工程热力学课后答案--华自强张忠进(第三版)pdf下载H03

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1kg10050010.741kJ/(kg·K),1kg()12TTmcqVV−==0.741400=296.4kJ/kg1mol800K1000K512hhqp−==4276932179=10590J/mol10.85kJ/(kg·K),1mol()120TTcqpp−==0.8544200=7480J/mol∆%=37.2910590748010590=−%(25)20MPa2010cm30.01m3•23•1Rg=0.2968kJ/kgK()98.229202732968.001.010206igii=+×××==TRVpmkgQ=0W=0∆U=0U2=UiT2=Ti2001.02932968.098.229222=××==VTmRpgkPa1.5MPa371MPa3.11kg,,0=q2121uuw−=−10.716kJ/(kgK),)(2121TTcwV−=−=0.716×(310-276.1)=24.3kJ/kg12=×==15003102871.0111pTRgν0.0594m3/kg=×==10002762871.0222pTRgν0.0793m3/kg•24•,0.1MPa270.2MPa92.711.004kJ/(kg·K),)(2121TTchhwps−=−==1.004(300-365.7=-65.96kJ/kg0.15MPa300.1MPa01kggZchf++2211gZchf++2222w=0,Z,0=q1fc2fc1=Z2,11.004kJ/(kg·K),()4.245273303004.121032=−×××=fcm/s•25•1mol300K520K2TaTaTaaCmp332210,0+++=TTT3926310312.110062.51052.148.25−−−×+×−×+=132g/mol,dTCMhhqTTmp∫=−=−21,012211×=321[()()−−××+−×−23005201052.130052048.25223()()430052010312.1330052010062.5449336−××+−××−−]J/mol=4977.1J/g=4977.1kJ/kg1mol220300K800K4520h=15395J/mol=8736J/mol300h520h=24523J/molh800h1020=32089J/mol=−=hhq−300520520300153958736=6659J/mol=−=−80010201020800hhq3208924523=7566J/mol=−−5203001020800qq=665975661.136•26•2532725327C327C25m°°pc5h298=8669J/molh600=17563J/mol=−=−=∆866917563298600hhh8894J/mol302288894C327C25mC327C25m×=∆∆==°°°°TMhMccpp=1.051J/g=1.051kJ/kgK0.2kg0.1MPa270.15MPa10.2871kJ/(kgK)1212120lnlnlnppmRppRTTcmsggp=⎟⎟⎠⎞⎜⎜⎝⎛−=∆=1.015.0ln2871.02.0××=0.02328kJ/K1mol300K600K0.2MPa0.15MPa(1)(2)1120102lnppRsssg−−=∆4T1=300KJ/(mol·K)213.20501=sT2=600KJ/(mol·K)346.22602=s•27•52.232.015.0ln3136.8213.205346.226=−−=∆sJ/(mol·K)2⎟⎟⎠⎞⎜⎜⎝⎛−=∆ppRTTcMsgp12120lnln1917.00p=ckJ/(kg·K),73.225.12ln2598.0300600ln917.032=⎟⎠⎞⎜⎝⎛×−××=∆sJ/(mol·K)0.6MPa27(1)0.6MPa(2)WHHUUQie+−+−=120=Q0i=U0e=H0=WUH2i=TcmTcm22ipiν=mmi2=TkTccTiiνp2==3-34000kJ/kg3-3•28•27327110.22kJ/(kg·K),0.1244kJ/(kg·K),()TTcquqw122121−−=∆−=−−ν=400010.22300=934kJ/kg,()()TTRvvpwg′−′=−=−1212215.5261244.4934300g2112=+=+′=′−RwTTK3-40.6MPa270.2MPa:WumumhmeehmQii+−+=+1122:()()()TTRmmvvpg121212−−=−mWi=Q=0;me=0;m1=0;:3-4()TTRmumhmgi122222−+=TRuhgi22+=(T1=0)3-5TRTcTcgvip22+=272==TTi3-50.6MPa27•29•:WumumhmhmQiiee+−+−=