AIREDALE LogiCool LCC20 - Capacity Data - Free Cooling

LOGICOOL™
Chillers
20
Chillers
Technical Manual : 6521355 V1.14.0 11/2016
Performance Data
CAPACITY DATA - FREE COOLING
Determine the Free Cooling capacity as follows using the graphs provided:
Example
Model Ref. = LCC40
Ambient: = 35°C
Fluid = 20% Ethylene Glycol
Inlet Fluid Temp. = 7°C
Outlet Fluid Temp. = 12°C (5°C  T)
Customer Permanent Head Load = 20 kW
Calculate Waterflow l/s
Flow =
Output
3.9 x ΔT
Flow =
33.7
3.9 x 5
Flow =
1.73 l/s
Select Free Cooling Curve
ΔTFC (°C)=
Return Water Temp - Ambient Temp
ΔTFC (°C)=
15 - 5
ΔTFC (°C)=
10°C
Free Cooling (kW)
As plotted on graph =
30kW
Where:
Output = (kW) Cooling Duty, Output kW, refer to Capacity Data - DX (Mechanical) Cooling,
on page 19
ΔT = (°C) Difference of Entering Water and Leaving Water temperature
ΔTFC = (°C) Difference of Leaving Water temperature and Ambient temperature
All performance data is supplied in accordance with BS EN 14511-1:2013