Airedale LogiCool FreeCool 40kW Manual de usuario descargar pdf (Pagina 21)

Chillers

LOGICOOL™

Chillers

Technical Manual : 6521355 V1.8.0 07/2014

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



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 20

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

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Airedale LogiCool FreeCool 40kW Manual de usuario Pagina 21