The most efficient refrigeration is the chest type unit. It allows the cold air to stay in the unit when it is open.
It is well insulated. The density of chilled material inside increases the ability of the chilled products to retain their low temperature.
It is important though for the heat to escape from the refrigerator's external condensor plates to maintain efficiency; perhaps even to function at all. For this reason, most camper trtailers can't store a refrigerator in an enclosed space. However, a patented ventilation system which also filters the airflow, allows the refrigerator to be placed inside the Gullwing Box, and sealed tight.
We also recommend and use the ultimate energy efficient fridge unit using the unique Eutectic refrigeration system. Excellent cooling performance with the lowest energy consumption in it's class, eutectic refrigeration is suitable for extreme or high ambient temperatures.
The "Autofridge" comprises a compressor driven system combined with the power-saving advantages of the eutectic refrigeration system - the 'eutectics' act as a cold storage compound for the refrigeration contents. The eutectic fluid surrounds the outside of the four walls of the interior cabinet acting as an 'ice bank', and, in an ambient temperature of up to 32 degrees Celsius, having initially pre-chilled the AUTOFRIDGE, it need only be run on its maximum setting for a total of 5-6 hours per day (preferably 2 hours in the morning and ~3 hours in the afternoon), and during this run-time, the fluid is frozen and the cabinet contents are thoroughly chilled. The AUTOFRIDGE can be turned OFF in between the run-times, and the eutectic fluid acts as a thermal phase change (cold storage) compound and provides the continuous refrigeration hold-over for NIL power consumption. Figures quoted assume normal usage of your refrigerator, e.g. opening/shutting the lid to use or replace contents
The Autofridge can be operated in any one of the following ways :
- As a EUTECTIC refrigeration system - the AUTOFRIDGE is run for a total of 5-6 hours per day - split into two separate running periods of 2 hours in the morning and ~3 hours in the afternoon. The AUTOFRIDGE is turned "OFF" in the interim. Average daily power consumption for this mode of operation is ~20Ah/day @ 12V.
- As a CYCLIC refrigeration system - the AUTOFRIDGE is set on a refrigeration setting (e.g. '2') on the thermostat and left to cycle 'on' and 'off' throughout the day. Average daily power consumption for this mode of operation is ~24Ah/day @ 12V.
- As a CYCLIC freezer - the AUTOFRIDGE is set on one of its sub-zero settings ('5', '6' or '7') on the thermostat - the higher the setting, the colder the AUTOFRIDGE will cycle - and left to cycle 'on' and 'off' throughout the day. Average daily power consumption for this mode of operation is ~40Ah/day @ 12V.
The interior cabinet and the exterior construction of the Autofridge are white fiberglass the COLOUR is the best for hot climates and the integral strength of FIBERGLASS for use in rough conditions has been proven by the long-term popularity of fiberglass for boat manufacture.
The compressor chosen for use in the Autofridge is the latest Danfoss BD35F unit and controller. This compressor has been selected because of its remarkable efficiency, and it is supplied as a spring-housed unit - suitable for use in any off-road conditions.
