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All Journal JURNAL SIMETRIK Saintifik : Jurnal Matematika, Sains, dan Pembelajarannya Journal Mechanical Engineering
Pellu, Deny Ismail
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Physics Other

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ANALISIS LAJU KOROSI ROOFTOP TANGKI 100 KL YANG TERPAPAR LANGSUNG DENGAN AIR LAUT DI PLTD NAMLEA KABUPATEN BURU Papilaya, Wendy Juita; Pattikayhattu, Erwin B,; Pellu, Deny Ismail
Journal Mechanical Engineering Vol. 2 No. 3 (2024): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i3.2886

Abstract

Indonesia, as a tropical country surrounded by water, faces serious corrosion problems due to high rainfall and the presence of seawater containing corrosive salts. Metal materials, especially in storage tanks in the oil and gas industry, are very susceptible to this damage, so they require special attention to maintain their integrity.To evaluate the condition of the tank, an inspection was carried out using the Non-Destructive Testing (NDT) method with an Ultrasonic Thickness Gauge according to API 653 and 575 standards. In the August 2024 measurement, the 100 kl tank showed good condition with varying thicknesses. However, the rooftop section, despite having the highest thickness, recorded a higher annual corrosion rate than other sections.Analysis shows that while the thickness of the material can extend the service life of the tank, the high corrosion rate has the potential to accelerate the failure. The Rooftop is estimated to have a remaining service life of 6.9 years, lower than the rest of the course. This confirms that corrosion management and monitoring are essential to maintain the integrity of the tank and prevent more serious failures. Keywords : Tank, Rooftop, Corrosion, Non-destructive testing
ANALISIS PENGENDALIAN LAJU KOROSI DAN SISA UMUR PAKAI PIPA PENYALUR SOLAR DI PLTD HARUKU, DESA PELAUW Husen, Fahmi; Karyani, M. Said; Pellu, Deny Ismail
Journal Mechanical Engineering Vol. 2 No. 3 (2024): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i3.2894

Abstract

The impact of the corrosion rate of diesel fuel pipes in PLTD HARUKU, DESA PELAUW. This study aims to see how much influence corrosion control has on the corrosion rate and remaining service life studied using an Ultrasonic Thickness Gauge. Measurements were carried out directly with an Ultrasonic Thickness Gauge. The measurement results showed that the highest corrosion rate was 0.0975 mmpy and the lowest was 0.0189. The remaining life of each pipe is determined by a formula that has been adjusted by the standard, with a higher corrosion rate causing a shorter pipe life, in the diesel fuel pipe the highest remaining service life of the IPA is 149 years due to the small corrosion rate while the pipe with the lowest service life is 25 years due to the high corrosion rate. Based on this analysis, the pipe is still feasible to operate. In conclusion, although there are variations in the corrosion rate, and the remaining service life of the pipe can still be operated safely. Keywords: Corrosion control, Corrosion, ultrasonic thickness gauge
Analisa Perhitungan Pembangkit Listrik Tenaga Surya (PLTS) untuk Homestay di Negeri Rutong, Kota Ambon Wattimena, Sefnath J.; Tupalessy, Johanis; Pellu, Deny Ismail; Mbitu, Elisabeth Tansiana; Salamoni, Thenny Daus
SAINTIFIK Vol 11 No 1 (2025): Saintifik: Jurnal Matematika, Sains, dan Pembelajarannya
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/saintifik.v11i1.584

