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Example of active solar energy: solar thermal power plant

Example of active solar energy: solar thermal power plant

Solar thermal power plants are solar-powered facilities. They are examples of active solar energy since they use mechanisms and technology to improve solar gain and performance.

These types of plants make it possible to take advantage of solar radiation to produce electricity.

On the other hand, passive solar energy is a way to harness solar energy without using external elements. There are many techniques to take advantage of natural light and naturally occurring drafts to improve the thermal performance of a home. Passive solar energy is the basis of bioclimatic architecture.

How does a solar thermal power plant work?

Solar thermal power plants are thermal power…

Last review: April 11, 2021

What is active solar energy?

What is active solar energy?

Active solar energy is a system that uses mechanical or electrical equipment to improve the performance of solar panels. These mechanisms are also used to process the energy obtained and obtain electrical or mechanical energy. These elements can be fans to circulate hot air, water pumps, solar trackers, etc.

In contrast, solar systems that do not use these devices are classified as passive solar power systems. Passive solar energy takes advantage of solar radiation directly.

Solar trackers are often used to improve the performance of converting the Sun’s energy. Thanks to the trackers, the panels remain optimally oriented to the Sun.

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Types…

Last review: April 10, 2021

How does a hybrid solar system work?

How does a hybrid solar system work?

Hybrid solar systems are hybrid power systems that combine the photovoltaic system with another energy source. However, the term “hybrid solar panels” refers to solar and battery storage connected to the grid systems.

Hybrid photovoltaic systems have the advantage that it is not necessary to significantly oversize the solar generator for periods of low irradiation. It represents a considerable cost saving. The system always uses the energy produced by the module as a priority.

These systems have batteries for isolated locations and a backup power generator set, starting if the energy obtained is not enough.

Hybrid solar systems generate power in the same way…

Last review: April 9, 2021

Bioclimatic strategies in architecture

Bioclimatic strategies in architecture

Bioclimatic architecture strategies are based on three axes:

  • Capture solar radiation and use it for domestic activities.

  • Transmit solar energy and protect it.

  • Save energy or evacuate it according to needs.

Bioclimatic architecture aims to obtain the conditions of thermal comfort in a home by taking advantage of natural resources. In this way, it is possible to air-condition the house with a much higher energy efficiency.

These requirements are essential, especially in warmer regions (such as the Mediterranean). In these regions, the capture and conservation of energy in winter seems to contradict protection and…

Last review: March 29, 2021

Definition of bioclimatic architecture

Definition of bioclimatic architecture

Bioclimatic architecture is a type of ecological construction in which natural elements of the place are used. Build­ing designs that take into account climate and environmental conditions to achieve thermally efficient buildings.

The bioclimatic concept uses available natural resources in a building design (sun, vegetation, rain, wind, etc.). It is adapted and based on the local climate, so passive solar energy plays a fundamental role.

The bioclimatic approach is related to the principle of self-sufficiency. It aims to reduce the environmental impact caused by fossil fuels and nuclear energy.

Homes built using traditional architecture generate gas and CO2…

Last review: March 28, 2021

How yo can save money using solar energy?

How yo can save money using solar energy?

Solar energy represents an exciting option that allows you to save on the consumption of the electricity bill.

Solar energy is one of the most suitable and easy to install renewable energy systems in your home. Today, it displays a good solution for energy saving. It is also an ecological and profitable option to increase the value of your home.

Among the different options offered by solar energy, the following types can be used in a home:

  • Photovoltaic solar panels allow you to obtain electrical energy directly.

  • Thermal solar panels allow obtaining savings in the consumption of thermal energy. They can be used to obtain domestic hot water DHW…

    Last review: March 17, 2021

What is a luminescent solar concentrator?

What is a luminescent solar concentrator?

A luminescent solar concentrator (LSC) is a device capable of absorbing and concentrating sunlight to produce electricity. Luminescent solar concentrators capture solar radiation over a large area. Subsequently, they convert this radiation into luminescence and direct it to a smaller target with a photovoltaic receiver.

LSC panels are cheaper than classic photovoltaic panels. In fact, they are made of plastic or glass plates on which the luminescent molecules are deposited.

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How does a luminescent solar concentrator work?

LSCs are transparent active photographic plates capable of absorbing light from a wide spectrum of solar radiation.

Last review: March 16, 2021

At what temperature does the water boil?

At what temperature does the water boil?

The boiling temperature of pure water at sea level is 212 degrees Fahrenheit.

The temperature at which water boils is called the boiling point and depends on pressure. The more pressure, the lower the boiling temperature. Therefore, it also depends on the height since the atmospheric pressure decreases with increasing altitude. 

For example:

  • At sea level, pure water boils at 212 °F. (one atmosphere of pressure)

  • On Everest (8,848 meters high), the liquid boils at 86 degrees Celsius.

  • At an altitude of 19,000 meters, we cause the boiling point to change to 37ºC.

The boiling point of a liquid varies…

Last review: March 10, 2021

Closed system in thermodynamics

Closed system in thermodynamics

A closed system in a physical system is a system in which the materials contained in the system are not affected by other external agents.

Thermodynamic systems can be closed or open.

  • In thermodynamics, a closed system can exchange energy (such as heat or work), but the matter can not be transferred across the boundary.

  • On the other hand, an open system can exchange matter and energy. For example, in a hydroelectric power station, there is an exchange of energy and matter.

Closed systems are sometimes confused with isolated systems. In both cases, energy transfer is possible. However, an isolated system cannot exchange heat, work,…

Last review: February 26, 2021

Kaplan turbine

Kaplan turbine

The Kaplan turbine is a hydraulic turbine that uses small gradients, up to a few tens of meters, but with a massive flow of water rates, from 200/300 m³ / s. Kaplan turbines are widely used throughout the world in hydropower plants for electrical power production.

Constructively, this hydraulic turbine is a propeller, where the blades can be oriented since the water flow varies. This regulation allows the performance to remain high up to 20-30% of the nominal flow rates.

The turbine is usually equipped with fixed stator deflectors that guide the flow. Turbine efficiency can be optimized for a range more expansive than the ideal flow rate. This regulation is carried out…

Last review: November 19, 2020

What is biomass energy?

What is biomass energy?

Bioenergy is biological energy. Bioenergy allows living beings to move, have brain activity, food production, and biological tissue synthesis.

The concept of "bioenergy" is used both in:

  • The electric power industry

  • The heat power engineering 

  • The co-production of heat and electricity.

Biomass is a substance of organic material produced by organisms, including plants and animals. We do not consider fossil fuels as biomass. The substances of organic matter transformed by geological processes are not part of them.

Biomass is the biological material that is obtained from biological processes such as photosynthesis…

Last review: November 17, 2020