Excellent project! That could be a very good tool to answer most noob questions seen around.
I think that the piping is not difficult to detail. Lots of people still use ¼ id hoses in long loops, with some tees and elbows in between (sure not this forum readers
), and that account for a big pressure drop. All the numbers for that are currently known and could be added easily. Sure there’s lot of cases where this is the biggest source of pd.