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Temperature sensors, uses and types of sensors

Temperature sensors, uses and types of sensors

A temperature sensor is a device that measures temperature through electrical signals. This electronic device converts the information obtained into electronic data that can be monitored and recorded.

Temperature control is one of the most important measurements on a day-to-day basis.

For what are temperature sensors?

Temperature sensing is in everyday life. They are used in automobiles, medical devices, computers, kitchen appliances, and other types of machinery.

The temperature sensor is a fundamental element when it is required to work at a specific temperature within any manufacturing process, such as foundries, steam engines, food product processing, etc.

Last review: June 11, 2021

What are the main temperature scales?

What are the main temperature scales?

Temperature scales (or thermometric scales) are the scales used to determine the temperature of a body by measuring it in degrees. A temperature scale is a method of expressing the physical quantity temperature in a number.

Temperature is a scalar quantity that measures the amount of thermal energy that a body has.

There are two types of temperature scales:

  • Empirical scales. These scales are based on the measurement of physical parameters,  usually a simple linear, functional relationship.

  • Thermodynamic scales. These scales are absolute and are based on the fundamental laws of thermodynamics or statistical mechanics.

There…

Last review: June 8, 2021

What is the difference between heat and temperature?

What is the difference between heat and temperature?

Heat and temperature are two concepts that are so closely related that they are often confused with each other. The differences between heat and temperature are:

  • Heat is the thermal energy transferred between two or more bodies, while the temperature is a thermodynamic property that measures the thermal state of a body.

  • Heat is measured in Joules (J) or calories (cal), while the temperature is measured in Kelvin, degrees Celsius, or degrees Fahrenheit.

  • The calorimeter is the device that measures energy in transfer, that is, heat, while we can use a temperature sensor or a thermometer to measure the temperature.

  • The effect…

    Last review: June 7, 2021

  • List of planets of our solar system

    List of planets of our solar system

    The Solar System formed about 4.6 billion years ago inside the Milky Way. The Solar System is the set of stars and celestial matter that orbit around the Sun.

    The planets of the Solar System ordered by distance from the sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

    Our planetary system distinguishes two types of planets:

    • Inner planets, which are the closest to the Sun and are rocky: The planets that make up this list are the planets Mercury, Venus, Earth, and Mars. 

    • The outer planets are Jupiter, Saturn, Uranus, and Neptune.

    What are the dwarf planets?

    This list does not include the…

    Last review: June 5, 2021

    Francis turbine, operation, advantages and disadvantages

    Francis turbine, operation, advantages and disadvantages

    The Francis turbine is a hydraulic turbine used in hydraulic power installations that operate at a considerable height.

    James Bicheno Francis developed this turbine. The function of the Francis turbine is mainly to generate electricity with the help of a generator.

    The Francis turbine is the most common type of turbine installed in power generation plants that operate based on the mass flow of water through a production plant.

    In contrast to the Pelton wheels, the Francis turbine runs at its best, filled with water at all times.

    Francis turbine, advantages, and disadvantages

    The main benefits…

    Last review: June 3, 2021

    What are the limititations of the first law of thermodynamics?

    What are the limititations of the first law of thermodynamics?

    From its definition, the first law of thermodynamics presents three limitations on thermodynamic processes:

  • We cannot know whether a process is reversible or irreversible.

  • It does not indicate whether heat can flow from a cold body to a warm body.

  • In practice, it is not possible to convert thermal energy into an equivalent amount of work.

  • Before analyzing each of these limitations in detail, it is helpful to know what the first law of thermodynamics (or law of conservation of energy) establishes:

    What does the first law of thermodynamics tell us?

    The law of energy conservation states that the change in the…

    Last review: June 1, 2021

    How do power plants generate electricity?

    How do power plants generate electricity?

    An electrical power plant is a facility to generate electricity. A power plant has equipment and devices to convert different kinds of energy into electrical energy. It also includes the structures and buildings necessary for this purpose. 

    The operation of the vast majority of power plants is based on the principle of converting the energy from various types of motors into mechanical energy of rotation of the rotor of an electric generator. Afterward, it is converted into electricity. There are also facilities for the direct conversion of energy into electrical energy, for example, photovoltaic plants that take advantage of solar energy.

    Today, the most common type of…

    Last review: April 18, 2021

    What is active solar heating?

    What is active solar heating?

    Solar heating is a set of systems that exploit the direct conversion of solar energy into thermal energy. Let's see the types that make it possible to reduce energy consumption and pollution and the most practical uses.

    There are two distinct types of solar heating systems:

    • Passive solar heating systems whose energy systems do not use additional devices to take advantage of the sun’s energy. These systems take advantage of hot water and heated air.

    • Active solar heating systems. In this case, its solar energy systems use external devices such as solar panels, air collectors, etc.

    Active solar heating definition

    Solar…

    Last review: April 17, 2021

    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