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All Journal Rotasi Jurnal Kreativitas PKM PEDULI: Jurnal Imiah Pengabdian Pada Masyarakat Indonesian Journal of Community Dedication Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Journal of Applied Science, Engineering, Technology, and Education Jurnal Bakti Masyarakat Indonesia Academia Open Journal La Multiapp Indonesian Journal of Innovation Studies Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Eduvest - Journal of Universal Studies Madani : Jurnal Pengabdian Kepada Masyarakat Nemui Nyimah
Damora Rhakasywi
UNIVERSITAS PEMBANGUNAN NASIONAL VETERAN JAKARTA
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Other

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Penerapan Lampu Penerangan Jety Tempat Sandar Perahu Nelayan Menggunakan Panel Solar Cell Marasabessy, Amir; Ashfi Rayhan, Fajri; Sulistyawati, Wiwin; Rhakasywi, Damora; Widiyanto, Didit
Indonesian Journal of Community Dedication Vol. 6 No. 2 (2024): Indonesian Journal of Community Dedication (IJCD)
Publisher : STIKES Nani Hasanuddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35892/community.v6i2.2097

Abstract

Desa Pulo ampel Kota Serang terdapat kampung rukun nelayan “Cinta Bahari”. yang secara geografis terletak pada posisi sebelah timur yang membentang dari utara ke selatan sepanjang ± 3 km. Mitra rukun nelayan memiliki perahu ikan 134 unit, 91 unit kapasitas 1 GT, 33 unit kapasitas 2 GT dan 10 unit kapasitas 10 GT bersandar di dermaga yang dibangun melalui swadaya gotong royong dengan panjang 85 meter dan lebar 1,5 meter. Permasalahan mitra rukun nelayan saat ini dermaga belum memiliki penerangan sehingga menjadi hambatan bagi nelayan menyandarkan perahu ikan dan bongkar muat di dermaga pada waktu malam dan pagi hari sehingga  sering terjadi tubrukan antara perahu ikan yang mengakibatkan terjadi kerusakan. Solusi mengatasi permasalahan, dilakukan pemasangan empat tiang lampu penerangan dermaga menggunakan panel solar cell. Pengabdian Kepada Masyarakat bertujuan penerangan listrik dermaga menggunakan panel solar cell Metode yang digunakan adalah penyuluhan dan pelatihan pemasangan komponen panel solar cell pada empat tiang lampu penerangan dermaga. Hasil kegiatan Pengabdian Kepada Masyarakat, kapasitas baterai dapat menampung energi listrik selama 5 jam dimana 2 tiamg lampu penerangan di gunakan pada pukul.19.00 s/d 23.59 wib dan dua tiamg lampu penerangan lainnya di gunakan pukul.01.00 s/d 06.00 wib. untuk kelancaran pengoperasian dan bongkar muat ikan di dermaga. Perhitungan pemasangan empat tiang lampu penerangan menggunakan komponen panel solar cell di dermaga selama lima tahun dengan tidak memperhitungkan penyusutan baterai, dibandingkan jika menggunakan penerangan listrik dari PLN, akan memberikan penekanan biaya Rp.3.360.000 untuk kesejahteraan mitra kelompok nelayan.
The Effect of Solar Panel Tilt Angle Automation on the Efficiency of Hybrid Renewable Energy Systems (HRES) Diraharja, Rifat Satrio; Rhakasywi, Damora; Fahrudin, Fahrudin
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.1674

