small diesel generator [RE-wrenches]

[Tom Lane, Energy Conservation Services]

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If you want to learn about DC generators --take 5 minutes to go to
Fischer.com    --then look under marine -commercial and military categories
for DC GENERATORS  gator tom
----- Original Message ----- 
From: "Ray Walters" <ray at solarray.com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, June 22, 2004 2:17 PM
Subject: Re: small diesel generator [RE-wrenches]




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Hi All;
I agree with Jay, reliability is #1. As far as efficiency goes, it depends
on the charger. I have a Manzanita Micro Power factor corrected charger
that has efficiency over 95%. With a Yamaha 1000 watt invertergenerator (at
7000 ft altitude) we were putting out 900 watts AC (kill-a-watt meter) and
putting 870 watts DC into the batteries (E-meter) I'm sure with better
metering I could measure some actual losses, but they're still pretty low.
I had a customer with an expensive DC genny Honda motor etc (Twin Rivers?).
He hated it, never did work right. The efficiency is there theoretically,
but it just doesn't pan out in reality. Tom was going on so about DC
generators, could he point us to a reliable unit and back it up with real
world numbers? I'm still interested, especially for cabin systems (DC only)
& EVs.

Ray


>HI Hugh,
>
>I view the generator to be dual purpose: charge the batteries and provide
>backup for the inverter in case if fails.
>
>I currently don't view efficiency to the be the most important issue,
>reliablity is the most important to most applications that I deal with.
>
>I use AC gennys.
>
>jay

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