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Article #4920

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

#4920
From: Clocky
Date: Mon, 09 Jul 2012 07:39
71 lines
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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?

> 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?

> 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.
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From: "Clocky" <notgonn@happen.com>
Newsgroups: sci.skeptic,aus.electronics
Subject: Re: What happens when solar power is cheaper than grid power?
Date: Mon, 9 Jul 2012 15:39:49 +0800
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