Re: GBlist: overheating a solarium

["John Salmen" <terrain3@home.com>]

Hi Stephen

are you intending the material to be 'in the furnace' or is the area simply
being used to supply the heat.

most solar kilns designed for wood are intended to produce an end result
with a wide variety of fluctuation during the drying period). This
fluctuation (especially night-time cooling) actually benefits the end
product allowing moisture to equalize. I'm not sure you can use a simple
solarium to generate a consistent enough affect.

My first thought is that you need to design an insulated oven enclosure to
the smallest dimensions you need for just the windows themselves and supply
the heat to that enclousure. This would give you the greatest control and
you can use any form of collector to provide that heat probably more
efficiently. An insulated box for the window units with a solarwall cladding
might be more efficient than glazing. Because you don't really need airflow
just uniform heat I would be tempted to use liquid which I think would give
you more control with fewer gadgets.




----- Original Message -----
From: "Stephen Thwaites" <stephen@thermotechwindows.com>
Cc: <greenbuilding@crest.org>
Sent: Friday, December 15, 2000 9:51 AM
Subject: Re: GBlist: overheating a solarium


>
> - an usual request -
> - opinions on how to overheat a solarium -
>
> We are contemplating building a solarium on the SW side our shop to use
> as a 'furnace' to accelerate the hardening of custom painted window
> lineals.
>
> i am looking for advice on what roof and wall arrangement for a 1.6 m
> (5') wide and 25m (75')long room that you think would lead to the
> GREATEST amount of overheating.
>
> We need to get our material up to 140F to for 2 hrs (lower temps mean
> longer dwell times) to achieve 30 day room temperature strength. We
> would have no more than 1 batch per day. Typically 2-3 batches per week.
> This requirement is year round.  Week long 'cloud snaps' - common here
> in Nov and Dec -  mean that we will have a heavily insulated, fossil
> fuel fired after chamber as a back-up.
>
> Some options:
>
> 1. shallow (4/12 ?) pitch glazed roof and glazed vertical wall
>
> 2. insulated roof and steep (72/12 ?) pitch wall
>
> 3. shallow (4/12 ?) pitch glazed roof and insulated walls
>
> 4. insulated roof and glazed vertical wall
>
> Any comments?
> Do you think we can hit 140F?
>
>
> Stephen Thwaites
> Thermotech Windows Ltd.
> Ottawa Ontario
>
>
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