Article Per Year (5 Year)
p-Index From 2021 - 2026
4.408
P-Index
This Author published in this journals
All Journal Jurnal MIPA Neutrino Fullerene Journal of Chemistry SOSCIED Charm Sains : Jurnal Pendidikan Fisika Jurnal FisTa : Fisika dan Terapannya
Jeferson Polii
Universitas Negeri Manado
Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Mathematics Physics Social Sciences

Published : 35 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 35 Documents
Search

 1   2   3   4 
ANALISIS TERJADINYA SCALING SILICA PADA CONDENSER DAN COOLING TOWER Priskilla Wulandari Polimpung; Heinrich Taunaumang; Jeferson Polii
Jurnal FisTa : Fisika dan Terapannya Vol 2 No 1 (2021): 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.v2i1.104

Abstract

Silica scaling in geothermal production fields can clog the fluid flow rate. Research has been conducted to determine the occurrence of scaling sillica in brine. The method used in processing this data is by using an application in the form of steam tables and Microsoft Excel. Therefore, a study of the potential for silica scaling in activities that utilize geothermal energy is needed. In this study, a study on the potential for silica scaling in a geothermal power plant in the Lahendong area unit 2 cluster 13.The purpose of this study was to estimate the possibility of scaling silica in the condenser and cooling tower in the geothermal field. After the research was carried out, it could be concluded that the results of the calculation of scaling sillica in the Lahendong geothermal field were the condenser at 11.2 ppm while cooling tower was 72.5 ppm. When silica concentration in this field is compared with the calculated silica concentration, the silica will not settle in the condenser or the cooling tower.This is because the silica concentration in the field is smaller than the calculated silica concentration, so there is no silica scaling at the inlet or outlet of condenser and cooling tower.
ANALISA PERBANDINGAN PRESSURE DROP METODE LOCKHART MARTINELLI, HOMOGENOUS DAN HARRISTON FREESTON DARI DEMISTER KE TURBIN PADA UNIT 2 PLPT LAHENDONG Rigitha Petrisia Raco; Rolles Nixon Palilingan; Jeferson Polii
Jurnal FisTa : Fisika dan Terapannya Vol 2 No 1 (2021): 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.v2i1.105

Abstract

The development of technology, population and inovation from day to day is increasing. This causes the world's energy needs to increase as well. This causes both developed and developing countries including Indonesia to take advantage of every alternative available energy resource, both renewable energy and non-renewable energy. One of the uses of renewable energy for national energy sufficiency is geothermal resources, Indonesia's strategic location causes Indonesia to have a lot of potential geothermal resources and because of that these geothermal resources must be processed as efficiently as possible to help meet national energy needs. One of the causes of the reduction in the efficiency of processing geothermal resources is the pressure drop that occurs from the demister to the turbine, this study aims to determine the pressure drop that occurs from the demister to the turbine at PLTP-2 Lahendong using 3 methods, namely Lockhart Martinelli, Homogenous and Harrison Freeston. . The results of the calculation of these 3 methods are then compared with real data in the field to find out which method is the most aaccurate and closest to use. Based on research, the turbine inlet pressure from the Homogenous method, Lockhart Martinelli and Harisson Freeston are 6.59bar, 7.25bar and 7.84 bar respectively and the level of accuracy compared to real data is 92%, 97% and 90%, respectively.
ANALISIS EKSERGI DAN OPTIMASI PEMBANGKIT LISTRIK TENAGA PANAS BUMI LAHENDONG UNIT-2 Armando Ariakta Aloanis; Heindrich Taunaumang; Alfrie Rampengan; Jeferson Polii
Jurnal FisTa : Fisika dan Terapannya Vol 2 No 2 (2021): 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.v2i2.131

