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Uji Kinerja Hubungan Variasi Bilah terhadap Daya Turbin Angin Pada Sumbu Horizontal Muhammad Ridwan; Roswati Nuhasanah; Tita Atmajaya
Jurnal Pendidikan Tambusai Vol. 6 No. 2 (2022): Agustus 2022
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Peningkatan penduduk akan berdampak pada peningkatan permintaan listrik per kapita. Permintaan listrik per kapita berdasarkan data dari Dewan Energi Nasional pada tahun 2025 akan mencapai 2.030 kWh/kapita dan pada tahun 2050 akan mencapai 6.723 kWh/kapita. Kondisi ini masih berada di bawah target listrik per kapita yang terdapat dalam Kebijakan Energi Nasional yaitu 2.500 kWh/kapita di tahun 2025 dan 7.500 kWh/kapita tahun 2050. Turbin angin sebagai salah satu pembangkit energi yang mempunyai potensi besar untuk memecahkan masalah kebutuhan energi listrik yang ada di wilayah terpencil dan tidak mendapatkan suplai energi listrik dari PLN, Pembangkit listrik tenaga bayu adalah pembangkit listrik energi baru terbarukan (EBT) yang memanfaatkan putaran turbin angin untuk mengkonversi energi angin ke energi listrik, Pada penelitian ini akan dilakukan variasi jumlah bilah 2, 3, 5 dan 8 dibantu aplikasi Q- Blade untuk mengetahui hasil perhitungan serta grafik, Dengan kecepatan angin rata – rata 2,9 m/didapat variasi jumlah bilah 2 daya sebesar 44,007 watt dengan rotation speed 129,234rpm dengan Cp0,416763, bilah 3 sebesar daya 50,9077 watt dengan rotation speed 92,3101 rpm dengan Cp 0,482115, variasi jumlah bilah 5 daya sebesar 52,0975 watt dengan rotation speed 73,8481 rpm dengan Cp 0,493383, variasi jumlah bilah 8 daya sebesar 55,4924 watt dengan rotation speed 55,3861 rpm dengan Cp 0,525534.

Analysis of The Effect of Fuel Switching on The Thermal Efficiency of PLTG Unit 1.3 PT. PLN Indonesia Power Priok PGU Muhammad Ridwan; Rachmat Adi Gumelar
Asian Journal of Social and Humanities Vol. 2 No. 5 (2024): Asian Journal of Social and Humanities
Publisher : Pelopor Publikasi Akademika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59888/ajosh.v2i5.242

This study discusses the topic of thermal efficiency analysis in gas turbines. This study aims to determine the effect of using LNG and HSD fuel on the value of thermal efficiency. Therefore, the actual brayton cycle calculation method is used. This research is doing data processing using software, namely Microsoft Excel, Engineering Equation Solver (EES) and Cycle Tempo. Based on the results of the calculations that have been carried out, the thermal efficiency at a load of 75 MW with LNG fuel is 37.96% to 44.62% at a load of 100 MW and with HSD fuel at a load of 75 MW it is 40.61% and 45.60% at a load of 100 MW. Then in the EES simulation results with LNG fuel at a load of 75 MW it is obtained 37.51%, and 41.96% at a load of 100 MW. whereas with HSD fuel at a load of 75 MW it was obtained 41.76% and 46.15% at a load of 100 MW, and also the results of the cycle tempo simulation with LNG fuel at a load of 75 MW were 32.56% to 37.43% at a load 100MW. Then with HSD fuel at a load of 75 MW it is 34.47% to 38.14% at a load of 100 MW

Analysis of Brayton Cycle Efficiency at 100 MW Load Before and After Overhaul of Unit 1 Block 1 At PLTGU PT. PLN Nusantara Power Up Gresik Muhammad Ridwan; Fahri Wibisono
Asian Journal of Social and Humanities Vol. 2 No. 7 (2024): Asian Journal of Social and Humanities
Publisher : Pelopor Publikasi Akademika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59888/ajosh.v2i7.281

Electricity is one of the most important needs in everyday life due to technological advances. So various efforts are needed to increase electricity production, one way is to build a power plant that can produce productive electricity so that this happens, one way to determine electricity productivity is the value of cycle efficiency. If the value of the cycle efficiency is higher in a generator, then the PLTG performance will be maximized. And if the cycle efficiency value gets smaller, it can be said that the PLTG's performance is not good. Therefore, to maintain PLTG performance, it is necessary to carry out an overhaul to maintain optimal PLTG performance. In this study using cycle efficiency to determine the increase in efficiency before and after overhaul at a load of 100 MW and the causes, after analyzing the efficiency of the brayton cycle increased from 41% to 42%, the cause was a decrease in turbine efficiency from 74 to 91% and compressor efficiency from 73 to 82% after overhaul the increase affected fuel consumption so that the requirement of kcal/kwh decreased to 3196.4 kcal/ Kwh

Analysis of The Effect of Fuel Switching on The Thermal Efficiency of PLTG Unit 1.3 PT. PLN Indonesia Power Priok PGU Muhammad Ridwan; Rachmat Adi Gumelar
Asian Journal of Social and Humanities Vol. 2 No. 5 (2024): Asian Journal of Social and Humanities
Publisher : Pelopor Publikasi Akademika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59888/ajosh.v2i5.242

