Enthalpy is internal energy plus pressure energy ================================================ Enthalpy :math:`H` of a thermodynamic system is defined as the sum of its internal energy :math:`U` and the product of its pressure :math:`p` and volume :math:`V`, which is sometimes referred to as the pressure energy. **Links:** #. `Wikipedia `__. .. py:currentmodule:: symplyphysics.laws.thermodynamics.enthalpy_is_internal_energy_plus_pressure_energy .. py:data:: enthalpy :attr:`~symplyphysics.symbols.thermodynamics.enthalpy` of the system. Symbol: :code:`H` Latex: :math:`H` Dimension: :code:`energy` .. py:data:: internal_energy :attr:`~symplyphysics.symbols.thermodynamics.internal_energy` of the system. Symbol: :code:`U` Latex: :math:`U` Dimension: :code:`energy` .. py:data:: pressure :attr:`~symplyphysics.symbols.classical_mechanics.pressure` inside the system. Symbol: :code:`p` Latex: :math:`p` Dimension: :code:`pressure` .. py:data:: volume :attr:`~symplyphysics.symbols.classical_mechanics.volume` of the system. Symbol: :code:`V` Latex: :math:`V` Dimension: :code:`volume` .. py:data:: law :code:`H = U + p * V` Latex: .. math:: H = U + p V