Calculating pressure drop in steam line with saturated steam
Calculating pressure drop in steam line with saturated steam
(OP)
Hello,
I am trying to calculate the pressure drop in a series of pipes (bed tubes and wall tubes). The question I have is based on how to handle this when there is steam in the pipe.
If the water in the pipe is 50% steam by volume, that means for a given flow, the water must be traveling twice as fast as it would be if there was only water in the pipe.
Can I simply assume that all friction factors remain the same and do my calculations with the increased velocity? So for 50% steam my pressure drop would go up by a factor of 4.
Or can I use two friction factors, one for steam and one for water, and treat the problem in two pieces?
Any help would be appreciated.
thanks,
Andy
I am trying to calculate the pressure drop in a series of pipes (bed tubes and wall tubes). The question I have is based on how to handle this when there is steam in the pipe.
If the water in the pipe is 50% steam by volume, that means for a given flow, the water must be traveling twice as fast as it would be if there was only water in the pipe.
Can I simply assume that all friction factors remain the same and do my calculations with the increased velocity? So for 50% steam my pressure drop would go up by a factor of 4.
Or can I use two friction factors, one for steam and one for water, and treat the problem in two pieces?
Any help would be appreciated.
thanks,
Andy