Abstract

Geothermal development is carried out by increasing the efficiency of existing generators. In this study, geothermal development at the Lahendong Unit-2 geothermal power plant is carried out by conducting exergy analysis and optimizing geothermal plant efficiency using a genetic algorithm by adjusting the pressure on the separator. Exergy calculations and optimization of genetic algorithms, using the Python programming language with the help of libraries such as PyXSteam, Pandas, Numpy, matplotlib, random, and time. Exergy flow and efficiency are calculated on the components of the separator, turbine, condenser, cooling tower, and the entire plant. The amount of exergy that enters the generator from geothermal fluids is 28882.73 kW. The amount of exergy that comes in produces an output power of 13,000 kW with an overall efficiency of the generator is 45.010%, and the amount of exergy from brine is 1794.11 kW. Optimization using the genetic algorithm method produces the most optimal output power value of 13035,480445 kW at a separator pressure of 10.4025 bar. The increased quality of the steam generates this increase in power so that the mass flow rate of the steam that rotates the turbine becomes more than before.
ANALISA TIPE FLUIDA MANIFESTASI PANASBUMI MENGGUNAKAN DIAGRAM TRILINIER CL-SO4-HCO3 DI DESA BAKAN KECAMATAN LOLAYAN KABUPATEN BOLAANG MONGONDOW Aslam Rais; Heindrich Taunaumang; Jeferson Polii
Jurnal FisTa : Fisika dan Terapannya Vol 2 No 2 (2021): 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.v2i2.132

Abstract

Indonesia is an area that could potentially be the source of the power of nature, including the source of power geothermal (geothermal). This is because Indonesia is a country located in the area of the world's ring of fire, where the tectonic plate stretches from the tip of the island of Sumatra, Java, to the Bandang Maluku area. Wrong one area in North Sulawesi, which has manifestations of geothermal, namely the village Bakan, the District Lolayan, District Bolaang Mongondow. In areas that are manifestations of geothermal eyes water hot. With the presence of one of the manifestations that the area that there is a potential for geothermal. Methods have used that method of geochemical and retrieval of data physical and samples of water hot in the field and then do the analysis laboratory on samples that. Based on the results of the research content of ions Cl, SO4 and HCO3 in a sample of water in the village Bakan which has been analyzed and the results of the calculation of the percentage of each ion that has been plotted into the diagram ternary showed that samples of water in the village Bakan is water sulfate (SO4), with the temperature manifestations 78 and the air temperature of 26 and pH showed value between 5 and 6 which means that the nature of the manifestations that are acidic due to having a pH less than 7.
ANALISIS SIFAT KIMIA FISIK FLUIDA DAN ESTIMASI TEMPERATUR RESERVOIR DI DAERAH MANIFESTASI PANAS BUMI BAKAN BOLAANG MONGONDOW Marcelino Datunsolang; Cyrke Bujung; Jeferson Polii
Jurnal FisTa : Fisika dan Terapannya Vol 2 No 2 (2021): 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.v2i2.140

Abstract

Bolaang Mongondow is an area that has an active volcano, namely the Ambang volcano, which is located in the village of Bakan. The existence of hot spring manifestations that appear indicates the potential for geothermal energy in the area. However, until now, geothermal potential in the area has not been developed due to a lack of knowledge about determining geothermal potential. For this reason, research on reservoir characteristics such as fluid type and reservoir temperature estimation is carried out. The method used in this research is the geochemical analysis of the fluid in the form of the percentage of fluid content and the calculation of the geothermometer. Fluid type analysis was determined based on plotting on ternary Na-K-Mg diagrams. While the reservoir temperature estimation is determined using the Na-K geothermometer equation. From the physical-chemical analysis of fluids in Bakan hot springs, it was found that the type of fluid in the Bakan area was immature water. Based on the estimated reservoir temperature calculation using a Na-K Geothermometer, the subsurface temperature ranges from 235 ℃ - 242 ℃ and includes a High-temperature reservoir.
Karakteristik Fluida Panas Bumi Menggunakan Geoindikator Cl-Li-B di Daerah Desa Bakan Musa Salvador Arikalang; Rolles Nixon Palilingan; Jeferson Polii
Jurnal FisTa : Fisika dan Terapannya Vol 3 No 1 (2022): 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.v3i1.165

