In thermodynamics, is the sum of the internal energy and the product of pressure and volume of a system. The characteristic function (also known as thermodynamic potential) used to be called , which is why it is conventionally indicated by . The specific enthalpy of a working mass is a property of that mass used in thermodynamics, defined as , where is the specific internal energy, is the pressure, and is specific volume. In other words, where is the mass of the system. The SI unit for is
In thermodynamics, is the sum of the internal energy and the product of pressure and volume of a system. The characteristic function (also known as thermodynamic potential) used to be called , which is why it is conventionally indicated by . The specific enthalpy of a working mass is a property of that mass used in thermodynamics, defined as , where is the specific internal energy, is the pressure, and is specific volume. In other words, where is the mass of the system. The SI unit for is
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