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The ECO-2 optimizer is a
power management unit reduces battery demand by operating as follows:
1.) Whenever power
supply is abundant, (Mode A), the ECO-2 automatically triggers the system's
controller into run mode, starting the Ozefridge system, forcing it to
consume, convert and store the abundant electrical energy into the eutectic tank as thermal energy for
future use.
2.) When engaged, the
ECO-2 also operates the Ozefridge system at maximum compressor speed
to
provide the most refrigeration into eutectic storage while the power supply is abundant.
3.) When ECO-2 takes
control, the eutectic mass is maintained in a frozen state within the lower
to
provide the most refrigeration into eutectic storage while the power supply is abundant.
4.) During normal operations,
the ECO-2 checks constantly for the availability of abundant power. this
ensures that any abundant power is always detected and utilized.
5.) Whenever only limited
power (Mode L) is available, the frozen eutectic mass will hold-over the
cabinet
temperature for up to a day or so and if no further
opportunity to use abundant power occurs in the
meantime, the system automatically reverts to using the limited power supply
as further refrigeration is required.
Examples of how this
exclusive Ozefridge option can spare your batteries:
Example 1: Bill
sails his yacht mostly at weekends and when at sea battery power is at a
premium. During the week, Bill's yacht is in the pen connected to 240 volts
mains power so he leaves everything in the fridge and it runs automatically
on the mains ready for the next outing. While bill runs a small gen-set at
night for an hour or so and on occasions he is under motor.
Outcomes with a basic aluminum cold plate system:
If Bill
installs an air-cooled cyclic cold plate system, his fridge will run on
average say 10 minutes on and 20
minutes off. Without the backup of water
cooling, the run times will increase and efficiency
will
decrease as temperature rises during the hotter months. (Just when I needed you most!). This
type of cyclic
refrigeration requires power on demand throughout the 24-hour relying mostly
on the
batteries limited power
supply and using little of any abundant power when available. This is the
most
inefficient system with the greatest demand on batteries).
Outcomes with
Ozefridge Eutectic System:
If Bill installs an
Ozefridge eutectic system with air and water cooling, 12/24 Volt & 110/240
AC
operation
and the ECO-2 option, he will enjoy all the benefits of eutectic
refrigeration and have the
most
comprehensive power management, control, and failsafe system available.
When Bill
sails out from the pen, his eutectic tank will be frozen solid with no
further refrigeration
needed
until the eutectic mass is consumed. Now at
sea, the solar panel has topped up the battery yet there
is still plenty of sun and therefore abundant energy available. As the
battery volts exceeds 13.5
volts, the ECO-2 will cause the Ozefridge to run and store more energy in
the eutectic tank.
Later at
night Bill runs the 240 volt generator
for an hour or so and again the ECO-2 trips in and
unlike
other systems will choose to run direct from the gen-set's 240 volts leaving
any charge into
the
battery to be a net again.
With the
Ozefridge ECO-2 power management and STC control; this system would require
little if
any power
from the limited battery supply.
Example 2: Fred is
cruising and relies on solar and a Honda 1KVA generator to recharge his
battery bank.
Outcomes with the
Ozefridge eutectic system:
Fred has found that his
refrigeration is cold enough if his Ozefridge eutectic system has one freeze
per day
involving about 4 hours of total running
during the 24 hour period. Often Fred's batteries are
fully
charged yet there is still plenty of wind or solar power, power that would otherwise
be wasted,
but the
ECO-2 is causing the Ozefridge to store this as thermal energy. at night,
if gen-set is
used, the
Ozefridge will be at it
again, storing energy (refrigeration in advance) and sparing precious
battery
supply. Fred's system rarely uses power from his battery supply and when
in the marina the
Ozefridge
will run on the mains power from any country. Whenever a 110 or 240 VAC supply is
available,
the system automatically runs from the highest voltage available.
Other benefits of the ECO2
management system:
1) Less cost and weight:
Reduced demand on the battery bank means that the need for additional
battery power is reduced or eliminated.
2) Reducing the number of
times any battery is discharged increases its life considerably. With far
less battery demand, longer service life can be expected.
3) With less battery power
required for refrigeration, more is available for other requirements.
ECO2 is a product developed
by Ozefridge and is an option for Ozefridge Systems only.
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