Abstract

Pemanfaatan energi surya sebagai energi alternatif pengganti energi konevensional yang berasal dari fosil semakin berkembang. Hal ini terjadi karena terjadinya pertumbuhan penduduk yang diiringi dengan peningkatan konsumsi listrik. Pembangkit Listrik Tenaga Surya (PLTS) adalah sistem yang dapat menghasilkan listrik dengan menyerap matahari melalui konversi sel surya. Sistem ini memiliki keunggulan yakni ramah lingkungan dan tidak memerlukan biaya tambahan. PLTS terbagi menjadi dua sistem yakni sistem on grid dan off grid. Terkait dengan hal tersebut, PLTS off grid dapat diimplementasikan pada homestay di negeri Rutong, kota Ambon. Homestay ini adalah salah satu fasilitas bagi wisatawan yang berkunjung ke negeri Rutong. Permasalahan yang terjadi saat ini adalah suplai listrik hanya berasal dari listrik PLN. Ketika terjadi pemadaman maka peralatan listrik tidak dapat digunakan. Oleh karena itu, tujuan penelitian ini untuk menghitung sistem kelistrikan PLTS Off Grid untuk homestay di negeri Rutong agar nantinya dapat mengatasi permasalahan kelistrikan yang terjadi. Metode yang digunakan adalah metode kuantitatif dengan menggunakan sumber data pustaka dan hasil pengukuran. Berdasarkan hasil perhitungan diperoleh data sebagai berikut (1) Total daya beban per hari homestay negeri Rutong sebesar 2890 Wh; (2) Untuk memenuhi kebutuhan energi di homestay negeri Rutong diperlukan total panel surya sebanyak 8 panel, inverter sebanyak 1 (satu) unit dengan daya 3500 Watt, 2 (dua) unit baterai dengan tegangan 24 V dan arus 100 Ah; dan (3) Pada instalasi pemasangan panel surya digunakan konfigurasi 2 (dua) array dengan masing-masing 4 (empat) panel surya.
PEMANFAATAN POTENSI GEOTERMAL WKP TULEHU MELALUI PEMBANGKIT SIKLUS BINER Pellu, Deny Ismail; Hatuwe, Azmain Noor
JURNAL SIMETRIK Vol 15 No 1 (2025): JUNI
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/js.v15i1.3088

Abstract

Geothermal is a new renewable energy model that comes from the bowels of the earth which is exploited using a Geothermal Power Plant (PLTP) into electrical energy. For high-temperature hot steam, it is used directly as a turbine rotation to produce electricity. The Tulehu WKP which has been explored by drilling 5 wells only produces medium-temperature fluids and is estimated to produce around 7 megawatts (MW) of electricity. One method used to increase the efficiency of PLTP is the binary cycle. The binary cycle is a geothermal fluid power generation system that is used to heat the working fluid using a heat exchanger from the liquid phase to the vapor phase which is then used to drive the turbine. Furthermore, the turbine drives the generator and is converted into electrical energy. This study aims to determine the performance of the Organic Rankine Cycle ORC using isopentane, isobutene and butane working fluids to obtain optimal performance. The method used is to use simulation with the Aspen HYSYS application to obtain good and optimal Organic Rankine Cycle (ORC) fluids. From these problems, the Tulehu Geothermal Power Plant can be built using a binary cycle, so in this study an energy analysis was carried out with the Tulehu Geothermal Power Plant binary cycle in order to produce maximum energy. By applying the binary cycle, the power generated reaches 10 MW.  Keywords: Geothermal, Binary Cycle, Energy
PENGARUH PENCAMPURAN RUMPUT LAUT DENGAN POLIMER XANTHAN GUM TERHADAP VISKOSITAS DAN ADSORPSI Hattu, Valentyn Paul Bodywein; Pellu, Deny Ismail
Journal Mechanical Engineering Vol. 2 No. 1 (2024): April
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i1.2583

Abstract

Polymer injection is an EOR method using a polymer solution to increase oil recovery by decreasing the oil-water mobility ratio by increasing the viscosity of the injection water. The purpose of this study was to analyze the effect of adding seaweed to xanthan gum polymer at various concentrations. The influence that is analyzed in this study is the viscosity test and the adsorption of the solution. From the research that has been carried out, it can be concluded that the best polymer viscosity is a polymer mixture of xanthan gum and seaweed, while based on the adsorption test, xanthan gum polymer is the best.. Keywords: Polymer Flooding, EOR, Viscosity, Adsorption
ANALISIS LAJU KOROSI ROOFTOP TANGKI 100 KL YANG TERPAPAR LANGSUNG DENGAN AIR LAUT DI PLTD NAMLEA KABUPATEN BURU Papilaya, Wendy Juita; Pattikayhattu, Erwin B,; Pellu, Deny Ismail; Latumaerissa, Hendrik S
Journal Mechanical Engineering Vol. 2 No. 3 (2024): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i3.2886

