[Greenbuilding] overhead cellulose dense pack?`

[John Salmen]

I disagree about including basements within envelopes. I know we are
supposed to look at everything with the envelope as conditioned space but I
think the logic is flawed. We need to look at rapid recovery within an area
that is occupied as it is occupied, essentially radiant heating that moves
with you.

This used to be lighting a fire in a room before you moved into it - now it
is programmable thermostats and zoned spaces. We are not a jug of milk in
the fridge needing to be maintained at a certain temp. 

Primarily we move between spaces with big lag times that are relatively
predictable. We also benefit from a variety of temperature experiences - but
even if we don't want to have that pleasure we can design spaces that are
primarily radiant heating us and not the objects, so can carry us in our
travels within a predictable comfort zone.

If we worked with this kind of criteria heating systems would be downsized
and more efficient. Materials would improve such as wax impregnated gypsum
board or better.

I could go on but it would start to be a rant.

JOHN SALMEN ENVIRONMENTAL DESIGN
4465 UPHILL RD,. DUNCAN, B.C.  CANADA, V9L 6M7
PH 250 748 7672 FAX 250 748 7612 CELL 250 246 8541
terrain at shaw.ca


-----Original Message-----
From: greenbuilding-bounces at listserv.repp.org
[mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Drew A.
Gillett, P.E.
Sent: April 5, 2007 9:18 AM
To: Corwyn; Reuben Deumling
Cc: Greenbuilder list
Subject: Re: [Greenbuilding] overhead cellulose dense pack?`

yes you are,

both this and corwyns previous post illustrate the problem.

on the frig you get over 3 times the volume useful space for only twice the 
heat loss. this is the main reason why smaller frigs are less efficient per 
cubic foot and more costly to buy per cu ft.



 same story on the basement ceiling.  if you don't need the space, make the 
whole house smaller, but keep the basement in the insulating envelope.

----- Original Message ----- 
From: "Corwyn" <corwyn at midcoast.com>
To: "Reuben Deumling" <9watts at gmail.com>
Cc: "Drew A. Gillett, P.E." <deaneg at hotmail.com>; "Greenbuilder list" 
<GREENBUILDING at listserv.repp.org>
Sent: Wednesday, April 04, 2007 9:21 PM
Subject: Re: [Greenbuilding] overhead cellulose dense pack?`


>
> On Apr 04, 2007, at 16:39, Reuben Deumling wrote:
>>  Or am I missing something?
>
> Not that I can see.  Insulating the basement ceiling is better than 
> insulating the basement walls and slab (even if you could get the same 
> insulation levels at the same price and embodied energy).  If you aren't 
> using the space, move it outside the heating envelope.
>
> In my experience, basement ceilings are the single biggest heat loss 
> location in reasonable homes.
>
> Thank You Kindly,
>
> Corwyn
>
> -- 
> Corwyn
> Kermit didn't know the half of it...
> http://www.greenfret.com/
> corwyn at greenfret.com
>
> 


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