101400.411420.318.09
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-35042
2008
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101400.411420.318.019.01 | 1 | |
101400.411420.318.019.02 | 1 |
. () , . . .
: (- ); - ( ); ; ; ; ; .
. , , .
, :
- n = 6600 /;
- () G = 55,5 /;
- 0* =98 T0* =286 ;
- p = 4,0;
- h* = 0,87.
:
1* = 0*×h =980,99 =97,02 .
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, : * = [k/(k-1)]RT0*(p* [(k-1)/k] 1) = [1,.4/(1,4 -1)]×0,287×286×(4 [(1.4 - 1)/1.4] - 1) = 139,62 /.
, :
= */ h* = 139,62/ 0,87= 160,48 /.
7.
: = /7=22,93 /.
:
= (1,05-1,10) = 1,1×22,93 = 25,20 /;
= (0,95-1) = 0,967×22,93 = 23,22 /;
= (0,6-0,9) = 0,799×22,93 = 19,18 /.
, :
= h1 + h2 + h3 + h4+ h5 + h6+ h7 = 25,20 + 23,22 + 23,22+ 23,22 + 23,22+ 23,22 + + 19,18 = 160,48 /.
:
1 = l 1 × a1* = 0,6×309,48 = 185,69 /,
1* = 18,3 = 18,3 = 309,48 /.
l1a = 0,60 - .
:
* = 0* + /c = 286 + 160,48 / 1,0045 =445,76 .
:
* = 1* × p* = 97,02× 4 = 388,08 .
az = 131 /.
():
F2z = (G× R× T*)/(p*× caz× kG) = (55,5×0,287× 445,76) / (388,08 ×131×0,951) = 0,147 2,
kG , ( kG = 0.97 - 0.98, kG = 0.95 - 0.96)
U = 300 /.
uz = (0.9 ¸ 0.95)× u = 0,925×300 = 277,50 / :
Dz = (60× uz) /(p× n) = (60×277,50)/(3,142×6600) = 0,803 .
, (0.4 0.5):
caz = caz /uz = 131 / 277,50 = 0,472.
:
lpz = F2z /(p× Dz) = 0,147 / (3,142 × 0,803) = 0,058 .
:
D/ = Dz - lpz = 0,803 0,058 = 0,745 .
Dz=0,745.
:
dz = Dz /(Dz + lpz) = 0,745/(0,803 + 0,058) =0,865.
:
u = p× Dz × n /60 = 3,142× 0,803× 6600 /60 = 291,54 /.
. , D = const, . . 2.1.
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. . 2.2, . D = const.
. 2.1 2.2 (. . 2.1). .