工程热力学-第七章水蒸气之水蒸气的图表ppt课件.pptx

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1、第七章 水蒸气之水蒸气的图表02.01.水和水蒸气表水蒸气的焓熵图CONTENTS水和水蒸气表01. 1.饱和水和干饱和蒸汽表饱和水和干饱和蒸汽表水蒸气表水蒸气表012.未饱和水和过热蒸汽表未饱和水和过热蒸汽表p0.001 MPa0.005 MPa0.01 MPa饱饱和和参参数数ts=6.949 v=0.001 000 1, v”=129.185h=29.21, h”=2513.3s=0.105 6, s ”=8.9735ts=32.879 v=0.001 005 3, v”=28.191h=137.72, h”=2 560.6s=0.4761, s”=8.3930ts=45.799 v=0.

2、001 010 3, v”=14.673h=191.76, h”=2583.7s=0. 649 0, s”=8.1481tvhsvhsvhsm3/kgkJ/kgkJ/(kgK)m3/kgkJ/kgkJ/(kgK)m3/kgkJ/kgkJ/(kgK) 00.0010002- -0.05- -0.00020.00100020.0010003- -0.05- -0.00020.0010002- -0.04- -0.000210130.5982519.08.993842.010.15100.001000342.010.151020135.2262537.79.05880.001001883.870.2

3、9630.001001883.870.296340144.4752575.29.182328.8542574.08.43660.001009167.510.572350149.0962593.99.241229.7832592.98.496114.8692591.88.173260153.7172612.79.298430.7122611.88.553715.3362610.88.231380162.9562650.39.408032.5662649.78.663916.2682648.98.3422100172.1922688.09.512034.4182687.58.768217. 196

4、2686.98.4471120181.4262725.99.610936.2692725.58.867418.1242725.18.546601水蒸气的焓熵图02.水蒸气的焓水蒸气的焓-熵（熵（h-s）图）图水蒸气水蒸气的的t-s图图 02焓熵图焓熵图dddhT sv pnhsnnhpTvss斜率斜率定压线定压线定温线定温线定容线定容线定干度线定干度线021）定压线群）定压线群Tshp湿蒸汽区，湿蒸汽区，T = Ts，直线，直线过热蒸汽区，斜率随过热蒸汽区，斜率随T增增大而增大大而增大nnspvTsh0022）定温线群）定温线群TTspvTsh湿蒸汽区：湿蒸汽区：d0sThpTs直线，与等压线重合直线，与等压线重合过热蒸汽区：过热蒸汽区：等温线较等压线平坦，等温线较等压线平坦，低压时趋于水平。低压时趋于水平。1VpvvT1TVhTsT体积膨胀系数体积膨胀系数023）等容线群）等容线群vvspvTsh4）等干度线）等干度线等容线比等压线陡等容线比等压线陡0vpsvphhss等熵条件等熵条件02THANK YOU