- , .
- , , .
- .
. - , , .
.
.
.
1. .
2.
3. .
4. 0,3 1- 2-, 2- 3- .
5. - .
6. , 2,2.
7. , , , 2,2.
8. , .
9. , , , 2.
10. V= 3.
1. -
2. - .
3.
4. 23-01-99*
text= C; tht= C; Zht= .
5. 23-101-2004 .
6. 23-101-2004 .
7. 150/70C.
8. .
9. .
10. 95/70C.
11. =12000.
03.00. ר.
.
.
|
|
:
23-01-99* .
23-101-2004 .
23-02-2003 .
31-01-2003
.
, , , .
ρ - [/3]
λ - [/·C]
.
1. , () , :
(tint -text)·n
Rreq = [2·C/] (1)
άint·∆tn
:
tint = [C] , 23-101-2004 .
text = - [C] , 0,92, 23-01-99* .
n = (tint -text), 23-02-2003 (6, 6).
n=1- .
άint = [ /2·C] 23-02-2003 (7, 6).
∆tn = [C] 23-02-2003 (5).
Rreq = = = [2· C/](1)
2. :
Dd =(tint -tht)· Zht [C·] (2)
:
tint , (1)
tht = C , .. 8C 23-01-99* .
Zht =[ ]. 8 C 23-01-99* .
Dd = [C·] (2)
3. Dd , 23-02-2003 ( 4, 3), :
Rreq =a Dd + b [2· C/] (3)
:
a, b , .
a =
b =
Rreq = [2· C/] (3)
Rreq Rreq, , Rreq >Rreq;
4. Ro Rreq Rreq. Ro=Rreq ( 3), Ro :
1 δ 1
Rreq = +∑ + [2· C/] (4)
άint λ άext
:
άint , (1)
δ []
|
|
λ [/·C]
άext [ /2·C]
23-101-2004 (, ).
άext=23[ /2·C] .
1 δ 1
δ= (Ro (+∑ + ))· λ
άint λ άext
δ=
5. Ro. δ, 0,01.
Ro = [2· C/]
6. Rmin=0,63·Ro
Rmin= [2· C/]
Ro = Rmin