Answer:
a) , b) , c)
Explanation:
a) The turbine is modelled by means of the First Principle of Thermodynamics. Changes in kinetic and potential energy are negligible.
The mass flow rate is:
According to property water tables, specific enthalpies and entropies are:
State 1 - Superheated steam
State 2s - Liquid-Vapor Mixture
The isentropic efficiency is given by the following expression:
The real specific enthalpy at outlet is:
State 2 - Superheated Vapor
The mass flow rate is:
b) The temperature at the turbine exit is:
c) The rate of entropy generation is determined by means of the Second Law of Thermodynamics: