HEMISKI Zbirka re{eni zada~i REAKTORI 3

^etvrti del. Idealen ceven reaktor (PFR)
To
349,
19 R 300 349,
19 R
T1
.
(16)
( 1
R)
( 1
R)
Za presmetkite, odnosno za re{avaweto na ravenkite (7)
i (11) za razli~ni recirkulacioni odnosi, se primenuva solverot
za diferencijalni ravenki od POLYMATH.
Za slu~ajot so R = 1 se dobieni slednive rezultati:
C A,
izlez
CA 1 2 1
0,
04 mol/l;
R 1,
0;
TR
349,
19 K ;
, 202;
T 324,
6 K;
V 1978 litri .
Eve kako izgledaat izve{tajot so rezultatite i grafi~kiot
prikaz:
POLYMATH Results
Calculated values of the DEQ variables
Variable initial value minimal value maximal value final value
V 0 0 1978 1978
Ca 2.02 0.0400184 2.02 0.0400184
Caizlez 0.04 0.04 0.04 0.04
Cao 4 4 4 4
R 1 1 1 1
v 600 600 600 600
To 300 300 300 300
Tizlez 349.19 349.19 349.19 349.19
Ca1 2.02 2.02 2.02 2.02
T1 324.595 324.595 324.595 324.595
T 324.595 324.595 349.19033 349.19033
k 0.2112103 0.2112103 2.8548875 2.8548875
r 0.4266448 0.1142481 0.8793982 0.1142481
D 2.3438703 1.1371413 8.7528825 8.7528825
ODE Report (RKF45)
Differential equations as entered by the user
[1] d(Ca)/d(V) = -r/v
Explicit equations as entered by the user
[1] Caizlez = 0.04
[2] Cao = 4
[3] R = 1
[4] v = 300*(1+R)
[5] To = 300
[6] Tizlez = 349.19
[7] Ca1 = (Cao+Caizlez*R)/(1+R)
[8] T1 = (To+Tizlez*R)/(1+R)
[9] T = T1+12.422*(Ca1-Ca)
[10] k = 2.4*(10^15)*exp(-12000/T)
[11] r = k*Ca
[12] D = 1/r
311