aries free cooling0 pages

ARIES
Air-cooled chillers featuring integrated freecooling with R407C equipped
scroll compressors.
Freecooling offers notable energy
savings and rapid paybacks in
industries requiring cold water all
year round. Aries FC features separate
refrigeration
and
freecooling
sections, for improved efficiency
versus traditional solutions.
ENORMOUS UTILISATION POTENTIAL
INDEPENDENT AERAULIC SECTIONS
Aries Free-Cooling units are the ideal solution for industrial
processes which require cooling throughout the entire year,
especially when the ambient air temperature is lower than
the temperature of the fluid returning from the process circuit.
As an example of the potential of the free-cooling operating
mode, for applications with 24 hour/day production cycles
the annual percentage of free-cooling operation can be in
excess of 90%, resulting in energy savings in the region of
40-50%.
The total aeraulic independence of the free-cooling coils with
respect to the condensing coils is achieved using dedicated
fans and coils within separate compartments. This solution
offers maximum efficiency in the exploitation and control
of the free-cooling mode, providing a simple and reliable
solution to the problems associated with conventional
designs in which the free-cooling coils are positioned in
front of the condensing coils and served by shared fans.
In fact such conventional solutions result in a significant
reduction in energy savings because of the higher power
consumption of the fans and the critical conditions caused
by the concurrency of conflicting requirements, namely the
need to reduce the air flow for condensing pressure control
and to increase it to maximise the useful free-cooling effect.
ADVANCED SOFTWARE
Apart from managing the free-cooling parameters, the
innovative software, specifically developed by MTA, controls
the automatic rotation of the compressors start sequence, the
unloading procedure and the management of the optional
electronic thermostatic valves.
The microprocessor also interfaces with peripheral
systems at several levels, from user level to supervision
network level. GSM modem connection is offered, as is
guaranteed compatibility with the most widely used BMS
system communication protocols: BACnet, Lonworks, and
ModBus.
A PLUG AND PLAY SOLUTION
AS 201-301 FC are equipped, as standard, with a storage
tank with a finned evaporator immersed within it, whilst
AS 351-751 FC feature a shell-and-tube evaporator and an
optional storage tank. All hydronic components can be preinstalled inside the unit, creating a packaged solution. This
translates into savings in time otherwise required to select
hydraulic circuit components plus less complex installation
procedures and hence a reduction in installation times and
costs.
VERSIONS
N - standard;
SN - low noise;
SSN - super-silent;
Low ambient temperature version (min. -15 °C).
ACCESSORIES
Compressor discharge and intake valves;
Condensing section electronic fan speed regulation;
Electronic thermostatic valves;
Storage tank (AS 351-751 FC);
Single or double pumps with standard or elevated head
pressures;
Metal mesh protection filters for coils;
Pre-coated coils for aggressive ambients;
Crankcase heaters;
Phase monitor;
Power factor correction capacitors;
Antivibration dampers kit;
Replicated remote user terminal kit;
Supervisor kits.