The City of Porvoo, black square on back is the church of this town |
Kimmo Huosionmaa
Silicon solar panels are all black, and they have been used in satellites long time. They would transfer the light to the electricity, and those panels are extremely lightweight. But they are also very easy to install on the roofs, and no outsider would ever notice that on the roof is installed solar panels. The answer for installation problems is that those panels would be drilled the holes in the factory, where screws or nails can be put, and the installation of those elements is as difficult as a normal roof material. Those solar panels would be covered by bulletproof glass, what would be protected the silicon layer. The electric wires might be pulled inside the house by the way, that they would not disturb the shape of the house. So this solution is suitable also for historic houses, which shape must not be broken with modern things.
The problem has been holes, what must be drilled in the glass, but the laser drill is the answer for that process. When the holes are drilled on the solar panel, there would be put steel socket, and then screws would be set thru it. The weather in Finland might change and the difference of temperature on summer and winter is huge. So those holes must be a little bit too big, that changing the size of elements would not cause wrecks in the material. Solar panels would not operate perfectly in winter, but bright days those systems might stable the use of central power plants.
This kind of systems would help the production of electricity in the state. When we are thinking about the use of green energy in large-scale solutions, we must say that there would not be the right answer, what might be the best version of the power solution for entire cities. The answer would be a hybrid solution, where the powerful central power plants are assisted with smaller units. One good solution would be solar power, what can be installed on the roofs, and that would not need new areas for those power units.
I always have wondered, why the electricity of cities cannot base in many smaller units, what are easier to adjust and control. The big units can be used in factories and other things like that. The small size power plants would be sized as the containers, and they can use fuel cells to produce electricity. The fuel cells can give very high voltages, and they are noiseless. Fuel cells can produce electricity in any burning gas or hydrocarbon like methane, and fuel cells can also make electricity straight without turbines and generators.
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