1122Q=0me=0m1=0mmi=2avp=∫∫==vvavdvpdvW2121=()()vpvpvva112221222121−=−=TRvpg2222121=,:TRTcTcgvip2221+=110.22kJ/(kg·K),0.1244kJ/(kg·K),1.004kJ/(kg·K),65.3502871.05.0716.0300004.1212=×+×=+=RcTcTgvipK=77.4550kg0.140.060.050.7575kg0.2320.768(1)(2)(3)2COw2OwOH2w2Nw2Ow2Nw(1)50kg=0.1450=7kg2COm2Om=0.0650=3kg=0.0550=2.5kgOH2m=0.7550=37.5kg2Nm75kg=0.23275=17.4kg2Om•30•=0.76875=57.6kgOH2mm=125=+=1254.1732Ox0.1632056.012572CO==x=+=1256.575.372Nx0.760802.01255.2OH2==x(2)MxMxMxMnn+++=L221111802.044056.0287608.0321632.01+++==28.8g/mol(3)887.28.283.8314===MRRmgkJ/(kg·K)wg0.061140.095MPa(1)(2)(3)wA=10.06=0.94,MA=28.97g/mol(1)Mygg11406.0=(a)•31•MyAA97.2894.0=(b)()()ba586.61A=yyg(c)1A=+yyg(d)(c)(d):=yg0.0159870.98402=yA=0.015987×0.095=0.00152MPapypgg=pppg−=A=0.0950.00152=0.0935MPa(2)33.3097.3894.011406.011A=+=+=MxMxMgggg/mol(3)274.033.30314.8mg===MRRJ/(g·K)=0.274kJ/(kg·K)0.230.7725(1)(2)2Ow2Nw(1)4=6203J/mol;2OU5=6190J/mol;2NU2222NNOOuwuwu+==0.236203×321+0.776190281=214.7J/g=214.7kJ/kg(2)10.917kJ/(kg·K),0.657kJ/(kg·K);1.038kJ/(kg·K),•32•0.741kJ/(kg·K)2222vNNvOO0vcwcwc+==0.230.657+0.770.741=0.721kJ/(kg·K)2222pNNpOO0pcwcwc+==0.230.917+0.771.038=1.01kJ/(kg·K)0.120.030.070.782COwOH2w2Ow2Nw10.85kJ/(kg·K),0.661kJ/(kg·K);1.863kJ/(kg·K),1.402kJ/(kg·K);0.917kJ/(kg·K),0.657kJ/(kg·K);1.038kJ/(kg·K),0.741kJ/(kg·K);=0vc0.120.661+0.031.402+0.070.657+0.780.741=0.745kJ/(kg·K)0pc=0.120.85+0.031.863+0.070.917+0.781.038=1.032kJ/(kg·K)ABVA2.5m3pA6.86barTA80VB1m3pB9.8barTB3041900J10.2871kJ/(kg·K)AB•33•91.163532871.05.2686AgAAA=××==TRVpmkg26.113032871.01980BgBBB=××==TRVpmkgkg17.28BA=+=mmmm5.3BA=+=VVV3W=0()BvBAvA2vTcmTcmTmcUQ+−==∆mTmTmcQTvBBAA2++==17.2830326.1135391.16716.09.41×+×+−=330.93K=57.935.393.3302871.017.282g2××==VTmRp=765kPa=7.65barABABpApBVAVBTATBnAnBABBABBBAAAnnnTnnnTT+++=,BABBBAAAVVVpVVVpp+++=•34•AB,,,()2ABAABBBAAATcncnTcnTcnvvvv+=+A,B,BAvvcc=BABBBAAA2nnnTnnnTT+++=2A2AAAmA2TVpTVpRn==2B2BBBmB2TVpTVpRn==22BBBBAAAA22TpVTVpVTVp==22BABAVVnn=BABABABABBAA2222nnVVnnVVnVnV++=++==()()BAABAA2VVnnnV+=+()()BABBAB2VVnnnV+=+⎟⎟⎠⎞⎜⎜⎝⎛+++=BABBBAAAAAAA22nnnTnnnTVTVpp=()()BABBBBBAAAAAVVnnVpVVnnVp+++=BABBBAAAVVVpVVVp+++

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