V2 |
0,0035 |
|
|
|
|
|
|
|
|
T2p |
20 |
|
|
|
|
|
|
|
|
T2k |
50 |
|
|
|
|
|
|
|
|
T1p |
100 |
|
|
T1k |
47,5 |
założenie |
p |
3 |
|
|
|
|
|
|
|
|
grubość stali |
1 |
0,001 |
|
|
|
|
|
|
|
a |
1 |
|
|
|
|
|
|
|
|
b |
0,4 |
|
|
|
|
|
|
|
|
h |
3 |
0,003 |
|
|
|
|
|
|
|
opór przeprływu |
200000 |
|
|
|
|
|
|
|
|
ρ2 |
994 |
|
|
|
|
|
|
|
|
c2 |
4175,5 |
|
|
|
|
|
|
|
|
v2 |
0,6 |
założenie |
|
|
|
ρ1 |
978 |
|
epsilon |
0,980 |
c1 |
4187 |
|
|
|
|
|
|
|
|
v1 |
0,3 |
założenie |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1.Strumień cieplny |
|
|
|
|
|
|
|
|
q=V2*ρ2*c2(T2k-T2p) |
|
|
|
|
|
|
|
|
435796,935 |
|
|
|
|
|
|
|
|
|
V1=q/ρ1*c1(T1p-T1k) |
|
|
|
|
|
|
|
|
0,002027 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2. Sumaryczny przekrój strumieni |
|
|
|
|
Wb |
3,479 |
|
S=V/v |
vzał |
|
|
|
|
|
Wa |
1,9825397659422 |
|
S1 |
0,006757122583307 |
|
|
|
|
|
R |
1,75481978206203 |
|
S2 |
0,005833333333333 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.Ilość szczelin dla każdego płynu |
|
|
|
|
|
|
|
n=S/S0 |
|
|
|
|
|
|
|
|
|
S0=b*h |
0,0012 |
|
|
|
|
|
|
|
|
n1 |
6 |
|
a |
|
|
|
|
|
|
n2 |
5 |
|
b |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4.Prędkość przepływu w szczelinie |
|
|
|
|
|
|
|
v=V/(n*So) |
|
|
|
|
|
|
|
|
|
v1 |
0,300 |
|
|
|
|
|
|
|
|
v2 |
0,600 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Dane nr 24 |
Dane pomocnicze |
Założenia |
Właściwości czynnika grzewczego w jego średniej temp. = 73,75 C |
Właściwości fizyczne czynnika ogrzewanego w jego średniej temp. = 35 C |
5. Zastepcza różnica tempertatur |
|
|
∆Tz=(T1k-T2p)-(T1p-T2k)/ln∆T1/∆T2 |
|
∆Tz=(∆Tz)przecwiprąd*epsilon |
36,882963035293 |
|
37,64 |
|
V2 = 0,0035 m3/s |
b = 0,4 m |
T1K = 47,5 C |
ρ1 = 975,75 kg/m3 |
ρ2 = 994 kg/m3 |
|
T2K = 50 C |
a = 1 m |
v1 = 0,3 m/s |
η1 = 0,000385 kg/m*s |
η2 = 0,0007259*3 = 0,002176 kg/m*s |
6. Liczba Re i Pr |
|
|
p = 3 |
h = 0,003 m |
v2 = 0,6 m/s |
c1 = 4189,625 J/kg*K |
c2 = 4175,5 J/kg*K |
Re=v*de*ρ/η |
|
|
|
|
T1P = 100 C |
de = 2h = 0,006 m |
|
λ1 = 0,669875 W/m*K |
λ2 = 0,624 W/m*K |
Pr=c*η/λ |
|
|
|
|
|
δpłyty = 0,001 m |
|
|
|
de=2h |
6 |
0,006 |
|
|
|
P = 200000 Pa |
|
|
|
T1śr |
73,75 |
|
|
|
|
T2P = 20 C |
|
|
|
ρ1 |
975,75 |
|
|
|
|
|
|
|
|
η1 |
0,000385 |
|
|
|
|
|
|
|
|
c1 |
4189,625 |
|
|
|
|
|
|
|
|
λ1 |
0,670 |
|
|
|
|
|
|
|
|
Re1 |
4561,9 |
|
|
|
|
|
|
|
|
Pr1 |
2,4079 |
|
|
|
|
|
|
|
|
T2śr |
35 |
|
|
|
|
|
|
|
|
ρ2 |
994 |
|
|
|
|
|
|
|
|
η2 |
0,002176 |
|
|
|
|
|
|
|
|
c2 |
4175,5 |
|
|
|
|
|
|
|
|
λ2 |
0,624 |
|
|
|
|
|
|
|
|
Re2 |
1644,7876 |
|
|
|
|
|
|
|
|
Pr2 |
14,5580 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