Abstract

Geothermal is a natural heat resource that comes from the interaction between hot rock and water. The results of these interactions are trapped in a place called a geothermal reservoir. North Sulawesi is an area that has geothermal potential, one of which is in Bakan, Bolaang Mongondow, geothermal potential here is a manifestation of hot springs. The purpose of this study was to determine the characteristics of geothermal fluids in the Bakan Village area, using the Cl-Li-B geoindicator method. The use of the Cl-Li-B geoindicator results in Cl being more dominant than Li and B indicating that hot water coming from a heat source that rises to the surface is a fluid originating from a heat source with little cooling, a low B/Li ratio indicates that the fluid zoning is in the upflow zone.
Analisis Karakteristik Fluida dan Temperatur Reservoir Dengan Menggunakan Diagram Ternary Cl-Li-B Pada Manifestasi Panas Bumi Di Desa Kaleosan, Minahasa Utara Ravael Ratumbuysang; Armstrong Sompotan; Jeferson Polii
Jurnal FisTa : Fisika dan Terapannya Vol 3 No 1 (2022): 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.v3i1.166

Abstract

Research on determining the fluid and temperature of the geothermal reservoir in Kaleosan village, Kalawat district, North Minahasa regency, the hot springs are 100 ml. Determination of the characteristics of geothermal fluids is carried out using the Cl-Li-B triangle diagram. The Cl-Li-B triangular diagram is used to determine the origin, boiling, and dilution of geothermal reservoir fluids. Reservoir temperature estimation is done by using silica geothermometer equation. Measurements of Li, B and Ca elements were carried out using Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) and measuring SiO2 compounds using Visible Spectroscopy. Measurement of Cl elements using acid-base titration method at the PT. Indonesian WLN. Based on laboratory results and data processing and field sampling, the dominant type of chloride (Cl) concentration was obtained. The results showed that the geothermal springs in Kaleosan Village are in immature water, which indicates that the geothermal reservoir fluid has undergone dilution with other elements. The geothermal system in Kaleosan Village is dominated by water and hot springs come out in the outflow zone.
Analisis Tipe Fluida Mata Air Panas berdasarkan Diagram Cl-SO4-HCO3 di Desa Pinaesaan Kabupaten Minahasa Selatan Angely Syuly Ratag; Cyrke A.N. Bujung; Farly Reynol Tumimomor; Jeferson Polii
Jurnal FisTa : Fisika dan Terapannya Vol 3 No 2 (2022): 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.v3i2.206

Abstract

Geothermal is a renewable energy source that occurs naturally beneath the earth's surface. This energy source comes from heating magma to rocks and water along with the elements contained in the earth's crust. North Sulawesi has the potential as a geothermal development area, either directly or indirectly. The research location in Pinaesaan Village has geothermal potential because it’s characterized by the presence of hot springs and is included in the Geothermal Work Area Kotamobagu. The purpose of this study was to determine the type of fluid and molecular functional groups of hot springs in Pinaesaan Village, South Minahasa Regency. By geochemical method using Cl-SO4-HCO3 diagram and FTIR, it’s known that the type of hot spring fluid in Pinaesaan Village is Chloride (Cl) type, and the molecular functional groups are C=O, where the constituents of the main chain C bind to Cl (Chloride) which corresponds to the result of fluid type.
Analisis Karakteristik Fluida dan Estimasi Temperatur Reservoir di Desa Karumenga Kecamatan Langowan Utara Ronaldo Rukait; Rolles Nixon Palilingan; Jefferson Polii
Jurnal FisTa : Fisika dan Terapannya Vol 3 No 2 (2022): 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.v3i2.208

