Steam enters an adiabatic turbine operating at steadystate with an enthalpy of 3251.0 kJ/kg and leaves asa saturated mixture at 15 kPa with quality (drynessfraction) 0.9. The enthalpies of the saturated liquidand vapour at 15 kPa are h = 225.94 kJ/kg andhg = 2598.3 kJ/kg respectively. The mass flow rateof steam is 10 kg/s. Kinetic and potential energychanges are negligible. The power output of theturbine in MW is

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Steam enters an adiabatic turbine o state with an enthalpy of 3251.0 kJ a saturated mixture at 15 kPa with fraction) 0.9. The enthalpies of the

Elements Of Electromagnetics

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ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Chemical and Phase Equilibrium

Phase diagrams or equilibrium phase diagrams are the graphical representations that show the phase transformations of the constituting elements with respect to the pressure, temperature, and compositions. The diagrams show the conditions that limit the different phases, namely solid, liquid, and gas. The diagram can also be utilized to verify the relations between the state variables. Most of the phase diagrams are temperature-pressure phase diagrams, with the variable parameter as the composition. Usually other variables such as solubility and pressure parameters are not indicated in the phase diagram. For a one-component system (unary phase diagram), the phase diagram is generally a function of temperature and pressure as the state variables, or temperature and volume. However, for a binary system (two-phase) having two components, the phase diagram is a function of temperature and composition as the state variables only. Coexisting of the different phases of the constituting elements is indicated in the phase diagram. A ternary phase diagram can be characterized by consisting of three phases in equilibrium.

Question

Steam enters an adiabatic turbine operating at steady
state with an enthalpy of 3251.0 kJ/kg and leaves as
a saturated mixture at 15 kPa with quality (dryness
fraction) 0.9. The enthalpies of the saturated liquid
and vapour at 15 kPa are h = 225.94 kJ/kg and
hg = 2598.3 kJ/kg respectively. The mass flow rate
of steam is 10 kg/s. Kinetic and potential energy
changes are negligible. The power output of the
turbine in MW is

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