Solar energy is a very important for energy without damaging the environment and inexpensive alternative resource. However, it has some aspects that even today complicate its implementation in all homes.
What is solar energy?
Solar energy is a renewable energy more used today, and although there is much talk of it, do we know all the secrets that houses?
Origins of solar energy
The Sun casts on our planet 4,000 times more energy than they consume humans. This data already knew the late nineteenth century, when scientific Heinrich Hertz produced the first primary mechanisms with the intention of getting electricity from sunlight, although by then the efficiency of those called photovoltaic cell was only 1 or 2 percent.
Since the middle of last century, various researchers succeeded in developing other photovoltaic cells able to retain and transform almost 5% of solar energy. It was when they started publicly marketed these products, which have evolved to what they are today respectful with the environment and with over 20% efficiency.
Uses of Solar Energy
In the sunlight energy used to perform various actions is obtained. Perhaps the most common use is that of getting electricity through solar panels, in this case it is called photovoltaic solar energy, and is especially used in private households to supply them lighting, air conditioning or heating, among others.
The other type of energy called solar thermal energy, is what is used to heat liquids or food, through products like solar heaters and stoves. In this case, what is used is the thermal effect of sunlight and no PV.
Other lesser known uses of energy from the Sun are those of drinking water, evaporation, distillation and drying liquid, or get called green architecture (or what is the same, an architecture that does not cause environmental impact).
Disadvantages of solar energy
While this renewable energy has many advantages, we also found some drawbacks. The first, and most important, possibly the initial cost involved installation of products able to capture and exploit the light of the sun (either photovoltaic panels or solar stoves), an investment that actually pays for itself in a few years but who suddenly may not be suitable for all budgets.
The other disadvantage of solar energy is that it is not suitable for all areas of the planet, being difficult to seize in places with few hours of natural, such as the countries far removed from Ecuador on a globe light, which have few hours of sun per day (in winter also reduced the hours), or those with overcast and unstable climates.
Another drawback is that the energy produced by these systems are often not enough to cover the needs of a home, so it is often necessary to supplement with other methods.