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All Journal Bionatura Bulletin of Scientific Contribution : Geology JSME MIPA UNIMA Jurnal Matematika & Sains JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) Neutrino Abdimas : Jurnal Pengabdian Kepada Masyarakat Charm Sains : Jurnal Pendidikan Fisika Bersatu: Jurnal Pendidikan Bhinneka Tunggal Ika Jurnal FisTa : Fisika dan Terapannya
Cyrke A N Bujung
Universitas Negeri Manado
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Physics Social Sciences

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Perbandingan Efisiensi Cooling Tower Unit 2 PLTP Lahendong Sebelum dan Sesudah Overhaul Fingki Astrika Kulo; Rolles Nixon Palilingan; Cyrke A. N. Bujung
Jurnal FisTa : Fisika dan Terapannya Vol 4 No 1 (2023): APRIL
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/fista.v4i1.239

Abstract

Geothermal Power Plant (PLTP) is a power plant that utilizes the heat generated by the bowels of the earth to produce electricity. efficiency is defined as the ratio between output and input in a process. Efficiency is one of the important equations in thermodynamics to determine how well the energy conversion or transfer process occurs. The research location of PLTP Lahendong unit 2 is located in Tondangow Village, South Tomohon District. This study aims to determine the comparison of the efficiency of cooling tower unit 2 before and after overhaul by processing data using the Ms. software application. Based on the results of the analysis, the efficiency value of the cooling tower of PLTP Lahendong Unit 2 before overhaul has an average value of 59% and the average value of cooling tower efficiency after overhaul is 63%. The magnitude of the efficiency comparison from the overhaul results in the average value of cooling tower efficiency increasing by 4%.
Distribusi Suhu Permukaan Tanah dan Hubungannya Indeks Vegetasi di Hutan Pinus Lahendong Novanda Tamboto; Cyrke Adfie Netty Bujung; Jeane Cornelda Rende
Jurnal FisTa : Fisika dan Terapannya Vol 4 No 2 (2023): OKTOBER
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/fista.v4i2.287

Abstract

Pine Forest is a mountain located in North Sulawesi Province, Indonesia. The surface temperature around the Pine Forest changes from year to year. Whether the changes occurred significantly or only slightly, it certainly had an effect on the vegetation around the mountain. The purpose of this study was to determine the surface temperature and vegetation in the geothermal manifestation area around the Pine Forest based on the Remote Sensing Method. By using remote sensing can calculate the vegetation and surface temperature in the Pine Forest. In this study, the analysis uses Landsat 8 satellite imagery in 2020. According to the results, vegetation is negatively correlated with surface temperature, which means that vegetation and surface temperature are inversely correlated. The higher the vegetation, the lower the surface temperature value and vice versa, the higher the surface temperature, the lower the vegetation index.
Karakteristik Fluida Mata Air Panas Desa Kasuratan Kabupaten Minahasa menggunakan Spektroskopi Spektrofotometer dan FTIR Omie Jawongkay; Donny Royke Wenas; Noldy Pulingkareng; Selfie Tumbel; Budi Mena; Cyrke Bujung
Jurnal FisTa : Fisika dan Terapannya Vol 4 No 2 (2023): OKTOBER
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/fista.v4i2.288

Abstract

Indonesia has a geothermal energy potential of around 40 percent of the world's total geothermal energy, placing Indonesia as one of the countries rich in geothermal energy potential. North Sulawesi Province is one of the provinces in Indonesia that has geothermal potential. This research aims to determine the characteristics of hot spring fluids in Kasuratan Satu Village, Minahasa Regency using a spectrophotometer and FTIR. The method used is a geochemical method to study the characteristics of hot spring fluids and FTIR characterization. The results of the research show that the fluid characteristic of the hot spring manifestation in Kasuratan Satu Village is sulfate water (SO4), this is by FTIR measurements.
Pengaruh Tekanan Vakum Dan Perubahan Suhu Air Terhadap Efektivitas Main Condenser Di PLTP Lahendong Unit 2 Efrem Jesky Arruan; Cyrke Bujung; Jeferson Polii
Neutrino Vol 6 No 1 (2023)
Publisher : Publikasi dan UKI Press UKI Toraja.

