Re: SB: Re: undie cookers and Chinese hot water

[Ned Allison <ned-a@home.com>]

Derek:

You could also investigate using the heat of the compost piles to preheat 
water.  Just take care that the pipes are not damaged in the composting 
process.  There are a lot of natural acids involved, and of course the 
turning needed to keep the pile active.  You could also investigate the 
capture of the methane that the pile produces for power and heat 
production.  bio diesel is another potential low tech way to go.

Ned


At 12:53 PM 5/31/01 -0600, you wrote:
>Having lived in several places where hot water was a rare thing, I assert 
>that the difference between even luke warm water and cold water is 
>dramatic, when you are splashing the water on intimate parts of your body 
>(such as your skin).  Therefore, a so-so solar pre-heater would have 
>substantial value.  A solar water heater could generate 40 degrees C (~104 
>F) would be a major boost to hygiene and comfort.
>
>I am sure that there is tremendous variation in the water systems in 
>China.  We might want to target one that is common to the area where Yak 
>Woman is working.  Something as simple as snaking tubing for the hot water 
>supply under the tile roof might do wonders.  But freezing could be a 
>problem.  So we need to know more about the houses, climate and water 
>delivery systems that we are designing for.
>
>Derek Roff
>Language Learning Center, Ortega Hall Rm 129, University of New Mexico
>Albuquerque, NM 87131  505/277-7368 fax 505/277-3885
>Internet: derek@unm.edu


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