7. Współczynnik oporów przepływu |
|
|
|
|
|
|
|
λu1=(4,23*(0,65+1,07*logh))/Re^0,25 |
powyzej 1500 |
|
|
|
|
|
|
0,5973 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
λu2=(340*(0,65+1,07*logh))/Re^0,85 |
ponizej 1500 |
|
mam reynoldsa powyzej 1500 |
|
|
|
|
0,7708 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
8.Opory przepływu w szczelinie gładkiej |
|
|
|
|
|
|
|
λ01=0,316/Re^0,25 |
2100 powyzej |
|
|
|
|
|
|
0,0385 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
λ02=96/Re |
ponizej 2100 |
|
|
|
|
|
|
0,0584 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
9. Współczynnik wymuszonej burzliwości |
|
|
|
|
|
|
|
βt=1+(0,33-(0,66/de)ln(λu/λ0) |
|
|
|
|
|
|
|
|
|
βt1 |
1,6035 |
|
|
|
|
|
|
|
|
βt2 |
1,5678 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10. Współczynnik tłumienia burzliwości |
|
|
|
|
|
|
|
β=4-(1,65/de) |
|
|
|
|
|
|
|
|
|
3,725 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
11. Współczynnik wnikania ciepła |
|
|
|
|
|
|
|
Nu=0,022*pierλ0*β*βt*Re^0,825*Pr^0,54 |
|
|
|
|
|
|
|
|
|
α=Nu*λ/de |
|
|
|
|
|
|
|
|
|
Nu1 |
43,2462 |
|
|
|
|
|
|
|
|
α1 |
4828,2536 |
|
|
|
|
|
|
|
|
Nu2 |
59,3303 |
|
|
|
|
|
|
|
|
α2 |
6170,3524 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
12.Współczynnik przenikania ciepła |
|
|
|
|
|
|
|
K=1/1/α1+1/α2+h/λ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
K |
2536,91513140811 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
13.Potrzebna powierzchnia wymiany ciepła |
|
|
|
|
|
|
|
A=q/K*∆Tz |
|
|
|
|
|
|
|
|
|
4,56 |
4,66 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
14. Sumaryczna długość drogi przepływu strumienia |
|
|
|
|
|
|
|
L=A/2*n*b |
|
|
|
|
|
|
|
L1 |
1,0132 |
1,0339 |
|
|
|
|
|
|
|
L01 |
1,0000 |
1 |
|
|
|
|
|
|
|
L2 |
1,1737 |
1,1976 |
|
|
|
|
|
|
|
L02 |
1,0000 |
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
15. Ilość zwrotów |
|
|
|
|
|
|
|
i=L/L0 |
|
|
|
|
|
|
|
|
|
i1 |
1,013230 |
1,033908 |
|
przyjęte |
1,000000 |
1 |
i2 |
1,173689 |
1,197642 |
przyjęte |
1 |
1 |
16. Opory przepływu strumieni |
|
|
|
|
|
|
|
∆p=λu*L/de*ρv^2/2 |
|
|
|
|
|
|
|
|
|
∆p1 |
4429,0757 |
4519,4650 |
|
|
|
|
|
|
|
∆p2 |
26979,0126 |
27529,6047 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
17. Ilość płyt zapewniających odpowiedią ilośc szczelin |
|
|
|
|
|
|
|
z=n1*i1+n2*i2+1 |
|
|
|
|
|
|
|
|
|
11 |
11 |
11 |
|
|
|
|
|
|
|
Spłyty |
0,4 |
0,4 |
|
|
A |
4,60 |
4,5968 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
18. Sprawdzenie |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
A17/13 |
0,9929 |
1,0132 |
|
|
|
|
99,294 |
101,320 |
|
|