Despite such a complex process it is able to keep the interior of the fridge about 20o Celsius below the ambient temperature. However, when ambient reaches 38oC, then 18 degrees inside the fridge does not sound so good. Technically it could be called a "cooler" or "chiller" rather than a "refrigerator". As well, the heat whether from propane, 12V DC or 110V AC has to raise that chemical mixture to its boiling point before cooling can begin, so it is rather slow getting the chilling effect started.
Many modifications have been done to try to improve the efficiency, and here is one more.
The plan is to mount a Peltier unit (aka thermoelectric cooler or TEC) on the top of the Dometic fridge to assist or "boost" the regular ammonia cycle cooling.
Click on the image to see it full size.
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