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All Journal Spektra: Jurnal Fisika dan Aplikasinya PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Renie Adinda Pitalokha
Prodi Fisika FMIPA Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km. 21, Jatinangor 45363
Aerospace Engineering Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics Other

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MODEL PEMBANGKIT LISTRIK TENAGA PANAS BUMI SISTEM HYBRID FLASH-BINARY DENGAN MEMANFAATKAN PANAS TERBUANG DARI BRINE HASIL FLASHING Muhamad Ridwan Hamdani; Cukup Mulyana; Renie Adinda Pitalokha; Fajar Muhammad
Spektra: Jurnal Fisika dan Aplikasinya Vol 1 No 2 (2016): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 1 Nomor 2, Desember 2016
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (872.898 KB) | DOI: 10.21009/SPEKTRA.012.03

Abstract

Abstrak Potensi panas bumi di Indonesia sangat melimpah, yaitu terdapat 256 prospek dengan potensi sekitar 28.617 MW. Sumber panas bumi di Indonesia merupakan sumber dengan sistem hydrothermal yang didominasi oleh jenis dominasi air, dengan karakteristik sekitar 20% uap dan 80% air. Jenis pembangkit di Indonesia yang digunakan untuk memanfaatkan sumber dominasi air ini adalah sistem single-flash. Brine hasil flashing dari sistem ini masih memiliki temperatur yang tinggi sehingga masih bisa digunakan sebagai sumber energi baru, yaitu dengan diflash ulang maupun digunakan sebagai sumber pemanas pada sistem binary cycle. Oleh karena itu, dibuatlah model pembangkit listrik tenaga panas bumi sistem hybrid flash-binary untuk memanfaatkan brine hasil flashing sehingga diperoleh daya yang lebih besar. Pada penelitian ini digunakan software HYSYS 7.0 dalam pembuatan modelnya dan dibuktikan dengan perhitungan termodinamik pada setiap bagiannya. Pada penelitian ini telah dibuat model pembangkit listrik tenaga panas bumi yang menghasilkan total daya 279,178 MW dan penambahan daya 32,91% tanpa harus membuat sumur produksi baru. Kata-kata kunci: flashing, binary cycle, HYSYS 7.0, hybrid flash-binary Abstract Indonesia has a great number of geothermal sources, there are 256 prospects with 28,617MW potential power. The sources is dominated by hydrothermal system that usually has 20% vapor and 80% liquid. The power plant that appropriate to used is single-flash system. In this system, the brine which has a great number of enthalpy is reinjected to reservoir. This research was performed to design the hybrid flash-binary system power plant model by utilizing the wasted brine to gain the greater power. HYSYS 7.0 was used to made the model and based on the fundamental thermodynamic principles energy and mass conservation calculation in every single part of the plant. The hybrid flash-binary system model was made and resulted additional power 32.91% with 279.178MW total power without drilling the new production well. Keywords: flashing, binary cycle, hybrid flash-binary, HYSYS 7.0
INSPEKSI CACAT (DISKONTINUITAS) PADA MATERIAL DENGAN MENGGUNAKAN UJI ULTRASONIK DAN UJI RADIOGRAFI Renie Adinda Pitalokha; Cukup Mulyana; Muhamad Ridwan Hamdani; Fajar Muhammad
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (882.08 KB) | DOI: 10.21009/0305020206

Abstract

Defect (discontinuity) in the material can be caused by the damage of microscopic or macroscopic structure of material and can’t be visually inspected. Non-destructive testing is one of material testing without destruct the material, so it can act as quality control which defect of material can be detected. One of the method used in radiography testing uses x-ray as defect detector and showing the result in negative film or computer. Whereas the principle of ultrasonic testing uses audible wave with high frequencies to find out the characteristics of defect. Ultrasonic testing have been developed into phased array ultrasonic testing and long range ultrasonic testing. This research will compare both of ultrasonic testing and radiography testing from the principle, proccess, capabilities, and limitations. Long range ultrasonic testing have capablity to determine the location of defect. Phased array ultrasonic test have capablity to detect the type of defect from small defect to small material, while x-ray radiograph testing can indentify type and shape of the defect. These methods were not showing which one the best is, but they were complete each other. Keywords: ultrasonic testing, radiography testing, x-ray, non-destructive testing.
Co-Authors Cukup Mulyana Fajar Muhammad Muhamad Ridwan Hamdani