Lay flat.
When the fish pond solar watering panel is placed flat, it can effectively receive the light energy converted by the sun. Solar energy generally refers to radiant energy from sunlight. The nuclear reaction of hydrogen fusion into helium inside the sun continually releases enormous energy and radiates energy to the universe. This energy is solar energy.
Solar cells are devices that use the photoelectric effect of semiconductor materials to convert solar energy into electrical energy. The basic process of photovoltaic effect: Assuming that light shines on the solar cell and is accepted at the interface layer, photons with sufficient energy can excite electrons of covalent bonds in P-type silicon and N-type silicon, resulting in thephotovoltaic effect. generation of electrons Pair of holes. Electrons and holes adjacent to the interface layer will be separated from each other by the electric field of the space charge before recombination. The electrons move towards the positively charged N region and the holes move towards the negatively charged P region.
1. Why are solar energy harvesting devices always placed at an angle?
Indeed, the solar energy collection device must use sunlight as much as possible. Let's take Guangzhou as an example to illustrate:
First of all, you need to know the latitude of Guangzhou
Guangzhou is located on the Tropic of Cancer; 22.26 degrees north latitude. To make the calculation easier, calculate Make 23 degrees.
The maximum solar altitude angle at the summer solstice is 90 degrees, so the tilt angle of the heating plate is 0 degrees at this time. ;
But the minimum solar altitude angle at winter solstice is 90 degrees -23-23=44 degrees, the best heating plate tilt angle is 90-44=46 degrees;
p>That is, the inclination angle of the heating plate is between 0 and 46 degrees. Then it is recommended to tilt the angle should be around 20 degrees, facing south, which allows better utilization of solar energy.
2. Are there any solar energy harvesting devices that can lay flat?
Is there such a place on earth? It is a place where the sun's altitude angle is 90 degrees all year round (the sun is always overhead).
If available, the solar energy harvesting device in this location must be laid flat.