: ,
| F= ____ | |
| D= _____ ; d = ____ | |
| l1 = ; l2 = 1,5 ; l3=4; d= _____ | |
| l =200 d, l =150 d, | |
| S= 52 =0,7 | |
| : - - - = - | W=103 n=1460/ η..=0,85 η..=0,9 |
| =min+Q | min=5; =0,004/3 |
| : - - | ν=0,2 2 ρ=800/3 |
:
1.
2.
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3. :
3.1 , , .
( ).
, .
3.2 -Q
, .
= 0, Q = WHnH = 3/;
= 7 , Q' = Q η .. = 3/.
Q = 0, = min = 5 ;
Q = 200 3/, = min+ Q = .
( 1) (2), ( ).
3.3
:
|
|
|
ΔpΣ =Δp1+ Δp+ Δp+ Δp2+ Δp+ Δp΄2+ Δp΄+ Δp΄3+ Δp΄
,
. :
Re=4QT /πdTν=__________________________________________
Re< Re=2300,
Re>Re=2300,
, :
ΔpΣ= Δp+[ 1+ 2(D2-d2)/ D2]Q + 3Q2
1, 2 3 ,
Δp = 4F103/ πD2= ___________________________________________________________
1= [128 ν(l1 + l2+ l) ρ]/(πd4)=___________________________________________________ /(4)
2= [128 ν(l2 + l + l3+ l) ρ]/(πd4)=______________________________________________ /(4)
3= ρ/(2μ2S2)= ______________________________________________________________ /7
ΔpΣ1= ________
ΔpΣ2= ________
ΔpΣ3= ________
ΔpΣ4= ________
ΔpΣ5= ________
4
| Q, 3/ | 50∙10-6 | 100∙10-6 | 150∙10-6 | 200∙10-6 | |
| ∆∑, |
( 3). 3 D ( R). Ÿ Q = _____3/ =_____
5.
.. ( R), , ,
-
V = 4Q ../ πD2 = _______/
- ,
N = Q / η .. = ________
-
N = FV = _________
-
η = N / N = ____________
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| F, | D, | d, | l1, | d, | |
| 8,5 | |||||
| 3,5 | |||||
| 8,5 | 3,5 | ||||
| 3,5 | |||||
| 2,5 | |||||
| 8,5 | 2,5 | ||||
| 2,5 | |||||
| 3,5 | |||||
| 8,5 | 3,5 | ||||
| 3,5 | |||||
| 8,5 | |||||
| 3,5 | |||||
| 8,5 | 3,5 | ||||
| 3,5 | |||||
| 2,5 | |||||
| 8,5 | 2,5 | ||||
| 2,5 | |||||
| 2,5 | |||||
| 8,5 | 2,5 | ||||
| 2,5 | |||||
| 8,5 | |||||
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