Abstract

Indonesia is a country with great geothermal potential because it is located at the meeting point of three large plates, and North Sulawesi is right in the ring of fire area, so it has large reserves of geothermal energy. The research area located in Karumenga Village, North Langowan District, Minahasa Regency, North Sulawesi Province was chosen as the research location because in that area there are surface manifestations in the form of hot springs which are estimated to come from a geothermal system. The purpose of this study was to determine the fluid characteristics and reservoir temperature estimation at the research site using geochemical methods andanalysis was carried out using the Na-K-Mg geo-indicator and the Na-K Giggenbach geothermometer. After plotting laboratory chemistry data on Giggenbach's Na-K-Mg ternary diagram, it shows that the fluid characteristics of the hot springs at the research site are partial equilibrium water where the fluid has partially changed so that it is not completely in a state of equilibrium. and based on calculations using a Na-K geothermometer, it was found that the estimated temperature of the hot spring reservoir in Karumenga Village, North Langowan District is 209.638 oC and is included in the medium enthalpy system.
Analisis Karakteristik Fluida dan Estimasi Temperatur Reservoir menggunakan Geoindikator Na-K-Mg di Kecamatan Tompaso Baru Tesalonika Lontoh; Heindrich Taunaumang; Jeferson Polii
Jurnal FisTa : Fisika dan Terapannya Vol 3 No 2 (2022): 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.v3i2.210

Abstract

Geothermal is a source of thermal energy contained in hot water, rock, water vapor, and other gases and minerals that are genetically inseparable from a geothermal system. This energy comes from heating water and rocks and other elements contained in geothermal energy stored in the earth's crust. Energy needs are increasing, various efforts are made to take advantage of the potential that exists in Indonesia, one of which is geothermal potential. Geothermal energy is a renewable natural resource with high potential and is one of the preferred energy sources in energy diversity. The existence of geothermal sources, marked by the presence of geothermal manifestations emerging to the surface, one of which is in Tompaso Baru District. The fluid samples were then tested in the laboratory, then data processing was carried out using the fluid geochemical method in the form of calculating the percentage of the Na-K-Mg geoindicator to determine the type of fluid and a geothermometer to determine the estimated reservoir temperature. By using the calculation of the percentage of chemical content from the laboratory test results Na/1000+K/100+√Mg and plotting a ternary diagram of a partial equilibrium waters type of geothermal fluid, namely a condition where the fluid has partially changed so that it is not fully in equilibrium, and calculations using a silica geothermometer the estimated reservoir temperature is 191.1078ºC, which is the type of reservoir with medium temperature.
Co-Authors Alfrie Musa Rampengan Alfrits Komansilan Angely Syuly Ratag Antameng, Johan Olden B. Armando Ariakta Aloanis Armstrong F. Sompotan Aslam Rais Brenda Bella Gunena Celvin Kristian Karisoh Cyrke A N Bujung Djeli Alvi Tulandi Donny Royke Wenas Efrem Jesky Arruan Farly Reynol Tumimomor Gisella Gabriella Tangkere Gloria Permatasari Heindrich Taunaumang Heinrich Taunaumang Jimmy Lolowang Lahope, Kenny Setiawan Lolowang, Jimmy Marcelino Datunsolang Musa Salvador Arikalang Olivia Betricha Gare Patricia Mardiana Silangen Poluakan, Willy Ch A. Priskilla Wulandari Polimpung Putri Isaura Christoffel Rampengan, Alfrie M Ravael Ratumbuysang Rigitha Petrisia Raco Risma P. Sambolayuk Rizqie Emeninta Putri Rolles Nixon Palilingan Ronaldo Rukait Rumimpunu, Fira F. N Satyano W Mongan Sumita Ginoga Tamara, Gersom Jeremia Tengker, Soenandar Millian Tompunu Tesalonika Lontoh Teshalonikha Gabriel Iglesia Miranda Saburu Treesje K. Londa Truly Daniel Tumimomor, Farly R. Uranti Amba Lembang Wantalangi, Windy