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Break-even point for home electric generator powered bynatural...
Maybe 2.00$ a kilowatt as an example only, but possibly true for some .
The Generac air cooled HD is not designed for prime continous power, Any 3600rpm units life is 3000-5000 hrs or 4 months or so, how it is loaded is important. Im sure Generac has other prime power units, but the cost. Figure only 1/3rd of the ng burned is converted to electricity, heat and friction make up th other 2/3 . An 1800 rpm unit lasts 4 times as long 10-20000 hrs. A 900 rpm Lister over 100000 hrs, that is prime power. A cheap Honda or Yamaha inverter type with load dependant rpm could theoreticly last 100,000 hrs. if you kept rpm under 900. The 3000w unit can do that developing only 1-200 watts. For longest life get a Yamaha or Honda inverter converted to Ng and keep rpms low. 10,000-12,000 hrs off them is common at medium 50% load , but at 900 rpm 100000 is possible. Yamaha is heard to have superior electronics, but I wonder if it isnt really that most people buy the 1600-2000 watts units and just overload them and never consider surge load, effectively people just abuse them. |
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