[Stoves] In search for a stove model for the disaster inthe Philippines

[nari phaltan]

A very simple way to sterlize water has been developed by us.
www.nariphaltan.org/watersterlization.pdf

Cheers.


On Tue, Nov 12, 2013 at 6:03 AM, Robert Taylor <rt at ms1.hinet.net> wrote:

>  A niggling point: SODIS is NOT pasteurization. As far as I understand,
> it works largely by ultraviolet irradiation, along with a degree of
> temperature elevation well short of pasteurization temperatures. According
> to information (promoting pasteurization) that I have read online, it is
> less effective than pasteurization, which can also be achieved without fuel
> by using solar heating. However, SODIS is clearly far better than nothing,
> and it can be implemented straight away by the direct use of easily
> available equipment (plastic bottles and a bit of cloth).
>
> Robert Taylor
>
>
>
> There's also the SODIS method for pasteurizing drinking water. If you have
> 6 hours of sunlight, you can use a simple fabric filter to get water clear
> enough and use a plastic bottle and some reflective metal to pasteurize it:
> http://www.sodis.ch/methode/anwendung/index_EN
>
>
>
> Keep in mind that the pasteurization temperature of water is lower than
> the boiling temperature. If the initial water is clean enough, a lot of
> fuel can be saved just by bringing it up to the right temperature.  Here's
> a link to a chart for the temps at which most common pathogens can be
> killed:
>
> http://solarcooking.wikia.com/wiki/Water_pasteurization
>
>
>
> Kind regards,
>
> Erin Rasmussen
>
> Stoves Discussion List
>
> erin at trmiles.com
>
>
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-- 
Nimbkar Agricultural Research Institute (NARI)
Tambmal, Phaltan-Lonand Road
P.O.Box 44
Phaltan-415523, Maharashtra, India
Ph:91-2166-222396/220945/222842
e-mail:nariphaltan at gmail.com
           nariphaltan at nariphaltan.org

http://www.nariphaltan.org
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