Abstract

Background (General): Renewable energy is increasingly critical as fossil fuel reserves decline and global energy demand rises. Background (Specific): Hybrid Renewable Energy Systems (HRES) that combine solar photovoltaic (PV) and wind energy offer reliable alternatives, but fixed solar panels limit energy capture due to suboptimal orientation. Knowledge Gap: While solar tracking has been explored, its effectiveness within small-scale HRES prototypes in real-world conditions remains underexamined. Aim: This study investigates the impact of automated solar panel tilt adjustment on the efficiency of a small-scale HRES integrating a vertical-axis wind turbine. Results: Experimental testing over five days demonstrated that the automated tilt system enhanced solar energy capture by 23–43% compared to fixed-tilt configurations, with daily energy outputs reaching 1,020 Wh, although battery charging remained capped at 60% due to charge controller restrictions. Novelty: The research highlights a low-cost, single-axis automation mechanism controlled by ESP32 and LDR sensors, providing a feasible and scalable solution for off-grid applications. Implications: Findings underscore the potential of affordable solar tracking in hybrid systems to improve energy access in rural or remote areas, while emphasizing the need for improved storage management to fully realize efficiency gains Highlights: Automated tilt improved solar energy capture by 23–43%. Low-cost, ESP32–LDR system proved feasible for rural use. Battery charging limited at 60% due to controller settings. Keywords: Solar Tracking, Hybrid Renewable Energy, Tilt Angle Automation, Energy Efficiency, Off-Grid Systems
Experimental Analysis of the Performance of Savonius VAWT with Different Numbers of Blades on Roofs Francisco, Jeremi; Rhakasywi, Damora; Fahrudin, Fahrudin
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.1675

Abstract

General Background: Renewable energy is increasingly vital for sustainable development, with wind energy offering significant potential in urban settings where land availability is limited. Specific Background: Vertical axis wind turbines (VAWTs), particularly Savonius types, are promising for rooftop applications but remain underexplored compared to horizontal axis turbines. Knowledge Gap: Limited studies have systematically examined how variations in blade number affect VAWT performance under low wind speed conditions typical of urban environments. Aim: This study investigates the performance of Savonius VAWTs with 3, 4, and 6 blades to determine the optimal configuration for efficient energy generation on building roofs. Results: Experimental testing over 24 hours at an average wind speed of 2 m/s revealed that the 3-blade turbine achieved the best performance, with a tip speed ratio (0.94), coefficient of power (0.242), and voltage output (14.41 V), outperforming the 4-blade and 6-blade designs. Novelty: This work demonstrates that reducing blade count can enhance efficiency in low-speed, rooftop urban wind applications, challenging the assumption that more blades inherently improve performance. Implications: The findings provide insights for optimizing small-scale renewable energy systems in urban areas, contributing to sustainable energy strategies and supporting national renewable energy targets. Highlights: Three-blade Savonius turbine shows highest efficiency at low wind speeds. Blade number directly affects TSR, CP, and voltage output. Rooftop VAWT offers practical solution for small-scale urban energy. Keywords: Wind, Wind Turbine, Tip Speed Ratio, Energy, Green Energy
Pemberdayaan dan Pendampingan Kader Kesehatan terhadap Pelaporan Pemasaran Susu Formula yang Tidak Etis di Wilayah Kecamatan Limo, Depok Ismail, Rita; Pamungkas, Eny Dewi; Marcelina, Lina Ayu; Samaria, Dora; Armansyah, Armansyah; Rhakasywi, Damora; Rizkiati Ramadhani, Mahirah Salwa Aurelia Ananda; Rosidi, Erlia Nurbayti; Dewi, Talitha Cahya Kemala
Jurnal Kreativitas Pengabdian Kepada Masyarakat (PKM) Vol 8, No 10 (2025): Volume 8 No 10 (2025)
Publisher : Universitas Malahayati Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jkpm.v8i10.22339

Abstract

ABSTRAK Pemasaran susu formula yang tidak etis masih menjadi tantangan dalam mendukung ASI eksklusif dan pencegahan stunting. Kegiatan ini bertujuan meningkatkan pengetahuan kader kesehatan di Kecamatan Limo, Depok, mengenai pelaporan praktik pemasaran susu formula. Metode berupa penyuluhan, pemutaran video, Focus Group Discussion (FGD), role play, dan pembentukan Satgas Kader dengan peserta 20 kader. Hasil menunjukkan peningkatan signifikan pengetahuan mengenai praktik pemasaran susu formula, dengan rata-rata nilai pre-test 72,5 menjadi 94,67 pada post-test. Kegiatan ini dapat meningkatkan pengatahuan dan memperkuat peran kader sebagai pengawas dan edukator Masyarakat mengenai praktik pemasaran susu formula. Program ini dapat dilakukan secara berkelanjutan dengan jangkauan lebih luas. Kata Kunci: ASI Eksklusif, Etis, Kader Kesehatan, Susu Formula  ABSTRACT Unethical marketing of formula milk is still a challenge in supporting exclusive breastfeeding and preventing stunting. This activity aims to increase the knowledge of health cadres in Limo District, Depok, regarding reporting on formula milk marketing practices. Methods include counselling, video screenings, Focus Group Discussion (FGD), role plays, and the formation of a Cadre Task Force with 20 cadres participating. The results show a significant increase in knowledge regarding formula milk marketing practices, with an average pre-test score of 72.5 rising to 94.67 in the post-test. This activity can increase knowledge and strengthen the role of cadres as supervisors and community educators regarding formula milk marketing practices. This program can be carried out sustainably with a wider reach. Keywords: Exclusive Breastfeeding, Ethics, Formula Milk, Health Cadres 
High Pressure and Long Compression Improve the Quality of Coffee Waste Biopellets : Tekanan Tinggi dan Kompresi Lama Meningkatkan Kualitas Biopellet Limbah Kopi Nurzati, Syarif Adhika Adhin; Rhakasywi, Damora; Fahrudin, Fahrudin
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.1790

