Photovoltaics: manufacture its solar panel!

Forum solar photovoltaic PV and solar electricity generation from direct radiation solar energy.
Obelix
I posted 500 messages!
I posted 500 messages!
posts: 535
Registration: 10/11/04, 09:22
Location: Toulon

Photovoltaics: manufacture its solar panel!




by Obelix » 19/06/06, 09:11

Hello everybody

That's it I start .... !!
Well we will not reinvent the wheel, but tinker a panel from a few watts real cheap !!

Expected power => 5Watts
Dimensions: 20cm x 28cm

Necessary material :
Supply on EBAY France (available for everyone !!)
A solar garden lamp => around 15 Euros including shipping
A minimum 200mmx280mm fresnel lens => around 10 euros including postage.

Assembly:
The garden lights have solar cells 0.34W about 50mmx60mm.
thus recovering this mini panel which will be the center of our system.
We glue (spray) this sign on a piece of aluminum that will ensure a favorable cooling efficiency cells ...
We put everything into an old cardboard shoes flat ...
Is placed on the cardboard the fresnel lens, adjusting the height of way that maximum lumieàe enters the solar cell module ....

Cell Output son are connected to a battery or a lamp and that's it ...

For mathematicians:
50mmx60mm solar cell => surface 0.003 M²
"Standardized" solar power => 1000W x 0.003 m² = 3Watts recoverable.
Cell efficiency => 10% => 0.3 Watts
this for the garden lamp ...!
280mmx200mm fresnel lens => surface 0.056 M²
'Normalized' solar power => 1000W x 0.056 m² => 56 Watts recoverable.
Cell efficiency => 10% => 5.6 Watts

one obtains around 5 Watts used !!
All this for about 30 euros in material and a lot of passion !!
We can do better: to group together to buy the parts, and the price falls rapidly (eg garden lights 10 60 euros including shipping)
Collect coins as you choose ....
The life of these parts is quite long. The fresnel lens is one that is shorter about 5 years. cells last for more than ten years at full capacity which subsequently fall but their lifespan is more than twenty years !!!

There are more than !!!
Y we have to ....

good DIY
Obelix
0 x
Christophe
Moderator
Moderator
posts: 79119
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973

Re: Design a Photovoltaic Solar Panel!




by Christophe » 19/06/06, 09:31

Obelix wrote:Supply on EBAY France (available for everyone !!)
A solar garden lamp => around 15 Euros including shipping
A minimum 200mmx280mm fresnel lens => around 10 euros including postage


Arrested! These lamps are available for € 10 15 to by 3 or 4 in all good DIY store. Obviously this is the 200% Chinese at this price (just like on Ebayz ... z is not a typing error : Cheesy: )

Obelix wrote:For mathematicians:
50mmx60mm solar cell => surface 0.003 M²
"Standardized" solar power => 1000W x 0.003 m² = 3Watts recoverable
Cell efficiency => 10% => 0.3 Watts
this for the garden lamp ...!
280mmx200mm fresnel lens => surface 0.056 M²
'Normalized' solar power => 1000W x 0.056 m² => 56 Watts recoverable
Cell efficiency => 10% => 5.6 Watts

one obtains around 5 Watts used !!
All this for about 30 euros of equipment and a lot of passion !!


They ca is the theory but I'm not sure (I actually have no idea) by focusing the light on a solar panel that it has the power equivalent to the concentration front surface (especially considering the quality cells of said lamps I got a hands yesterday ...) ... If that was the case pkoi manufacturers do not offer this (see the blow of m2 cells ...)? I think it might pose the problem of too high light intensity and temperature ... some of the solar specialists in the room?

Have you already made such an arrangement and got the W 5 expected?
0 x
Christophe
Moderator
Moderator
posts: 79119
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 19/06/06, 10:02

ps: there are a few times we talked about the reversible effect of LED, LED apparment subjected to light create a current (I have not had the opportunity to check).

Maybe a nice double application for LED bulbs with some electronic modifications?
0 x
Obelix
I posted 500 messages!
I posted 500 messages!
posts: 535
Registration: 10/11/04, 09:22
Location: Toulon




by Obelix » 19/06/06, 10:04

Hi-thee-thee oh great econologue !!

Of course I have verified, rechecked and measured !!
Personally I get 4.980 Watts under standard conditions ....
illumination in the measuring luxmeter and current measurement tensions voltmeter.

Of course for strong elairements ca heaters slightly. Hence the well-plate the cell utility on an aluminum base for radiator !!

