Engineering, 30.08.2019 21:00 kadeWayne
Steam flows steadily into a turbine with a mass flow rate of 26 kg/s and a negligible velocity at 6 mpa and 600°c. the steam leaves the turbine at 0.5 mpa and 200°c with a velocity of 180 m/s. the rate of work done by the steam in the turbine is measured to be 20 mw. if the elevation change between the turbine inlet and exit is negligible, determine: (a) the rate of heat transfer associated with this process.
Answers: 2
![mh_{in}=m[h_{out}+\frac{V_{out}^2}{2}]+W_{out}+Q_{out}](/tpl/images/0212/9685/23290.png)
![Q_{out}=m[h_{in}-h_{out}-\frac{V_{out}^2}{2}]-W_{out} \\Q_{out}=26\frac{kg}{s}(3658.8\frac{kJ}{kg}-2855.8\frac{kJ}{kg}-\frac{(180\frac{m}{s})^2}{2} ) -20MW*\frac{1000kW}{1MW} \\Q_{out}=26\frac{kg}{s}(803\frac{kJ}{kg}-16200\frac{J}{kg}*\frac{1kJ}{1000J} ) -20000kW\\Q_{out}=456.8kW](/tpl/images/0212/9685/841b1.png)
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Steam flows steadily into a turbine with a mass flow rate of 26 kg/s and a negligible velocity at 6...
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