Summary of video funcionamiento solar termico basico

00:00:00 - 00:30:00

This video discusses the basics of solar thermal energy, explaining how it can be used to heat water or generate electricity. Solar thermal energy is clean and inexhaustible, and can help to reduce Spain's reliance on oil and other polluting sources of energy. The video explains the different components of a solar thermal installation, and how the system works to absorb and store solar energy. Solar thermal installations are resistant to weathering and erosion, and can be programmed to heat up at certain times of the day.

• 00:00:00 The video discusses the basics of solar energy, explaining that, just like in the daytime, the sun constantly emits energy in the form of photons. This energy is received by Earth's atmosphere and is then used by humans in different ways. For example, during the day, we receive free energy equivalent to 300 watts per square meter. At night, when it's dark, we receive less energy because the atmosphere blocks some of the sun's light. However, during the winter, when there are clouds, we can still use the sun's energy because part of the light is reflected and part is absorbed by the clouds. In Spain, we receive a lot of free energy from the sun, such as in Albacete, where we receive up to 30 kilovatios per square meter every year.
• 00:05:00 This video explains the basics of solar thermal energy, which can be used to heat liquids or generate electricity. Solar thermal energy can be collected by using photovoltaic (PV) panels to convert sunlight into heat, which can then be used to heat water, generate electricity, or heat buildings. Solar thermal energy is clean and inexhaustible, and can help to reduce Spain's reliance on oil and other harmful, polluting sources of energy.
• 00:10:00 Solar thermal installations use a turbine to generate electricity, and can be used to power homes with energy from solar thermal low or medium temperature sources. In these systems, we see collectors on the left side of the video. These systems can have low or medium temperature thermal energy generation, and can be used in residential buildings. Solar thermal systems with low temperature can be more common, as they are typically used in buildings without moving parts and with long life. They generate a decentralized energy source, each building receiving its own energy. The main components of a solar thermal installation are a solar thermal panel, an insulation layer, a water outlet, and a PV water heating system. These are all seen in the separate images. The solar thermal panel collects energy from the sun and transmits it to a water heating system. The insulation layer prevents heat loss through the panel and the water outlet prevents water damage to the panel. The PV water heating system heats water to the thermal energy conversion temperature and sends it to the water outlet. The system must be resistant to corrosion and chemical instability, and must have an air intake and air release system. The insulation layer must also be resistant to weathering and erosion. The solar thermal panel must be able to withstand high temperatures without losing its properties.
• 00:15:00 Solar thermal systems use a fluid to transfer heat from the sun to a building's interior. The fluid circulates through a series of tubes and a reservoir, absorbing heat as it goes. There are two main types of solar thermal systems: serpentine or meandering systems, and the more common parabolic system. The serpentine system is better at distributing heat evenly, while the parabolic system is better at storing heat in a state of rest. The transparent coverings on solar thermal collectors are designed to retain heat and keep the building insulated from the outside environment. The material must be stable in the temperature range of use, be resistant to moisture, and have a low coefficient of reflection for infrared energy. The selective treatment of solar thermal collectors results in higher performance systems.
• 00:20:00 The video discusses how a solar thermal collector works and the different components that make it up. It explains how the system absorbs direct sunlight and then transmits the heat to a fluid carrier. This system is designed to use the principle of "winterization" which means that short-wavelength radiation (radiation in the red and orange ranges) is absorbed by the collector's transparent cover, increasing its temperature. This in turn emits long-wavelength radiation (radiation in the violet and blue ranges) which is trapped by the cover, warming the fluid inside. This ultimately allows us to use solar energy to heat our fluid, in a similar way to how a car's engine works.
• 00:25:00 The video explains how a basic solar thermal installation works, with long-wavelength radiation being absorbed by a glass enclosure and short-wavelength radiation being passed through. The energy is then transferred to an auxiliary storage tank, and finally to a heating system that warms up the main collector. If there is a lot of solar radiation, the system does not overheat, as the collector is empty. A solar thermal installation can be programmed to heat up to a certain temperature at certain times of the day, ensuring that the energy is used most efficiently.
• 00:30:00 In the evening, when there is no radiation from the sun, the solar collector is empty and there is no risk of freezing or that the solar installation is ruined.Many thanks for your attention.I hope that you have been concerned about the benefits of solar thermal energy and that you will see me in future videos.Until next time, many thanks.