aplikasi neraca energi sistem terbuka
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AplikasiAplikasi NeracaNeraca EnergiEnergipadapada Volume Volume KontrolKontrol
Kuliah 9
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Nozzle dan Diffuser
� Nozzle: alat untukmenaikkan kecepatanfluida dengan caramenurunkan tekanannya
� Diffuser: alat untukmeningkatkan tekananfluida dengan caramengurangi kecepatannya
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Contoh
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Contoh
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Turbin dan Kompresor
� Blower, fan, kompresor: menaikkantekanan gas, membutuhkan power (kerjaporos)
� Pompa: menaikkan tekanan cairan� Turbin: menurunkan tekanan dan
menghasilkan kerja
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Kompresor
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Turbin
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Kuis
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Throttling Valve� Fungsi: memberikan penurunan
tekanan (pressure drop) kepadafluida yang mengalir
� Penurunan tekanan dalam throttling valve tidak menghasilkan kerja
� Dianggap bekerja secara adiabatis(Q=0), tidak menghasilkan kerja(W=0), hampir tidak ada perubahanenergi kinetik (∆Ek) dan energipotensial (∆Ep)
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Contoh
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Latihan
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Mixing Chamber
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Heat Exchanger
� Alat di mana 2 aliran fluida salingmenukar panas tanpa terjadipenncampuran
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Contoh
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Latihan
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Unsteady flow
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Contoh
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