《化工基础》(张近 著)第三章答案 高等教育出版社 7页

'土星答案网您最真诚的朋友www.txdaan.com土星答案网团队竭诚为您服务免费提供大学课后答案|考研答案|高考答案|资格考试答案下载 1H242%N221.5%CO27.8%CH41.5%CO27.1%O20.1%88.2kPa25Mm=(M·y)H2+(M·y)N2+(M·y)CO+(M·y)CH4+(M·y)CO2+(M·y)O2=2×0.42+28×0.215+28×0.278+16×0.015+44×0.071+32×0.001=18.04kg/kmolMP18.04(101.388.2)31.38/kgmRT8.314(27325)225mm×2.5mm57mm×3.5mm5400kg/h3-31200kg/m2×10Pa·sd1d2de=d1-d2d1=0.057-0.0035×2=0.05mmd2=0.025mmde=0.05-0.025=0.025mm4V4W45400u===0.85m/s222222dd()dd3.14(0.050.025)120036001212du0.0250.851200Re==12740>4000321031土星答案网20%220%320%ulh32f2d1l1=0.8lhf1=0.8www.txdaan.comhf(hf)=hf-hf1=0.2hfulul2d1=1.2dhhf132220.694(32)0.694f(1.2)dd(hf)=hf-hf1=0.306hf31=0.8hf1=0.8hf(hf)=hf-hf1=0.2hf-14850kg·m2m-1-120m30J·kg0.915m·s89mm×6mm60mm×4mm1-12-2121122pp12gzuwgzuw11ef2222 -1z1=2mz2=20mu1=u20p1=p2=0wf=30J·kg122()pp21wg(zz)()uuwef212121w9.81(202)30206.58Jkge223.141mV·du0.0770.9158503.62kgsss142Ne=w·ms=206.58×3.62=747.79W-3557mm×3.5mm20×10Pa·s-3800kg·m16m-225m4kgf·m3-16.6m·h22121216m1122pp12zuHzuH11ef2222gggg-2z1=0mz2=16mu1=u20p1=0()p2=4kgf·m()11L=25m54V46.61u0.934ms22d3.140.053600du0.050.934800Re1868<200032010332ul320.934252010H0.76mf22gd8009.810.50449.8110H160.7666.76(m)e土星答案网8009.816500m3-10.02m·s10m=0.023(a)-1-11.05m·s(b)4m·s(c)(a)(b)www.txdaan.com121112h1122pp12zuHzuH11ef2222ggggz1=hmz2=0mu10u2=up1=0()p2=10m()222Lu4VHdfdg2u2-140.025001.05(a)u=1.05m·sd0.156mH0.0234.14mf3.141.050.15629.8121.05hm0104.1414.229.81 2-140.025004(b)u=4m·sd0.08mH0.023117.23mf3.1440.0829.8124hm0105117.23128.029.817100mm15mBU20m(1)R=600mmh=1500mmR=400mmh=1400mm3=0.02=0.5m/h(2)le/d=15=0.018BkPa11HA15m20m2B00C2BhR44(1)aRhHp4=g(H+h)p4=gHgRp4=p4g(H+h)=gHgR1000×(H+1.5)=13600×0.6H=6.66mbB4pB=gHgR-gh=13600×9.81×0.土星答案网4-1000×9.81×1.4=3.96×10Pa1B0-0zg11u22pp1zguhBzguzguh11BBf1B224z1=HzB=0u1=0p1=0()www.txdaan.compB=3.96×10Pa()22lu15u2hu()(0.020.5)1.75fB1d20.12122pBHguu1.752p3.96104BHg6.669.811000u3.38/ms2.252.25112233Vdu0.13.380.0265m/s95.4/mh44(2)a 1122pp1212zguzguh1122f1222z1=HzB=0u1=u2=0p1=0()p2=0()22lleuu15202hu()[0.018(15)1.5]4.035f12d20.12Hg6.669.81u4.024/ms4.0354.035b1B0-01122pp1Bzguzguh11BBf1B2222lu15u2z1=HzB=0u1=0u2=4.024m/sp1=0()hufB1()(0.0180.5)1.6d20.12224p(Hg2.1u)(6.669.812.14.024)10003.1310PaB1122ppB2B2zguzguhBB222fB2222lu20u2zB=z2=0uB=u2=up2=0()hufB2()[0.018(15)]1.935d20.12224p(1.935u)(1.9354.024)10003.1310PaB883mm×3.5mm4.8m3-15m36m·h-1-1-21.96J·kg土星答案网4.9J·kg2.5kgf·cm70%-2(1)hm(2)(3)(2.5kgf·cm)444V436u2.204/ms22www.txdaan.comd3.140.0763600(1)3-3`4-4`331122p3p42zguzguh3344f34222z=5mz=h+5mp=2.5kgf·cm-2=245.2×103kPa113433-1p4=0()hf34=4.9J·kgu3=u4=uh3=24.5mh=h3+5=29.5m(2)1-1`4-4`1122pp14zguwzguh11ef441422 -1z1=0mz4=29.5mp1=p4=0()h=1.96+4.9=6.86J·kgu1=u4f14-1we=296.25J·kgN2962.5eNe=we·ms=296.25×10=2962.5N4.23kW70%(3)1-1`2-2`1122pp12zguwzguh11ef221222-1z1=0mz2=4.8mp1=0()hf12=1.96J·kgu1=0u2=2.204m/sp21122(zguh)(4.89.812.2041.96)51.4822f1222-2-2p2=-51.48kPa=-0.5249kgf·cm=0.5249kgf·cm()96.5m(0.3m)90kPa3m303m90kPa30H``s=H`s+(Ha-10)-(Hv-0.24)Ha=90kPa=9.174m30Hv=4.247kPa=0.433mH`s=6.5mH``s=6.6+(9.174-10)-(0.433-0.24)=5.581m""12HH(uhm)5.58132.5813mgsf2g3-1102B31A5020m·h25.2m65.6%-17.2m(0.3m)2900r·min2``(53mm)2m0.1MPa3-130m·h5.7m5012.34kPa=1.2580.1MPa=10.194mH``s=H`s+(H土星答案网a-10)-(Hv-0.24)=7.2+(10.194-10)-((1.258-0.24)=6.379m3-14V42020m·hu2.52m/s23d3.140.05336002""122.52HhHu()6.379(2)4.055mgsf2gwww.txdaan.com29.813-14V43030m·hu3.78m/s23d3.140.0533600H``s=H`s+(Ha-10)-(Hv-0.24)=5.7+(10.194-10)-(1.258-0.24)=4.876m2""123.78HhHu()4.876(2)2.167mgsf2g29.813-11139.6m·h15m2.02kW-180%2.8kW1400r·min3-1(1)1.838m·h15m3-1(2)0.840m·h30m3-1(3)0.930m·h15m 3-1(1)1.838m·h15mNQHg381518009.81eN3.5kW<2.8kW0.836003-1(2)0.840m·h30mNQHg40308009.81eN3.27kW<2.8kW0.836003-1(3)0.930m·h15mNQHg30159009.81eN1.38kW>2.8kW0.83600土星答案网www.txdaan.com'