Остапчук М.В. Система технологій
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181
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f
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4 ’# :
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:
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184
– (20...30) /, – (30...50)
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2
2
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4
vd
d
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, /. (4.23)
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m&
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P
U
Q
d
max
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% v
=(0,8...0,9)5v
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# Re 2300;
2300 Re 10 000, – Re ! 10 000.
9!# -
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= 64/Re, –
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= 0,316 / Re
0,25
.
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J:
g
v
g
P
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g
v
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n
22
2
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11
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185
C #:
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d
r
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:
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= 4r
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C #:
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=
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f
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4
4
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. (4.27)
C b -
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)(222 ba
ab
ba
ab
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r
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:
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. (4.29)
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, (4.30)
v – @ (), /;
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– , /
3
;
d, l – , ;
[
$
– !# ! ;
O
– !# , -
: Re 2300 O = 64/Re; Re !
2300 O = 0,36 / Re
0,25
.
9!# ! !
! (,
O
= 90;
[
= 1,5.
186
C
,
gHP
#
U
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, -
@
$
P' .
9 F Re =
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vd
, H
Fr =
gd
v
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2
U-
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E -
# :
gHv 2
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, (4.31)
M
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1000
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Q = Gc(t
1
– t
2
), C, (4.34)
G – , ;
c – #, C/(9);
t
1
, t
2
– ! , > -
#, q&.
K , # #
() ! (1 ) q&.
187
C t = 20q& = 4183C/(9).
( -
:
Q = G r, C, (4.35)
r – , C/.
C = 0,1%, r = 2258 C/.
4 :
Q = G r
, C, (4.36)
r
– ! -
( ), r
= 334 C/.
4 @ -
2258/334 = 6,7 .
C -
Q
,
(t | 0q), -
, – (
0q& ):
Q
&"
= V
p
*
U
p
* c
p
(t
p
– 0), C, (c
p
= 4,2, C/); (4.37)
Q
"+
= Gr
, (r
, = 334 C/) (4.38)
Q
0
= V*
U
"
* c
"
[(0 – (–t)], C, (4.39)
U
"
, c
"
– # .
< , >
@, ! -
> ,
@#.
% 0,1 % # 4q&
(3,89q&).
% 0q& @# 1000
999 /
3
, – @#
U
"
= 918,8 /
3
.
M ’ @:
U
"
| 917 (1 U 0,000156) t,
# ( U100q&
U
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= 928 /
3
).
188
4# # -
:
U
"
= 2,12 + 0,00779*t;
O
"
= 2,22(1 – 0,0015*t );
c
p
=2,26 C/(9) 0q& 1,17 U100q&,
O
"
= 2,22(/(9) 0
q
& 3,35 –100q&.
%> 0,1 % #
0q& 0,0075q&.
% 1q&
@# 2,12 C/(9).
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c
= (1,3...1,5) C/(9).
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@ .
( -
W ( )
U ( ), ’ -
@:
;
100
100
Z
Z
U
u
u
W
100
100
. (4.40)
9 , > # ! @-
W
! W
:
[
[
W
WW
GW
100
,
[
[
W
WW
GW
100
(4.41)
K> , :
100
[
&
UU
GW
, (4.42)
G
, G
, G
&
– @ -
, ! (@) -
.
( # :
& =
#
*
(4.43)
189
,
– ( );
,
– ! . L @:
& =
M
M
M
622,0*
29
18
, (4.44)
M
=
/
– , @
!
!
;
18/29 = 0,622 – @ .
K> > -
, :
= ,
M
M
1
622,0
x
.
() J (C/):
J = (+
&)t + r
0
x = (1,01 + 1,97x)t + 2493x,
c
– 1,01 C/ – # ;
– 1,97 C/ – # ;
& – , / ;
t – ( ), q&;
r
0
= 2493 – 0q&, C/.
’ &, t,
M
! J–& F.
*'(& %#'
1. .
2. ) ) %’& -
%.
3. Q" = «» «= ».
4. ' %.
5. .
6. ' =! &!.
7. @ () .
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9.
<= = -
.
10. = = .
190
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;
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