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[MartinP]

My garage is at the end of the garden, built on a 8" concrete base with single concrete block walls and a 3" foam insulated steel panel roof.

The exterior walls have been rendered, Tyroleened & painted, the 7"  joist space has been filled with rockwool insulation & plasterboarded.

 75% of the walls have been clad in plaster board with 2" of rockwool insulation behind.

can you guess what the problem is???











it can get blinking cold in there  :-/ :-/

Nice and sunny outside, 5 degrees inside.


ran a couple of oil heaters for a while, then found a solution on youtube.


I built a solar heating panel from beer cans.  

http://[IMG]http://i3.photobucket.com/albums/y99/issunaz/Spaceheater02.jpg[/IMG]

[Kevin Wood]

Owzat work then?  

Kevin

[MartinP]

Owzat work then?  

Kevin

Get missus to drink Stella, ( not hard in my case)
Collect aluminium beer cans
use a drill & holesaw to cut a 30mm hole in the bottom of the cans.
Cut tops off cans with kitchen can opener
Silicone cans together to make an aluminium tube
Build wooden box & insulate with rockwool.
Lay tubes in box, join top ends with drain downpipe.
Silicone tubes together to strengthen panel.
Spray matt black & weatherproof with perspex.
Drill 1" hole in wood frame in line with the bottom of the tubes


Cold air enters the tubes at the bottom, solar "rays" (UV(not sunlight)) warm the air.

warm air rises, drawing more air into the bottom of the tubes, which rises drawing more air into the tubes, which rises yada, yada...

I have got a thermostatic switch kit from Maplin to connect to a pc fan which will be mounted  at the outlet tube to switch the fan on to draw air through.

This will be run off a 12V leisure battery whhich will have a solar panel connected to it.

[Kevin Wood]

Ahh, so it directly heats air?

Let us know how it works.

[Vamps]

Interesting!!!

I just use one or more of a range of heaters, gas, parafin or electric Dont do much in the garage in the winter though.

[the-toy-maker]

I like the look of this! keep us up to date with how it goes!

i take it your gunna mount it on the roof? then duct the hot air in to the garage?

[MartinP]

I like the look of this! keep us up to date with how it goes!

i take it your gunna mount it on the roof? then duct the hot air in to the garage?

It is proven technology.



It will be roof mounted

It is like a hairdrier, I have been heating the garden up for a couple of months.

http://www.youtube.com/watch?v=OqxQFWaKN2Y&feature=related

[Vamps]

Certainly food for thought...

[BigAl]

Owzat work then?  

Kevin

Get missus to drink Stella, ( not hard in my case)
Collect aluminium beer cans
use a drill & holesaw to cut a 30mm hole in the bottom of the cans.
Cut tops off cans with kitchen can opener
Silicone cans together to make an aluminium tube
Build wooden box & insulate with rockwool.
Lay tubes in box, join top ends with drain downpipe.
Silicone tubes together to strengthen panel.
Spray matt black & weatherproof with perspex.
Drill 1" hole in wood frame in line with the bottom of the tubes


Cold air enters the tubes at the bottom, solar "rays" (UV(not sunlight)) warm the air.

warm air rises, drawing more air into the bottom of the tubes, which rises drawing more air into the tubes, which rises yada, yada...

I have got a thermostatic switch kit from Maplin to connect to a pc fan which will be mounted  at the outlet tube to switch the fan on to draw air through.

This will be run off a 12V leisure battery whhich will have a solar panel connected to it.

my understanding of how this works... on a really warm day you get a cold draft as the cold air is getting sucked into this device ?
i assume i'm missing some steps ?

[Vamps]

Owzat work then?  

Kevin

Get missus to drink Stella, ( not hard in my case)
Collect aluminium beer cans
use a drill & holesaw to cut a 30mm hole in the bottom of the cans.
Cut tops off cans with kitchen can opener
Silicone cans together to make an aluminium tube
Build wooden box & insulate with rockwool.
Lay tubes in box, join top ends with drain downpipe.
Silicone tubes together to strengthen panel.
Spray matt black & weatherproof with perspex.
Drill 1" hole in wood frame in line with the bottom of the tubes


Cold air enters the tubes at the bottom, solar "rays" (UV(not sunlight)) warm the air.

warm air rises, drawing more air into the bottom of the tubes, which rises drawing more air into the tubes, which rises yada, yada...

I have got a thermostatic switch kit from Maplin to connect to a pc fan which will be mounted  at the outlet tube to switch the fan on to draw air through.

This will be run off a 12V leisure battery whhich will have a solar panel connected to it.

so... on a really warm day you get a cold draft as the cold air is getting sucked into this device ?

But would still come out warmer than it went in regardless of the ambient temp

[MartinP]

As the warm air rises through the tube it draws more air in behind it.


the idea is to put a temperature sensor in the outlet tube so that at any temperature above 10 deg it will switch the pc fan on, this will assist the air throughput ( it will decrease the max temp achievable).

I will get a cheap thermometer and take a couple of pics.