15
Correction factors to apply to the basic version data.
ETHYLENE GLYCOL
PROPYLENE GLYCOL
Percentage Of glycol in mass / volume
20 / 18,1
Freezing point [°C]
-8
Produced water temperature
4
2
0
-2
-4
-6
-8
-10
-12
CCPF - Cooling capacity
0,912
0,855
0,798
0,738
0,683
-
-
-
-
CCPA - Power input
0,967
0,957
0,947
0,927
0,897
-
-
-
-
CCQA - Water flow rate
1,071
1,072
1,073
1,075
1,076
-
-
-
-
CCDP - Pressure drop
1,090
1,095
1,100
1,110
1,120
-
-
-
-
Percentage Of glycol in mass / volume
30 / 27,7
Freezing point [°C]
-14
Produced water temperature
4
2
0
-2
-4
-6
-8
-10
-12
CCPF - Cooling capacity
0,899
0,842
0,785
0,725
0,670
0,613
0,562
-
-
CCPA - Power input
0,960
0,950
0,940
0,920
0,890
0,870
0,840
-
-
CCQA - Water flow rate
1,106
1,107
1,108
1,109
1,110
1,111
1,112
-
-
CCDP - Pressure drop
1,140
1,145
1,150
1,155
1,160
1,175
1,190
-
-
Percentage Of glycol in mass / volume
40 / 37,5
Freezing point [°C]
-22
Produced water temperature
4
2
0
-2
-4
-6
-8
-10
-12
CCPF - Cooling capacity
0,884
0,827
0,770
0,710
0,655
0,598
0,547
0,490
0,437
CCPA - Power input
0,880
0,870
0,860
0,840
0,810
0,790
0,760
0,724
0,686
CCQA - Water flow rate
1,150
1,151
1,153
1,154
1,155
1,157
1,158
1,159
1,161
CCDP - Pressure drop
1,190
1,195
1,200
1,210
1,220
1,235
1,250
1,269
1,290
Percentage Of glycol in mass / volume
20 / 19,4
Freezing point [°C]
-7
Produced water temperature
4
2
0
-2
-4
-6
-8
-10
-12
CCPF - Cooling capacity
0,874
0,807
0,740
0,690
0,641
-
-
-
-
CCPA - Power input
0,945
0,935
0,925
0,900
0,875
-
-
-
-
CCQA - Water flow rate
1,037
1,038
1,039
1,039
1,040
-
-
-
-
CCDP - Pressure drop
1,110
1,115
1,120
1,130
1,140
-
-
-
-
Percentage Of glycol in mass / volume
30 / 29,4
Freezing point [°C]
-13
Produced water temperature
4
2
0
-2
-4
-6
-8
-10
-12
CCPF - Cooling capacity
0,869
0,799
0,729
0,680
0,630
0,583
0,536
-
-
CCPA - Power input
0,935
0,923
0,910
0,888
0,865
0,838
0,810
-
-
CCQA - Water flow rate
1,072
1,071
1,070
1,069
1,069
1,068
1,067
-
-
CCDP - Pressure drop
1,160
1,175
1,190
1,200
1,210
1,255
1,300
-
-
Percentage Of glycol in mass / volume
40 / 39,6
Freezing point [°C]
-21
Produced water temperature
4
2
0
-2
-4
-6
-8
-10
-12
CCPF - Cooling capacity
0,848
0,784
0,719
0,670
0,620
0,570
0,520
0,478
0,438
CCPA - Power input
0,865
0,855
0,845
0,820
0,795
0,773
0,750
0,714
0,680
CCQA - Water flow rate
1,116
1,114
1,112
1,110
1,108
1,107
1,105
1,103
1,101
CCDP - Pressure drop
1,230
1,275
1,320
1,375
1,430
1,500
1,570
1,642
1,724
Based on leaving water temperature of the evaporator and condensing temperature = 7°C extract Cooling Capacity (kWf) and Compressors Power
Input (kWa).
Based on type and percentage of glycol extract CCPF, CCPA, CCQA, CCDP.
Then calculate.
Pf_brine = kWf x CCPF
Pass_CP_brine = kWa x CCPA
Then calculate brine flow rate:
Q_brine_evap [l/s]=CCQA x (Pf_brine [kW]*0.86/
D
T_brine)/3.6
where
D
T_brine is the difference between inlet-outlet evaporator water temperature:
D
T_brine=Twin_evap_brine-Twout_evap_brine
With this brine flow rate enter in abscissa on the water pressure drop of the evaporator then you have Dp_app.
Finally you can calculate the actual pressure drop of the brine on evaporator side:
Dp_evap_brine =CCDP x Dp_app
Corrective factors
BR - BP UNIT
Parameter
to set
Default
value
How to calculate
the value to set
Example
with TWE = 0°C
Example
with TWE = -5°C
TR06
7 °C
TWE +5°C
+5 °C
0 °C
TR04
12 °C
TWE +5°C
+5 °C
0 °C
HI06
5 °C
TWE -2°C
-2 °C
-7 °C
al12
4,5 °C
TWE -3°C
-3 °C
-8 °C
TWE
= Evaporator outlet desired water temperature
BR and BP units must be used with a mixture of water and antifre-
eze fluid (eg glycol) in a percentage enought to prevent freezing
of the mixture under all possible conditions, otherwise it will
VOID
THE WARRANTY
.
Please contact our customer service to set the following parame-
ters: →