kg/min10.022132(1分)m2150ma2=10.001d2=148.67kg/min10.008949(1分)h=1.01t+0.0001d(2501+1.85t)=1.01*30+0.022132x(2501+1.85x30)=86.88kJ/kg(1分)h2=1.01t+0.0001d(2501+1.85t)=1.01*20+0.008949^(2501+1.85^20)=42.91kJ/kg(1分)ma3h3=ma1h1ma2h2h3ma1h1ma2h258786.8842.91148.6757378ma3587148.67735.67Р78kJ/kg(1分)ma3d3=ma1d1ma2d2d3ma1d1ma2d258722.132148.678.94914322ma3587148.67735.67=19.47g/kgair1分)ha=1.01t30.001d3(25011.85t3)t3h3-2.501d378-2.50119.471.011.850.001d31.011.850.01947琴-28°C-28C1.046(2分)РР精品文档Р精品文档РРРР精品文档Р精品文档РРd3=622:Ps3РB—ps3Рd3Ps3622Ps310132519.47Р(62219.47)3825Р=0.804=80.4%(2分)РР精品文档Р精品文档РР(1分)Р(1分)РB)作图法:Р做交点A(温度300C和相对湿度80%)和B(温度200C和相对湿度60%)。(1分)按照比例&=箜=148.67=0.253,确定C,即为所求混合点。РBCma1587由表查得tc=28°C,W=80%。РР精品文档Р精品文档РРРР精品文档Р精品文档РР含混量打丁,峰)(DA)РO2Р05055443[SJO5050_1IX一T*PW龄姻r&i-РРРAРCРРРР精品文档Р