With the development of economy and society, existing energy sources have been hard to meet the increasing market demands. due to the lack of fossil fuels and environmental problems, an increasing number of people pay more attention to alternative energies because they are directly related to the future economic and social development. Therefore, this essay will discuss how to harness alternative sources of energy effectively, with a particular focus on solar energy.
Solar energy is one the alternative energy source that is used most widely across the globe. About 70% of the light that hit the earth gets reflected back to space and only the remaining 30% light is enough to meet up our needs for years to come. So, solar energy is the energy that we get from the sun. We get enough energy from the sun that it could meet up our power demands, if only we could harness it properly. In order to harness solar energy effectively, it is important to use advance technology to improve the efficiency of using solar energy. Basically there are two ways.
The first way is solar thermal, which is also known as solar water heating. In this process, solar energy is used directly to generate heat. Solar panels are used to trap the heat from the sun and are used to heat water in the glass panels. Glass panels are painted black so that they absorb maximum energy from the sun, then water is pumped through these pipes. These panels are positioned in such a way to maximize the absorption of heat throughout the day and can help in reducing the electricity bills. Another approach to harness solar energy is photovoltaic Cells. This method converts the sun’s energy into electricity. These cells are silicon based pieces of materials that absorb the sun’s light. When the sunlight enters the cells, it causes the electrons to move. These electrons move in a certain direction which is known as current. This electricity is