Airedale OptiChill FreeCool 500kW - 1365kW - Manual (Page 34)

OPTICHILL
™
Chillers
34
Chillers
Technical Manual : 6530166 V1.6.0 02_2013
Performance Data
PUMP PACKAGES (OPTIONAL EXTRAS)
CAUTION Full design water flow MUST be maintained at all times. Variable water volume is
NOT recommended and will invalidate warranty.
Use the formula below and the graphs provided to calculate the External Head Available:
Example Model Ref. = OPC800HE+D14
Ambient: = 35°C
Fluid = 100% Water
Inlet Fluid Temp. = 7°C
Outlet Fluid Temp. = 12°C (5°C

T)
Pump Selection = Single Standard Head - Standard ac Motor - Fixed Speed Option
Fluid Flow l/s = 40.0 l/s
EHA (kPa) = External Head Available
EHA (kPa) =
Total Pump Head Available
-
Unit Waterside Pressure Drop
EHA (kPa) = 123 - 33
EHA (kPa) = 90 kPa