Mass balance grain whisky version 1.0

Basis

Maize
Milling

Maize
Water
Total

S1
S2
S3
Mass
Mass fraction Mass
Mass fraction Mass
Mass fraction
kg
kg
kg
79.2
0.88
79.2
0.88
95.04
0.88
10.8
0.12
10.8
0.12
12.96
0.12
90
1
90
1
108
1

Mass
Kg
Maize
Water
Total

Mass
kg

Barley
Milling

Barley
Water
Total

Barley
Water
Total

S10
S11
Mass fraction Mass
Mass fraction
Kg
79.2
0.88
79.2
0.88
10.8
0.12
10.8
0.12
90
1
90
1
S12
S13
S14
Mass fraction Mass
Mass fraction Mass
Mass fraction
kg
kg
8.9
0.89
8.9
0.89
0
0
1.1
0.11
1.1
0.11
4.45
1
10
1
10
1
4.45
1

S21
S22
Mass
Mass fraction Mass
Mass fraction
kg
kg
8.9
0.55
0
0
7.281818
0.45 6.713733
1
16.18182
1 6.713733
1
S28
S29
Mass fraction Mass
Mass fraction
kg
0
0
0
0
0.01584
0.94 8.52816
0.94
0.001011
0.06 0.544351
0.06
0.016851
1 9.072511
1

Mass
kg
Maize
Barley
Water
Total

Mass
kg
8.9
0.568085
9.468085

Mass
kg
0
0.01584
0.001011
0.016851

S23
Mass fraction
0.94
0.06
1
S30
Mass fraction
0
0.94
0.06
1

Cooking

Maize
Barley
Water
Total

S37
Mass
Mass fraction Mass
kg
kg
79.2 0.23331722
0.01584 4.6663E-05
260.2362 0.76663612
339.452
1

S38
Mass fraction Mass
kg

S39
Mass fraction

S4
S5
S6
S7
Mass
Mass fraction Mass
Mass fraction Mass
Mass fraction Mass
Mass fraction
kg
kg
kg
kg
95.04
0.88
79.2
0.88
15.84
0.88
95.04
0.88
12.96
0.12
10.8
0.12
2.16
0.12
12.96
0.12
108
1
90
1
18
1
108
1

S15
Mass fraction Mass
kg
0
0
8.9
4.005
1
1.545
4.005
1
10.445

Mass
kg

S16
S17
S18
Mass fraction Mass
Mass fraction Mass
Mass fraction
kg
kg
0.852082336
0
0
0
0
0.147917664
2.905
1
2.6145
1
1
2.905
1
2.6145
1

S24
S25
S26
Mass
Mass fraction Mass
Mass fraction Mass
Mass fraction
kg
kg
kg
10.68
0.94
10.68
0.94
2.136
0.94
0.681702
0.06 0.681702
0.06 0.13634
0.06
11.3617
1 11.3617
1 2.27234
1

Mass
kg
79.2
0.01584
10.80101
90.01685

Mass
kg

S31
Mass fraction Mass
kg
0.879835265
79.2
0.000175967 0.01584
0.119988768 10.80101
1 90.01685

S32
S33
Mass fraction Mass
Mass fraction
kg
0.879835265
0
0
0.000175967
0
0
0.119988768 225.0421
1
1 225.0421
1

S40
Mass fraction Mass
kg

S41
Mass fraction Mass
kg

Mass
kg
8.544
0.545362
9.089362

Mass
kg
0
0
51.72184
51.72184

S42
Mass fraction Mass
kg

S27
Mass fraction
0.94
0.06
1
S34
Mass fraction
0
0
1
1
S43
Mass fraction

Basis
S8
S9
Mass
Mass fraction Mass
Mass fraction
kg
kg
95.04
0.88
15.84
0.88
12.96
0.12
2.16
0.12
108
1
18
1

100 kg of grain
90 % maize
10 % barley

Checks
Maize milling IN
OUT
Barley milling IN
OUT
Cooking
IN
OUT
S19
S20
Mass fraction Mass
Mass fraction
kg
8.9 0.8290252
8.9 0.8290252
1.8355 0.1709748
1.8355 0.1709748
10.7355
1 10.7355
1

Mass
kg

1st mill

in
out

9.46808511
9.0893617

S35
S36
Mass fraction Mass
Mass fraction
kg
79.2 0.21593278
0
0
0.01584 4.3187E-05
0
0
287.565 0.78402404 27.3288
1
366.7808
1 27.3288
1

Mass
kg

Mass
kg

S44
Mass fraction Mass
kg

S45
Mass fraction

90
90
17.355
15.70886
366.7808
366.7808

kg
kg
kg
kg
kg
kg

TRUE
FALSE
TRUE

Cooker steam requirement
Grain feed
Specific heat maize
Specific heat water
Feed temp water
Cooking temperature
Water feed
Latent heat steam at 150 oC

kg
kJ/kg.K
kJ/kg.K
oC
oC
kg
kJ/kg

90.01685
1.465
4.187
20
150 at 4.5 bar
225.0421
2746

Heat required by cooker
Steam required

kJ
kg

139636.4
50.85083 neglecting radition losses

Allowing for radiation losses
heat loss to radiation
Actual steam required

%
kg

1.017129
51.72184

Cooling water requirement for flash vessel exit
Inlet temperature
oC
Grain mass in
kg
Water mass in
kg
Total mass in
kg
Specific heat water 1 bar
kJ/kg.K
Specific heat grain 1 bar
kJ/kg.K

99.7
79.2
260.2362
339.452
4.12
1.465

Energy in
Specific enthalpy of cooling water 1 bar
Mass water required

35646.03
83.95
424.6103

kJ
kJ/kg
kg

Flash separator vessel products
Mass of water
kg
Enthalpy of feed (150 oC, 4.5 bar) kJ/kg
Enthalpy of liquid (99.7 oC, 1 bar) kJ/kg
Enthalpy of vapour (99.7 oC, 1 bar)kJ/kg
Liquid exit
Vapour exit

kg
kg

287.565
632.18
417.6
2675.5
260.2362
27.3288