工程热力学练习题-final.

1、12022-6-17思考题思考题4 401twq ,15341,12341tt1562473s01nm0,153410,15341ww1,153411,1 5341qq,12341t,15341t,1 5341t,15341t22022-6-17思考题思考题4 4211tTT 1562473s01nm,15341,12341tt32022-6-17思考题思考题4 4 162473Ts0nfmg136qhh1nettwq42022-6-17思考题思考题5 5 ,12341,12361tt1246Ts0nmg1nettwq52022-6-17举例举例1 1Ts01234pv0423ssspvv3v

2、12442svps62022-6-17举例举例2 21223(3)1Tspv01123(3)Tss2pv072022-6-1712netnettnetwwqwq1223(3)1Tspv0Ts01223(3)1vpvnetnetww22qq11qqtt(a)82022-6-17(b)1123(3)Tss21223(3)1pv211tT T 1313131132311313()()()(lnln)(lnln)VVVc TTc TTTTQTsscTTTT22TT13113()(lnln)TTTTTttpv0Ts092022-6-17举例举例3 31(1)223(3)Tspv0322(2)Ts1(1)

3、pv0102022-6-17(1)v01(1)2p23(3)Ts211tqq netnetww22qq11qqtt223(3)vpsT1(1)Ts0112022-6-17(2)32(2)3Tpsv1(1)Ts0332(2)Ts1(1)v0p211tT T 1313131132311313()()()(lnln)(lnln)VVVcTTcTTTTQTsscTTTT22TT13113()(lnln)TTTTTtt122022-6-17举例举例4 43mpv032154Ts012345132022-6-17举例举例4 4（1）各状态点的基本参数）各状态点的基本参数197pkPa128t 310.08

4、4Vm33120.0840.005615VmVm1.41212()97154298VppkPakPaV11.4 11212()30115889.2VTTKKV36.2pMPa3320.0056VVm6332626.210889.21282.174.298 10pPaTTKKpPa142022-6-174(1320273.15)1593.15TKK436.2ppMPa3344331593.150.00560.0069551282.7TKVVmmTK3510.084VVm361.4454350.006955()6.2 10()189.50.084VmppPakPaVm310.4454350.006

5、955()1593.15()588.10.084VmTTKKVm152022-6-17211tqq 588.1301165.3%(1282.7889.2 ) 1.4(1593.151282.7 )KKKKKK 111(1)(1)t 513243()1()()tTTTTTT513243()1()()VVpc TTc TTc TT 513243()1()()TTTTTT 162022-6-1711,1,3243()()VpVpqqqc TTc TT11Qmq717 /() (1282.7889.2 ) 1.4(1593.151282.7 )J Kg KKKKK717 /() 828.13593769.21 /JKg KKJ Kg331 1197 100.0840.09432287 /() 301gpVPammKgR TJKg KK10.09432593769.21 /56004.