化工原理实验讲义-实验四离心泵特性曲线的测定实验

200491123123µρµρ⋅⋅⋅=⋅⋅=sdVduSRed[m]s[m2]u[m/s]ρ[kg/m3]µ[Pas]Vs[m3/s]Re)()ACC2BB152CBCBCBBCBC3Re121123456783A()CB(B)BC___________________mm_______C3/s/sReBCRe1AC1Re123______mm12345123451?2??34?4?6?5?5123224mm13mm5cmA21134(13mm)2(24mm)5678910111(6)0()H2H4______________________d2______d3_______d4_______23()41AH12A3AH34Ad1____1.7mmO1234H2A12H1H23H3H442122mm3s31A?H1H2?13?10???2P4=P3?3?4H1H2?(HlH2)?5A?6??1323??7A23?89A??81eRλ209034*Re*lduλgudlHf22⋅=λ231mfHlmdmusmλ12RgpPHf∆=−=ρ2123291N/1p2p2N/R∆mλλeR64=λ233=dReεφλ,234λeRdε231232gudl22⋅λR∆23524dVusπ=236235236lVRdgs252162∆=πλ237Vs/s10seVddduRµπρµρ24==238ρµλeRλeRguHf22⋅=′ξ239′fHmum/sξ()gppguuZZHfρ122122122−+−+−=′u1u2RHf′∆=′239guR22⋅=′∆ξ2310R′∆m11ξ123,nnnii∑==1ξξ1123456789101112131415161718192021222318No161.5mmNo2273mmNo3273mmNo4272.5mmNo5223mm483.5mmNo6323mmd0=18.2mm12No7No8910111213U145U(1910111213)181U(1910111213)100020004U181831020U132123456Π78910119036mm36.205mm21()ml303.050=m60225−П1mm0.3033435610714λeRξ2310__________;_________m_mH2OmH2O___________mmsmmmm123456789101mmH2ORemmH2Oslm3/s2123154RHf′∆=′5λ1U3060eRRH∆f63U3Ua1a2……f1f21a1a2……f1f2Uv3v4v5v61030v3v4v7U16v5v6v7v3v4UU0v3v4v5v630−601818v3v4v5v60244:172-159:1-3-4-5-6-7-8-95:V35V2618V4V4463V5ml76719Re-4728Re-91091120Re-1213101121121322141214834431V=C1RC2Vm3/hRkPa2C1=1.423C2=0.530.3ADS808A010kPa10kPa24123*4*5**QHNη,,SHQH~QN~Q~η,NQHS~QH~Q~Q~η1.Q2ξfQ=ξfQ×=6.3(3/)——fξ——1/×5ξ=68.90×10ξ=70.53125V=C1RC2Vm3/hRkPaC1=1.4C2=0.50.32.H∑+++=+++fehuPgzWuPgz2222222111ρρHe=H+H+H0[m]HH[m]H0()OmHPPH2'12106.735×+′=——'1P()mmHg'2P——()2cmKgf3.NNSInMnMN∗=∗=1047.0602π()WM——()mN∗n——l/7.93710006081.92PLnPLnN=××=π()KwP——()Kg26L——()m2()mL4869.0=20007.9734869.0PnPnN==()KwNNN=N[kw]0.911.04.ηSIgQHNeρ=()W---Q()sm3H---()mρ---()3mKg%100102%100×=×=NQHNNeρηn1nnnQQ11=211=nnHH311=nnNN111No8271818U18101123456789101112131415161718192021222318850Hz282318181#2#2#3#4#4#1#3#451231#2#3#4#2#4#2212211BA-634567891011124291051-21P2’(kgf/cm2)P1’(mmHg)fkpan1/p123456782Q(m3/h)H(m)N(kW)(%)nr/min123456783n=/290030Q(m3/h)H(m)N(kW)(%)nr/min12345678n=2900/QH~N~Q~ηQ1?512323467313m45:1-2-3-5-3C1C24-2:32453351-2-3-4-1COM12COM226677834899323103510111112121341450Hz36131410144533712Nu=0.023RePr(1)8.0nn0.4n0.3n0.41Nu=0.023RePr(2)8.04.04570r0.696Nu=0.0199Re(3)8.01uλαiidNu=iα--w/m2id--mλ--w/m25×1.25mmm2iα38Q=KStmiαK=mtSQ∆=3600(×∆−mPstSttcVρsm3/hkpaV=ARs12AkpaA1A1=32.37A:A=0.48522Kg/m3t273273293.1×ρt=2t+tpkJ/Kgm2Ttt100t2ReRe=µρµπρµρisiisidVddVud4210536.336004−×=×=µas3912345678910111213121223345810612340.2942.94kpa5401pa12kpa1234567891012u--e3uRe341iα23iα45iα67411234*5*6**12.5m573.5mm80mm80mm210mm4mm1123456789421.5mm6mm161084400mm0.06m24mm8121520%250300mm34R=512l/h246431250300mm23180mmH2O42[]2mm1250mm100mm0220VU12-22/320()33445446ET(1)(2)7ETTTNNE=PNpNT111lg)]xx1)(x1xlg[(NminmwwDD−−−=αmm=xDxWαα22xDxW1245xDxWxFqW=59.28-42.77nD125W=56.60-40.84nD40WnD21nn1nnmvy*yyyE++−−=*1nnmlxxxxE−−=−1nn−yn*-xnxn*-ynEmvEml12RRmin344612AV2OEmH12321VKPanDnDET123mmmm4710nD11221122418321312345678910117.1693.8592.6691.6088.3286.2584.9884.1383.0680.5978.38T9X00.1260.1880.2100.3580.4610.5460.6000.6630.8441.0Y00.2400.3180.9141.00.3390.5500.6500.7110.7600.799-123456789X00.04810.12090.18920.26080.33290.40080.45240.5243401.38031.37981.37881.37711.37581.37401.37291.37181.3697101112131415161718X0.58640.64990.71030.76300.81150.86730.93010.96831.0401.36851.36711.36531.36401.36311.36081.35981.35811.3571481.2.3.0.1m12122.2mmAESII1234567891011121314151617181920212216810100~200mmH2O2220.1Mpa49353151617419211p/zu21mYYYYaKVZ∆−⋅Ω⋅=21()mYYZYYVaKΩ∆⋅−=211Zmm2VKmol/hY1,Y2KmolA/KmolBYm2121lnYYYYYm∆∆∆−∆=∆12Y1=Y1-mX11350Y2=Y2-mX213amX2,X1kmol(A)/kmol(S)1KY2Vo2121oo1oTTPPPTVV=14V1m3/hTo,Po——T1,P1T1=293KP1=1.013105Pa3Vo21o221o1oo1oTTρPPρPTVV′=′14aV1m3/hToPoT1P1T1=293KP1=1.013105PnT2P2o1Kg/m3o2——Kg/m398%VoVo=0.98Vo15Kmol/h22.40.98V22.4VVoo′=″=′164(Kmol/h22.40.02VVoVo)′+=175Y151ooo1V0.02V0.98VY+′′=1865%Y*=mX(1-9)PEm=(1-10)P(Pa)E(Pa)P=++21EtT01020253040E0.2930.5020.7880.9471.2501.938(7)Y2X1Y2Y2()()WWVVY′=2111VW(ml)Vw(ml)VWVW=222.4VsCs(112)VS(l)Csmol/l52VW111TPTPVooW=V113T0P0T1P1V1(ml)X1()132Y2X1()2211XYYLVX+−=(114)VKmol/hLKmol/hX2NH3X2=0Y2(8)Ym2121lnYYYYYm∆∆∆−∆=∆(9)HOGΩ⋅=aKVHYoG(115)KYa531.82.11515281.()13m3/m20.50.8m/s3%5%2.3.30.50.8Mpa3188215341.54??2.??3.?4.?5.?6.?7.?1V=A1RA2V=B1RB2V=C1RC2Vm3/hRkpa21#2#A120.9621.01A20.4880.484B167.6750.59B20.4820.470C10.4880.463C20.4760.47955T=KP=mmHgmmHg3/mmH2O1234L=O51234L151234L25561[]2______123456Pam3/hm3/hm3/hMPam3/hm3/hm3/hL/min_______mol/L_____ml(L)mol/Lml101010101010123mlmol/LPaPaPa57121UU=)./(2smKgAdtdWm2WkgtsU=)./(2smKgtAW∆∆2UU=f(x),1c582100ml30—50mlGZ-11234567891011121314151515-25mm85-90,gmmmmmmmg=gGs32OH451-21-26c=205912U-x13232)/(2smkgU12345678[mm]t[]t1[]tw[]t[]kg/kg603112345nDEmv1nDEmv2nDEmv3nDEmv4nDEmv512341VmmH2OnDnDnDET123V1=V2=V3=Y1KHY2X1YmKYaHOGY1Y2X1YmYaOGY1Y2X1YmKYaHOGL1=L2Kmol/hKmol/h=12