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Internal heat is the heat source from the interior of celestial objects, such as stars, brown dwarfs, planets, moons, dwarf planets, and (in the early history of the Solar System) even asteroids such as Vesta, resulting from contraction caused by gravity (the Kelvin–Helmholtz mechanism), nuclear fusion, tidal heating, core solidification (heat of fusion released as molten core material solidifies), and radioactive decay. The amount of internal heating depends on mass; the more massive the object, the more internal heat it has; also, for a given density, the more massive the object, the greater the ratio of mass to surface area, and thus the greater the retention of internal heat. The internal heating keeps celestial objects warm and active.
tidal heating, core solidification (heat of fusion released as molten core material solidifies), and radioactive decay. The amount of internalheating depends...
Joule heating (also known as resistive, resistance, or Ohmic heating) is the process by which the passage of an electric current through a conductor produces...
varied weather when compared to Uranus is due in part to its higher internalheating. The upper regions of Neptune's troposphere reach a low temperature...
cathode into the gas. A cold-cathode vacuum tube does not rely on external heating of an electrode to provide thermionic emission of electrons. Early cold-cathode...
and the electric kettle, which is a small kitchen appliance with an internalheating element. The word kettle originates from Old Norse ketill, "cauldron"...
The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during...
insulated pipes for residential and commercial heating requirements such as space heating and water heating. The heat is often obtained from a cogeneration...
which occurs by self-heating (increase in temperature due to exothermic internal reactions), followed by thermal runaway (self heating which rapidly accelerates...
commonly referred to as a "cold-blooded animal", is an animal in which internal physiological sources of heat, such as blood, are of relatively small or...
Underfloor heating and cooling is a form of central heating and cooling that achieves indoor climate control for thermal comfort using hydronic or electrical...
Electric heating is a process in which electrical energy is converted directly to heat energy. Common applications include space heating, cooking, water...
source and a working fluid. Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing...
temperature for some planets, such as Jupiter, would need to include the internalheating as a power input. The actual temperature depends on albedo and atmosphere...
internal speaker/radio and filtration equipment. The suit had an internalheating system to regulate the body temperature. It was also thick enough to...
Milky Way galaxy, based on mathematical modeling studies of their internalheating rates. The majority of such worlds would probably have subsurface oceans...
iron is composed of a heated metal tip (the bit) and an insulated handle. Heating is often achieved electrically, by passing an electric current (supplied...
Moderate temperature radiant heating and cooling is usually composed of relatively large surfaces that are internally heated or cooled using hydronic...
designed to supply high discharge current pulses without excessive internalheating. The principal properties of a capacitor are capacitance, working voltage...
fires or by large deposits of radioactive elements. Other sources of internalheating can be gravitational differentiation of substances, tidal friction...
welding methods for thermoplastics can be classified as external and internalheating methods, as shown in Fig 1. Production of a good quality weld does...
windows in large aircraft have an anti-reflective coating, and an internalheating element to melt ice. Smaller aircraft may be equipped with a transparent...
Water heating is a heat transfer process that uses an energy source to heat water above its initial temperature. Typical domestic uses of hot water include...
in place. Heating in diamond-anvil cells is typically done by two means, external or internalheating. External heating is defined as heating the anvils...
An internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion...
in 1889. In 1889, Hall's production began to use the principle of internalheating. By September 1889, Hall's production grew to 385 pounds (175 kilograms)...
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