Abstract

Indonesia, as a tropical country surrounded by water, faces serious corrosion problems due to high rainfall and the presence of seawater containing corrosive salts. Metal materials, especially in storage tanks in the oil and gas industry, are very susceptible to this damage, so they require special attention to maintain their integrity.To evaluate the condition of the tank, an inspection was carried out using the Non-Destructive Testing (NDT) method with an Ultrasonic Thickness Gauge according to API 653 and 575 standards. In the August 2024 measurement, the 100 kl tank showed good condition with varying thicknesses. However, the rooftop section, despite having the highest thickness, recorded a higher annual corrosion rate than other sections.Analysis shows that while the thickness of the material can extend the service life of the tank, the high corrosion rate has the potential to accelerate the failure. The Rooftop is estimated to have a remaining service life of 6.9 years, lower than the rest of the course. This confirms that corrosion management and monitoring are essential to maintain the integrity of the tank and prevent more serious failures. Keywords : Tank, Rooftop, Corrosion, Non-destructive testing
ANALISIS PENGENDALIAN LAJU KOROSI DAN SISA UMUR PAKAI PIPA PENYALUR SOLAR DI PLTD HARUKU, DESA PELAUW Husen, Fahmi; Karyani, M. Said; Pellu, Deny Ismail; HATTU, VALENTYN P B
Journal Mechanical Engineering Vol. 2 No. 3 (2024): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i3.2894

Abstract

The impact of the corrosion rate of diesel fuel pipes in PLTD HARUKU, DESA PELAUW. This study aims to see how much influence corrosion control has on the corrosion rate and remaining service life studied using an Ultrasonic Thickness Gauge. Measurements were carried out directly with an Ultrasonic Thickness Gauge. The measurement results showed that the highest corrosion rate was 0.0975 mmpy and the lowest was 0.0189. The remaining life of each pipe is determined by a formula that has been adjusted by the standard, with a higher corrosion rate causing a shorter pipe life, in the diesel fuel pipe the highest remaining service life of the IPA is 149 years due to the small corrosion rate while the pipe with the lowest service life is 25 years due to the high corrosion rate. Based on this analysis, the pipe is still feasible to operate. In conclusion, although there are variations in the corrosion rate, and the remaining service life of the pipe can still be operated safely. Keywords: Corrosion control, Corrosion, ultrasonic thickness gauge
OPTIMASI PARAMETER RESERVOIR MENGGUNAKAN PEMODELAN NUMERIK DAN ANALISIS REGRESI UNTUK MENINGKATKAN RECOVERY FACTOR Hattu, Valentyn Paul Bodywein; Pellu, Deny Ismail
JURNAL SIMETRIK Vol 15 No 2 (2025): Desember
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/js.v15i2.3483

Abstract

Reservoir parameter optimisation is a critical aspect of enhancing the hydrocarbon recovery factor and requires systematic, integrated approaches. This research develops an integrated framework combining numerical reservoir modelling with multivariate regression analysis to optimise key reservoir parameters. The research methodology employs quantitative techniques, including three-dimensional numerical simulation, implementation of a multi-objective optimisation algorithm, and development of machine learning models for recovery factor prediction. Research data encompasses reservoir petrophysical parameters, including effective porosity ranging from 12.5% to 28.7%, horizontal permeability from 15 mD to 450 mD, and initial oil saturation from 52.3% to 84.6%. Optimisation analysis using three algorithms demonstrates that the Multi-Objective Grey Wolf Optimiser achieves superior performance, with an optimal recovery factor of 46.3% using only eight parameters. The third-order polynomial regression model yields a coefficient of determination of 0.89 in predicting nonlinear relationships between reservoir parameters and recovery factor. An artificial neural network implementation achieves 94.2% training and 89.3% test prediction accuracy, with a mean absolute error of 2.1%. Development scenario simulation indicates the five-spot injection pattern configuration produces the highest recovery factor, 48.2% with a present value of 187.3 million USD. The developed integrated framework demonstrates the ability to handle reservoir heterogeneity, with validation showing deviations of less than 7% relative to field data.Keywords: numerical modeling, parameter optimization, recovery factor
Co-Authors HATTU, VALENTYN P B Hattu, Valentyn Paul Bodywein Hatuwe, Azmain Noor Husen, Fahmi Johanis Tupalessy Karyani, M. Said Latumaerissa, Hendrik S Mbitu, Elisabeth Tansiana Papilaya, Wendy Juita Pattikayhattu, Erwin B, Salamoni, Thenny Daus Wattimena, Sefnath J.