SCM Cuno 2 Aqua, Руководство пользователя

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EN
OEM Manual – CUBO
2
AQUA
Pag. 14-EN UMT/WG T BT Rev3.0 – 08/10/2021
Using this diagram you can calculate refrigerant
charge related to the evaporator inner volume.
Using this diagram you can calculate refrigerant
charge related to the pipe diameter and length. You
can refer even to the following table.
Pipe length (m)
Liquid
line
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
K65 -
120bar
3/8’’(gr)
230 270 320 360 410 460 500 550 590 640 680 730 770 820 860 910
K65 –
120bar
1/2’
(gr)
410 490 570 650 730 810 900 980 1060 1140 1220 1300 1380 1470 1550 1630
K65 –
80 bar
1/2’
(gr)
450 530 620 710 800 890 980 1070 1160 1250 1340 1420 1510 1600 1690 1780
Examples of refrigerant charge calculation
Example 1
Receiver Standing charge 2.4 kg
PHE Gas cooler Standing charge 0.21 kg
Evaporator Volume 2 dm 3 Calculated from first graph 0.9 kg
Pipe length 8m x K65 3/8” Calculated from second graph 0.4 kg
Pump down (from
evaporator)
Receiver / Evap ≤ 7.2 kg 3.3 kg
0,0
1,0
2,0
3,0
4,0
5,0
6,0
2 4 6 8 10 12
R
efri
ge
ran
t
ch
arg
e
(kg
)
Evaporator Volume (dm3)