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All Journal Eksergi: Jurnal Teknik Energi Jurnal Pengabdian Masyarakat Bangsa
F Gatot Sumarno, F Gatot
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Upaya Transparansi Informasi di Desa Surokonto Wetan, Kecamatan Pageruyung, Kabupaten Kendal Melalui Desiminasi Teknologi Papan Informasi Berbasis Solar PV Wahyono, Wahyono; Prasetiyo, Budhi; Widyaningsih, Wiwik Purwati; Surindra, Mochamad Denny; Priyoatmojo, Slamet; Su'udy, Ahmad Hamim; Herlambang, Yusuf Dewantoro; Margana, Margana; Sumarno, F Gatot; Suwarti, Suwarti; Hermawan, Baktiyar Mei; Sutanto, Bayu; Apriandi, Nanang
Jurnal Pengabdian Masyarakat Bangsa Vol. 2 No. 3 (2024): Mei
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v2i3.853

Abstract

Keterbatasan akses informasi akibat infrastruktur yang belum memadai di beberapa daerah berpotensi menutup ruang keterlibatan masyarakat di dalam proses pembangunan. Hal ini menjadi penyebab sering terjadinya kegagalan dalam mencapai target pembangunan yang inklusif dan berkelanjutan. Kegiatan ini bertujuan untuk memastikan keterbatasan akses informasi masyarakat tersebut dapat diatasi melalui desiminasi teknologi papan informasi berbasis solar PV mulai dari sistem pemerintahan terbawah, yaitu desa. Aparatur Desa Surokonto Wetan dilibatkan sebagai mitra di dalam kegiatan ini. Pendekatan Participatory Rural Appraisal (PRA) digunakan di semua tahapan proses. Kegiatan ini menghasilkan seperangkat teknologi sistem informasi yang dapat diakses masyarakat secara luas untuk mendapatkan informasi sistem pemerintahan yang transparan.
Solar Cell Performance Test against Load Variations Sumarno, F Gatot; Wahyono, Wahyono; Mei Hermawan, Baktiyar; Hamim Su”™udy, Ahmad; Fatowil Aulia, Nur; Khoiroh, Ikhwatinah; Surindra, Mochammad Denny
Eksergi Vol. 18 No. 2 (2022): MAY 2022
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (384.172 KB) | DOI: 10.32497/eksergi.v18i2.3570

Abstract

Solar cell is a converter of light energy into electrical energy. This study aims to examine the characteristics of the solar cell to load variations. The research was conducted at the Semarang State Polytechnic Energy Conversion Lab. The solar cell used in the research of the monocrystalline solar cell type KTENG CP-520S. The research method is carried out by measuring the value of solar intensity, voltage and electric current from the solar cell, then calculating the value of the power and efficiency of the solar cell. The greater the intensity of sunlight, the better the characteristics of the solar cell with a note that the solar cell surface temperature must be stable at 250C. The results showed that the highest input power of the solar cell was 5293.69 watts at a lamp load of 115 watts at 833.6 W/m2 of radiation during sunny weather. The highest value of the output power of the solar cell is 191.52 watts when the lamp is loaded with 190 watts of radiation at 739.4 W/m2 during sunny weather. While the highest value of the load output power is 212.43 watts when the lamp is loaded with 200 watts of radiation at 724.4 W/m2 when the weather is sunny. The highest efficiency of the solar cell is 4.13% when the lamp is loaded with 200 watts of radiation at 724.4 W/m2 when the weather is sunny. And the highest value of Solar Power Plant efficiency is 4.61% at a 200 watt lamp loading at 724.4 W/m2 radiation when the weather is sunny.
Savonius Turbine Performance Type ”“ S Variation of Rotor Sweep Diameter and Air Gap Margana, Margana; Sumarno, F Gatot; Purwati W, Wiwik; Suwarti, Suwarti; Fakhri Dzulfikar, Hafidh; Ibrahim, Nandhi Lathief; Wahyuningtyas, Saskia; Widya Larassanti, Sri; Naufal Hanif, Daffa”™
Eksergi Vol. 18 No. 2 (2022): MAY 2022
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (738.794 KB) | DOI: 10.32497/eksergi.v18i2.3582

