Turboexpander and method foe using moveable inlet guide...

Details Turboexpander and method foe using moveable inlet guide... Turboexpander and method foe using moveable inlet guide...

F - Mech Eng,Light,Heat,Weapons

25

B

F25B 49/02 (2006.01) F25B 9/06 (2006.01)

Patent

CA 2742562

A turboexpander-compressor system includes an expander configured to expand an incoming gas, a first set of moveable inlet guide vanes configured to control a pressure of the incoming gas, a compressor configured to compress a gas received from the expander, a shaft configured to support and rotate an expander impeller and a compressor impeller, a second set of moveable inlet guide vanes attached to the compressor and configured to control a pressure of the gas input into the compressor, and a controller configured to acquire information about a rotating speed of the shaft, a pressure and a temperature of the incoming gas, a pressure and a temperature of the gas output from the expander, and to control the second set of moveable inlet guide vanes to maximize a ratio between the rotating speed of the shaft and a drop of an enthalpy across the expander, in off-design conditions.

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