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GSBN: Digest for 8/27/04

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-> Re: GSBN:Re: strawbale buildings in tropic climate
     by "Martin Oehlmann" martin.oehlmann@...
-> Re: GSBN:Re: strawbale buildings in tropic climate
     by Judyknox42@...


Date: 27 Aug 2004 01:57:08 -0600
From: "Martin Oehlmann" martin.oehlmann@...
Subject: Re: GSBN:Re: strawbale buildings in tropic climate


assuming there are also cold nights in Panama, we might also consider a
small heat pump (wall/floorheating), suitable for cooling.

Greetings from The Hague,

Martin Oehlmann

- ----- Original Message -----
From: "Rene Dalmeijer" rene.dalmeijer@...
To: "GSBN" GSBN@...
Sent: Thursday, August 26, 2004 10:04 AM
Subject: Re: GSBN:Re: strawbale buildings in tropic climate

> Regarding the above discussion I would like to comment on the following
> At 08:16 PM 8/26/04, you wrote:
> >>Passive cooling should not be compromised by using high insulation
> >>SB walls.
> I think it is a misconception to only think that insulation works for
> heating I am sure the writer of the remark which I have lost track of does
> not mean it the way it now comes over.
> Insulation is just as important for cooling maybe even more so when
> is required. If you want to go passive which I think you should strive to
> do so in as many cases as possible it is still a good idea to use a
> combination of mass and insulation. I do agree that the Panamese climate
> zone is most probably one of the most difficult due to the almost constant
> hot ambient night and day air temperatures. Although that said night
> temperatures will always be lower the daytime. Besides there is a marked
> difference between surfaces in direct sunlight and those in the shade,
> insulation will help preventing this heat making its way in.
> I am not sure what the specific local climate circumstances are. A low
> little insulation well ventilated strategy will be the most appropriate if
> regular wind is available specifically in the evening. The low mass little
> insulation approach uses the least amount of resources and is the simplest
> to implement. If there is little wind and relatively larger night daytime
> ambient air temperature swings then the insulated mass approach works
> To enable extra cooling wind towers and swamp coolers will increase
> comfort. Specifically in the case of these relatively feeble 'cooling'
> mechanisms the insulated mass approach will maximize their effect.
> The above 2 approaches off course are born out by long existing
> practice all over the world. Again it all depends on local circumstances
> including site location, available building materials and climate. The
> test case is to find out what is local best practice this will in most
> cases be the best indicator.
> Rene

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Date: 27 Aug 2004 17:25:04 -0600
From: Judyknox42@...
Subject: Re: GSBN:Re: strawbale buildings in tropic climate

Judy Knox here, just adding one more comment about cooling towers.  They work
beautifully in dry, hot climates....but it seems they would lose their
effectiveness in humid climates.

Judy Knox and Matts Myhrman
Out On Bale
1037 E. Linden St.
Tucson, Az  85719

Each of us can and must champion the evolutionary breakthroughs necessary to
sustain all life.  The journey of a champion is difficult, AND our access to a
joyful life.
Judy Knox

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