A power station consists  of  a  four-unit  coal fired power  station,  having  a  combined  capacity  of  2,880  MW. The current efficiency of each unit is around 37.7%. You are asked to improve the thermal efficiency of each unit by lowering the condenser pressure. To simplify this task, assume that each  unit  operates on  a  simple  ideal  Rankine  cycle.  If  the  superheated  vapour  enters  the  turbine at 10 MPa and 500 ֯C and is cooled in the condenser at a lower pressure 10 kPa, determine the quality of the steam at the turbine exit and the thermal efficiency of the cycle for one unit.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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A power station consists  of  a  four-unit  coal fired power  station,  having  a  combined  capacity  of  2,880  MW. The current efficiency of each unit is around 37.7%. You are asked to improve the thermal efficiency of each unit by lowering the condenser pressure. To simplify this task, assume that each  unit  operates on  a  simple  ideal  Rankine  cycle.  If  the  superheated  vapour  enters  the  turbine at 10 MPa and 500 ֯C and is cooled in the condenser at a lower pressure 10 kPa, determine the quality of the steam at the turbine exit and the thermal efficiency of the cycle for one unit. 

 

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