Appropriate Technology

[Mitra Ardron <mitra_lists AT mitra.biz>]

Watch the video, estimate the cost and do the math - I can't believe 
this is going to produce a useful and AFFORDABLE solution, even in the 
driest conditions.

- Mitra


On 12/11/11 12:36 PM, Lawrence London wrote:
> Lawrence London
> lfljvenaura AT gmail.com
>
> On Fri, Nov 11, 2011 at 3:40 PM,<yelenickj AT riseup.net>  wrote:
> > cool... any scalar ideas from y'all ?
> >
> >
> > http://e360.yale.edu/digest/irrigation_device_pulls_water_from_the_air_in_driest_conditions/3206/
> You may have heard of the low tech systems used in the deserts of the
> Middle East to refrigerate food,
> even make ice. Containers are placed on the shady side of hills,
> dunes, berms - contents get cold overnight
> - need to Google this for more exact details
>
> Scaled systems seem appropriate for a site with installed or
> to-be-installed systems that are integrated and diverse,
> i.e. locate food producing gardens there not in an isolated location
> So, how about building, on such a site and stacking functions, berms
> that have water condensing coils and storage tanks
> buried in them high on their slopes so to provide gravity fed
> irrigation to the gardens below. Positioning the collector or wind
> turbine powering the air pump at a higher elevation might result in
> increased airflow and unobstructed sunlight and locating the
> condensing unit underground on the shady side of the berm would reduce
> the amount of coil needed.
> You are talking about a single large condensation and storage system
> powered by a sized array of wind or air collectors and
> air pumps. This system would be sized to the amount of garden space to
> be irrigated.
>
> Someone in another forum (YouTube comments) suggested using thin film
> photovoltaic material attached to the blades of a
> short wide wind turbine rotor to  power the unit. Of course,
> biointensive, mulch-OM-humus-intensive gardening will provide greater
> soil water holding capacity, tilth and permeability allowing greater
> water infiltration and underground dispersion.
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Mitra Ardron

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