steam rankine cycle..

Replies

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  khaled hamza

  -I am Khaled Hamza , I work at power plant which produce electricity about 350MW
  -I want to add something to your words , that the main steam which comes from boiler is about ( 170 barg ) turns the turbine blades especially ( High Pressure Turbine blades ) , then the HP turbine Exhaust Steam is about ( 35 barg ) goes to the boiler again to produce ( hot reheat steam ) , hot reheat steam is back again to the turbine ( Intermediate Turbine Blades).
  -After that Steam goes to the ( Low pressure Turbine Blades , then the remaining steam is exhausted to the condenser to be condensate water by cooled water circulation at Condenser.
  -I will attach a figure which describe the above process , and a link to an article about this process.
  
  
  
  
  
  
  

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  Electricity , Power generation ,Thermal power plant , Solar Energy , Generators , Green Energy: { BOILER AND TURBINE } CONTROL MODES

• 

  Amith Gupta

  i guess its because the steam needs to have a good dryness fraction before it is passed through turbine. Might be that wet steam corrodes the blades..
• 

  ISHAN TOPRE

  @Amith :that's true .The dryness fraction needs to be greater than 0.85 else it will corrode the blades.
  @Khaled:Khaled ,I have seen notes which you contributed to CE they are nicely written and contains all necessary information which a person workking at powerplant needs to know...
  Thanks for that.Also can you confirm if you think what I posted to vvishwaskumar is correct or not,for my personal knowledge of course :smile:
• 

  Ankush Sharma

  dear the main reason behind it is, if we again want to use the steam in turbine then we have to give all the work obtained from the turbine to the compressor in order to compress the steam to increase the specific volume before using it in turbine. in actual, we have to give more work as compared to turbine work to the compressor.
  
  and if struck in your mind that why we use compressor in order to do that? then the reason is that if we directly use the steam in turbine without compressing then we get less work as work output for steam flow is
  W=-(vdp) integrating from 1 to 2. so, larger the "v" using compressor we get larger work.
  
  i hope its clear to you, if any doubt feel free to ask...