1-2 3-4
v, 3/ | , | |
1/ | 0,500 | 0,207 |
1// | 0,400 | 0,283 |
1/// | 0,300 | 0,423 |
3/ | 0,300 | 1,404 |
3// | 0,400 | 0,937 |
3/// | 0,500 | 0,687 |
T-s 2-3 4-1, :
7.
7
2-3, 4-1
, | s, /(×) | |
2/ | 0,221 | |
2// | 0,589 | |
2/// | 0,830 | |
4/ | 0,794 | |
4// | 0,588 | |
4/// | 0,297 |
: -v . 12; T - s - . 13.
. 14 . 15
2.
p=const , , ..., . . .
:
1. 1= 0,100 .
2. 1 = 293 .
3. e = 12,7.
4. r = 2.
:
1. (, v, T, u, i, s) .
2. q 1 q 2, l, ... ht.
3. Du, Di, Ds, q l.
4. p-v T-s, , .
.
, - . R =287 /(×), k =1,4, cp =1,005 /(×), cv =0,718 /(×). .
1. :
1
1 =0,100 , 1 =293 ,
=0,841 3/,
=0,718(293-273)=14,36 /,
=1,005(293-273)=20,10 /,
=0,075 /(×).
2
3,51 ,
29312,70,4=810 ,
0,066 3/,
=0,718(810-273)=385,57 /,
=1,005(810-273)=539,68 /,
=0,075 /(×).
3
3,51 ,
8102=1620 ,
0,0662=0,132 3/,
=0,718(1620-273)=967,15 /,
=1,005(1620-273)=1353,73 /,
=0,77 /(×).
4
0,121,4=0,264 ,
29321,4=773 ,
0,841 3/,
=0,718(773-273)=359 /,
=1,005(773-273)=502,55 /,
=0,77 /(×).
2. :
1,005(1620-810)=814,05 /;
:
0,718(773-293)=344,64 /.
:
814,05-344,64=469,41 /.
... :
0,42
|
|
0,42.
3. Du, Di, Ds, q l .
1-2 ( ):
Du1-2 = u2 u1 = 385,57 14,36 = 371,21 /;
Di1-2 = i2 i1 = 539,68 20,10 = 519,58 /;
Ds1-2 = 0;
q1-2 = 0;
l1-2 = - Du1-2 = - 371,21 /.
2-3 ():
Du2-3 = u3 u2 = 967,15 385,57 = 581,58 /;
Di2-3 = i3 i2 = 1353,73 539,68 = 814,05 /;
Ds2-3 = s3 s2 = 0,77 0,075 = 0,695 /(K);
q2-3 = q1 = 814,05 /;
l2-3 = q2-3 - Du2-3 = 814,05 581,58 = 232,47 /.
3-4 ( ):
Du3-4 = u4 u3 = 359 967,15 = - 608,15 /;
Di3-4 = i4 i3 = 502,55 1353,73= - 851,18 /;
Ds3-4 = 0;
q3-4 = 0;
l3-4 = - Du3-4 = 608,15 /.
4-1 ( ):
Du4-1 = u1 u4 = 14,36 359 = - 344,64 /;
Di4-1 = i1 i4 = 20,10 502,55 = - 482,45 /;
Ds4-1 = s1 s4 = 0,075 0,77 = - 0,695 /(K);
q4-1 = - q2 = - 344,64 /;
l4-1 =0.
8.
8