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Thin Film PV in Europe - Page 5

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Posted by Karl Moser on March 15, 2009, 1:39 pm
 
Conact the following company, I sure they will help you:
SAT SOLAR AG
Lohstampfestr.11
CH-8274 Tägerwilen

Tel.:   +41 716693749
Fax:   +41 716693751


Karl

I've spent the better part of a day searching the web without much
success.

Can anyone help me find suppliers of thin film PV units who are
prepared to sell to the general public.  I'm based in Sweden which
seems to be a solar power desert as far as production is concerned,
notwithstanding all the great work done at the Ångström lab of Uppsala
University.  But I can deal with, say, Germany which looks like a
likely bet if someone can give me an address or a url.

Would be nice to find retail prices on a website so that one could
compare them with the prices of standard non-TF panels.

Thanks in advance for any help.

//James


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Posted by frigitar on March 24, 2009, 1:54 am
 
Hi James,

I gather from your posts that you want to use this system for your
forest house - which is probably disconnected from the grid, yeah?

In this case I would think that Solar PV is your only real option.
Even a diesel generator does not seem like a good choice because your
energy requirements are not high enough to warrant major cost savings.
Plus the maintenance and fuel supply will add to your troubles.

So clearly this is a specialised environment and there is no point
comparing prices with grid electricity!

Now that we know PV is the best for you, I would unfortunately have to
advise you to go in for crystalline Si at the moment for it is tried
and tested and as it turns out, more easily available!

If you can wait for a few days, I can ask my supervisor who works on
thin films. He will know who's into retail TF sales. He returns next
week.

- Frigitar
P.S. These initial pre investment times are the worst with renewable
energies. But stick to your decision and you wont regret it later :)

Posted by Eeyore on March 25, 2009, 12:23 pm
 

frigitar wrote:


No, he's ON-grid and thinks it'll be 'green' to take if off grid, one of
the biggest lies being perpetuated by PV proponents.

What he should really do is ultra-insulate, use energy efficient devices
and hence radically reduce the amount of energy required. Bulk generation
will always be greener overall when this is done.

Graham


Posted by frigitar on March 24, 2009, 2:01 am
 sorry but I had to add this,

I am not sure what you mean by "top up heat" but I am not so sure you
want to be heating up using electric power. I mean dont know how the
heating systems work but if you're looking to add an electric heater,
the calculations change quite a bit. Lighting, ventilation, even a
laptop with internet is no problem!

Posted by James W on March 24, 2009, 5:05 pm
 
Thanks for your inputs, Frigitar

Yes, we've had crystalline PV for about fifteen years in the forest
hut.  But right now, I'm interested in testing it in another
situation, where grid power would be difficult to arrange, namely
mobile hen houses.  For ecological egg production a popular method of
housing the hens is in mobile huts, which move perhaps fifty or a
hundred metres at a time, together with a large fenced in area.  The
huts stay in one place for a period of weeks or months, then are moved
another fifty or a hundred metres to fresh ground, together with the
fencing.  Typically there will be about ten of these compounds in a
site.

They could be fed with cable from the grid, but this is inconvenient
because of the mobility requirement and the fact that they are spread
out over a large area.  It was therefore I thought about installing
solar power, since the main requirements are sufficient lighting to
ensure egg production during the darker months, which I already know
does not require a great deal of light, and ventilation during the
summer months, in the form of a fan.  I know there are energy
efficient forms of both heating and lighting for 12 volt systems.

By top-up heating, what I mean is a source of heat necessary to add to
the heat generated by the hens themselves so that the temperature of
the insulated building does not drop below, say, five degrees.  Now
I'm not sure how much heat the hens generate, nor the U value of the
shed material, which is why I want to do my empirical homework and see
how much extra heat would have to be provided and whether a 12 volt
system would be able to cope with that.  The big question is how many
batteries would be required.  There are not many days in the year here
in my part of the world which are so cold that a well-insulated
building would require a lot of extra heat.  It might well prove that,
say, a calor gas system would do the job better, but since I plan to
have PV for light and ventilation, I thought I would see how much
surplus energy the system produces.

//James

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