常压热水锅炉供暖系统中锅炉膨胀水箱设置高度的探讨

,,DiscussionsoninstallationheightofexpansiontanksforatmospherichotwaterboilersByZhuJun,LiuJinxiangandDingGaoAbstractBasedontheanalysisandresearchofatmospherichotwaterboilerheatsupplysystem,presentsthedeterminationmethodoftheinstallationheightofexpansiontanksfortheboiler.Analysessomefactorsresultinginwaterpumpcavitations.Providessomeproposalsconcerningtheheatingsystemdesign.Keywordsatmospherichotwaterboiler,expansiontank,installationheight,circulatingpump,cavitationNanjingUniversityofTechnology,Nanjing,China0,,,,,1,2,,12501HV&AC2009392,,19712,210009200(025)83239965(0)13809042340E2mail:[e-mail]:2007-04-09:2007-05-17:2007-08-14[122][325],,,,,133,S,k[7]:psg+v2s2g-pg=pkg(1)ps,pkk,Pa;vs,m/s;,kg/m3;g,m2/s;pSk,Pah=psg+v2s2g-pvg(2)pv,Pah31(1)(2)hpg,pkpv,;h=pg,pk=pv,;hpg,pkpv,,,,[h],,[h]=pg+013,(3),h=psg+v2s2g-pvg[h]=pg+013(3)2O2OS2SZ0+p0g+v202g=Zs+psg+v2s2g+hs(4)Z0,Zs,Z0-Zs=H,m;p0,Pa;v0,0m/s;hsS,m(3)(4)H+p0g-hs-pvg[h](5)H1g(pv-po)+hs+[h],33.1,Q=43.3m3/h,h=30m,3.5m,hs1m,102790Pat95,g=9431.62N/m3[8],pvg=8196m,p0g=10190m,Hpvg-p0g+hs+[h]=8196m-10190m+1m+315m=216m3.2[1]Hp0g-pvg-hs-[h]+014,95H-212m,3.3,70,75,80,85,90,95,4601HV&AC2009392(5)3:4.1,,,4.2,2.5m4.34,,,85,H-0.2m,,85,;85,4.4H,,H55.1,,5.2,,(),5.3,,,,,:[1].ZBFGH172000[S].:,2000[2].JB/T79852002[S].:,2002[3],,,.[J].,2004,19(6):650-653[4],.[J].,2004(2):31[5],.[J].,2001(3):54-55[6].[M].:,1998[7].[M].:,1985[8],,,.[M].:,1999(76)55.1:40,5.2:,3+20,105.3:,+,5.4+13,6,4:[1].HJ/T3512007()[S].:,2007[2].DBJ/T011012005[S],2005[3].DBJ011002005[S].,2005[4].[M].:,2003[5].GB/T179812007[S].:,2007701HV&AC2009392