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W = G2()/(1- ) (1)
W =2*(5-0.5)/(100-5)= 0.095
:
G1=2+0,095 = 2,095 /
2. .
t0=8o =0,965
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=0,622*0,765*0,965/(99,3-0,765*0,965)=0,0047 /
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Io= (1.01+1.97*0.0047)6.3+2493*0.0047=18.1 /.
( )
I1=(1,01+1,97*0,0047)120+2493*0,0047=134 /.
g= 2*1,64(55-35)/0,0047=13957 /
,
I=2493+1,97*60=2613 /
I2= (1,01*60(-13937,85)+2613[0.0047(-13937.85)-134])/(-13937.85-2613)= 83
= [(83-134)/(-13937,85)]+0,0047=0,009/
L= 0,094/(0,009-0,0047)=2,18/
Q=2,18(134-18,1)=252,66
G..=252,66/2171=0,12 /
3.
V=169,2/11=15,38 3
L/D=5.
V=0,785D2*5D=3.925D3
D=15,38/3,9250,333=1,58 .
L=2*5=10 .
26-01-437-78 D=1600 L=8000 , I.
V=3,14*1,62*10/4=20,09
v=169,2/20,09=11,53 /(3*)
V= 2.18*22.4*((273+60)/273)(1/29+0.009/18)=2.1 3/
w=2.1/[0,785*1,62(1-0,15-0,05)]=1,31 /
=((0,009/18)*1000*99,3)/1/29+0,009/18=1439
=[29(99300-1439)+18*1439]*(273/(22.4*99300(273+60)))=1.047 /3
Ar=(0.3*10-3)31750*1.047*9.8/(0.02-10-3)2=1212
:
w=
1,31 / , ( ) = 2,03 /, .
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V=(1,297+2)1896/(2*800)=3,1 3
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. m=1, k=0,7, 2,5
n=1*0,7*10/(1896*1,6tg2.5)=0,057 -1=3,2 /.
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4.
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V=(0,1-0,2)Vr; V=0,15∙1711=256,65, 3/
V- , 3/ 10% V=(1,05-1,1)Vr; V=1,05∙1711=1796 3/
Wr=(0,8-1,0)∙10-2 3/2- .
26-14-2005-77 :
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108
F=150 2
3
9,1
=2,25
5.
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30
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900 2
10-20 /; ω =15 /.
426×11. 22/0,404
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Re:
=0,021∙10-3 ∙/2- ℃.
Re=369047 λ=0,017
900 ( 300 ) , 𝛏i=0,015 ,
10-20 .
:
∆P=20 =20∙9,81=196,2 /2
∆P=171+196,2+350+1500=2217 /2
,
η = 0,65 -
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84-160 3/
25-200
1-12
720-1970 /
6.
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