RWD0 pages

RWD
Air-cooled liquid coolers.
Cooling capacities 10 - 372 kW.
RWD provides medium temperature
cooling, or freecooling in winter
when mated with a chiller, ensuring
exceptional energy savings and
rapid pay-backs versus chiller only
solutions. RWD features all system
components installed on-board.
AN ENVIRONMENT-FRIENDLY SOLUTION
REDUCED COSTS, REDUCED ENVIRONMENTAL IMPACT
RWD liquid coolers, with finned coils and axial fans, are
the ideal solution for the free-cooling of applications in
which the process temperature is higher than the ambient
temperature for most of the year. Exploiting low ambient
air temperatures, RWD cools the fluid free of charge,
eliminating energy wastages caused by running refrigerant
compressors during winter.
Cooling towers suffer substantial costs due to the treatment
of the process water. Because it uses a closed circuit, RWD
does not require any form of process fluid treatment and
eliminates liquid losses caused by evaporation.
PLUG AND PLAY
From RWD200 the main components such as 3-way valves,
manifolds, and single or double pumps can be installed in
the unit. RWD can be installed outdoors thanks to the IP54
protection rating and epoxy surface coating of the frame.
Consequently no time is lost in component selection and RWD
installation is rendered quick and easy.
FREE-COOLING
In new plants customers can select the RWD model which
provides the ideal compromise between installation cost
and return on investment. In the case of existing plants
retrofitting an RWD equipped with a 3-way valve in series
with the system chiller is a viable solution. Installation of
an RWD not only increases the life of the chiller, but also
allows significant energy saving levels ensuring a return on
the initial investment in approximately twelve months.
ACCESSORIES
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MICROPROCESSOR CONTROLLER
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RWD units can be equipped with a microprocessor featuring
an intuitive graphic interface. The controller manages the
fans independently, starting them in steps in proportion to
the fluid inlet temperature.
Model RWD
010
Cooling power
Absorbed power
Water ow
Pressure drop
kW
kW
l/h
bar
Fans
Absorbed power
n°
dB(A)
Power supply
Depth
Width
Height
Height with legs
Weight
V/Ph/Hz
mm
mm
mm
mm
Kg
Water connections without manifolds
Water connections with manifolds
Electrical panel;
Microprocessor controller;
Electronic fan speed regulation (special);
Differing head pressure pumps in single or twin
configurations (RWD 200-350) (special);
Metal mesh protection filters for coils;
3-way valves + manifolds (RWD 200-350) (special);
60Hz power supply (special);
Manifolds kit;
Horizontal installation kit (RWD 030-150).
020
030
040
050
075
100
150
200
250
300
350
10
0,5
1797
0,162
20
1
3470
0,267
31
2
5315
0,337
41
2
7052
0,267
49
2
8522
0,384
69
4
11899
0,600
97
4
16821
0,341
133
6
23126
0,639
195
8
33822
0,330
248
10
43079
0,530
304
10
52783
0,390
372
12
64653
0,66
1
48
2
51
1
60
1
59
1
58
2
62
2
61
3
63
4
64
5
65
5
64
6
66
2145
779
1364
1534
413
2145
779
1364
1534
423
2145
779
1364
1534
433
3042
779
1364
1534
562
400±10%/3/50
3959
4860
779
779
1364
1364
1534
1534
679
821
4390
1510
1485
1064
5295
1510
1485
1271
5295
1510
2085
1543
6200
1510
2085
1803
G 2”
-
G 2”
-
230±10%/3/50
847
1682
440
440
763
763
57
109
G 1”
-
G 1”
-
G 1 ½” G 1 ½” G 1 ½”
-
G 2”
-
G 2”
DN 80
G 2” G 2 ½” G 2 ½”
DN 80 DN 100 DN 100
Values refer to standard units at the following operating conditions: 6T 10°C between water inlet temperature and ambient temperature, 6T 5°C
between water inlet temperature and water temperature at outlet from chiller located at sea level and with 0% glycol.
Model RWD 020 is available also in a version for connection to a 400V±10%/3/50Hz power supply.
Sound pressure level in hemispherical field at 10 m from condenser side and 1.6 m from ground. Values with tollerance ± 2 dB.
The sound levels refer to operation of the unit under full load in nominal conditions.