One of the challenges with solar and wind energy and some other
alternative energies is that we don't have access to them all the time. For
instance, hydro-electric electricity in some places may not be available in the
summer months, rather more readily available with the run-off of spring when
the ice melts in the mountains or during the rainy seasons when the water cycle
is doing its main business.
For solar, it's a similar issue, as "The Sun notoriously doesn't
shine at night," and although that sounds hilarious and obvious, I heard
that quote from a Nobel Lariat giving a speech on solar pump
at a local
university in 2011. Wind power is similar in this regard because when the wind
is not blowing you cannot collect energy. If the wind blows more steadily at
night, but humans need the draw down in energy during the day, then we have a
problem don't we?
The answer of course is to find a way to store the energy created and then
use it at a later date. Some ideas have been to pump pressure underground in
giant tanks, which would take the energy being created at the time, and that
pressure would blow out during the day turning an energy generation device. That
could work.
There was an article in Discover Magazine in September of 2012 titled;
"Tornado Tech - Excess Heat from Power Plants or Seawater Could be Twisted
into a Renewable Energy Source," which brings up a very interesting topic
of vortex flows and efficiency of heat engines, propulsion and energy
generation.
Such a scheme obviously makes sense, but what will the next step be in
energy storage? Remember every time we collect energy from one place and
convert it into electricity for something else we lose a little bit of energy,
we never get 100% efficiency. In the case of wind power and then creating
pressure, we lose a little bit of energy in the pumps which pump up the
pressure, and we lose a little bit of energy from the friction of the device which
turns to generate electricity. Not to mention the energy loss from the friction
of the blades turning, and the system itself.
We also lose energy in transmission lines. The trick is to prevent
inefficiency. And as long as were talking about inefficiency, then we need to
be honest with ourselves that when we convert sunlight from solar cells and
energy, they aren't very efficient, in the future they may be, but right now
they are not. We need to work on efficiency, energy storage, and we need to use
the laws of physics without trying to be so politically correct that we fail in
these large projects.
It does no good to set up a very large energy generation system, give out
all sorts of tax credits to help it compete in the free market, when it isn't
as efficient as what we already have producing our green energy storage
. That just wouldn't
be smart business, nor does it stick with the conservation of energy or laws of
physics in this domain. Please consider all this and think on it.
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