Francesco Witte

Create __repr__ and __str__ methods for some classes to give the user a nice overview on printing

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- Units (show current defaults) - Component (show type, current specifications, result?!) - Connection (show type, current specifications, result?!) - Network (?) - OptimizationProblem (variables, objectives, ...)

Specifically these are - `set_defaults`: `_set_defaults` - `init_only` - just rename flag: `presolve_only` - add explicit method: `nw.presolve("design", init_path="...")` - `_init_set_properties`: something like `_impose_SI_values_for_specified_parameters` - `_init_properties`: `_guess_starting_values` - `_init_design`/`_init_offdesign`: `_prepare_...`...

It should be noted as part of the networks and fluid properties chapters.

Right now, the data for condensation and evaporation temperature have to be rectangular, meaning a grid is created over the range of condensation and evaporation temperature. Instead, it should be...

Right now it is not possible to specify, e.g. - the mass fraction of liquid phase in humid air to obtain the mixture temperature - or obtain the mixture contents...

Specifically: # Heat exchangers For the heat exchangers there should be an illustration of what the terminal temperature differences, UA/kA as well as pinch temperature difference refer to. The best...

Implement an alternative to pygmo

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pygmo requires conda on windows, I would prefer a pure pip variant. What can be done is to change the implementation of the `OptimizationProblem` slightly to be compatible with another...

In favor of new `Network.units` attribute