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/DT_brine)/3.6
where DT_brine is the difference between inlet-outlet evaporator water temperature:
DT_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: →
To Next Page
Loading...
