7.
.
30%, 40-45% .
, 2 . , .
.
1 .. , .. . - , , . max (1-2 ).
30 50 , 40-45 .
< 40 .
> 45 , .
: -63, - , -29, -38, -29, -36 -50, -1, -2 , -60 -75.
f =4-6; 10-14 16-20.
: 60; 30 20 /
: 95; 50 35 /.
, 1 -60 -75. . 2-4 , , , . . 500 /. 60-80 .. , . . . 2 (-), . 30-50 /2 15-25 /2 . 1,5 , , , - ( , ). .
.
: - ( ) - , .
|
|
.
.
- -8, -4, 79/21 . , , , .
7̻ -8 - ϻ.
:
( 5-8 ) , , , , , . , , ; , ; .
, .
(...) . - .
..., , :
,
d - , ; D - , /3; k - , k = 0.6-0.72; m - , m =1-1.5; q - , /3.
.. ..,
q=q0*k1*k8, /3
q0 - , /3; k1 - ; k8 - ( 1;1.15; 1.6; 2.3; 3.8 , 3.5; 3; 2; 1.5; 1 ).
:
f....... 4 6 8 10 12 14 16 20
q0..... 0.4 0.49 0.61 0.74 0.9 1.09 1.31 1.61
.. . :
q = q0*k1*k4*k5*k6, /3
q0 - , /3, . .2.1; k4 - , [ 1 1.4-1.6 , , ( ) ]; k5 - , ( 1 , 0.9-0.95 0.8-0.85 ); k6 = (d/0.042)n; n = 1-0.5 ( , - ).
:
,
D - , /3; k10 = 0.8-0.95 - , .
, /3
- | , | ||||
1 | 1 - 2 | 2 - 3 | 3 - 5 | > 5 | |
20 | 3.9 | 2.6 | 2.3 | 2.1 | 2.0 |
18 - 20 | 3.6 | 2.3 | 2.1 | 1.9 | 1.8 |
16 - 18 | 3.3 | 2.1 | 1.9 | 1.8 | 1.7 |
14 - 16 | 3.0 | 1.8 | 1.7 | 1.5 | 1.4 |
12 - 14 | 2.7 | 1.6 | 1.5 | 1.4 | 1.2 |
10 - 12 | 2.4 | 1.4 | 1.2 | 1.1 | 1.1 |
8 - 10 | 2.1 | 1.2 | 1.0 | 0.9 | 0.9 |
6 - 8 | 1.8 | 1.1 | 0.9 | 0.8 | 0.8 |
6 | 1.4 | 0.9 | 0.8 | 0.6 | 0.6 |
, , :
|
|
........0.9 -4.......0.98
....................0.8 .............1.13
N 6...........................1 ...............0.82
N 1.............0.8 .............1.08
-8.........................0.89 ...................1.13
:
a = m *W
m - .
0.2-0.3 . ( ):
n = S*q* g /(0.785*d2*D*k),
S - , 2 ; g - , /3.
, :
L = n*l,
l - , .
, , :
V = S*l*g*h,
h - .
( 1 ), :
Q = 0.785*d2*D*k* L,
, /3
q = Q/V,
1 , /:
d = γV/L,
: , . . () .. , .
:
5 - 50 3/ 400÷700 3/ .
0,3-1,5 3/
0,6÷3 /3
(1-1,5 ) .
:
1. .. , , .
2. .. .. .
3. .. .
4. .. :
- : (, , ).
- : (, , ,
" ", , - .
. , /, :
Q = 60(T - T - T)/[(t + t)(1 + k)],
- , ; - , - , ; t ,t - , () 1 , ; ; k - , ( 0.1; 0.08 0.06 , ).
- :
|
|
........................ 0.355 0.045
...............0.411 0.045
................ 0.433 0.047
....................... 0.773 0.23
:
Q= 60*k*n*(T- T- T)/ [(t + t) (1 + k)],
k - ( 0.95-0.85 0.8-0.9 2-3 4 ); n - ; k = 0.07 - ; - , ; t t - , /.
:
....................................8-10 10-12 12-14 14-16
, /......1.16 0.86 0.543 0.348
, .......... 12-14 8-1 3-5 3-4
BOOMER - 251
F4L912W | |
, | |
Max. , / | |
, | |
, | |
, | |
, | |
, | |
, | |
. | 13,8 |
, | 3,7-4,3 |
, | |
, 2 | 8-30 |
1238/1032 | |
BUT 25 | |
BMH 1100/1300 | |
DS 15 |