I heard about a company that uses a 240 volt Chinese made rotary compressor with a 12 to 240 volt inverter and they say it is two times more powerful than the Danfoss?
Really, sounds like smoke and mirrors! Here are the actual figures on each compressor: The Danfoss BD50 pumps 8750cc’s per minute while consuming 5.2 amperes per hour of running at a minus 23c evaporator temperature. (8750 is: recommended maximum speed = 3500 RPM x 2.5cc capacity) Similarly the Chinese made rotary 309 pumps 8652cc’s per minute while consuming a stated 8.00 amperes per hour of running. (8652 is: inductive speed at 240 VAC = 2800 RPM x 3.09cc capacity). So it appears that not only does the rotary compressor pump less but consumes greater than 50% more battery power doing so!
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