectrodepotential.Theelectrodepotentialinwaterisgeneratedb
7、ycomparingthepotentialofhydrogeniontozero.Theelectrodepotentialofcopperinwaterispositive,andelectronsincopperatomsdonotflowtohydrogenions.Therefore,copperatomsinwaterdonotexchangeelectronswithionizedhydrogenionsinwater,andthenreactwithhydrogentoproducecorrosion.Itispossibleforcoppert
8、oundergohydr
