What are the disadvantages of solar hot water?
Advantages and disadvantages of solar energy
What is solar energy?
- Solar energy is produced by the fusion of hydrogen and helium atoms in the sun to release huge nuclear energy, which is the radiation energy from the sun. The vast majority of human energy needs come directly or indirectly from the sun. Plants release oxygen through photosynthesis, absorb carbon dioxide, and convert solar energy into chemical energy for storage in plants. Fossil fuels such as coal, oil, and natural gas are also primary energy sources that evolved from animals and plants buried underground in ancient times over a long period of geological time. The energy contained in the earth itself usually refers to the energy related to the thermal energy inside the earth and the energy related to the nuclear reaction.
- It is a clean, renewable energy source that is widely used around the world. At present, limited by the level of capital and technology, only a small proportion of the sun's energy has been effectively developed and utilized. Although a clean and renewable energy source, solar energy is far from being a perfect form of energy and is unlikely to replace other forms of energy. Consumers and businesses should consider the many advantages and disadvantages of solar energy before deciding whether to utilize the sun's energy.
- One must recognize the many advantages and disadvantages of solar energy before making a decision to switch to expensive solar energy. Using this energy source does have its benefits. Solar panels do not have any pollution, and there is little pollution during their production. Solar panels generate energy silently, in that sense, at least uninterrupted. As long as solar panels are not damaged, they can provide free energy to a home or business year-round.
- While providing free energy year-round and reducing reliance on fossil fuels may sound like feats, the pros and cons of solar power cannot be tested without paying attention to its price, which is considered the biggest obstacle to converting to solar energy.
Main categories of solar energy
- A photovoltaic panel module is a power generation device that generates direct current when exposed to sunlight, and consists of solid photovoltaic cells made almost entirely of semiconductor materials such as silicon. Simple photovoltaic cells can provide energy for watches and computers, and more complex photovoltaic systems can provide lighting for houses as well as traffic lights and monitoring systems, which are integrated into the grid.
- Modern solar thermal technology aggregates sunlight and uses its energy to generate hot water, steam and electricity. In addition to using appropriate technology to harvest solar energy, buildings can also harness the sun's light and heat by incorporating appropriate equipment in the design, such as giant south-facing windows or using building materials that absorb and slowly release the sun's heat .
Solar application field
- Its basic principle is to collect solar radiation energy and convert it into heat energy through interaction with matter. At present, the most used solar collectors mainly include flat plate collectors, evacuated tube collectors, ceramic solar collectors and focusing collectors.
Solar energy generation
- The large-scale utilization of solar energy in the future of Qingli New Energy is to generate electricity. There are many ways to use solar power to generate electricity. At present, there are mainly the following two types.
- (1) Light-heat-electricity conversion. That is, the use of heat generated by solar radiation to generate electricity. Generally, solar collectors are used to convert the absorbed thermal energy into steam of the working medium, and then the steam drives the gas turbine to drive the generator to generate electricity. The former process is light-thermal conversion, and the latter process is thermal-electrical conversion.
- (2) Optical-electrical conversion. Its basic principle is to use the photovoltaic effect to directly convert solar radiation energy into electrical energy, and its basic device is a solar cell.
- (3) Light-to-chemical conversion
- This is a photo-chemical conversion method that utilizes solar radiation to directly split water to produce hydrogen. It includes photosynthesis, photoelectrochemical action, photosensitive chemical action and photolysis reaction.
- Photochemical conversion is the process of converting into chemical energy due to the absorption of light radiation resulting in a chemical reaction. Its basic forms include photosynthesis of plants and photochemical reactions that utilize chemical changes in substances to store solar energy.
- The European Union has been committed to the development and production of "solar" fuel since June 2011, utilizing the high-temperature energy provided by sunlight and using water and carbon dioxide as raw materials. As of now, the R&D team has successfully achieved the full process production of renewable fuels on a laboratory scale for the first time in the world. Its products fully comply with the European Union's aircraft and automotive fuel standards, without the need for any adjustments or modifications to aircraft and automotive engines.
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