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pembangkit Listrik Tenaga Panas Bumi adalah salah satu usaha untuk memenuhi kebutuhan Energi listrik. Dengan kemajuan teknologi dan industri yang menyebabkan penggunaan listrik semakin meningkat.Kondenser adalah salah satu komponen utama pada PLTP yang Efektivitas kerjanya harus terus dijaga. Tujuan dari penelitian ini adalah untuk mengetahui bagaimana pengaruh tekanan vakum dan perubahan suhu air terhadap efektivitas main condenser. Metode yang digunakan dalam penelitian ini adalah metode penelitian kuantitatif. Dengan teknik pengumpulan data melalui data teknis yang dilakukan dengan cara pengamatan langsung dan melalui metode literatur dimana data diperoleh dari buku design. Hasil penelitian ini menunjukan pengaruh tekanan vakum dan perubahan suhu air tehadap efektivitas main condenser dimana semakin naik nilai tekanan vakum maka keefektivan main condenserakan semakin meningkat dan beda temperatur air yang meningkat juga akan meningkatkan  keefektivan suatu main condenser. Perhitungan yang digunakan adalah unjuk efektivitas kondenser.
Analisis Seismisitas Di Sulawesi Utara Berdasarkan Data Gempa Bumi Tahun 2018-2022 Rut Seriaty; Armstrong Sompotan; Cyrke A. N. Bujung
Bersatu: Jurnal Pendidikan Bhinneka Tunggal Ika Vol 2 No 2 (2024): Maret : Jurnal Pendidikan Bhinneka Tunggal Ika
Publisher : LPPM Politeknik Pratama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/bersatu.v2i2.622

Abstract

The objective of this study is to assess the seismic activity and brittleness of rocks, as well as the level of risk associated with natural disasters in North Sulawesi. The earthquake data utilized is derived from secondary sources spanning the years 2018 to 2022, specifically received from the Manado Geophysical Station. The data processing encompasses many criteria such as locations, magnitude, depth, and time of occurrence. The Guttenberg-Richter approach yields a seismicity level ranging from 4.121 to 5.589, while the rock fragility falls within the range of 0.98 to 1.072. The Talaud Islands Regency has the highest level of seismicity, measured at 5,589, while the East Bolaang Mongondow Regency has the lowest level, measured at 4,121. The Talaud Islands Regency region has the highest degree of rock fragility, measured at a value of 1.072, while the North Bolaang Mongondow Regency area demonstrates the lowest amount of rock fragility, measured at a value of 0.98. The Talaud Islands have the most significant earthquake risk, whereas the areas with the least danger include Minahasa, Sangihe Islands, Siau Tagulandang Biaro, Manado, Bitung, Tomohon, Kotamobagu, Southeast Minahasa, South Minahasa, and North Minahasa.
DELINEASI RESERVOIR PANAS BUMI BERDASARKAN LITOLOGI, ALTERASI HIDROTERMAL DAN PROFIL TEMPERATUR -, Cyrke A.N. Bujung; -, Alamta Singarimbun; -, Dicky Muslim; -, Febri Hirnawan; -, Adjat Sudradjat
Bulletin of Scientific Contribution Vol 8, No 3 (2010): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (543.739 KB) | DOI: 10.24198/bsc.v8i3.8254

Abstract

This study aims to delineate the breadth and depth of the geothermal reservoir and the resulting temperature. The method used is a compilation of lithology, alteration and the temperature profile that is supported by literature references and well data. Delinasi prospect area and deep reservoir of data viewed by lithology, alteration and the temperature profile. Regional prospects in the region of 2000C or more temperatures are also characterized by the presence of epidote minerals and are on lava and pyroclastic stratigraphy perselingan. The results obtained two different reservoir sites, the first located at depths of 800-1300 m above sea level and an area reached 1.37 x 107 m2., While the second is located at a depth (900 m - bottom) and an area of more than 3, 38 x 106 m2. Based on the temperature profile, the type of prospect geothermal reservoir in this area is the type of dominance of steam. .
Perbandingan Stabilitas Atmosfer di Permukaan Manifestasi Panas Bumi dengan Tanpa Manifestasi Panas Bumi menggunakan Bilangan Richardson Andreas Panjaitan; Rolles Nixon Palilingan; Cyrke Adfie Netty Bujung; Sixtus Iwan Umboh
Jurnal FisTa : Fisika dan Terapannya Vol 5 No 1 (2024): APRIL
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/fista.v5i1.342

Abstract

The stability of the atmosphere can affect the weather conditions in an area. This study aims to compare atmospheric stability carried out in Lake Linow which has two surfaces, namely the surface of geothermal manifestation and the surface without geothermal manifestation. In determining the stability of the atmosphere, researchers use the Richardson number method. To determine atmospheric stability using the Richardson number, data on wind speed and temperature at each altitude are needed. The measured height is 2 meters and 4 meters from the surface. The results of this study show that on the surface geothermal manifestations have unstable atmospheric stability with Richardson numbers -1.4729 to -0.1420, while on the surface without geothermal manifestations have 3 states of atmospheric stability, namely: stable, neutral, and unstable, with Richardson numbers -1.1316 to 0.9808. Therefore, it can be concluded that the state of the atmosphere on the surface of geothermal manifestations is more unstable, compared to surfaces without geothermal manifestations.
Karakteristik Kimia Fisik Fluida Mata Air Panas dan Estimasi Temperatur Reservoir di Sekitar Rano Raindang Desa Leilem, Kecamatan Sonder, Kabupaten Minahasa Asmaul Husna S; Royke Donny Wenas; Cyrke Adfie Netty Bujung; Sixtus Iwan Umboh
Jurnal FisTa : Fisika dan Terapannya Vol 5 No 1 (2024): APRIL
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/fista.v5i1.343

