Is there an isenthalpic change before and after the steam flow orifice plate? Why?

2008-01-31View Original

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Is there an isenthalpic change before and after the steam flow orifice plate? Why?

Reply #22008-03-28

The steam enthalpy remains unchanged before and after throttling.

Reply #32008-03-28

Derived from the law of conservation of energy: the sum of the kinetic energy and enthalpy of the fluid remains constant. Since the pipe cross-sections before and after the orifice plate are the same and the flow velocity remains roughly unchanged, the kinetic energy of the fluid changes very little after passing through the orifice plate, and thus its enthalpy also remains approximately constant. :lol

Reply #42008-03-30

The enthalpy remains unchanged before and after throttling, but the steam parameters decrease

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