thermal energy


thermal energy
Internal energy of a system in thermodynamic equilibrium (see thermodynamics) by virtue of its temperature.

A hot body has more thermal energy than a similar cold body, but a large tub of cold water may have more thermal energy than a cup of boiling water. Thermal energy can be transferred from one body, usually hotter, to a second body, usually colder, in three ways: conduction (see thermal conduction), convection, and radiation.

* * *

      internal energy present in a system in a state of thermodynamic equilibrium by virtue of its temperature. Thermal energy cannot be converted to useful work as easily as the energy of systems that are not in states of thermodynamic equilibrium. A flowing fluid or a moving solid, for example, possesses energy that can be converted to work in some mechanical device, such as a windmill or a waterwheel, but the same fluid or solid in a thermodynamic equilibrium state having the same energy (as thermal energy) can do no work unless it is combined with another substance at a different temperature, as in a heat engine.

* * *


Universalium. 2010.

Look at other dictionaries:

  • Thermal energy — is the sum of the sensible energy and latent energy.Internal energy Internal energy – the sum of all microscopic forms of energy of a system. It is related to the molecular structure and the degree of molecular activity and may be viewed as the… …   Wikipedia

  • thermal energy —  Thermal Energy  Тепловая энергия   Форма энергии, связанная с движением атомов, молекул или других частиц, из которых состоит тело. По сути, тепловая энергия это энергия механических колебаний структурных элементов вещества (будь то атомы,… …   Толковый англо-русский словарь по нанотехнологии. - М.

  • Thermal Energy —   The energy developed through the use of heat energy …   Energy terms

  • thermal energy — The energy emitted from the fireball as thermal radiation. The total amount of thermal energy received per unit area at a specified distance from a nuclear explosion is generally expressed in terms of calories per square centimeter …   Military dictionary

  • thermal energy — šiluminė energija statusas T sritis fizika atitikmenys: angl. heat energy; thermal energy vok. thermische Energie, f; Wärmeenergie, f rus. тепловая энергия, f pranc. énergie calorifique, f; énergie thermique, f …   Fizikos terminų žodynas

  • thermal energy — šiluminė energija statusas T sritis Energetika apibrėžtis Atomų ir molekulių betvarkio judėjimo energija. Šį judėjimą apibūdina medžiagos temperatūra. atitikmenys: angl. thermal energy vok. Wärmeenergie, f rus. тепловая энергия, f pranc. énergie… …   Aiškinamasis šiluminės ir branduolinės technikos terminų žodynas

  • thermal energy — noun a) The internal energy of a system in thermodynamic equilibrium due to its temperature b) A form of energy; sensible energy; heat …   Wiktionary

  • thermal energy — heat energy …   English contemporary dictionary

  • thermal energy — noun : energy in the form of heat …   Useful english dictionary

  • Thermal (energy) Storage —   A technology that lowers the amount of electricity needed for comfort conditioning during utility peak load periods. A buildings thermal energy storage system might, for example, use off peak power to make ice or to chill water at night, later… …   Energy terms


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.