Operation Limits - EAS ELECTRIC EMCH Serie Manual De Instalación Y Manual De Usuario

10. Operation Limits

10.1 Ethylene Glycol Solutions
Water and ethylene glycol solutions used as a thermal vector in the place of water reduce the performance
of the unit. Multiply the performance figures by the values given in the following table.
0
0
cPf
1
cQ 1
cdp
1
cPf: Correction factor of heating/cooling capacity
drop
24
COOLING
C
46
35
20
-5
-
-10 4 5 7
DELIVERY WATER TEMPERATURE
HEATING
C
27
20
7
-3
-15
30 35
DELIVERY WATER TEMPERATURE
Freezing point (°C)
-5 -10
Percentage of ethylene glycol in weight
12% 20%
0.98 0.97
1.02 1.04
1.07
1.11
cQ: Correction factor of flow rate
15 20 C
45 55 C
-15 -20
28% 35%
0.965 0.96
1.075 1.11
1.18
1.22
cdp: Correction factor of pressure
V.2
-25
40%
0.955
1.14
1.24