And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Label is misleading or specs on Amazon are - or both. Label gives operating power of 12V * 16A which is 192W. Run at 50% is 96W. Price is too low for such a contraption and it is made in China, so I suspect even the Amazon ratings (17W) are too high and working life even lower.
Home built one, its a 2000 watt 12vdc, 74 inch 5 blade turbine, on a 40ft tower, live on a ridge, get pretty decent low wind speed, charging a 12dc fork truck battery, old school wet acid lead cell, 1265 amp hrs at 20hr rate, mostly with the average wind, 5-11 mph, with the large torque blade set, that is like 200-300 watts steady all day/night, got to break 7mph to get past battery voltage. With some large solar panels, have to find ways to dump the extra, built a pre-heater hot H2O tank, using DC water heater elements, have 2400 watts of elements cause the style of turbine i got has no braking, but by always having a load on the shaft keeps rpms safe, if its a really big blow have wited btake switch that shorts out the wild AC side of the generator, which is a permanent magnet style alternator, wired in Delta, no brush type alternator, actually its two alternators on a common shaft. The great part is the pre heater, feeds a propane tankless heater, and thats where we get huge savings in costs, have a AC electric tankless too, runs off a 11000 watt Lincoln welder generator, back feeds from the shop back to the house, so no matter what my wife can have hot water, whole thing is off grid, took 9 years to pay itself back, only thing we run off mains power is two meat freezers, costs 30 bucks a month for those, they are on regular 220ac mains grid power, and some shop equipment that are 220ac. Lot of work, long terms its considerable savings, and when power goes out most time we do not notice it till dark, cause a neighbors street light is out. Long term i think its more practical than a grid feed type system.
I was looking into those things for a spell, it gets a bit breezy on the rooftop.... But you really need to be out in a very large field or near the shore, etc., to make those things worthwhile. If you're not getting a consistent 10+ mph breeze, aka like by the shore, then they really won't even charge a battery. Needs a minimum wind to even 'make electricity'.
Peak output is like 30 Watts.
ReplyDeleteIt'll keep your batteries topped off but won't really charge 'em. Not useless, but close.
Label is misleading or specs on Amazon are - or both.
ReplyDeleteLabel gives operating power of 12V * 16A which is 192W. Run at 50% is 96W.
Price is too low for such a contraption and it is made in China, so I suspect even the Amazon ratings (17W) are too high and working life even lower.
Home built one, its a 2000 watt 12vdc, 74 inch 5 blade turbine, on a 40ft tower, live on a ridge, get pretty decent low wind speed, charging a 12dc fork truck battery, old school wet acid lead cell, 1265 amp hrs at 20hr rate, mostly with the average wind, 5-11 mph, with the large torque blade set, that is like 200-300 watts steady all day/night, got to break 7mph to get past battery voltage. With some large solar panels, have to find ways to dump the extra, built a pre-heater hot H2O tank, using DC water heater elements, have 2400 watts of elements cause the style of turbine i got has no braking, but by always having a load on the shaft keeps rpms safe, if its a really big blow have wited btake switch that shorts out the wild AC side of the generator, which is a permanent magnet style alternator, wired in Delta, no brush type alternator, actually its two alternators on a common shaft.
ReplyDeleteThe great part is the pre heater, feeds a propane tankless heater, and thats where we get huge savings in costs, have a AC electric tankless too, runs off a 11000 watt Lincoln welder generator, back feeds from the shop back to the house, so no matter what my wife can have hot water, whole thing is off grid, took 9 years to pay itself back, only thing we run off mains power is two meat freezers, costs 30 bucks a month for those, they are on regular 220ac mains grid power, and some shop equipment that are 220ac.
Lot of work, long terms its considerable savings, and when power goes out most time we do not notice it till dark, cause a neighbors street light is out. Long term i think its more practical than a grid feed type system.
I was looking into those things for a spell, it gets a bit breezy on the rooftop.... But you really need to be out in a very large field or near the shore, etc., to make those things worthwhile. If you're not getting a consistent 10+ mph breeze, aka like by the shore, then they really won't even charge a battery. Needs a minimum wind to even 'make electricity'.
ReplyDelete