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2 phase LNG expander predictability on scaling up

2 phase LNG expander predictability on scaling up

2 phase LNG expander predictability on scaling up

(OP)
I am trying to size a 2 phase LNG expander and I have a question regarding CFD and testing. If we have a CFD model with a certain performance predictability compared with real test data, which are the main components that will change for a bigger size expander and that will affect that predictability (frictions losses etc..) ? could someone give me some suggestions on which will be the main factors that will change predictability for a bigger machine? thanks

RE: 2 phase LNG expander predictability on scaling up

(OP)
with reference to my question above, my understanding is that the following factors will be the most significant ones:

1) variations of Reynolds number
2) non-unidimensional flow
3) variations of mechanical and volumetric efficiency (the last would decrease I think with the increase of internal surface that iteract with the fluid)

I am assuming that predicability can be scaled up with a certain degree of approzimation near the max efficency point, but what about at lower flow?

RE: 2 phase LNG expander predictability on scaling up

giancarlosavini,

Perhaps you should start with ASME PTC 10...

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