[Greenbuilding] Zeer pots

[Bob Irving]

I did try to 'build' a couple of these during a bad week in the  
summer this year and found myself defeated both by the pots and by  
the weather. Modern pots that you buy in garden centres seem to be  
high-fired to resist frost and consequently don't absorb water well,  
so can't cool by evaporation, I think. Also it would seem as if you  
need a certain amount of heat to drive the process - common enough in  
sub-Saharan Africa, but quite often lacking in the UK, even in  
summer. So the dataloggers I put inside stayed largely at ambient,  
giving me a null return on my experiment...
	Bob


On 22 Nov 2006, at 19:47, Chris Green wrote:

> Kat wrote:
>> http://permaculturetokyo.blogspot.com/2006/11/passive-cooling.html
>>
> Thanks for the link, which lead to the pages linked below.
> Talk about Appropriate Technology.
> In reading about Zeer pots, or 'desert refrigerators,' I feel it
> wouldn't be a great stretch to describe these as one of the 'gold
> standards' in developing appropriate technology.
>
> http://www.rolexawards.com/laureates/laureate-6-bah_abba.html
>
> http://www.scidev.net/features/index.cfm? 
> fuseaction=printarticle&itemid=315&language=1
>
> On Thanksgiving, take a moment to give thanks to Mohammed Bah Abba,  
> who
> refined this technology.
>
> Cheers,
>
> Chris Green.
>
>
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