quantitykind:Enthalpy

Type
Description

In thermodynamics, $$\textit{enthalpy}$$ is the sum of the internal energy $$U$$ and the product of pressure $$p$$ and volume $$V$$ of a system. The characteristic function (also known as thermodynamic potential) $$\textit{enthalpy}$$ used to be called $$\textit{heat content}$$, which is why it is conventionally indicated by $$H$$. The specific enthalpy of a working mass is a property of that mass used in thermodynamics, defined as $$h=u+p \cdot v$$, where $$u$$ is the specific internal energy, $$p$$ is the pressure, and $$v$$ is specific volume. In other words, $$h = H / m$$ where $$m$$ is the mass of the system. The SI unit for $$\textit{Specific Enthalpy}$$ is $$\textit{joules per kilogram}$$

Properties
$$H = U + pV$$, where $$U$$ is internal energy, $$p$$ is pressure and $$V$$ is volume.
Annotations
In thermodynamics, $$\textit{enthalpy}$$ is the sum of the internal energy $$U$$ and the product of pressure $$p$$ and volume $$V$$ of a system. The characteristic function (also known as thermodynamic potential) $$\textit{enthalpy}$$ used to be called $$\textit{heat content}$$, which is why it is conventionally indicated by $$H$$. The specific enthalpy of a working mass is a property of that mass used in thermodynamics, defined as $$h=u+p \cdot v$$, where $$u$$ is the specific internal energy, $$p$$ is the pressure, and $$v$$ is specific volume. In other words, $$h = H / m$$ where $$m$$ is the mass of the system. The SI unit for $$\textit{Specific Enthalpy}$$ is $$\textit{joules per kilogram}$$
Enthalpy(en)

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