Utilities

This utility script calculates entropy production rate and exergy loss rates, but specifically for adiabatic heat pumps or heat exchangers, only. It is used by the heat_pump_simple.py script.

It is found at: carbatpy.utils.exergy_loss

Carnot Battery

A simple Carnot battery run-script is found at carbatpy.utils.run_carnot_battery which goes through the thermodynamics.

This can be used as a starting point for own scripts and variations. The structure is for two double-tank storages, together with heat rejection to water at ambient temperature. Most of the scripts set pressures, temperature levels, fluid compositions, heat-flow rates etc. The heat pump instance is hp0 and the ORC is orc0. Please check the warnings at the end; only when both brackets are empty, there will be no crossing of temperature curves or too small temperature differences. The final plot is found in the results directory (results/last_T_H_dot_plot_orc.png), but also further data are stored there. The directory can be changed.

Helpers

Some helper functions, found at carbatpy\helpers Here for copying all results and the source py-file to a new directory.