Alternative Power sources - Re: hot shower from generator heat

Author

Re: hot shower from generator heat

Bruce in Alaska

2006-12-09, 1:25 pm

In article <i3fjn21s8i5bid1u33hu9l15gq4s36gvu9@4ax.com>,
Loren Amelang <loren@pacific.net> wrote:

>
> Loren

Loren, The "Rule of Thumb" for CoGeneration in Small Water Cooled
Diesel Generators is:

1/3 of the BTU's goes out the Wires
1/3 of the BTU's goes out the Radiator
1/3 of the BTU's goes up the Stack

95% of the BTU's out the wires is recoverable
75% of the BTU's in Radiator is recoverable
50% of the BTU's from the Stack are recoverable

You need a very efficent Heat Exchanger to get the 75%
out of the Cooling System.

To get the 50% recovery from the Stack, you need BOTH, a good
Jacketed Exhaust Manifold, and a good External Jacketed Exhaust
Stack Section.

Bruce in alaska
--
add a <2> before @

Loren Amelang

2006-12-13, 8:25 pm

On 12 Dec 2006 20:17:20 -0800, grumtac@sbcglobal.net wrote:

>Dont forget the units used on Class 8 trucks.... These are frame mount
>units designed to 1) keep the engine coolant warm in the winter, 2)
>provide Air conditioning, and 3) be a generator when the main engine is
>shut down.
>
>I have a hunch that these would be less money than anything connected
>to the yacht market, and maybe more available as used. Calling a truck
>salvage yard could reveal interesting info. There are a few companies
>who make them:
>
>http://www.kool-gen.com/ is just one of them.

I had just discovered the truck APU market this week. Checked out a
few, but there is a major flaw for my purposes. According to the
sales people I contacted, all over-the-road trucks are 12 V systems,
and my original goal (I have to keep reminding myself) was a way to
charge my 24 V battery bank efficiently.

I know I've seen 24 V trucks, but I guess they were off-road
industrial behemoths. Which probably don't include sleepers and
alternative power. Too bad, as the other APU capabilities seem perfect
for a remote home.

Loren

sylvan butler

2006-12-18, 5:25 pm

On Wed, 13 Dec 2006 17:43:32 -0800, Loren Amelang <loren@pacific.net> wrote:
> few, but there is a major flaw for my purposes. According to the
> sales people I contacted, all over-the-road trucks are 12 V systems,
> and my original goal (I have to keep reminding myself) was a way to
> charge my 24 V battery bank efficiently.
>
> I know I've seen 24 V trucks, but I guess they were off-road
> industrial behemoths. Which probably don't include sleepers and
> alternative power. Too bad, as the other APU capabilities seem perfect
> for a remote home.

Hmm. Don't know about the APU, but my neighbor drives a over-the-road
truck that has a 24v system. I guess it could be just the starter...

sdb

--
Wanted: Omnibook 800 & accessories, cheap, working or not
sdbuse1 on mailhost bigfoot.com

You

2006-12-19, 1:25 pm

In article <slrneoe1mc.kni.ZsdbUse1+noZs_0612@sdba64.internal>,
sylvan butler <ZsdbUse1+noZs_0612@Zbigfoot.Zcom.invalid> wrote:

> On Wed, 13 Dec 2006 17:43:32 -0800, Loren Amelang <loren@pacific.net> wrote:
>
> Hmm. Don't know about the APU, but my neighbor drives a over-the-road
> truck that has a 24v system. I guess it could be just the starter...
>
> sdb

Not very many 600Hp diesel engines will spin on 12Vdc.....

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