>> The difference between state of the art & general
>> practice in domestic refrigeration is impressive, & 
>> energy
>> intensive.

> why is that ?

Butting in ...

Probably due to insulation.
There have been some improvements in plant efficiency but, 
generally, keeping the coolth in is the greatest gain.
Cf the recent chest refrigerator thread where he uses < 1 
kWh/day to run a large fridge.

Typical absorption type refrigerators are substantially less 
efficient than typical compressor refrigerators. Stirling 
cycle units, available at a price, are better again. NZ uses 
almost exclusively compressor type units except for 
multi-voltage/energy types (mains/12V/gas) which tend to be 
absorption. I understand, perhaps incorrectly, that many US 
domestic refrigerators did/do use absorption systems .


        Russell


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