12 Combined Cycles - 1.pdf

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12 Vapour Power Cycles Bagian-1

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Transcript of 12 Combined Cycles - 1.pdf

  • 12Vapour Power Cycles

    Bagian-1

  • AM TM Unlam 2011 Termodinamika 2 2

    Rankine Cycle

    Siklus ideal untuk turbin uap

  • AM TM Unlam 2011 Termodinamika 2 3

    Rankine Cycle (lanj.)Proses-proses

    Analisis

  • AM TM Unlam 2011 Termodinamika 2 4

    Rankine Cycle (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 5

    Rankine Cycle (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 6

    Contoh 12.1

  • AM TM Unlam 2011 Termodinamika 2 7

    Contoh 12.1 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 8

    Contoh 12.1 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 9

    Contoh 12.1 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 10

    Siklus AktualPenyebab2 irreversibilities: fluid friction dan heat loss.Fluid friction menyebabkan pressure drop dicondenser, boiler, dan pipa2.Heat loss terjadi selama aliran uap air melaluiberbagai komponen.

  • AM TM Unlam 2011 Termodinamika 2 11

    Siklus Aktual (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 12

    Contoh 12.2

  • AM TM Unlam 2011 Termodinamika 2 13

    Contoh 12.2 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 14

    Contoh 12.2 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 15

    Peningkatan EfisiensiJadikan T saat heat addition setinggi-tingginya, dan T saat heat rejection serendah-rendahnya.Cara 1: Menurunkan tekanan condenser. Dapat meningkatkanpengembunan di stage akhir dari turbin.

  • AM TM Unlam 2011 Termodinamika 2 16

    Peningkatan Efisiensi (lanj.)Cara 2: Superheating. Dapat menurunkan pengembunan di stage akhir dari turbin. Temperatur superheating dibatasi oleh sifatmetalurgi material.

  • AM TM Unlam 2011 Termodinamika 2 17

    Peningkatan Efisiensi (lanj.)Cara 3: Menaikkan tekanan boiler. Dapat meningkatkanpengembunan di stage akhir dari turbin.

  • AM TM Unlam 2011 Termodinamika 2 18

    Contoh 12.3

  • AM TM Unlam 2011 Termodinamika 2 19

    Contoh 12.3 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 20

    Contoh 12.3 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 21

    Contoh 12.3 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 22

    Contoh 12.3 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 23

    Reheat Cycle

    Superheating sebelum memasuki turbin akanmenmbulkan masalah dari aspek metalurgi.Menggunakan 2-stage turbines + reheat dapat menjadisolusi praktikal.

  • AM TM Unlam 2011 Termodinamika 2 24

    Reheat Cycle (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 25

    Contoh 12.4

  • AM TM Unlam 2011 Termodinamika 2 26

    Contoh 12.4 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 27

    Contoh 12.4 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 28

    Contoh 12.4 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 29

    Contoh 12.4 (lanj.)

  • AM TM Unlam 2011 Termodinamika 2 30

    Contoh 12.4 (lanj.)


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