Commercial off-grid application? [RE-wrenches]

[Matt Tritt]

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As long as you are getting bioDiesel from a clean source (not re-cycled 
resturant oil) and have a way to prevent gelling (except under your 
feet) in cold weather AND have a good filter/water separator in place, 
it's an excellent choice. You could also do something like 50/50 blend 
if the veggie oil is questionable.

Planning on using hydrogen as an actual fuel source in the near future 
might be slightly optimistic thinking. ;>)

Matt T

Jeff Clearwater wrote:

> Hey David B.,
>
> I think Jay's response  is right on the money in terms of the 
> generator.  You basically need to talk them out of the notion that a 
> gigantic battery bank is any more environmentally responsible than a 
> small one backed up by a seldom run propone or perhaps diesel unit. 
> You might sell them on the propane unit by speaking of the possibility 
> that some day in the not too distant future, local green gas 
> production may be possible in the form of methane or hydrogen. Give 
> them some reason to back away from their position.
>
>
> The other, probably more immediate approach, is to sell them on the 
> vision of "greening the grid" by putting all that money that would 
> have been spent on batteries that eventually land in the land-fill or 
> some Asian backyard recycled by bare-handed kids - into grid tied PV.
>
> I think sometimes our job is more of psychologist than engineer . . . 
> . "you don't want to do that" sometimes is the best sales line.  Or at 
> least one we can sleep with at night.  . . .  It's fun to be an 
> engineer and try to solve the problem - but we must be careful the 
> problem is defined right in the first place.
>
> Is there a way to have biodiesel or vegie oil be a reliable backup? I 
> think Jay may be practically right  on that, but it would be nice if 
> he wasn't - anybody else with experience have a say on that?
>
> So get to work and sell them a very large PV system (or better yet an 
> aggressive conservation program) with all that money and disgust of oil!
>
> Best of luck!
>
> Jeff C.
>
>
>
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>> Hi, David,
>>
>>
>> How long does this system have to back up for?  Minutes, hours, days?
>>
>> If its minutes, then yep a industrial sealed battery ( absolite 2P) 
>> the way to go.
>>
>> If its a few hours same.
>>
>> If you ever need this to run for more than some hours, then you'll 
>> need the genny.  For example, when the power does go out
>> usually its from storms, hence no solar, no battery recharge, and 
>> then you''ll need the genny to power this anyway.
>>
>> I don't recommend bio, straight oil or even diesel for such a standby 
>> by unit.  All of this fuels don't like to sit for months let alone 
>> years.
>> A propane unit with storage tank gives the best backup.  ( even if 
>> you have natural gas, if the power goes out, so can the power for the 
>> gas)
>>
>> On a side note, I understand the dislike of gennys, but in this case, 
>> its actually much more environmentally friendly to go with only a 
>> small battery to run before the genny
>> starts than to go with a huge battery.  Assuming the use of backup is 
>> the normally very rare thing.
>>
>> peace,
>>
>> jay
>>
>> peltz power
>>
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>
>
>

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