If you truly want to go green, then it’s a good idea to take it upon yourself to learn the science behind it and the science in particular about alternative sources of energy. By bettering understanding how these work you can stay on top of new developments, and you can choose more carefully which technologies to employ yourself.
Solar energy is one of the top considerations for anyone going green and yet many of us know little about it. For instance, one thing that many people don’t know is that there is more than one type of solar energy, and that these work in very different ways. These are:
Solar Thermal: Solar thermal energy is the lesser known form of solar energy among those going green. Here it is the heat energy from the sun that is of interest which is used to heat water that can then be employed for various other applications. Solar thermal solar panels utilize panels covered in tiny tubes carrying water. These are then simply heated by the sun before being rerouted to work in heat pumps and other systems.
Photovoltaic: if you have been looking at going green by using solar panels, then it is likely photovoltaic solar energy that you will be particularly interested in. This has more applications for going green and can be used to run electrical appliances etc. It is a little more complicated to understand though.
Basically photovoltaic cells are made out of silicon and other materials which absorb sunlight. Here it is the actual light we are interested in rather than the heat (hence the name photovoltaic) and this is used to excite electrons that are packed into the solar cells. This causes them to behave as a direct current (DC). This in turn is run through a transformer to be converted into alternating current (AC) for home use and going green.