:
- . ;
I ([6] .1);
- [II]
([5] .2);
tht = 8,4 º ([6] .1);
zht = 236 ([6] .1);
text = 40º ([6] .1);
([5] .1);
55%;
tint = + 18º
int = 8,7 /2.
aext = 23 /2.
.5.2.1. .
5.2.1
/ | , /3 | δ, | ,/(췰) | R, 2/ | |
0,030 | 2,04 | 0,015 | |||
0,004 | 0,17 | 0,024 | |||
0,046 | /λ | ||||
- | 0,03 | 0,93 | 0,032 | ||
, 2 | 0,008 | 0,17 | 0,047 |
1). Dd = (tint tht)zht, Dd - - .
Dd = (tint tht)zht = (18-(-8,4)) 236 = 6230,4ºѷ.
2). Rreq= aDd+b, Rreq - .
=0,00025
b=1,5
Rreq = aDd+b = 6230,4 0,00025 + 1,5 = 3,0576 2/.
3). R0= Rreq
R0 = Rsi + Rk + Rse , R0 .
Rk= R0 (Rsi + Rse)
Rsi = 1/ int
Rse= 1/ aext
Rk= R0 (1/ int + 1/ aext) = 3,0576 (1/8,7 + 1/23) = 2,90 2 /
4). Rk=R1+ R2+R+ R4+R5, Rk - .
R -
R1, R2, R4, R5 - 1, 2, 4, 5 .
R =Rk (R1+R2+ R4+R5)
R =Rk (R1+R2+ R4+R5) = 2,9 (0,015+0,024+0,032+0,047) = 2,782 /
5). δ = R , δ -
δ = R = 0,046 2,78 = 0,128
δ =130 .
R =δ / =0,13/0,046=2,83 2 /
1). .
R0 = Rsi + R1+ R2+R +R4+ R5+ Rse
R0 = Rsi + R1+ R2+R +R4+ R5+ Rse = 1/8,7 + 0,015+0,024 + 2, 83 + 0,032+ 0,047+ 1/23 =3,11 2/.
R 0 = 3,11 2/ > Rreq = 3,0576 2/ .
2). - .
:
∆t = (tint text)/ R0 aint = (18 (-40))/3,11 8,7 = 2,14 º.
∆ t n =0,8(tint td), 6
t int = 18 º =55% t d = 8,2 º.
|
|
∆ t n =0,8(tint td)=0,8(18-8,2)=7,84 º
∆ t n =6 º
∆ t = 2,14 < ∆ t n = 6º .
τsi > td:
τsi = tint [n (tint text)/(R0 aint)] = 18 [1(18 (-40))/3,11 8,7] = 15,86º.
t int = 18 º =55% t d = 8,2 º. τsi =15,86 º > td = 8,2 .
. .
5.3.
tint = +16 º.
1). Dd = (tint tht)zht = (16-(-8,4)) 236 = 5758,4ºѷ.
2). Rreq= aDd+b, Rreq - .
=0,000025
b=0,2
Rreq = aDd+b = 5758,4 0,000025 +0,2 = 0,344 2/.
Rreq.
.
R0r =0,43 2/;
τ1 = 0,8; τ2 = 0,8
τ = τ1 τ2 = 0,8 0,8 = 0,64.
. R0r =0,43 2/ >Rreq =0,344 2/.
.
5.4. . .
:
S - ;
S - , , , IV S=L.1,5, L - , - ;
, , ( . 4);
eN , eN =n . m, m ( . 2), n ;
η0 ( .5)
, ( .6)
τ0 , τ0 = τ1. τ2, τ1 , τ2- , ;
r1 , , ( .9)
:
- . ;
L= 60 ;
IV;
2
n=1,5%
1=1,3;
|
|
2=1,4;
1=9,6, 2=13,2;
1=42, 2=24;
;
τ = τ1 τ2 = 0,8 0,8 = 0,64.
.5.4.1. .
, , , .
1) 1=9,6.
1=9,6; 1=42;
-;
m1=0,85;
eN1 =n . m1=1,5.0,85=1,275%
S1= L.1,51=60 . 1,5 . 9,6=8642
h1=1-0,6=9,6-0,6=9
l1=1,5 h1=1,5 . 9=13,5
L/B1=60/42=1,429
B1/ h1=42/9=4,667
B1/ h1 | 4,667 | ||
L/B1 | |||
22,334 | |||
1,429 | 21,766 | ||
1,5 | 18,334 |
η01=21,766
ρ=0,4
l1/1=13,5/42=0,321
L/B1=60/42=1,429
B1/ h1=42/9=4,667
B1/ h1 | l1/1 | L/B | |||
0,3 | 1,429 | ||||
1,28 | 1,240 | 1,21 | |||
0,321 | 1,279 | ||||
0,4 | 1,429 | ||||
1,49 | 1,427 | 1,38 | |||
0,3 | 1,429 | ||||
1,46 | 1,403 | 1,36 | |||
0,321 | 1,469 | ||||
0,4 | 1,429 | ||||
1,82 | 1,717 | 1,64 | |||
B/ h1 | L/B | ||||
1,279 | |||||
4,667 | 1,437 | ||||
1,469 | |||||
r1=1,437
S= 864 . 1,3 . 1,275 . 21,766/(100 . 0,64 . 1,437)=338,932
, . text= -40º < - 31 º.
Ʃl=4,8 . 8= 38,4
h= S/ Ʃl=338,93/38,4=8, 83
1=9,6 , .
h1=5,4 , h2=1,2.
.
2) 2=13,2.
2=13,2; 2=24;
-;
m2=0,9;
eN2 =n . m2=1,5.0,9=1,35%
S2= L.1,52=60 . 1,5 . 13,2=11882
h2=2-0,6=13,2-0,6=12,6
l2=1,5 h2=1,5 . 12,6=18,9
L/B2=60/24=2,5
B2/ h2=24/12,6=1,905
B/ h1 | 1,5 | 1,905 | |
L/B | |||
9,5 | |||
2,5 | 8,5 | 8,905 | |
8,5 |
η02=8,905
ρ=0,4
l2/2=18,9/24=0,788
L/B2=60/24=2,5
B2/ h2=24/12,6=1,905
B2/ h2 | l2/2 | L/B2 |
0,5 | 1,2 | |
0,788 | 1,471 | |
1,0 | 1,67 | |
1,905 | 1,858 | |
0,7 | 2,08 | |
0,788 | 2,326 | |
0,8 | 2,36 |
r2=1,858
S= 1188 . 1,4 . 1,35 . 8,905/(100 . 0,64 . 1,858)=168,15 2
, . text= -40º < - 31 º.
Ʃl=3 . 8= 24
h= S/ Ʃl=168,15/24=7,01
h1=6, h2=1,2.