Abstract

General Background The increasing demand for renewable energy highlights the potential of biomass waste as a sustainable energy source. Specific Background Spent coffee grounds represent an abundant biomass material with high calorific potential, yet their utilization efficiency depends strongly on processing parameters during pelletization. Knowledge Gap Previous studies have not fully elucidated how compaction pressure and pressing duration affect the physicochemical characteristics of coffee-ground biopellets according to the SNI 8021:2014 standard. Aims This study investigates the effects of varying pressure (500, 750, and 1000 kgf) and pressing duration (30 s and 180 s) on the quality attributes of biopellets composed of 92.5% coffee waste and 7.5% tapioca adhesive. Results Findings indicate that higher pressure and longer pressing duration significantly improve density, reduce moisture and volatile matter, and enhance fixed carbon content, though the ash content remains above the acceptable limit. The optimal combination of 1000 kgf and 180 s produced biopellets meeting the SNI standards for calorific value and bound carbon. Novelty This research provides quantitative insights into the synergistic role of mechanical compaction and pressing time in optimizing biofuel quality from coffee waste. Implications The results support the advancement of circular bioenergy production in Indonesia by transforming coffee waste into high-quality renewable fuel. Highlights: High pressure and longer compression improve biopellet quality. Only 1000 kgf–180 s meets SNI standards for bound carbon and calorific value. High ash content remains the main limitation of coffee waste biopellets. Keywords: Biopellet, Coffee Waste, Pressure, Compression Time, Renewable Energy
The Effect of Solar Panel Output Power Analysis with Reflector Angle Optimization and Addition of Heatsink-Fan Cooling System Suryo, Taufik Hadi; Rhakasywi, Damora; Fahrudin, Fahrudin
Journal of Applied Science, Engineering, Technology, and Education Vol. 5 No. 1 (2023)
Publisher : PT Mattawang Mediatama Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/454RI.asci1535

Abstract

The addition of reflectors to solar panels is used to increase the intensity of sunlight received by solar panels so that the electrical power generated by the panels increases. In adding reflectors to solar panels, they must consider various factors to be able to increase the power generated without having a negative effect on solar panels , one of which is providing a cooling system. Therefore, research is needed to increase the power generated by solar panels and cooling systems that are suitable for overcoming rising temperatures due to the addition of reflectors. The study was conducted by varying the glass mirror reflector, aluminum foil reflector, angle of the reflector, and heatsink-fan cooling system. The research method used in this study was to compare 2 solar panel models, namely: solar panels with the addition of glass mirror reflectors / aluminum foil and heatsink-fan cooling systems, and solar panel models without any addition. The results show that the solar panel model with the addition of a glass mirror reflector / aluminum foil can increase the output power according to the angle of the reflector, the highest increase reaching 16.70% in the 450-angled aluminum foil mirror reflector. The heatsink cooling system is considered to be useful for reducing the temperature of solar panels, but the decrease is relatively small below 5%.
Analysis on The Influence of Sollar Irradiation And Rotational Speed of Centrifugal Submersible Pumps Efficiency in Solar Water Pump Systems Technology Shafa, Naura; Rhakasywi, Damora; Fahrudin, Fahrudin
Journal of Applied Science, Engineering, Technology, and Education Vol. 5 No. 2 (2023)
Publisher : PT Mattawang Mediatama Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/454RI.asci2070

