Wednesday 14 May 2014
Investment opportunites in the solar panels in Poland
Despite the fact that Poland is not particularly sunny
country (in comparison to Southern Europe), there is a lot of investment in the
sector of solar pannels. As if it was not surprising enough, there are many
producers of instrumentation for clean production of electricity and heat, from
the sun rays.
It is very important to differentiate traditional
solar panels from photovoltaic solar panels. The main difference is type of
energy collected. Solar thermal (commonly called
solar panels) can only collect heat which is less useful then electricity and
can't be sold to the utilities. On the contrary, photovoltaics are transforming
sun rays into electricity that, in the favourable infrastructure having smart
grid, can be sold to the grid (even by small producers, such as household). Solar
thermal can be very efficient ( even 80% ) while photovoltaics are typically
15% to 20% efficient.
The functioning of a classical solar panel
is simple, as well as its construction. Based on the information of Viessman
(who has been building such collectors already in 1960s), I have designed the
simple sketch presenting functioning of the solar panel (pretty simplified).
The absorber of the sun rays has one
principle function – to collect the rays and transform them into the heat.This part of
the panel is most often made of
copper or aluminum, because they are capable of high heat conductivity. The task of the wire of heating medium
(mostly glycol) is the efficient
uptake of heat produced. Wires where the medium circulates are
connected in parallel or 'snake'
(more expensive, but more effective solution). The wires are connected to the
battery.
The most important element , which
determines the cost-effectiveness of solar collectors in Poland is the use of
energy produced and what fuel was so far powered house .
From the data presented by one of the manufacturers of solar panels in Poland ( SonErgo ) shows that the average amount of energy that falls in our country to 1m2 per year, is 1,150 kWh. Exposure time of the sun throughout the year ranges from 1200-1700 hours. The map below presents the level of sun exposure in Poland during a year.
From the data presented by one of the manufacturers of solar panels in Poland ( SonErgo ) shows that the average amount of energy that falls in our country to 1m2 per year, is 1,150 kWh. Exposure time of the sun throughout the year ranges from 1200-1700 hours. The map below presents the level of sun exposure in Poland during a year.
The most important point of reference in
evaluating the investment of solar panels is our daily water consumption. Purchase of solar panels becomes profitable at a daily
water consumption of 250 L. It is also necessary to recalculate what are the
costs of heating water consumption current heating system (in order to compare the savings). In
summary, a great collectors will check and give savings and consume a lot of
water daily .
Whoever takes into consideration installing solar panels in Poland, needs to take into account the fact that the largest solar heat gain will be achieved from spring to autumn ( flat plate collectors, as described on the picture ). Flat-plate collectors dominate in Poland over the vacuum solar panels (with pipes with vacuum), due to weather conditions. Despite the fact that vacuum solar panels can work in the winter time, created heat is not of such significance. Furthermore, vacuum solar panels have short guaranty period.
Whoever takes into consideration installing solar panels in Poland, needs to take into account the fact that the largest solar heat gain will be achieved from spring to autumn ( flat plate collectors, as described on the picture ). Flat-plate collectors dominate in Poland over the vacuum solar panels (with pipes with vacuum), due to weather conditions. Despite the fact that vacuum solar panels can work in the winter time, created heat is not of such significance. Furthermore, vacuum solar panels have short guaranty period.
On
the internet, there are many calculators that allow calculation of the
profitability of the investment. What
one needs to remember is the fact that installing solar panels (especially in
regions with such medium sun exposure as Poland) it is rather a long-term
investment and should be considered in a long time perspective.
____________________
Picture, map of Poland: http://top-solar.pl/public/assets/duza-mapa-polski.jpg
Picture, solar panel: http://budujesz.info/pliki/image/artykuly/budowa-i-remont/duze/panele-sloneczne60.jpg
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Now alongside comes the following expertise improvement, LED lighting. This new lighting is more expensive than what we now have had, however once more way more efficient. And it doesn't have the draw back of toxic elements. Comparatively, LEDs have a brighter light (larger lumens) than CFLs, they've an influence factor of .9 which means many of the energy is transformed into light (CFLs convert more of that power into warmth) and so they eat 30% less energy than CFLs.
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