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Topic: Wet steam calculations  (Read 3892 times)

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Offline dist

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Wet steam calculations
« on: November 25, 2010, 01:47:20 PM »
If someone could help me out with this problem I'd really appreciate it. I'm going crazy trying to figure out how to go about attacking this problem.

Steam produced in a boiler is frequently “wet” – that is, it is a mist composed of saturated water vapor and entrained liquid droplets. The quality of a wet steam is defined as the fraction of the mixture by mass that is vapor.
A wet steam at pressure of 5.0 bar with a quality of 0.85 is isothermally “dried” by evaporating the entrained liquid. The flow rate of the dried steam is 52.5 m3/h.

a)
Use the steam tables to determine the temperature at which this operation occurs, the specific enthalpies of the wet and dry steams, and the total mass flow rate of the process stream.

b)
Calculate the heat input (kW) required for the evaporation process.

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