Abstract

This study aims to analyze the effect of solar irradiation and rotational speed on the efficiency of centrifugal submersible pumps in solar water pump systems. The research was conducted using measuring instruments such as the PS2-4000 Controller on a PATS system with a capacity of 5940 Wp, Autodesk Inventor 2022, Microsoft excel, and Rstudio. The independent variables used were the level of solar irradiation and rotational speed obtained every day for two weeks from 07.00 – 17.00. The dependent variable is obtained from a literature study and the PATS system used. The PATS system uses a LORENTZ PS2-4000 C-SJ17-4 centrifugal submersible pump and a PLTS with a capacity of 5940 Wp with a static head design of 20 m. Data collection was carried out based on actual data taken at the installation location of the PATS system and the velocity triangle analysis approach based on pump geometry. Data collection at the location was carried out using the pump controller PS2-4000 and COMPASS software. Data processing is done using Excel and Rstudio software. The results of data processing will be presented in the form of a curve that explains the relationship between the two or three variables studied. Based on this curve, results and conclusions can be obtained regarding the effect of solar irradiation and rotational speed on the efficiency of centrifugal submersible pumps in solar water pump systems. Data processing is done using Excel and Rstudio software. The results of data processing will be presented in the form of a curve that explains the relationship between the two or three variables studied. Based on this curve, results and conclusions can be obtained regarding the effect of solar irradiation and rotational speed on the efficiency of submersible centrifugal pumps in solar water pump systems. Data processing is done using Excel and Rstudio software. The results of data processing will be presented in the form of a curve that explains the relationship between the two or three variables studied. Based on this curve, results and conclusions can be obtained regarding the effect of solar irradiation and rotational speed on the efficiency of submersible centrifugal pumps in solar water pump systems.
Exergy Analysis and Optimization of Kamojang Geothermal Power Plant Dry Steam Type Capacity 55 MW Kusumo, Rayhan Suryo; Rhakasywi, Damora; Fahrudin, Fahrudin
Eduvest - Journal of Universal Studies Vol. 4 No. 12 (2024): Journal Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v4i12.44733

Abstract

This study aims to analyze the exergy efficiency and irreversibility of the Kamojang Unit 2 Geothermal Power Plant (GPP) in Indonesia using an exergy analysis method. The results reveal that the turbine exhibits the highest exergy loss of 11,512 kW with an exergy efficiency of 82.78%. The condenser records the second-largest exergy loss of 9,875 kW, while the inter condenser and after condenser show the lowest exergy efficiencies at 22.6% and 38.55%, respectively. The overall system exergy efficiency is 65.3%, producing 63,261 kW of electricity from an input exergy of 96,764 kW. Optimization was conducted by varying the turbine inlet pressure from 4.5 to 6.5 bar, with the optimal pressure determined to be 4.5 bar, resulting in the highest exergy efficiency and the lowest irreversibility. This research provides valuable insights for enhancing geothermal power plant efficiency through thermodynamic parameter optimization.
PEMANFAATAN ENERGI PANEL SURYA DAN MARINE LOCATOR UNTUK PERAHU NELAYAN DESA PULO AMPEL Marasabessy, Amir; Rhakasywi, Damora; Sulistyawati, Wiwin; Widiyanto, Didit; Ashfi Rayhan, Fajri
Jurnal Likhitaprajna Vol 9 No 1 (2025)
Publisher : FKIP Universitas Wisnuwardhana

