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All Journal Jurnal MIPA JURNAL LPPM BIDANG SAINS DAN TEKNOLOGI Jurnal Ilmiah Sains Jurnal FisTa : Fisika dan Terapannya Jurnal Lentera: Penelitian dan Pengabdian Masyarakat
Hesky Stevy Kolibu
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Health Professions Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Other

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PEMODELAN KONTROL SUHU, TEKANAN, DAN LAJU ALIRAN UAP PADA KONDENSOR DENGAN MENGGUNAKAN KONTROL LOGIKA FUZZY Alviano Markus Sigarlaki; Hesky Stevy Kolibu; Verna Albert Suoth
JURNAL ILMIAH SAINS Volume 15 Nomor 1, April 2015
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (338.069 KB) | DOI: 10.35799/jis.15.1.2015.6765

Abstract

PEMODELAN KONTROL SUHU, TEKANAN, DAN LAJU ALIRAN UAP PADA KONDENSOR DENGAN MENGGUNAKAN KONTROL LOGIKA FUZZY  ABSTRAK Kondensor adalah komponen pendingin yang digunakan dalam sistem PLTP Lahendong untuk mengubah uap menjadi air. Banyak hal yang terjadi pada kondensor seperti kevakuman tekanan kondensor yang sering naik turun, serta laju aliran uap dari turbin yang tidak stabil. Hal ini dapat mempengaruhi efisiensi kerja kondensor. Pemodelan kontrol suhu, tekanan dan laju aliran uap pada kondensor dengan menggunakan kontrol logika fuzzy, dilakukan untuk memperoleh efisiensi yang baik pada proses kerja kondensor. Penelitian ini menggunakan data sekunder dari PLTP Lahendong yang diolah dan dianalisis dengan software logika fuzzy menurut aturan rule yang ditentukan. Hasil dan analisis tersebut dipakai untuk melihat keefektifan hubungan antara input dan output. Hasil pengontrolan fuzzy dapat menunjukkan stabilitas dan keefektifan yang terjamin. Hal ini terlihat pada volume air kondensor yang cenderung stabil dengan nilai error pada RMSE adalah 0.7847. Kata kunci : Model Logika Fuzzy, Kondensor, Kontrol Logika Fuzzy   DESIGN TEMPERATURE CONTROL PRESSURE STEAM FLOW RATE IN THE CONDENSER USED FUZZY LOGIC CONTROL ABSTRACT Condenser is cooling components used in the system PLTP Lahendong to change steam into water. Many things that happen in the condenser such as vacuum condenser pressure is often up and down, also the flow rate of the steam turbine unstable. This can affect the efficiency of the condenser. Design control temperature, pressure and flow rate of steam in the condenser by using fuzzy logic control, performed to obtain a good efficiency in the work process condenser. This study uses secondary data from PLTP Lahendong processed and analyzed with fuzzy logic software according to the rules specified rule. Results and analysis are used to see the effectiveness of the relationship between inputs and outputs. The results of fuzzy control can demonstrate the stability and effectiveness are guaranteed. This can be seen in the volume of water condenser with a stable trend in the RMSE error value is 0.7847. Keywords : Design Fuzzy Logic, Condenser, Control Fuzzy Logic
Control of White Rust Disease (Puccinia Horiana Henn.) in Chrysanthemum Plants using a Greenhouse Control System Based on Ardunio Uno Nababan, Bonitha Elisabet; Kolibu, Hesky Stevy; Mosey, Handy Indra Regain
JURNAL LPPM BIDANG SAINS DAN TEKNOLOGI Vol. 9 No. 1 (2024)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35801/jlppmsains.9.1.2024.53887

Abstract

Research has been conducted to produce an Arduino Uno-based control system in improving the quality of chrysanthemum production. Data on the state of the greenhouse environment are taken from the DHT22 sensor (air temperature and humidity meter), and BH1750 sensor (light intensity meter). To determine the ability of the control system as a means of controlling white rust disease in chrysanthemums, a comparison of the percentage of white rust disease in greenhouses measuring (5 × 10) m each applied by the control system and without a control system. The results of this study show the response of the control system can work well in the two phases of chrysanthemum growth. The created system is able to automate regular watering of plants and the addition of light according to the needs of chrysanthemums. White rust disease control using a control system was able to produce 14.94% better quality of chrysanthemum crop production than without using a control system. With this control system, it has an impact on the cost of maintaining chrysanthemums such as the use of pesticides in dealing with white rust disease. Keywords: Chrysanthemum Plant, Control System, Greenhouse, White Rust Disease.
Pemanfaatan Biomassa Limbah Pala sebagai Energi Alternatif untuk Kesejahteraan Petani di Desa Kaasar Jumriadi; Roni Koneri; Hesky Stevy Kolibu; Sitti Nur Isnian
Jurnal Lentera: Penelitian dan Pengabdian Masyarakat Vol. 5 No. 2 (2024): Jurnal Lentera - Penelitian dan Pengabdian Masyarakat
Publisher : Yayasan Bina Lentera Insan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57207/j67k1d76

