:
1) 3085000 /;
2) ( 26);
3) II 200 %;
4) = 1.5;
5) m = 0.7;
6) 20 ;
7) 74 β74 = 8 %;
8) 74 β74 = 68.6 %;
9) 74 37.5 %;
10) ;
11) .. 14÷16;
12) 3.0 /3.
.
, . (1):
Q 3085000
Q0 = ---------------------- = ------------------------- = 400 /.
N * m * n * K 357 * 3 * 8 * 0.9
:
VOP = Q0/10 = 400/10 = 40 3.
.1 :
֖3655 V = 50 3;
֖3245 V = 32 3;
֖2736 V = 17.7 3.
0 100 ---------- 95
21.1
I
1 100 ---------- 70
LI = 150.3 171.4
1200
LII = 538.3 2 300 ----------- 63
704.7
400 800
3 100 ----------- 33 4 200 ------------ 65
812.2 430.8
LIII = 102.5
5 200 ------------ 60
533.3
26
, , .
, , :
1) d = 25 ;
2) 0.074 I 30 %;
3) .. 12÷14;
|
|
4) 2.7 /3;
5) , D = 3200 , 0.076 /-.
(90):
e74 = e * * , /-.
K (80) 38:
K = (Kf / Kf ) * (δ / 2.7) = (1.05/1.16) * (3/2.7) = 1.01.
(81) 39:
K = m2 / m1 = 0.87 / 0.78 = 1.12,
(90):
e74 = 0.076 * 1.01 * 1.12 = 0.086 /-.
.
֖3655 N = 1250 .
(91) :
N * η * e74 1250 * 0.9 * 0.086
QP = --------------------- = --------------------------- = 328 /.
(β74 β74) 0.375 0.08
֖3245 N = 900 .
(91) :
N * η * e74 900 * 0.9 * 0.086
QP = --------------------- = --------------------------- = 236.1 /.
(β74 β74) 0.375 0.08
֖2736 N = 380 .
(91) :
N * η * e74 380 * 0.9 * 0.086
QP = --------------------- = --------------------------- = 99.7 /.
(β74 β74) 0.375 0.08
:
֖3655: N = 400/328 = 2 ., = 400/(2*328) = 0.61;
֖3245: N = 400/236.1 = 2 ., = 400/(2*236.1) = 0.85;
֖2736: N = 400/99.7 = 5 ., = 400/(5*99.7) = 0.80.
- .
45
, . | , | , .. | ||
֖3655 | 6848.96 | 0.61 | ||
֖3245 | 4164.0 | 0.85 | ||
֖2736 | 7655.0 | 0.80 |
45 , ֖3245. .
(88):
Q0 * (1 + C) 400
------------------- = ------------ = 6.25 /(3 * ),
N * V 2 * 32
.
.
1.5, .
32 3, , 32 * 1.5 = 48 3.
Ж3640. 35.5 3, (95) :
|
|
___________ ___________
/ D2 0.15 / 3.6 0.15
V. = V2 * \ / ---------------- = 35.5 * \ / ---------------- = 37.76 3.
\/ D3 0.15 \/ 3.2 0.15
, .. 37.76 / 32 = 1.18 < 1.5.
Ж3245. 32 3, . (2 * 32)/32 = 2, .
Ж3231. 22.4 3, . (2 * 22.4)/32 = 1.4, .
Ж3650. 48 3, , (95), :
___________
/ 3.6 0.15
V. = 48 * \ / ---------------- = 51 3.
\/ 3.2 0.15
51/32 = 1.59, .., . ֖3245 Ж3650. .
, , , 0.7. Ж3650 1250 , (96):
e74 * me * N * η 0.086 * 0.7 * 1250 * 0.9
Q = ------------------------ = ---------------------------------- = 217.8 /.
β74 β74 0.686 0.375
:
N = 400/217.8 = 2 ., = 400/(2*217.8) = 0.92.
:
Q0 * C 400 * 2
------------ = -------------- = 8.33 /(3 * ).
N * V 2 * 48