Evaporation Rates
Evaporators
Hugot 33.26 pg 571 gives guide line values for specific evaporation rates for a quadruple effect evaporator
Operating between 200 kPa a and 14 kPa a
| Effect |
kg/m2/hr |
| First |
37.1 |
| Second |
35.2 |
| Third |
32.2 |
| Fourth |
27.8 |
Batch Vaccum Pans
| Pan Duty |
Heating Surface to Volume Ratio [m-1] |
Peak Evaporation Rate [kg/m2/hr] |
| Refined |
7 |
98 |
| Graining |
6 |
78 |
| A |
6 |
58 |
| B |
5.5 |
49 |
| C |
5.5 |
39 |
Pan evaporation rates in tonne/hr
| Pan Volume [m3] |
Refined |
Graining |
A |
B |
C |
| 10 |
6.9 |
4.7 |
3.5 |
2.7 |
2.1 |
| 15 |
10.3 |
7.0 |
5.2 |
4.0 |
3.2 |
| 20 |
13.7 |
9.4 |
7.0 |
5.4 |
4.3 |
| 25 |
17.2 |
11.7 |
8.7 |
6.7 |
5.4 |
| 30 |
20.6 |
14.0 |
10.4 |
8.1 |
6.4 |
| 35 |
24.0 |
16.4 |
12.2 |
9.4 |
7.5 |
| 40 |
27.4 |
18.7 |
13.9 |
10.8 |
8.6 |
| 45 |
30.9 |
21.1 |
15.7 |
12.1 |
9.7 |
| 50 |
34.3 |
23.4 |
17.4 |
13.5 |
10.7 |
| 55 |
37.7 |
25.7 |
19.1 |
14.8 |
11.8 |
| 60 |
41.2 |
28.1 |
20.9 |
16.2 |
12.9 |
| 65 |
44.6 |
30.4 |
22.6 |
17.5 |
13.9 |
| 70 |
48.0 |
32.8 |
24.4 |
18.9 |
15.0 |
| 75 |
51.5 |
35.1 |
26.1 |
20.2 |
16.1 |
| 80 |
54.9 |
37.4 |
27.8 |
21.6 |
17.2 |
| 85 |
58.3 |
39.8 |
29.6 |
22.9 |
18.2 |
| 90 |
61.7 |
42.1 |
31.3 |
24.3 |
19.3 |
| 95 |
65.2 |
44.5 |
33.1 |
25.6 |
20.4 |
| 100 |
68.6 |
46.8 |
34.8 |
27.0 |
21.5 |
