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Solar water-heating
uníts auch as this
can heat water
lo
158• F. In only one
hour of sunshine.
The sun consistently shines down upon the
earth with strength enough to supply the
world's total energy needs more than 30,000
times over. Using roof-mounted collection
systems and units ·for heat storage for night
and cloudy day use, solar heating systems
would be operated with thermostats and
circulating fans, much as with conventional
heating units. An obvious advantage of solar
heating is that once the system is installed
there are no further charges for fuel.
Top: London Daily Telegraph
Center: Diagram by Ron Lepeska
Bottom: Mike Hendrickson - Plain Truth
Government experts have estimated that
there is enough wind in the American west–
ern plains, for example, to supply fully half
the electrical power of the entire United
States. The challenge, viewed as readily
achievable, is to design a wind generating
system - actually an updating of the t ime–
honored windmill - efficient enough to cap–
ture maximum available energy at costs
which are comparable to those of presently
used energy forms.
Mike Hendrickson - P/ain Truth
21