Abstract

To meet future energy needs, the Indonesian government has developed alternative energy sources: geothermal energy. Rano Raindang is one of the areas with a geothermal field due to several geothermal manifestations, such as hot springs. This study aims to examine the fluid type, the reservoir temperature estimation, and the functional group of hot springs. The method used is a geoindicator of Na, K, Mg, Cl, SO4, and HCO3, combining spectrophotometry and FTIR spectroscopy. Research results show that the type of hot spring fluid around Rano Raindang with geoindicators Na, K, Mg is immature waters, this is because the type of hot spring fluid around Rano Raindang has undergone a mixing process, while the geoindicators Cl, SO4, HCO3 are bicarbonate (HCO3) types. This corresponds to the results of measurements using FTIR spectroscopy. The estimated reservoir temperature in the area is 193.66 °C and is included in the medium-temperature geothermal system, as the temperature around Rano Raindang is between 125–225 °C. The functional group of hot spring molecules around Rano Raindang has functional groups C=O and O-H.
Analisis Keberadaan Manifestasi Panas Bumi Terhadap Keseimbangan Lingkungan Sekitar Desa Talawaan Bantik Angelika Kristi Nilahi; Cyrke Adfie Netty Bujung; Jeilen Gabriela Nikita Nusa; Alfrie Musa Rampengan
Jurnal FisTa : Fisika dan Terapannya Vol 5 No 2 (2024): OKTOBER
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/fista.v5i2.356

Abstract

Energy is very important for humans, apart from that the environment also has the same important role, in other words energy and the environment are inseparably linked. This research aims to see the differences in the chemical content and physical properties of geothermal manifestation water and residents’ well water, as well as to find outh whether the manifestation water content affects local residents’ well water. The research samples consisted of hot springs and local well water, where the physical and chemical properties observed were: Temperature, pH, DHL, CL, Fe, H2S,SO4. The results of measurement and sample testing obtained were then analyzed descriptively. The result obtained from this research are that for the physical properties and chemical content of Cl, Fe, H2S, and SO4 there is not much difference in the content analysis results, while for the DHL, Temperature and pH values there are quite large differences, but still is below the standard value for clen water quality.
Pemanfaatan Karbon Aktif dari Cangkang Kemiri sebagai Elektroda Superkapasitor Kawulur, Kezia; Taunaumang, Heindrich; Umboh, Sixtus Iwan; Bujung, Cyrke Adfie Netty; Kamaruddin
Jurnal FisTa : Fisika dan Terapannya Vol 6 No 2 (2025): OKTOBER
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/fista.v6i2.475

Abstract

The energy crisis is one of the major challenges facing the world today, triggered by over-reliance on fossil energy sources, rapid population growth, and the threat of climate change. One technology that attracts attention is supercapacitors. The purpose of this study was to determine the effect of carbon activation using KOH with varying concentrations on electrical conductivity as a supercapacitor electrode. By using dehydration method, carbonization at 500℃. The chemical activation process is treated with variations in KOH concentration of 6M, 7M, 8M with physical activation in a furnace at 750℃. The test results of conductivity and density values show that the comparison with the increase in KOH concentration results in an increase in conductivity of 0.1012 S/m, 0.1694 S/m, and 0.3282 S/m. Accompanied by a decrease in density of 9.8810 A/
Co-Authors Adjat Sudradjat - Adjat Sudradjat -, Adjat Sudradjat Adjat Sudrajat Alamta Singaribun Alamta Singarimbun Alamta Singarimbun -, Alamta Singarimbun Alfrie Musa Rampengan Almasih Mayumi Rontos Andreas Panjaitan Angelika Kristi Nilahi Angely Syuly Ratag Armstrong F. Sompotan Asmaul Husna S Aswin Hermanus Mondolang Bethrany F. Landung Budi Mena Dicky Muslim Donny Royke Wenas Drili Lidya Cintana Meruntu Efrem Jesky Arruan Entjaurau, Seplin Farly Reynol Tumimomor Fatihin, Riva Choerul Febri Hirnawan Febri Hirnawan - Febri Hirnawan -, Febri Hirnawan Ferdy Dungus Fingki Astrika Kulo Ginevra Dagna Clarissa Gregorius Siga Heindrich Taunaumang Herry Manik Iwan Sixtus Umboh Jeane V. Tumangkeng Jeferson Polii Jeilen Gabriela Nikita Nusa Jeisi Meilita Walangitan Jonathan J. Wuisan Kamaruddin Kamaruddin Kawulur, Kezia Lubis, Muhammad Rizky Marcelino Datunsolang Noldy Pulingkareng Novanda Tamboto Omie Jawongkay Patricia Mardiana Silangen Rende, Jeane Cornelda Ridel Raturandang Rolles Nixon Palilingan Rut Seriaty Satyano W Mongan Selfie Tumbel Sixtus I. Umboh Tineke Makahinda Tumimomor, Farly R Vincensius Jamlean Yasin, Kartika Constantia Yosua Walewangko