Solar water heaters convert solar energy into physical thermal energy. The vacuum tube absorbs solar light and heat, transfers heat to cold water, and heats the water from low temperature to high temperature to meet people's thermal needs. in life and water production. No reactions occur during this process, only the transfer and transformation of energy.
Detailed information:
(1) Active solar heating
The active solar system consists of solar collectors, thermal storage devices, heating equipment, auxiliary heat sources and composed of associated auxiliaries. equipment and valves.
Solar radiation energy collected via the solar collector can be sent indoors along the pipe to provide heating and water chot sanitary. The remaining part can be stored in the thermal storage device when heat is supplied by the. The solar collector is It can be removed and used when it is insufficient, and a supplementary heater can be used to supplement it when it is insufficient.
(2) Passive solar energy
Passive solar heating is a method of indoor heating via heat collection and storage walls, supplementary greenhouses, heat storage roofs, heat, etc. The characteristic of passive solar energy is that it does not require special solar collectors, auxiliary heaters, heat exchangers, pumps and other components necessary for active solar energy systems, but it relies on a reasonable arrangement of the orientation of the building and the surrounding environment.
(3) Solar energy - heating by heat pump
In current technical conditionsThey, there is no problem in simply using solar collectors for heating, but due to economic conditions, there is still a problem. This is definitely a problem. In summer, solar energy is used to store heat from underground sources and water as a heat source for heating in winter, and thanks to the principle of heat pumps, electrical energy consumption can be significantly reduced. saved.
Baidu Encyclopedia - Solar Heating
The most widely used solar energy on Earth is that of plants and a very small number of microorganisms convert light energy in plants through photosynthesis. . chemical energy is stored. When animals eat plants, energy from the plants is transferred to the animals. When humans eat plants and other animals, they also get energy.
The artificial use of useful solar energymainly uses technologies such as silicon microplate solar cells to store solar energy and then provide it to other devices.
Let me add that many animals (including humans) ) All animals can rely on the sun to regulate their body temperature, especially cold-blooded animals, which rely heavily on the sun because their body temperature regulation depends on the sun. It is a way of converting solar energy into heat.