In terms of appros, everyone is free to choose. This is what I stated in my previous post.
Prices shown are for those who appros not want to break the core, it is a max has normally spend.

If you want to see a PRO realization of the thing is a phone with google "SUNCUBE" ...... panels 300W / M² .....

Although you and has continued this great site ....

Obelix
0 x
Christophe
Moderator
Moderator
posts: 79119
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 19/06/06, 10:10

Immediately big words :P One must not ! : Shock:

Ok great for verif ca amazes me (and ca also saddens me that ca be known no more!) ... It told you we create together a kind of tutorial which explains the matter more precisely and practically?

And what do you think of the "reverse" use of LEDs?

Yes we will try to continue this site but you are all actors also via this forum :)
Last edited by Christophe the 19 / 06 / 06, 10: 11, 1 edited once.
0 x
Obelix
I posted 500 messages!
I posted 500 messages!
posts: 535
Registration: 10/11/04, 09:22
Location: Toulon




by Obelix » 19/06/06, 10:11

PS I, too,

For LEDs, the performance is always in the same category: between 10 20% and%.
As the "active" area is very low (approximately 0.5mm 0.5mm x) so do not expect a readily usable recuperable power. (Of the order of a few milliwatts)

But the principle It Works well, I testing and calculations are Coherent with the sad reality.

In terms of making a tutorial, no problems on my side.
Especially since in six months is the freewheel (finally)
(((PRO: www.ifremer.fr then Equipment => electronic ing)))

Obelix
Last edited by Obelix the 19 / 06 / 06, 10: 24, 1 edited once.
0 x
Christophe
Moderator
Moderator
posts: 79119
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 19/06/06, 10:13

Obelix wrote:For LEDs, the performance is always in the same category: between 10 20% and%.
As the "active" area is very low (approximately 0.5mm 0.5mm x) so do not expect a puisaance recuperable easily usable. (Of the order of a few milliwatts)


Ok but I guess you can mount the light intensity of the lighting LED way more important right? Furthermore their life (and heat sensitivity) must be higher than that of cells not crystal clear?
0 x
Obelix
I posted 500 messages!
I posted 500 messages!
posts: 535
Registration: 10/11/04, 09:22
Location: Toulon




by Obelix » 19/06/06, 10:38

Ok but I guess you can mount the light intensity of the lighting LED way more important right? Furthermore their life (and heat sensitivity) must be higher than that of cells not crystal clear?


NO Ben and I explain:
Silicon is still the silicon and thus the maximum temperature is always 125 ° C. over as the heat exchange surface is very low, the heat transfer resistance is elevated.
Hence problems of heat dissipation.
Tests on LEDs cms allowed me high concentrations but with smoking shell of the diode for the optical settings ......

As against the LED diodes are excellent when we want to detect a light or illumination.
Application: detection of the position of the sun, solar tracker, etc ...

Obelix
0 x
User avatar
gegyx
Econologue expert
Econologue expert
posts: 6930
Registration: 21/01/05, 11:59
x 2870




by gegyx » 19/06/06, 12:06

Hi, interesting initiative.
I had seen these garden lights in the 10 7 euros ... It's fragile.
----
The important element is still the lens.
Fresnel lenses on Ebay is 180 260 x
There are others in 45 € with 30% more brightness?

They tolerate the sun? Because they are flexible. In addition they are restricted by their edges on the support. Should the tender son or metal rods, the width of the plate, so they will not collapse?
---
2 links on the subject:
http://www.jp-petit.com/ENERGIES_DOUCES ... resnel.htm

http://www.jp-petit.com/ENERGIES_DOUCES ... irling.htm
0 x
aidiv
I understand econologic
I understand econologic
posts: 103
Registration: 20/12/04, 18:57




by aidiv » 19/06/06, 12:09

hello, I tested with a diode 10mm who had my bicycle rear red light, it allows for 1,5 volt but I do not know the milliamperes, Deplus is a tension just empty taken by the voltmeter Mechanical a needle (for the purists), if I had thought the solar panel. My idea was to put them in the shade and cool and led the solar radius with mirror (for against what is worse if cloudy)

A general rule is that a panel 10% do so if I 1m² presentation 1000w; I could only have 100w elec,

unless the aid of a Fresnel mirror or I double the catchment area (in my idea it was used in the morning and evening in mid season and was left all winter) as overclocking be cooled panel.

the only thing that can limited is the connection sizes among the cells, how many amps can be done before?
0 x

 


  • Similar topics
    Replies
    views
    Last message

Back to "Renewable energy: solar electricity"

Who is online ?

Users browsing this forum : No registered users and 198 guests