Not so fast with the Heat Generator.
Reinhold Metzler is a serious microhydro expert, (and a nice guy.)
He visited my shop here in Bolivia many years ago to see an early
Watermotor prototype and made some valuable observations. I cannot imagine
that he would have promoted an appropriate technology device that had not
been tested to his satisfaction.
I know from personal experience that an appropriate technology device
when built by another individual can easily have flaws not anticipated by
the designer, or understood by the user.
For an example, the clearance of the rotating parts inside the housing
may well be crucial to efficient operation, and perhaps difficult to
achieve for a one-time Heat Generator builder.
Unlike ordinary products from factory assembly lines, the quality, thus
the reputation of any appropriate technology invention is in the hands of
each individual constructor, not the original inventor.
The basic Heat generator concept seems good to me. I would ask our
resident physics experts about the highest efficiency that could be
reasonably hoped for.
An obvious and valuable use for such a device here in Bolivia would be
to dry crops during rainy season.
Rainy Season is when there is little sun but plenty of small scale
waterpower sources available in the form of small fast-flowing streams. A
steady source of moving hot air would be very useful.
Does anyone know where Reinhold Metzler is? He was working with SKAT
or GTZ. the last I heard.
I tried to get in touch with him a couple of months ago about the Heat
Generator on the behalf of an interested Bolivian businessman.
He needs to dry large quantities of bovine blood during rainy season in
the low-altitude tropical city of Santa Cruz.
Ron Davis, www.watermotor.net
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