Boiler house Heat recovery systems
2
Sizing a Flash Vessel on up to Three Trap Pressures
Flash pressure bar g
Trap pressure bar g
0
0.5
1
1.5
2
2.5
3
4
5
6
7
8
9
10
% flash
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15
29.9 28.1 26.8 25.6 24.6 23.7 22.9 21.5 20.3 19.2 18.2 17.3 16.5 15.6 29.6 27.8 26.4 25.3 24.3 23.4 22.6 21.2 20.0 18.9 17.9 17.0 16.1 15.3 29.3 27.5 26.1 25.0 23.9 23.1 22.3 20.9 19.6 18.5 17.5 16.6 15.7 14.9 29.0 27.2 25.8 24.6 23.6 22.7 21.9 20.5 19.3 18.2 17.2 16.2 15.4 14.6 28.7 26.8 25.4 24.3 23.3 22.4 21.6 20.2 18.9 17.8 16.8 15.9 15.0 14.2 28.3 26.5 25.1 23.9 22.9 22.0 21.2 19.8 18.5 17.4 16.4 15.5 14.6 13.8 27.9 26.1 24.7 23.5 22.5 21.6 20.8 19.4 18.2 17.0 16.0 15.1 14.2 13.4 27.6 25.8 24.4 23.2 22.2 21.3 20.5 19.0 17.8 16.7 15.7 14.7 13.8 13.0 27.2 25.4 24.0 22.8 21.8 20.9 20.1 18.7 17.4 16.3 15.3 14.3 13.4 12.6 26.9 25.0 23.6 22.4 21.4 20.5 19.7 18.3 17.0 15.9 14.9 13.9 13.0 12.2 26.5 24.7 23.2 22.0 21.0 20.1 19.3 17.9 16.6 15.5 14.4 13.5 12.6 11.8 26.1 24.3 22.9 21.7 20.6 19.7 18.9 17.5 16.2 15.1 14.0 13.1 12.2 11.3 25.7 23.9 22.4 21.3 20.2 19.3 18.5 17.0 15.8 14.6 13.6 12.6 11.7 10.9 25.3 23.5 22.0 20.8 19.8 18.9 18.1 16.6 15.3 14.2 13.2 12.2 11.3 10.5 24.9 23.1 21.6 20.4 19.4 18.5 17.6 16.2 14.9 13.8 12.7 11.7 10.8 10.0 24.5 22.6 21.2 20.0 18.9 18.0 17.2 15.7 14.4 13.3 12.2 11.3 10.4 9.5 24.1 22.2 20.7 19.5 18.5 17.6 16.7 15.3 14.0 12.8 11.8 10.8 9.9 9.0 23.6 21.7 20.3 19.1 18.0 17.1 16.3 14.8 13.5 12.3 11.3 10.3 9.4 8.5 23.2 21.3 19.8 18.6 17.6 16.6 15.8 14.3 13.0 11.8 10.8 9.8 8.9 8.0 22.7 20.8 19.3 18.1 17.1 16.1 15.3 13.8 12.5 11.3 10.3 9.3 8.4 7.5 22.2 20.3 18.8 17.6 16.6 15.6 14.8 13.3 12.0 10.8 9.7 8.7 7.8 6.9 21.7 19.8 18.3 17.1 16.0 15.1 14.2 12.7 11.4 10.2 9.2 8.2 7.2 6.4 21.2 19.3 17.8 16.6 15.5 14.5 13.7 12.2 10.8 9.7 8.6 7.6 6.7 5.8 20.6 18.7 17.2 16.0 14.9 14.0 13.1 11.6 10.3 9.1 8.0 7.0 6.1 5.2 20.1 18.2 16.7 15.4 14.3 13.4 12.5 11.0 9.7 8.5 7.4 6.4 5.4 4.5
2.8 20
19.5 17.6 16.1 14.8 13.7 12.8 11.9 10.4 9.0 7.8 6.7 5.7 4.8 3.9 14 18.9 16.9 15.4 14.2 13.1 12.1 11.2 9.7 8.4 7.1 6.0 5.0 4.1 3.2 13 18.2 16.3 14.8 13.5 12.4 11.4 10.6 9.0 7.6 6.4 5.3 4.3 3.3 2.4 12 17.5 15.6 14.1 12.8 11.7 10.7 9.8 8.3 6.9 5.7 4.6 3.5 2.6 1.7 11 16.8 14.8 13.3 12.0 10.9 10.0 9.1 7.5 6.1 4.9 3.8 2.7 1.8 0.9 10 16.1 14.1 12.5 11.3 10.1 9.2 8.3 6.7 5.3 4.1 2.9 1.9 0.9 - 9 15.2 13.2 11.7 10.4 9.3 8.3 7.4 5.8 4.4 3.2 2.0 1.0 - - 8 14.4 12.3 10.8 9.5 8.4 7.4 6.5 4.9 3.5 2.2 1.1 - - - 7 13.4 11.4 9.8 8.5 7.4 6.4 5.4 3.8 2.4 1.2 - - - - 6 12.3 10.3 8.7 7.4 6.3 5.2 4.3 2.7 1.3 - - - - - 5 11.2 9.1 7.5 6.2 5.0 4.0 3.1 1.4 - - - - - - 4 9.8 7.7 6.1 4.8 3.6 2.6 1.7 - - - - - - - 3 8.3 6.2 4.5 3.2 2.0 0.9 - - - - - - - - 2 6.3 4.2 2.6 1.2 - - - - - - - - - - 1 3.8 1.7 - - - - - - - - - - - -
LP Factor = 1.673 1.149 0.881 0.714 0.603 0.522 0.461 0.374 0.315 0.272 0.240 0.215 0.194 0.177
AI-P404-12 AB Issue 3
Page 4 of 5
Sizing A Flash Vessel On Up To Three Trap Pressures
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