Abstract

The savonius wind turbine with variations in the diameter of the sweep and the air gap is a technological innovation with treatment using changes in the diameter of the sweep and the distance of the air gap between the blades. And it has low self-starting and relatively high torque. The purpose of the study was to create five models and test the performance of the Savonius wind turbine with variations in sweep diameters of 500 mm, 480 mm, 460 mm, 440 mm and 420 mm with air gaps of 30 mm, 50 mm, 70 mm, 90 mm, and 110 mm. . And analyze the turbine performance to get the best Coefficient of Power (CP) from the five turbine gaps. The stages of the research method include the preparation of a literature search, turbine design planning, tool making, tool testing, data collection, data analysis, and the final stage. The results of the tests carried out showed that the Savonius turbine with an air gap of 70 mm with a CP value of 0.232 had maximum work at low wind speeds (4 m/s) and at high wind speeds (10 m/s). obtained a CP value of 0.0695
Analysis of Hybrid System in the Photovoltaic and Photothermal Technology Sutanto, Bayu; Munawwaroh, Dita Anies; Bono, Bono; Herlambang, Yusuf Dewantoro; Sumarno, F Gatot; Alfauzi, Abdul Syukur
Eksergi Vol. 19 No. 01 (2023): JANUARY 2023
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v19i01.4191

Abstract

The utilisation and optimisation of solar energy have a vital role in reducing the global need for conventional fossil energy. Moreover, it is also clean and eco-environmentally energy resources. The photovoltaic-thermal (PV-T) hybrid system that combines photovoltaic and photothermal technology is an ideal solution for creating high-efficiency energy conversion devices. In addition, this system can be constructed to be small and compact with a higher economic value than the conventional technology from the previous solar energy harvesters. This paper will review the PV-T hybrid system and provide the thermodynamic analysis and the feasibility study.
Study of Hybrid Wind and Solar Energy Power Plants: An Analysis of the Battery Charging and Discharging System Sumarno, F Gatot; Evan, Bah; Aspriyanti, Vita Ayu; Alwi, Muhammad
Eksergi Vol. 21 No. 03 (2025): SEPTEMBER 2025
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v21i03.7098

Abstract

Alternative energy can address the issue of PLN electricity supply, which is not available in all regions of Indonesia. The hybrid system of solar cells and wind turbines is a clean and environmentally friendly energy source because it does not produce carbon dioxide (CO₂) or other gases that play a role in global warming. The purpose of this final project is to analyze the length of time needed by a hybrid generator to charge and discharge the battery using load variations. This test was conducted in the Energy Conversion Laboratory using a unit of hybrid system equipment produced by KTENG (Korea Technology). The method employed involves charging the battery with energy generated from the hybrid system and discharging it using variations in lamp load. The results of this study indicate that the time needed to charge the battery is 21.28 hours in slightly cloudy weather with a total current of 4.7 amperes, and the battery discharge reaches 200 hours using a 10-watt load. Hybrid Generator, Battery Charging, and Discharging
Co-Authors - Wahyono Ahmad Hamim Su’udy Alfauzi, Abdul Syukur Aminuyati Aspriyanti, Vita Ayu Bono Bono Budhi Prasetiyo Evan, Bah Fakhri Dzulfikar, Hafidh Fatowil Aulia, Nur Hamim Su”™udy, Ahmad Hermawan, Baktiyar Mei Ibrahim, Nandhi Lathief Khoiroh, Ikhwatinah Margana Margana MEI HERMAWAN, BAKTIYAR Mochammad Denny Surindra Muhammad Alwi Munawwaroh, Dita Anies Nanang Apriandi Naufal Hanif, Daffa”™ Ova Imam Adita, Ova Imam Purwati W, Wiwik Slamet Priyoatmojo, Slamet Sutanto, Bayu Suwarti Suwarti Wahyono Wahyono Wahyuningtyas, Saskia Widya Larassanti, Sri Wiwik Purwati Widyaningsih Yusuf Dewantoro Herlambang