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

Abstract

Desa Pulo ampel, berada di pesisir utara Pulau Jawa di Kecamatan Pulo ampel. Berdasarkan geografis berada di bagian timur, terbentang dari utara ke selatan ± 3 Km. Masyarakat sebagian besar menjadi nelayan, memiliki perahu ikan diantaranya 33 unit berkapasitas 3 Gross Tonnage (GT). Jumlah nelayan 215, Perahu ikan kapasitas 3 GT beroperasi dari malam hingga pagi hari menggunakan penerangan dari sumber baterai, baterai sering mengalami kerusakan karena buka pasang untuk charge di kota dengan harga mahal. Keberadaan nelayan di areal fishing ground menjadi cemas keluarga terutama saat cuaca buruk. Hal ini mengganggu pengoperasian perahu ikan sehingga berdampak menurunya produksi dan pemasaran hasil tangkapan ikan. Tujuan Pengabdian Kepada Masyarakat adalah memanfaatkan energi panel surya untuk penerangan pada perahu ikan 3 GT dan marine locator untuk menegtahui posisi nelayan di areal fishing ground. Metode yang digunakan adalah penyuluhan, pelatihan, pendampingan perawatan dan evaluasi kinerja panel surya dan marine locator dengan melibatkan mitra nelayan agar kedepan dapat melakukan pemasangan dan perawatan secara mandiri. Hasil kegiatan Pengabdian Kepada Masyarakat diharapkan dapat memberikan kelancaran dan keselamatan dalam pengoperasian mencari ikan, sehingga produksi dan pemasaran hasil tangkapan ikan meningkat dari 7 s/d 12 kg/hari menjadi 10 s/d 15 kg/hari guna peningkatan ekonomi dan kesejahteraan mitra nelayan.
PELATIHAN PERAWATAN ZONA LAMBUNG PERAHU IKAN BERBAHANKAYU BAGI KELOMPOK NELAYAN DESA LONTAR KECAMATAN TIRTAYASA KABUPATEN SERANG Marasabessy, Amir; Sudjasta, Bambang; Rhakasywi, Damora
Nemui Nyimah Vol. 1 No. 2 (2021): Nemui Nyimah
Publisher : FT Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/nm.v1i2.12

Abstract

Pengabdian kepada masyarakat sangat membantu bagi kehidupan masyarakat untuk memperbaiki taraf kehidupan perekonomian agar bisa menjadi sejahtera. Kehidupan masyarakat Desa Lontar lebih didominasi oleh mitra kelompok nelayan dengan jumlah 1327 orang dan petani rumput laut 1021 orang. Hasil produksi penangkapan ikan dapat dikatakan belum maksimal jika dibandingkan dengan luas perairan 11.134,224 Km2 dan panjang garis pantai 517,42 Km. Saat ini mata pencaharian masyarakat Desa Lontar sebagian besar sebagai nelayan yang setiap hari mencari ikan untuk memenuhi kebutuhan hidup, perahu ikan yang digunakan berbahan kayu dengan kondisi phisik 40-50 % telah mengalami degradasi, dengan jumlah perahu ikan ± 100 unit. Aspek penting yang mendapat perhatian adalah sebagian besar perahu ikan tidak melaut karena sering terjadi kerusakan/kebocoran zona lambung ± 3 – 4 kali dalam setahun. Tujuan pelaksanaan PKM adalah memberikan pelatihan perawatan zona lambung perahu ikan berbahan kayu menggunakan bahan fiberglass. Metode yang digunakan adalah pendampingan pelatihan dengan melibatkan mitra kelompok nelayan, sebagai upaya transfer ilmu dan teknologi perawatan zona lambung perahu ikan berbahan kayu secara aplikatif. Hasil dari kegiatan Program Kemitraan Masyarakat, mitra kelompok nelayan dapat melakukan perawatan zona lambung perahu ikan secara mandir/kelompoki untuk menghindari kerusakan/kebocoran dan mempertahankan kekuatan zona lambung guna kelancaran dan keselamatan mencari ikan di laut.
Co-Authors Abhitah, Athallah Nabiel Amir Marasabessy Armansyah Armansyah Ashfi Rayhan, Fajri Asrianti, Nadia Putri Bambang Sudjasta Bambang Sudjasta Budhi Martana Christoforus Deberland David, Jerico Dewi, Talitha Cahya Kemala Didit Widiyanto Diraharja, Rifat Satrio Dora Samaria Fahrudin Fahrudin Fajri Ashfi Rayhan Febriana, Miftakhul Jannah Francisco, Jeremi Harinaldi . Kusumo, Rayhan Suryo Lina Ayu Marcelina Nur Cholis Nurzati, Syarif Adhika Adhin Pamungkas, Eny Dewi Prasetyo, Eko Andi Rachman, Muhammad Nanda Fatur Rita Ismail Rizkiati Ramadhani, Mahirah Salwa Aurelia Ananda Rosidi, Erlia Nurbayti Shafa, Naura Sudjasta, Bambang Sulistyawati, Wiwin Suryo, Taufik Hadi Sutarya, Muhamad Farad Wiwin Sulistyawati