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Ahmed Medhat

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Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com Reversibility , Irreversibility, Entropy in pure substance , Entropy change. PT.03
Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com 𝛿𝑆𝑆𝑌𝑆𝑇𝐸𝑀 𝑂𝑝𝑒𝑛 𝑆𝑦𝑠𝑡𝑒𝑚 𝐶𝑙𝑜𝑠𝑒𝑑 𝑆𝑦𝑠𝑡𝑒𝑚 𝑆2 − 𝑆1 = ‫׬‬ 1 2 𝛿𝑄𝐻 𝑇 +𝛿𝑆𝑔𝑒𝑛 𝑆2 − 𝑆1 = ‫׬‬1 2 𝛿𝑄𝐻 𝑇 +𝛿𝑆𝑔𝑒𝑛 +𝛴𝑚˙in𝑆𝑖𝑛 − 𝛴𝑚˙0𝑢𝑡𝑆𝑜𝑢𝑡) Isentropic Process In systems Adiabatic Reversible isentropic
Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com ‫׬‬ 1 2 𝛿𝑄𝐻 𝑇 = 𝑑𝑆 න 1 2 𝑇 . 𝑑𝑆 = 𝛿𝑄𝐻
Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com 𝜼 = 𝒘𝒏𝒆𝒕 𝑸𝒊𝒏 𝜼 = 𝑸𝒊𝒏−𝑸𝟎𝒖𝒕 𝑸𝒊𝒏 ‫׬‬ 1 2 𝛿𝑄𝐻 𝑇 = 𝑑𝑆
Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com Adiabatic Efficiency 𝜂𝑇 = 𝐴𝑐𝑡𝑢𝑎𝑙 𝑊𝑜𝑟𝑘 𝐼𝑠𝑒𝑛𝑡𝑟𝑜𝑏𝑖𝑐 𝑊𝑜𝑟𝑘 𝜂𝑇 = 𝐼𝑠𝑒𝑛𝑡𝑟𝑜𝑏𝑖𝑐 𝑊𝑜𝑟𝑘 𝐴𝑐𝑡𝑢𝑎𝑙 𝑊𝑜𝑟𝑘 𝜂𝑇 = ℎ1 − ℎ2𝑎 ℎ1 − ℎ2𝑠 𝜂𝑇 = ℎ2𝑠 − ℎ1 ℎ2𝑎 − ℎ1
Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com Comment with your questions

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11.pdf

  • 1. Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com Reversibility , Irreversibility, Entropy in pure substance , Entropy change. PT.03
  • 2. Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com 𝛿𝑆𝑆𝑌𝑆𝑇𝐸𝑀 𝑂𝑝𝑒𝑛 𝑆𝑦𝑠𝑡𝑒𝑚 𝐶𝑙𝑜𝑠𝑒𝑑 𝑆𝑦𝑠𝑡𝑒𝑚 𝑆2 − 𝑆1 = ‫׬‬ 1 2 𝛿𝑄𝐻 𝑇 +𝛿𝑆𝑔𝑒𝑛 𝑆2 − 𝑆1 = ‫׬‬1 2 𝛿𝑄𝐻 𝑇 +𝛿𝑆𝑔𝑒𝑛 +𝛴𝑚˙in𝑆𝑖𝑛 − 𝛴𝑚˙0𝑢𝑡𝑆𝑜𝑢𝑡) Isentropic Process In systems Adiabatic Reversible isentropic
  • 3. Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com ‫׬‬ 1 2 𝛿𝑄𝐻 𝑇 = 𝑑𝑆 න 1 2 𝑇 . 𝑑𝑆 = 𝛿𝑄𝐻
  • 4. Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com 𝜼 = 𝒘𝒏𝒆𝒕 𝑸𝒊𝒏 𝜼 = 𝑸𝒊𝒏−𝑸𝟎𝒖𝒕 𝑸𝒊𝒏 ‫׬‬ 1 2 𝛿𝑄𝐻 𝑇 = 𝑑𝑆
  • 5. Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com Adiabatic Efficiency 𝜂𝑇 = 𝐴𝑐𝑡𝑢𝑎𝑙 𝑊𝑜𝑟𝑘 𝐼𝑠𝑒𝑛𝑡𝑟𝑜𝑏𝑖𝑐 𝑊𝑜𝑟𝑘 𝜂𝑇 = 𝐼𝑠𝑒𝑛𝑡𝑟𝑜𝑏𝑖𝑐 𝑊𝑜𝑟𝑘 𝐴𝑐𝑡𝑢𝑎𝑙 𝑊𝑜𝑟𝑘 𝜂𝑇 = ℎ1 − ℎ2𝑎 ℎ1 − ℎ2𝑠 𝜂𝑇 = ℎ2𝑠 − ℎ1 ℎ2𝑎 − ℎ1
  • 6. Ahmed Medhat - Thermodynamics 1 - ahmedhatfa@hotmail.com Comment with your questions