Chillers optichill freecool, Chillers, Mechanical data – regular quiet continued – Airedale OptiChill FreeCool 500kW - 1365kW User Manual
Page 59
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Chillers
OptiChill Freecool
Chillers
59
Technical Manual :
7197700 v1.2.0 02_2013
Mechanical Data
– Regular Quiet Continued
11
12
Notes
Units
OFC078R20-66ML1
OFC084R20-76HL2
2 Row Free Cool
3 Row Free Cool
2 Row Free Cool
3 Row Free Cool
Cooling Duty - AC Fans
1
kW
775.8
772.1
824
819.9
Nom Input -Cooling Only
kW
266.6
268.9
285.4
287.8
EER
2
2.91
2.87
2.89
2.85
ESEER
7
2.95
2.91
2.83
2.78
SEER
7
2.93
2.89
2.81
2.77
Nominal Output - Free Cooling
5
kW
687.3
766.2
700.8
783.9
Ambient when Free Cooling = 100% Nominal DX
6
°C
1.5
2.9
0.9
2.5
Cooling Duty - EC Fans
1
kW
766.3
763.2
817.7
814.6
Nom Input -Cooling Only
kW
254.4
257.3
275
278.2
EER
2
3.01
2.97
2.98
2.93
ESEER
7
3.38
3.33
3.2
3.15
SEER
7
3.32
3.27
3.16
3.11
Nominal Output - Free Cooling
5
kW
708.1
792
724.1
813.6
Ambient when Free Cooling = 100% Nominal DX
6
°C
2
3.4
1.4
3
Cooling Duty - High Airflow EC Fans
1
kW
766.5
763.4
817.7
814.5
Nom Input -Cooling Only
kW
254.8
257.6
275.3
278.4
EER
2
3.01
2.96
2.97
2.93
ESEER
7
3.36
3.31
3.18
3.13
SEER
7
3.3
3.25
3.14
3.09
Nominal Output - Free Cooling
5
kW
728.2
816.2
745.4
839.6
Ambient when Free Cooling = 100% Nominal DX
6
°C
2.4
3.8
1.8
3.4
Capacity Steps
%
20, 30, 40, 55, 65, 80, 90, 100
Dimensions (H x W x L)
mm
2600 x 2200 x 11850
2600 x 2200 x 11850
Machine Weight
kg
13155
13225
13245
13315
Operating Weight
3
kg
14795
15015
14865
15085
Construction Material
Base: Plain Galvanised Steel, Panels: Galvanised Sheet Steel, Epoxy Baked
Powder Paint, Light Grey (RAL 7035)
Evaporator - Type
Shell and Tube
Insulation
Class O / UV Stable
Total Max. Water Flow
l/s
58.1
58.1
58.1
58.1
Total Min. Water Flow
l/s
14.4
14.4
14.4
14.4
Condenser - Type
Rifled Copper Tube / Aluminium Fin
Face Area Total
m²
39.6
39.6
39.6
39.6
Maximum Airflow - High Airflow EC Fans
m³/s
106.1
101.5
106.1
101.5
Maximum Airflow - EC Fans
m³/s
99
94.5
99
94.5
Maximum Airflow - AC Fans
m³/s
90.7
86.1
90.7
86.1
Condenser Fan & Motor
Sickle Bladed Axial Fan
Quantity
20
20
20
20
Diameter
mm
800
800
800
800
Maximum Speed - High Airflow EC Fans
RPM
1080
1080
1080
1080
Maximum Speed - EC Fans
RPM
980
980
980
980
Maximum Speed - AC Fans
RPM
900
900
900
900
Compressor - Type
Semi-Hermetic Twin Screw Compressor
Quantity
2
2
2
2
Oil Charge Volume (Total)
l
35 + 35
35 + 35
35 + 35
35 + 35
Oil Type
BSE 170 Polyol Ester Oil
Refrigerant - Control
Electronic Expansion Valve
Refrigerant Pre-charged
R134a
Charge (Total) CCT1 + CCT2
kg
180 + 181
180 + 181
182 + 183
182 + 183
Water Connections
Type
Grooved Terminations
Inlet / Outlet - Unit
DN200
DN200
DN200
DN200
Water Drain / Bleed - Evap
inch
0.5
0.5
0.5
0.5
Water System - Volume
l
1635
1783
1624
1771
Minimum System Water Volume
4
l
3948
4089
3863
4003
Max System Operating Pressure
Bar
10
10
10
10
Flow Rate 20% Ethylene Glycol
l/s
41.8
41.6
44.3
44.1
Pressure Drop 20% Ethylene Glycol
kPa
134.7
115.5
154.7
133.1
(1) Based on units performance at 15/10°C return/supply temperatures, 35°C ambient, 20% Ethylene Glycol.
(2) EER = DX Cooling Output / (Compressor Input Power + Fan Input Power)
(3) Based on standard unit without options, operating weight includes refrigerant charge and water volume.
For unit weights with waterside options fitted please refer to Airedale.
(4) For minimum system water volume calculation, refer to Design Features & Information - Minimum System Water Volume Calculations.
(5) Nominal Free Cooling Output at 15/10°C return/supply temperatures, 3°C ambient, 20% Ethylene Glycol.
(6) Ambient temperature that Maximum Nominal DX Duty can be achieved using Free Cooling only.
(7) ESEER / SEER based upon unit operating at 12 / 7 °C return / supply temperature, 35°C ambient,