Abstract

Krisis energi yang ditandai dengan menipisnya sumber energi fosil mengharuskan semua pihak yang terlibat untuk mewaspadai kondisi ini. Pengabdian masyarakat ini bertujuan untuk mengedukasi dan memberikan kesadaran, pengetahuan, sikap dan keterampilan petani pala di Desa Kaasar, Kecamatan Kauditan, tentang pemanfaatan limbah pertanian pala sebagai energi alternatif yang ramah lingkungan (biobriket) dan dapat digunakan untuk meningkatkan pendapatan keluarga dalam meningkatkan mata pencaharian mereka. Pengabdian ini menggunakan tiga metode, yaitu penyuluhan, demonstrasi, dan pelatihan. Hasil dari pengabdian tersebut adalah terbentuknya kesadaran petani untuk peduli terhadap energi terbarukan, mengambil sikap untuk mengolah limbah menjadi bio briket yang akan digunakan untuk bahan bakar rumah tangga sambil melihat peluang untuk dipasarkan, dan petani mampu membuat bio briket. Diharapkan kegiatan ini dapat berperan dalam menyelesaikan krisis energi dan meningkatkan kesejahteraan masyarakat.
Sistem Monitoring Arus dan Tegangan Pada Panel Surya 50Wp Berbasis IoT Suoth, Verna Albert; Pandara, Dolfie Paulus; Kolibu, Hesky Stevy
Jurnal Ilmiah Sains Volume 26 Issue 1, April 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jis.v26i1.64415

Abstract

The utilization of small-scale solar panels, particularly those with a capacity of 50 Wp, has become increasingly widespread in household systems and remote areas. However, the lack of adequate monitoring systems makes it difficult for users to identify actual panel performance, causing efficiency degradation to often go undetected at an early stage. This study aims to develop a current and voltage monitoring system for a 50 Wp solar panel based on the Internet of Things (IoT) that is capable of providing real-time performance data to support performance evaluation and more efficient energy management. The system was developed using current and voltage sensors, an ESP32 microcontroller, and a cloud-based IoT application for data visualization. The test results indicate that the system is able to monitor daily variations in current and voltage with good accuracy and stable data transmission. The measured output power of the solar panel ranges from 1 to 1.4 W, or approximately 2–3% of the nominal capacity, which is influenced by solar radiation intensity, panel temperature, and system losses. The proposed IoT-based monitoring system has proven effective in recording the actual performance of the solar panel and providing real-time information that is useful for performance evaluation and optimization of small-scale solar energy utilization.
Verifikasi Hukum Boyle dan Tekanan Hidrostatik Dengan Barometer Digital PS-3203 Sumampouw, Jelovendra; Pilat, Geraldy; Lumembang, Megastin Massang; Kolibu, Hesky Stevy
Jurnal FisTa Fisika dan Terapannya Vol 7 No 1 (2026): APRIL
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

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

Abstract

This study investigates the relationship between gas pressure–volume behavior and liquid pressure–depth characteristics through experiments utilizing a PS-3203 pressure sensor. The objective is to quantitatively verify Boyle’s Law for gases and the hydrostatic pressure principle for liquids using digital pressure measurements. In the gas experiment, the air volume was adjusted using a syringe, and the pressure was recorded automatically. The results demonstrate an inverse proportionality between pressure and volume, confirming the equation . In the liquid experiment, pressure was observed to increase linearly with depth, with a gradient of 0,096 kPa/cm, corresponding to a water density of 979,6 kg/m³, indicating an approximate 2% deviation from the theoretical value. These findings validate both physical laws and demonstrate that the PS-3203 digital sensor can accurately verify Boyle’s Law and hydrostatic pressure while improving measurement precision and experimental efficiency.
Co-Authors A.A. Ketut Agung Cahyawan W Abidjulu, Gilbert Alviano Markus Sigarlaki Bobanto, Maria D. David Pang Ferdy . Gerald Tamuntuan Guntur Pasau Handy I. R. Mosey Isnian, Sitti Nur Jaya, Olive Ang Jumriadi Kulon, Tiffany M.J. Mandey, Fleydi Novisnky Megastin M. Lumembang Nababan, Bonitha Elisabet Pandara, Dolfie Paulus Pilat, Geraldy Roni Koneri RR. Ella Evrita Hestiandari Sagai, Fingken Stevanus Slamet Suyitno Raharjo Soba, Andreas Sumampouw, Jelovendra Telleng, Rirchard Christian Tongkukut, Seni Herlina Juita Tulong, Jein Verna A. Suoth