Install 12 or 24 volt Refrigeration into your cabinet….
……..Without Killing your Battery!
Adding refrigeration can create new power problems. The built-in ‘ECO2’ power management provides the solution.
To explain: Firstly, all Ozefridge eutectic systems store up to a day or so’s refrigeration requirements in advance, usually involving only one or two long run periods per day. Cabinet temperatures are sustained by the eutectic mass. (Hold-over refrigeration… cooling in advance!) Other refrigeration types with virtually no similar hold-over ability, have to cycle once or twice per hour every hour, therefore consuming more power. Unlike the eutectic hold-over system, they rely on having constant battery power available every hour, 24 hours a day.
Secondly, the built-in ECO2 power management monitors the power type and voltage available then causes the Ozefridge unit to automatically start up and run whenever power is abundant and also to automatically operate from the highest voltage presented. Abundant power is whenever battery voltage reads above13.7 VDC, (power that would otherwise be wasted) or if 240 VAC is detected via the optional AC/DC converter.
Running whenever power is abundant reduces the demand on the battery increasing its life, and often eliminates the need for an additional battery. Apart from providing greater surety of refrigerated product storage, there are also cost, battery consumption and weight savings with a eutectic holdover system and Ozefridge ECO2.
Left: The stainless steel eutectic plate is located
inside the fridge cabinet and acts like a very
low temperature renewable ice-block,
storing thermal energy whenever electrical
power is abundant.
Right: Each system is pre-gassed with the safe R134arefrigerant, ready to install. See ‘Packages’ page for full details..
Note: All comments and values quoted in this website, relate to operating as a domestic use refrigerator in typical Australian conditions and within an adequately insulated cabinet .
Below: Consumption testing:
(An Ozefridge Package 2 fitted to a domestic cabinet)
This 150 litre cabinet maintained a temperature of between +2°C and +4°C.
It consumed 19.6 Amp hours per 24 hours, averaged over a fourteen day period with daily temperatures 34°C to 44°C.
This cabinet only has 70mm thickness walls and was tested empty.
The Ozefridge data logger (left) provided cabinet and ambient temperatures, DC voltage, current, run wattage and accumulated watts. Averaging less than 20 A/H per day in extreme conditions, it is an example of the efficiency of the eutectic refrigeration method.
This cabinet / system can operated as stand alone powered by a single 80 watt solar panel. With ECO2 causing the eutectic mass to refreeze during ‘abundant power’ periods, and holding over at night, no draw from battery is needed making it an ideal install for off grid users.
Visitors are welcome (call first) to see this test model operating along with tours of our manufacturing facility at 4423 Murray Valley Highway Yarroweyah. (The cross roads of Australia)