nk0=1.293Kg/mQKg□□9.81m/sQhnnnnnnnnnnnh=121DDDDDDDDDD□□□□□e1200叮叮L1=17m①1200叮口18m□□□1叮叮叮叮口hzsP尸)g(Pa)□□□□□□□□□□□□□□Kg/mUDDDDDDDDDDP0=1.34Kg/mD□P=P273/273+1=1.34*273/273+170=0.825Kg/皿hzs=12*(1.293-0.825)*9.81=55.1Pa2DDDDDDDDDDDDDDDDDDDDDDDDDP=100.48Kpa,DDDDDDDDDDt=29D□PP□D273/273+29D*100480/101325=1.16Kg/mDK=KDDDDDDDD0.5DDDDDDDDDDDDD170-D17+18D*0.5=152.50DDDDDDDDDDD170+152.5D/2=161.25DDDDDDDDDDDDDP=1.34*[273/(273+161.25)]*100480/101325=0.853Kg/mDnusnuznuhnuDDDDhzs=17叫1.16-0.853U*9.81=51.20Pa^2DDDDDDD□□□□□5100m□□□□□□□□□□□3/h□□□□□①1200叮叮L1=17m①1200叮叮口18m□□□□□170D□□□□□□□152.5U工△hy=Ah+△h+△hmjycDD△hDDDDDDDDm△hDDDDDDj△hDDDDDDDDyc△hm=入•L/ddi・(w2/2)・ppaDD入DDDDDDDDDDDDDDD0.02LDDDDDDDDL=35mWDDDDDDDm/s3*5100*m3/h=3.8m/s3.14*(1.2/2)2*3600dDDDDDDDDDDDDDDDDDdlpDDDDDDDKg/m3p=p°・273/(273+tpj)=0.826p』DDDDDDDDDDD1.34Kg/m3DtpjDDDDDDDD△hm=0.02*35/1.2*(3.82/2)*0.853=3.6pa△h.=(90*0.7)*w□□□□□2/2*p=(3*0.7)*3.82/2*0.8531.=12.9pa△hyc=€*(w2/2)*p£DDDDDDDDDDD=1.1*(3.82/2)*0.853=6.8paZ△hy=3.6+12.9+6.8=23.3pa51.2pa>23.3pa□□□□□□□□叮叮叮叮叮叮叮叮DDDDDDN400DDDDDDDDDDDD2DDDDDDD□□□□□□1150m□□□□□□□□□□3/h□□□□□①1200叮叮L1=17m①1200叮叮口18m□□□□□170D□□□□□□□150.5U工△hy=Ah+△h+△hmjycDD△hDDDDDDDDm△hDDDDDDj△hDDDDDDDDyc△hm=入•L/ddi・(w2/2)・ppaDD入DDDDDDDDDDDDDDD0.02LDDDDDDDDL=39mWDDDDDDDm/s2*1150*m3/h=5m/s3.14*(0.4/2)2*3600dDDDDDDDDDDDDDDDDDdlpDDDDDDDKg/m3p=p°・273/(273+tpj)=0.837p』DDDDDDDDDDD1.34Kg/m3DtpjDDDDDDDD△hm=0.02*39/0.4*(52/2)*0.837=20.4pa△h.=(90*0.7)*w□□□□□2/2*p=(3*0.7)*52/2*0.8371.=22pa△hyc=€*(w2/2)*p£DDDDDDDDDDD=1.1*(52/2)*0.837=11.5paZ△hy=20.4+22+11.5=53.9pa53.9pa53.9pa□□□□□□□□叮叮叮叮叮叮叮口DDDDDDN600DDDDDDDDDDDD2DDDDDDD□□□□□□2020m3/h□□□□□□□□□□□□□□□①600叮叮L1=17m①600叮叮口27m170D□□□□□148U□□□□□□□工△hy=Ah+△h+△hmjycDD△hDDDDDDDDm△hDDDDDDj△hDDDDDDDDyc△hm=入丄©・(w2/2)・ppaDD入DDDDDDDDDDDDDDD0.02LDDDDDDDDL=39mWDDDDDDDm/s2*2020*m3/h=3.9m/s3.14*(0.6/2)2*3600dDDDDDDDDDDDDDDDDDdlpDDDDDDDKg/m3p=p°・273/(273+tpj)=0.853p』DDDDDDDDDDD1.34Kg/m3DtpjDDDDDDDD△hm=0.02*44/0.6*(3.92/2)*0.84=9.4pa△h.=(90*0.7)*w□□□□□2/2*p=(5*0.7)*3.92/2*0.841.=22.4pa△hyc=€*(w2/2)*p£DDDDDDDDDDD=l.l*(3.92/2)*0.84=7paZ△hy=8.4+22.4+7=37.8pa53.37pa>37.8pa□□□□□□□叮叮叮叮叮叮叮叮口
