[Greenbuilding] overhead cellulose dense pack?`

Kenton Knowles gl0bal at grapevine.net
Thu Apr 5 11:32:52 CDT 2007


What about the floor of a house on stilts in a mixed climate.
Would you need a ventilated air space in a dense packed floor system?
Kenton Knowles

      global homes design inc.
785.594.4115  fax  785.594.0396
 www.globalhomesdesign.com
----- Original Message ----- 
From: "Ted Inoue" <tedinoue at gmail.com>
To: "Greenbuilder list" <GREENBUILDING at listserv.repp.org>
Sent: Thursday, April 05, 2007 10:39 AM
Subject: Re: [Greenbuilding] overhead cellulose dense pack?`


>
> This is mistaken logic.
> You may get more space per btu, but if you don't need the space, why 
> bother
> wasting the energy to condition it?
> The ultimate goal is to reduce absolute energy usage. To do so, you want 
> the
> smallest, most efficient structure (fridge, house, etc). If a 15 cubic ft.
> fridge serves your needs, use it instead of the 25 cu. ft. model unless 
> the
> total energy used by the 25 is less than that used by the 15, you're 
> better
> off with the 15.
> Basement is the same. If it's not a living space, let it float to ambient
> ground temperature and insulate it off from the rest of the house.
>
> On 4/5/07, Drew A. Gillett, P.E. <deaneg at hotmail.com> wrote:
>>
>> 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
>> >
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