RAHMAN, FAQIH ATARD (2025) SIMULASI DIRECT CONTACT CONDENSATION PADA AFTER CONDENSER DENGAN METODE CFD. S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.
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Abstract
Condenser is one of the heat exchanger devices used in Steam Power Plant (SPP) and Geothermal Power Plant (GPP). Condenser functions to convert hot steam into water for the next cycle. Condenser is divided into two types, namely direct contact condenser and indirect contact condenser. The advantages of direct contact condenser are that it can have a smaller shape, cheaper fabrication costs, and simple construction. The disadvantage of this type is the flow of steam and water that crosses each other, so it takes more than one condenser to condense the fluid perfectly. This study discusses the effect of differences in the mass flow rate of water entering the condenser on the effectiveness of the condenser and the effect of differences in steam inlet configuration on flow, heat transfer, and mass transfer behaviors during the condensation process. The effectiveness of the condenser for variations in the mass flow rate of water 60 kg/s is 17.0760%, for 74.16667 kg/s is 13.2763%, and for 90 kg/s is 13.9716%. Then the effect of differences in steam inlet configurations on flow, heat transfer, and mass transfer behaviors is that the hemi cylinder inlet tends to be superior to the full cylinder inlet. The spatial distribution of velocity, temperature, H2O steam, and partial pressure of H2S is more uniform. While in the full cylinder inlet these values are not uniform. The mass fraction of H2S is also concentrated at a certain point and causes its partial pressure to be high so it has a poor condensation rate.
| Item Type: | Thesis (S1) | ||||||
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| Additional Information: | Condenser merupakan salah satu alat heat exchanger yang digunakan pada Pembangkit Listrik Tenaga Uap (PLTU) dan Pembangkit Listrik Tenaga Panas Bumi (PLTP). Condenser berfungsi untuk mengubah uap panas menjadi air untuk siklus berikutnya. Condenser terbagi menjadi dua jenis yaitu kondensor kontak langsung (direct contact condenser) dan kondensor tidak kontak langsung (indirect contact condenser). Keunggulan direct contact condenser adalah dapat memiliki bentuk yang lebih kecil, biaya fabrikasi yang lebih murah, dan konstruksi yang sederhana. Kekurangan dari jenis ini adalah aliran uap dan air yang saling bersilangan, sehingga butuh lebih dari satu condenser untuk mengondensasi fluida secara sempurna. Penelitian ini membahas mengenai pengaruh perbedaan laju aliran massa air yang masuk ke dalam condenser terhadap efektivitas kondensor dan pengaruh perbedaan konfigurasi steam inlet terhadap flow, heat transfer, dan mass transfer behaviors selama proses kondensasi. Efektivitas kondensor untuk variasi laju aliran massa air 60 kg/s bernilai 17.0760%, untuk variasi 74.16667 kg/s bernilai 13.2763%, dan untuk variasi 90 kg/s bernilai 13.9716%. Kemudian pengaruh perbedaan konfigurasi steam inlet terhadap flow, heat transfer, dan mass transfer behaviors adalah hemi cylinder inlet cenderung lebih unggul dibandingkan full cylinder inlet. Distribusi spasial dari kecepatan, temperatur, H2O uap, dan tekanan parsial H2S bersifat lebih seragam. Sedangkan pada full cylinder inlet nilai-nilai tersebut tidak seragam. Fraksi massa H2S juga terkonsentrasi pada titik tertentu dan menyebabkan tekanan parsialnya tinggi dan memiliki laju kondensasi yang buruk. | ||||||
| Subjects: | T Technology > TJ Mechanical engineering and machinery | ||||||
| Divisions: | 03-Fakultas Teknik 03-Fakultas Teknik > 21201-Jurusan Teknik Mesin |
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| Depositing User: | Mr. Faqih Atard Rahman | ||||||
| Date Deposited: | 24 Jul 2025 02:18 | ||||||
| Last Modified: | 24 Jul 2025 02:18 | ||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/52550 |
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