search

e2nIEE / pandapipes

A pipeflow calculation tool that complements pandapower in the simulation of multi energy grids
https://www.pandapipes.org
Other
145 stars 62 forks source link

Branch output: internal node temperature #495

Open dlohmeier opened 1 year ago

dlohmeier commented 1 year ago

Problem In some cases, a heat exchanger, but also any kind of other branch, is connected to an outlet junction that has more incoming flows than that just the one from the heat exchanger (cf. #494). However, it would be nice to also display the temperature at the outlet of the heat exchanger (not just the mixed temperature at the junction) for further processing.

Solution This result is hard to retrieve externally, but could probably quite simply be done within the component model itself. I think, we should add this result parameter to the result table and extract it during the simulation.

EDIT: This was shown on the example of a heat exchanger, but the same is true for a pipe. This way, it could look like a pipe is connected to an external heat source when considering the t_to_k result, but in fact there is just another stream to the same junction with a higher temperature.

dlohmeier commented 1 year ago

Maybe it would even make sense to drop t_from_k and t_to_k ( as they can be retrieved from the junction tables), and just create the parameters t_inlet and t_outlet, where t_inlet would usually equal t_from_k.

j-zipplies commented 2 months ago

Maybe it would even make sense to drop t_from_k and t_to_k ( as they can be retrieved from the junction tables), and just create the parameters t_inlet and t_outlet, where t_inlet would usually equal t_from_k.

This is exactly what I would expect as a user. This is also somewhat connected to #423 where exactly these temperatures (inlet and outlet, not mixing temperature at the junctions) would be needed to calculated / validate heat losses.

dlohmeier commented 2 months ago

We recently added this to our development agenda... I can't say exactly how long it takes, but we will probably deal with this in the near future.