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A pipeflow calculation tool that complements pandapower in the simulation of multi energy grids

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The latter would implement our internal naming convention correctly.

In some calculations (derivatives) we need certain fluid properties (i.e. state values) that could change with the propagation along a branch, but must be used to derive other values (e.g....

**Describe the bug** In case the connectivity check sets parts of the network out of service, flow controllers (and heat consumers) might prevail in the pit structure, even though connected...

enhancement

This PR rectifies the gas mixture compressiblity calculation and merges the changes from the master branch in the [kbensafta:gas_mixture_simon branch](https://github.com/kbensafta/pandapipes/tree/gas_mixture_simon) to make the latter pass the tests. The SRK method...

Maybe it would make sense to also add a junction loss coefficient, which considers changes of the flow direction at a junction.

enhancement

Inside of the component classes are class methods like table_name(), internal_node_name() or active_identifier() that return just one thing (e.g. the string "pipe") with no other functionality to the method itself....

I was wondering if there is a straightforward way of calculating the heat losses from the pipes after a pipeflow has been run. Issue #423 suggests that this is not...

I just came to realize that "loss_coefficient" is one of the pressure controller's input entries. However, I fail to see a need for this parameter. This parameter is usually used...

good first issue

**Describe the bug** When the geodata of a district heating grid is not set up with integers but with real geo coordinates (or small numbers in the range of 10^(-3),...

bug
good first issue

Added a standard type for heating pipes. The reason for this addition is, that in literature and industry the parameter for heat loss specified is predominantly U [W/mK] instead of...

heating