On Sat, 25 Sep 2004 00:09:29 +0100, Andy Hall
wrote:

On Fri, 24 Sep 2004 23:46:46 +0100,
wrote:



Back to the conservatory, is the aluminium structure a sound place to
dissipate any heat from the fittings? I believe -although they havent
actually said so yet - that this is what the conservatory supplier
may claim.

Brian



I don't think so.

The normal fitting position is in a plasterboard ceiling or similar
with space above and to the sides by some way - at least 150mm, if not
more. Cooling is going to therefore mainly be by air circulation
and convection. Since board is a reasonably good insulator, there
is no assumption of it conducting much heat.


If you consider and aluminium beam extrusion in the ridge, it probably
doesn't have any of those properties - probably much less depth and
much smaller space around the fitting. OK, it's aluminium and a
reasonable conductor, but the fitting will not normally have any
substantial amount of area in contact with it.
Perhaps the surface mount types would be a bit better from the heat
point of view, but 4 x 20W ones are not going to do much for you at
all.

They're more for addittional directional light than anything. They're
certainly not the only lighting in the whole space..

It turns out the lights are apparently supplied by Ultraframe,
specifically for use in their conservatories, of which this is one.
They look to be the same lights you can see at the bottom of this page

http://www.ultraframe-conservatories...sp?l1=4&l2=261

although I need to speak to Ultraframe on Monday to get the details.
Does anyone have details of how to call them direct? The advertised
phone number is an 01200 number, which only connects you to your
nearest local Ultraframe distributor, which happens to be the company
that are fitting the conservatory

Brian