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Power Heating Systems |
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By
Rudy Nielsen |
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Solar Power Heating Panels |
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Solar power has been used since the
beginning of time for heating purposes.
If you wanted to get warm, you could
stand in the sunshine. If you wanted to
heat your house, you could open the
curtains. It’s really only been in the
last 30-40 years
that we have begun to take a look at
using the heat of the sun to replace
expensive fossil fuels which run noisy
generators to keep your entire house
warm. I’m a firm believer in using the
limitless natural power of the world
like solar and wind energy to replace
the old fossil fuel system. I believe
that solar collectors will only become
more efficient as the years progress. |
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Let’s take a closer look at solar power
to warm your house and to provide warm
water.
One way you can use solar power is to
incorporate passive solar energy into
the design of your cottage or home |
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Some passive solar energy methods include to
locating windows in the upper floor of the
building so that these areas are solar-heated
during the warm season, having windows which can
open to cool off your building when needed,
allowing cooler air to enter in the lower areas
of your building to cool the building, and
placement of windows on the south side of the
building to maximize heat and light into the
building.
However, when we talk about solar power heating
systems, we are normally talking about active
solar energy, which can be used to heat your
house and heat the water which you need to use.
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To use solar power to heat your house, you
will need to install collector panels on the
south side of your building. The best type
of panel to use is a perforated-plate solar
collector, which is a metal panel with
evenly-spaced holes spread across its
surface and mounted away from the wall,
creating an air gap between the panel and
the wall. The number of panels will depend
on a number of conditions, such as how large
is your building, and how much heat which
you will need the collectors to generate. As
air rises through the panels, it is heated
by solar rays, and is vented into the
buildings when it reaches the top of the
collectors. In addition, the panels
recapture much of the heat that flows out of
the wall, and redirects this heat back into
the collectors. This type of heat generating
system has become fairly inexpensive. In
Canada, a four panel system can cost as less
as $300! |
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Solar water heaters work on similar principles.
The sun’s energy is collected through south
facing collector panels, such as flat plate or
evacuated tube collectors. A system controller
compares the temperature of the solar collectors
with an indoor water tank. When there is enough
heat in the solar collectors to heat the water
in the tank, the controller signals the pump to
start sending a heat transfer fluid to the
collectors to gather the heat. This fluid
circulates through a heat exchanger, which heats
up the water in the indoor water tank. The tank
then dispenses hot water into the cottage’s
water system as needed. At the end of the day,
some models have a special anti-freeze fluid,
keeping the pipes from freezing, while other
units drain all the water contents into the
water tank. |
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Solar Power heating the home |
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One question that is often asked when it
comes to using solar power to heat air
or water is “Will it work on cloudy
days?” Another similar point that is
often brought up is that during the
winter, Canada tends to receive less
solar power than other areas. Will solar
power provide the same amount of heat
during the winter? Just as solar
electricity has battery storage systems
to store electrical charges for the
evening, solar heating systems have
storage facilities for the heat to save
it for days where there is less sun.
Thermal energy is collected through the
solar collectors and transferred to
underground storage. This temperature
increases through the summer months, and
is released when necessary during the
cloudy winter months. It goes without
saying that bright sunny winter days
pose no problem for solar heating
systems. |
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If you are looking for an inexpensive way to
heat your cottage, or potentially lower the cost
of your heating bills for your current home,
take a look at solar power- a renewable,
inexhaustible resource.
To read our article on solar power electrical
systems, click
here. |
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