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Old 02-12-2019, 06:15 PM   #21
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When the temperature is higher compressor both runs more and the head pressure is higher so that the compressor draws more current.
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Old 02-12-2019, 06:18 PM   #22
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Inverter drives actually change the 60Hz line AC to DC and then change it back to variable frequency 3 Phase AC. This technology is used in A/C units, Washing machines and some refrigerators.
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Old 02-12-2019, 06:20 PM   #23
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Quote:
Originally Posted by Kab449 View Post
The current trend in class B RVís is no propane and no generator. The are putting Lithium Battery packs in them to drive a 12 volt AC unit. The DC motor driving the compressor lends itself to increased efficiency to make that possible. The fact that the heating side is possible is just a plus.
That is the context of my reply to this thread.
I agree that the trend is toward electric only RVs. An efficient heat pump system might be OK for brief heating, but the more common approach is a fuel fired heater since they can also provide hot water.

- - Mike
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