Hi,(adsbygoogle = window.adsbygoogle || []).push({});

As is commonly known,

u = u(T,v)

h = u(T,p)

I've worked with some maths proofs of this a while ago, but do you guys have an intuitive way of understanding this without the maths, that is, why the state function for internal energy is defined by intensive volume and enthalpy with pressure?

I seem to recall, I used the model for thought, that if a system had a moving boundary, as in the case of a changing enthalpy, then the volume would not stay constant, so we could not use the constant volume specific heat capacity, so we used specific pressure, but I feel like a new way of thinking about it is required for me..

**Physics Forums - The Fusion of Science and Community**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# State Functions for Internal Energy and Enthalphy

Have something to add?

Draft saved
Draft deleted

Loading...

Similar Threads - State Functions Internal | Date |
---|---|

I need help with matlab designing a steady state feedback H2 control system | Apr 29, 2017 |

What will be the equilibrium state in the liquid N2 chamber? | Nov 2, 2016 |

Steady State Heat Equation with Source | Nov 9, 2015 |

How to give a step input in Matlab? | Sep 25, 2015 |

Heat content as a state function? | Sep 18, 2011 |

**Physics Forums - The Fusion of Science and Community**