.1 1 4
20 , | D 20 | |
20 , | d 20 | |
(.), | ||
, C | t | |
, | ||
- | . Δ p | |
- | 35 | |
- | ||
, | ||
- | 12189 | |
- | ||
, | L1 | 10,8 |
, | 3,9 | |
, | 6,8 |
.
1. D d ( t):
D = D 20 [1+ γ (t − 20)]= 710*[1+0,0000106*10-6(40-20)]=710.15 (1.1)
d = d 20 [1+ γ (t − 20)]= 390*[1+0,0000106*10-6(40-20)]=390.12 (1.2)
γ ;
D20, d20 20.
γ 10 % : (1.3)
γd=10-6[ae+10-3 t be-10- 6 t2 ce]=10-6[15,6 + 10-3*40*8,3-10- 6*40*2 *6,5]=390,12*10-6
γD=10-6[ae+10-3 t be-10- 6 t2 ce]=10-6[15,6 + 10-3*40*8,3-10- 6*40*2 *6,5]=0,0000106*10-6
, be, ce , . 2
(2.3) 200
700
2
be | ce | ||
35 | 0,2 | 10,4 | 5,6 |
2.1
be | ce | ||
12189 | 15,6 | 8,3 | 6,5 |
2. β : (1.4)
β = = =0,55
3. : (1.5)
=1,05
4. ∞ : (1.6)
=0,5959+0,0312*0,552.1-0,1840*0,558+0,090*0,036*0.554(1-0,554)-1-0,0337*0,036*0,553=0,6067
L 1 = l 1 /D ; L 2 = l 2 /D . .3
|
|
L1 = 25,4/710,15=0,036
L2 = 25,4/710,15=0,036
3
L1 | 25,4/ D | ||
L2 | 0,47 | 25,4/ D |
5. R , . (1.7)
R=0,1
4
R , | ||
: - - - : - - : - - | <0,03 <0,1 <0,1 <0,1 <0,2 <0,3 <0,05 <0,2 |
6. (1.8) :
ARe = 0,5.
7. K : (1.9)
=1+0,554(-0,03)*0,5=1
= 0,071 lg -0,04= - 0,03
8. K
: (1.10)
d <125 ( d ≥ 125 K = 1)\
= =1,0547-0,0575*2,7 =0,99
K 1
r - , : (1.11)
=
=0,195- (0,195-0,05)(1-2,7- 3/3)=0,105
r=0,05
9. ε : (1.12)
ε=1/(1- β4)1/2=1/(1- 0,554)1/2=1
10. = ∞ : (1.13)
=
=1,05*0,6*1*1*1* =151,2 /
ρ ; ∞
Re → ∞.
12. Re ∞ qm ∞ : (1.14)
= =0,016* =16000
13. :(1.15)
Re = Re ∞* KRe= 16000*1,024=16384
=1+ =1,024
KRe = 1,024
14. :
q m= (q m∞ KRe)*(K ′/ K )=(151,2*1,024)+(1/1)=154,8 / (1.16)
5
2 | 2 | 4 | N2 | ||
0,3 | 58,3 | ||||
ρ | 1,842 | 1,165 | 0,0837 | 0,6679 | 1,166 |
15. : (1.17)
ρdc=(γCO2ρCO2+ γCOρCO+ γH2ρCH2+ γCH4ρCH4+ γN2ρCN2)/100=
=(20*1,842+25*1,165+13*0,0837+0,3*0,6679+58,3*1,166)/100=
=1,4735627 /3
16. : (1.18)
=1,4736 =0,19387 /3
17. : (1.19)
ρϕ = ρ d + ρ = ρ d + ϕ*ρ..=1,1004+0,4*1,1004=1,1125 /3
ϕ=0,4; ρ.=4,24;
18. K :
= (γ1*1+ γ2*2+ γ3*3+ γ3*3+ γ4*4) /100=
|
|
=(20*1,3+25*1,4+13*1,141+0,3*1,3+58,3*1,4)/100=77,0392 (1.20)
K 1, K 2, K 3 , . k :
19. : (1.21)
μ = 17,43⋅10-6 ⋅.
IV.