The whys of Combined Cycle power plants

[boudzmawed]

hi every1 ,
I'm trying to do the concept of a turbosteamer that the bmw is workking on but I'm facing few problems :
the flow rate of water will be 9 ml/s and of pressure 6 bars . based on htri xchanger program , the best design of my shell and tube heat xchanger will be of 22 cm diameter and 6.4 mm tube diameter where number of tubes will be 215 and the length will be around 0.5 meters.

my problem is how to allow this very low flow rater ( 9 ml/s) enter the 215 tubes equally ?

my 2nd problems is that i have no experience with microturbines , i need to know how to design that turbine, ihope you can help guys

thank you

 

[Pkruse]

This thread on gas turbines has pretty well run its course. I suggest you open a new thread on steam turbines, & maybe one on heat exchanges. Both of your questions are interesting.

 

[boudzmawed]

hehe we can just open it here :)

 

[Charles123]

This thread gained life of its own!

 

[AlephZero]

But DOD is demanding & getting much longer overhaul intervals.

They are slowly (but slowly) getting more rational about their specifications, as well.

Time was when the engine specification for a military aircraft said very little except "the engines will operate normally over the full performance envelope of the aircraft". If the engine designer phoned somebody in the air force to try to undertand this better (this was in the era before email), the standard answer was "but we won't know what the performance envelope will be until we have flown the prototype". Face-palm...