You are not thinking of mounting a wind turbine on your Sprinter, are you?? My assumption was that you have some land or a semi-permanent spot where you put up the turbine feeding your van power but not mounted on your van.The other issue that I’ve failed to appreciate is the potential for vibration. Found one that has a fairly robust damper plate, but who really knows until you try it. Noise estimates seem to be 40db, I’ll have to check and see what that is equivalent to.
What is also hard to tease out is how well these things are made. Review numbers are low and there are not many to judge from.
From a cost standpoint, all else being equal, if I could generate 50W that should pay for itself in a year.
Yeah, I’ve given this a lot of though and reading time. The people at Missouri Wind advise against the investment saying the return will be disappointing unless you can get the turbine high up (50-60’). Most of these horizontal turbines have a start up speed of around 70mph which will generate about 30W. They don’t reach full potential until about 20-30mph, and even then many of the makers overestimate output.I was thinking the same, mounted on van while driving...low profile scroll cage style? Not meant to create a perpetual motion debate...just thinking while driving or stationary (and no sun, no alternator charging), the wind generator can charge the house battery if it has decent output. I planed to have 2x 180W solar panels, so on paper a 400W wind gen would be nice.
I say on paper, because I actually planned to use an aux 600W inverter to top up the house battery while driving if necessary. Youtube has some 400W wind gen reviews and it appears to to never achieved such output...boating wind gens appear to be very common, but not ideal for moving van unless you are parked and setup a pole.
Wind gen should be similar to solar in terms of variable output voltage and current, I imagine one could feed both solar and wind output into the same MPPT charger to the house battery. MPPT would regulate its output voltage to say 12V.Correction: it’s the ‘vertical turbine that has a start up speed of around 7mph.’
Yeah totally a paper exercise, no offense taken at all...in practice I opt for a small 600W aux inverter while vehicle is running as backup to solar, which is still inefficient but less hassle running small AC wires to the house inverter/battery bank, and using common low-cost components rather than installing aux alternator with specialized DC-DC charger with long thick 12V cables. For the odd times I need it, I'm ok with the tradeoff.Wouldn't it be simpler to just get the energy directly from the alternator or if you are ambitious a second alternator? The source of any energy generated is the diesel you are burning. I'd be surprised if the efficiency of a wind turbine mounted on a van as expressed as energy out versus extra fuel burned is better than 5-10%. Hybrid vehicles retrieve extra efficiency from the car's kinetic energy because the extra resistance can be turned off during times when slow down is not desired. Even if you could selectively let a wind turbine free spin when you don't want resistance, the blades and the structure that holds the turbine will have significant effect on MPG. It sounds like a fun project for a tinkerer to play with but from an efficient energy generation point of view it's whack-a-doodle (no offense).
Tiny nit-pick ... Solar tends to be within a very narrow voltage range (close to one half volt per cell and then a bit higher).Wind gen should be similar to solar in terms of variable output voltage and current, ...
p.s. if you're planning on using it while in motion (driving), the wind system will knock an mpg or 3 off your mileage numbers.
A 2nd alternator would be a far more efficient producer (in many ways).