Fundamentals
============

This section explains the thermodynamic concepts behind OpenPinch. These pages
are method references, not API tutorials: they explain what the calculation or
graph means before the guides show how to run it.

.. toctree::
   :maxdepth: 1

   pinch-analysis
   problem-table-and-temperature-shifting
   direct-vs-indirect-integration
   zones-streams-utilities-and-targets
   graphs-and-interpretation
   heat-pump-and-refrigeration-methods
   cogeneration-methods