Is solar energy a new energy source?1 article accurate make it clear!

Is solar energy a new energy source

Solar energy is a new energy source, and solar energy is a renewable energy source. It refers to the thermal radiation energy of the sun, and its main manifestation is often referred to as solar rays.

There are two ways to utilize solar energy: photothermal conversion and photoelectric conversion. Solar power generation is an emerging renewable energy source. Solar energy in a broad sense also includes wind energy, chemical energy, water energy, etc. on the earth.

What is the definition of solar energy?

Solar energy is a renewable energy source. It refers to the thermal radiant energy of the sun (see the three ways of heat energy propagation: radiation), and its main manifestation is often referred to as solar rays. In modern times, it is generally used to generate electricity or provide energy for water heaters.

Since the birth of life on earth, it has mainly relied on the thermal radiation energy provided by the sun. Since ancient times, humans have also known how to use sunlight to dry objects and use it as a method of making food, such as making salt and drying salted fish.

With fossil fuels dwindling, solar energy has become an important part of human energy use and continues to develop. There are two ways to utilize solar energy: photothermal conversion and photoelectric conversion. Solar power generation is an emerging renewable energy source. Solar energy in a broad sense also includes wind energy, chemical energy, water energy, etc. on the earth.

Integration of solar energy systems into buildings can reduce reliance on traditional power grids
Integration of solar energy systems into buildings can reduce reliance on traditional power grids

What are the conversion forms of solar energy?

The conversion forms of solar energy include photothermal conversion, photoelectric conversion, and photochemical conversion. Solar thermal utilization technology converts heat energy into heat energy through various heat collection components and then uses it directly.

It can be divided into low temperature (100°C-300°C), industrial heat, refrigeration, air conditioning, cooking, etc.; high temperature (above 300°C), thermal power generation, high temperature material processing, etc.

Photovoltaic power technology is a power generation process that uses solar energy to generate thermal energy and then converts it into mechanical energy. The power generation system mainly consists of a heat collection system, a heat transmission system, a heat accumulator, a heat exchanger, and a turbine generator system.

Solar photoelectric conversion technology Sunlight irradiates a semiconductor junction with a diffusion structure type to generate electron-hole pairs. The uncombined electron-hole pairs generated inside the semiconductor are attracted by the internal electric field. The electrons flow into area A and the holes flow into area B, causing area A and area B to generate electromotive force. If a load is connected to the outside, electric energy can be output.

There are many types of solar cells, such as monocrystalline silicon cells, polycrystalline silicon cells, amorphous silicon cells, cadmium sulfide cells, zinc arsenide cells, etc., which are made using this principle.

Photochemical conversion technology Photochemistry is a branch of chemistry that studies chemical reactions caused by the interaction of light and matter. A photochemical cell is a battery that uses light to illuminate the interface between a semiconductor and an electrolyte to cause a chemical reaction, form an electric current in the electrolyte, and ionize water to directly produce hydrogen.

What are the main characteristics of new energy?

  1. Resources are abundant and generally have renewable characteristics and can be used sustainably by humans;
  2. The energy density is low and requires a large space for development and utilization;
  3. Contains no carbon or very little carbon and has little impact on the environment;
  4. Wide distribution, conducive to small-scale decentralized utilization;
  5. Intermittent supply and high volatility are detrimental to continuous energy supply;
  6. Except for hydropower, the development and utilization cost of renewable energy is higher than that of fossil energy.
Solar energy harnesses the power of sunlight to generate electricity through photovoltaic cells
Solar energy harnesses the power of sunlight to generate electricity through photovoltaic cells