pdf: http://www.ipt.ntnu.no/~stanko/files/Courses/TPG4230/2021/Notes/10.pdf
There are two errors in this video:
-The dry gas tubing equation written at 03:20 is missing the flow coefficient Ct (see the notes).
-The expression written at 06:54 is wrong, pwh3 is greater than pwh1 (see the notes)