I need to calculate the minor losses in a steam header. I have calculated the major friction losses. But I can't figure out how to find the minor losses since the header has multiple tappings and not all of them will be open at the same time. How can I find the head/pressure loss introduced due to these outlets?
Main header line size : 3 inches
Tapping line size 1 inch
No of taps/outlets = 8
Length of header : 0.9m with outlets evenly spaced but alternately at 90 degrees.
(the tappings are along 2 planes which are at 90 degrees to each other. 4 along one plane and 4 along the other plane and the tappings are placed alternatively in each plane. So the distance between 2 taps which are along the same plane = 0.2m)