A steam plant operates on a thermodynamic cycle based on two isobaric processes and two isentropic processes. Pure water enters the plant at a rate of 10 kg s' at 80 bar and the saturation temperature. It is isobarically heated to 550 °C and then isentropically expanded through a turbine to 0.5 bar. It is then cooled to the same entropy as the inlet water before being compressed back to the inlet conditions. Calculate the following by using a steam table.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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the thermal efficincy is 40.1%

 

4. A steam plant operates on a thermodynamic cycle based on two isobaric processes
and two isentropic processes. Pure water enters the plant at a rate of 10 kg s' at
80 bar and the saturation temperature. It is isobarically heated to 550 °C and then
isentropically expanded through a turbine to 0.5 bar. It is then cooled to the same
entropy as the inlet water before being compressed back to the inlet conditions.
Calculate the following by using a steam table.
(a) The steam state and properties after each process;
(b) the heat transfer rates;
(c) the network transferred;
(d) the process thermal efficiency.
(e) Calculate the possible thermodynamic efficiency of such a power generation
cycle with the furnace operation condition fixed. Comment on the efficiency and
practicality of the power generation cycle.
Transcribed Image Text:4. A steam plant operates on a thermodynamic cycle based on two isobaric processes and two isentropic processes. Pure water enters the plant at a rate of 10 kg s' at 80 bar and the saturation temperature. It is isobarically heated to 550 °C and then isentropically expanded through a turbine to 0.5 bar. It is then cooled to the same entropy as the inlet water before being compressed back to the inlet conditions. Calculate the following by using a steam table. (a) The steam state and properties after each process; (b) the heat transfer rates; (c) the network transferred; (d) the process thermal efficiency. (e) Calculate the possible thermodynamic efficiency of such a power generation cycle with the furnace operation condition fixed. Comment on the efficiency and practicality of the power generation cycle.
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