Chillers optichill freecool, Chillers, Mechanical data - extra quiet continued – Airedale OptiChill FreeCool 500kW - 1365kW User Manual
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Chillers
OptiChill Freecool
Chillers
69
Technical Manual :
7197700 v1.2.0 02_2013
Mechanical Data - Extra Quiet Continued
31
32
Notes
Units
OFC076X20-66HS1
OFC081X20-76ML2
2 Row Free Cool
3 Row Free Cool
2 Row Free Cool
3 Row Free Cool
Cooling Duty - AC Fans
1
kW
749.8
744.9
807.9
802
Nom Input -Cooling Only
kW
265.1
267.9
285.4
288.5
EER
2
2.83
2.78
2.83
2.78
ESEER
7
2.83
2.79
2.91
2.86
SEER
7
2.82
2.77
2.88
2.84
Nominal Output - Free Cooling
5
kW
612.1
674.1
624.4
689.7
Ambient when Free Cooling = 100% Nominal DX
6
°C
0.3
1.7
-0.5
1
Cooling Duty - EC Fans
1
kW
746.1
740.9
803.5
797.2
Nom Input -Cooling Only
kW
250.8
253.6
271.3
274.4
EER
2
2.97
2.92
2.96
2.91
ESEER
7
3.25
3.2
3.31
3.26
SEER
7
3.2
3.15
3.26
3.2
Nominal Output - Free Cooling
5
kW
600.2
659.4
611.8
674
Ambient when Free Cooling = 100% Nominal DX
6
°C
0.1
1.5
-0.8
0.8
Cooling Duty - High Airflow EC Fans
1
kW
744.9
739.5
802
795.5
Nom Input -Cooling Only
kW
251.4
254.2
272
275.1
EER
2
2.96
2.91
2.95
2.89
ESEER
7
3.23
3.18
3.29
3.24
SEER
7
3.18
3.13
3.24
3.18
Nominal Output - Free Cooling
5
kW
596.4
654.3
607.7
668.5
Ambient when Free Cooling = 100% Nominal DX
6
°C
0
1.4
-0.8
0.7
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
13210
13290
13185
13265
Operating Weight
3
kg
14850
15080
14805
15035
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
72.8
72.8
58.1
58.1
Total Min. Water Flow
l/s
18.1
18.1
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
N/A
N/A
N/A
N/A
Maximum Airflow - EC Fans
m³/s
69.1
65.7
69.1
65.7
Maximum Airflow - AC Fans
m³/s
67.7
63.4
67.7
63.4
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
N/A
N/A
N/A
N/A
Maximum Speed - EC Fans
RPM
700
700
700
700
Maximum Speed - AC Fans
RPM
700
700
700
700
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
3858
3998
3953
4092
Max System Operating Pressure
Bar
10
10
10
10
Flow Rate 20% Ethylene Glycol
l/s
40.4
40.1
43.5
43.2
Pressure Drop 20% Ethylene Glycol
kPa
96.3
78.2
149.2
127.9
(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,