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Article #4922

Re: What happens when solar power is cheaper than grid power?

#4922
From: Graham Cooper
Date: Mon, 09 Jul 2012 23:12
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On Jul 10, 8:24 am, BruceS <bruce...@hotmail.com> wrote:
> On Jul 9, 1:39 am, "Clocky" <notg...@happen.com> wrote:
>
>
> > Graham Cooper wrote:
> > > On Jul 9, 11:24 am, "Clocky" <notg...@happen.com> wrote:
> > >> herc.of.z...@gmail.com wrote:
> > >>> On Jul 9, 9:28 am, "Clocky" <notg...@happen.com> wrote:
> > >>>> Yes but when you are trying to cool/heat a room you will soon
> > >>>> realise that the power required to do so using Peltier cooling (not
> > >>>> to mention the costs) will throw your cost effective solar powering
> > >>>> ideas into a festering heap.
>
> > >>>> But you won't listen to reason, so good luck with it. I would like
> > >>>> to see what you come up with though.
>
> > >>> Not a room, a cool room.
>
> > >>> of course a person producing 50W in heat isn't going to compete with
> > >>> a 20W peltier!
>
> > >>> so your INSULATION is inversely propotional to your COOLING POWER
>
> > >>> most people off the grid buy a chest freezer and put a timer or
> > >>> thermostat on it.
>
> > >>> better insulation, and opening the door doesn't lose cool.
>
> > >>> I might adapt some chest freezers with peltier coolers and tank of
> > >>> water inside to keep thermal intertia during noon hours, running off
> > >>> solar panels.
>
> > >>> the shed is scorching in summer during afternoon, i have to get the
> > >>> temperature down or I can't store ANY food!
>
> > >> A Peltier cooler setup that size would still likely use more energy
> > >> than a conventional freezer box which kinda defeats the purpose
> > >> doesn't it? I would insulate the shed walls and ceilings as a matter
> > >> of priority. Add some panelling to make it more homely. Should be
> > >> DIY simple and would make it more homely not to mention liveable.
>
> > > yeh the compressor fridges are more efficient, but peltiers work too
> > > and are solid state so you can leave them on for years and run at
> > > different amps, no maintenance.
>
> > I'd be interested to see what you come up with and see how efficient,
> > reliable and cost effective it is.
>
> > > I wouldn't' be able to use gas if I sealed the shed up.  this will
> > > just be a weekender once I've setup the water tank I can move on..
>
> > It could be a very comfortable weekender for little outlay. Shouldn't be a
> > problem since you're loaded, right?
>
> Graham lives in a shed.  It's bigger (I think) than the storage shed I
> just had built, but not as nice.  Yes, he's clearly "loaded", but he
> would get even more loaded if he sealed up the shed and used gas in
> it.  Better yet, Graham, seal up the shed and just open the gas valve
> a bit, with no flame.  Then you won't have to worry about CO
> poisoning.  Happy dreams!
>
> > > Easier to get a caravan or build a full house for something permanent
> > > than do up a shed.  But water, power, resources, etc. are good to have
> > > on stand by.
>
> > Expecting armageddon?
>
> More like expecting the authorities.
>
> > > I boarded off the gaps between the concrete slab and walls so no
> > > spiders crawl in anymore
>
> > What about the gaps at the top? I found they came in through there and had
> > to seal that. Ended up doing it by hanging a ceiling made from silver cell
> > insulationl. Secured it using metal screws to the centre beam and let it
> > droop slightly and fastened it to the sides with a bit of overlap. Looked
> > quite neat and worked a treat. I ilaid some carpet and nsulated the sides of
> > the shed and put some panels on to make it into a very comfortable
> > workshop/office.
>
> You just can't get much better than a person who pretends to be rich
> having to go extra lengths to keep the spiders out of the shed he
> lives in, and dreaming of the day he can move on up to a caravan.


huh?  I could afford 3 10 room mansions on the Gold Coast next week if
I wasn't on the bad tenants list.

I don't see the point in upgrading unless it's substantial.

I have 3 graphics artists on payroll at the moment.

I'm ordering 10 15W amorphous panels today ($1000) to bring me up to
300W total, although the Mono's barely work in winter due to the low
slope on the shed roof.  And 300AH in batteries ($1400) and not sure
what inverter, might get a $2000 inverter charger computer controlled
system so I know how to expand later.

It's just open plan living, septic loo in the corner, 12V shower on a
mat, spray the place with a huge dose of cochroach surface spray once
a month!

No point getting a $10K caravan now, take me a couple months to save
$50K, may as well get a mortgage.

Herc
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From: Graham Cooper <grahamcooper7@gmail.com>
Newsgroups: sci.skeptic,aus.electronics
Subject: Re: What happens when solar power is cheaper than grid power?
Date: Mon, 9 Jul 2012 16:12:50 -0700 (PDT)
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