Enthalpy

Enthalpy

In thermodynamics and molecular chemistry, the enthalpy or heat content (denoted as H, h, or rarely as χ) is a quotient or description of thermodynamic potential of a system, which can be used to calculate the "useful" work obtainable from a closed thermodynamic system under constant pressure and entropy.

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Category: Fuel cell
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enthalpy

Electrical equipment; Fuel cell

In thermodynamics and molecular chemistry, the enthalpy or heat content (denoted as H, h, or rarely as χ) is a quotient or description of thermodynamic potential of a system, ...

enthalpy

Chemistry; Weather; Atmospheric chemistry

A thermodynamic variable that is a system's internal energy plus the product of its pressure and volume: H = E + PV.

enthalpy

Energy; Energy efficiency

A thermodynamic property of a substance, defined as the sum of its internal energy plus the pressure of the substance times its volume, divided by the mechanical equivalent of ...

enthalpy

Science; General science

For any system, that is, the volume of substance under discussion, enthalpy is the sum of the internal energy of the system plus the system's volume multiplied by the pressure ...

enthalpy

Household appliances; Air conditioners

Heat content or total heat, including both sensible and latent heat. The amount of heat contained in a refrigerant at any given temperature with reference to -40°F.

enthalpy

Chemistry; General chemistry

Enthalpy (H) is defined so that changes in enthalpy ( H) are equal to the heat absorbed or released by a process running at constant pressure. While changes in enthalpy can be ...

filament

Electrical equipment; Fuel cell

A thin wire that is enclosed in the bulb of an incandescent lamp and gives off light when an electric current is passed through it.

wet cell

Electrical equipment; Fuel cell

An electric cell in which the chemical compounds that produce the current are in the form of a liquid.

incandescent lamp

Electrical equipment; Fuel cell

A lamp that produces light by connecting an electric current to a very thin wire inside a glass bulb.

electromagnetic force

Electrical equipment; Fuel cell

The forces of attraction and repulsion that electric fields have for each other and that magnetic fields have for each other.

electrolysis

Electrical equipment; Fuel cell

The process of passing an electric current through a solution in order to cause a change in the chemical compound.

fusible plug

Electrical equipment; Fuel cell

A fusible plug is a threaded metal plug, usually made out of bronze, brass, or gunmetal.

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