This study discusses the topic of thermal efficiency analysis in gas turbines. This study aims to determine the effect of using LNG and HSD fuel on the value of thermal efficiency. Therefore, the actual brayton cycle calculation method is used. This research is doing data processing using software, namely Microsoft Excel, Engineering Equation Solver (EES) and Cycle Tempo. Based on the results of the calculations that have been carried out, the thermal efficiency at a load of 75 MW with LNG fuel is 37.96% to 44.62% at a load of 100 MW and with HSD fuel at a load of 75 MW it is 40.61% and 45.60% at a load of 100 MW. Then in the EES simulation results with LNG fuel at a load of 75 MW it is obtained 37.51%, and 41.96% at a load of 100 MW. whereas with HSD fuel at a load of 75 MW it was obtained 41.76% and 46.15% at a load of 100 MW, and also the results of the cycle tempo simulation with LNG fuel at a load of 75 MW were 32.56% to 37.43% at a load 100MW. Then with HSD fuel at a load of 75 MW it is 34.47% to 38.14% at a load of 100 MW

Analysis of Brayton Cycle Efficiency at 100 MW Load Before and After Overhaul of Unit 1 Block 1 At PLTGU PT. PLN Nusantara Power Up Gresik Muhammad Ridwan; Fahri Wibisono
Asian Journal of Social and Humanities Vol. 2 No. 7 (2024): Asian Journal of Social and Humanities
Publisher : Pelopor Publikasi Akademika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59888/ajosh.v2i7.281

Electricity is one of the most important needs in everyday life due to technological advances. So various efforts are needed to increase electricity production, one way is to build a power plant that can produce productive electricity so that this happens, one way to determine electricity productivity is the value of cycle efficiency. If the value of the cycle efficiency is higher in a generator, then the PLTG performance will be maximized. And if the cycle efficiency value gets smaller, it can be said that the PLTG's performance is not good. Therefore, to maintain PLTG performance, it is necessary to carry out an overhaul to maintain optimal PLTG performance. In this study using cycle efficiency to determine the increase in efficiency before and after overhaul at a load of 100 MW and the causes, after analyzing the efficiency of the brayton cycle increased from 41% to 42%, the cause was a decrease in turbine efficiency from 74 to 91% and compressor efficiency from 73 to 82% after overhaul the increase affected fuel consumption so that the requirement of kcal/kwh decreased to 3196.4 kcal/ Kwh

Designing Beam Capture Settings For Solar Power Plants Muhammad Ridwan; Arief Suardi N.C
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 01 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i01.865

Solar Power Plant (PLTS) absorbs solar energy and is adjusted to the change in circulation from 06.00 in the morning to 17.00 in the afternoon. This requires adjustment to the installation of a solar power plant so that energy capture can be optimal; this adjustment uses a sunlight capture tool called Suntracker. The main tools are in the form of movers, timers and work steps that can be dragged. Based on the testing results and discussion of the overall design of solar trackers, namely. The highest current measurement results in stationary solar cells (static) occur at 11.00 WIB, which is 0.23 A. The highest current measurement results on solar trackers also occur at 10.00 WIB, 0.25 A. The highest voltage measurement in stationary solar cells occurs at 10.00 WIB, which is 14.2 volts. Moreover, the highest voltage measurement results on the solar tracker occurred at 10.00 WIB, which is 20.3 volts.

Analisis Pengaruh Compressor Washing terhadap Efisiensi Thermal pada Turbin Gas PLTGU Blok 3.3 UP Muara Tawar dengan Pendekatan Sankey Diagram Adam Wirya; Muhammad Ridwan
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.10231

Gas turbines are one of the primary technologies in power generation due to their ability to produce energy quickly and efficiently. However, the performance of gas turbines can decline over time due to fouling on the compressor, which negatively impacts the thermal efficiency of the system. One common maintenance method to address this issue is compressor washing. This study aims to analyze the impact of compressor washing on the thermal efficiency of gas turbines at PLTGU UP Muara Tawar Block 3.3 and to identify the influencing factors, using the Sankey diagram approach. The study uses both primary and secondary data collected between March and August 2024. The results show a slight improvement in thermal efficiency after compressor washing, from a range of 12.319%–13.215% to 12.295%–12.811%. The Sankey diagram reveals an increase in net output and a reduction in compressor work after cleaning. The main factors affecting thermal efficiency include compressor fouling, ambient temperature variation, and the non-operational status of the HRSG unit during the observation period. These findings confirm that compressor washing contributes to restoring gas turbine performance and enhancing overall system efficiency. Keywords: Gas Turbine, Thermal Efficiency, Compressor Washing, Sankey Diagram

ANALYSIS OF THE EFFECT OF LOAD VARIATIONS ON THE THERMAL EFFICIENCY OF THE MUARA KARANG PLTG GAS TURBINE Anugerah Banjarnahor; Hendri; Muhammad Ridwan
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.10393

Gas turbines are one type of power plant with high flexibility, but their performance is greatly affected by variations in operating load. This study aims to analyse the effect of load variations on the thermal efficiency of Gas Turbine Unit 1.2 at the Muara Karang Gas Power Plant under three load conditions, namely 70 MW, 80 MW, and 90 MW. Actual operational data was used to calculate component work (compressor, combustion chamber, and turbine) and cycle thermal efficiency using thermodynamic calculation methods based on the Brayton Cycle. The calculation results were validated using Cycle Tempo and EES (Engineering Equation Solver) software with an average deviation of <5%. The results show that thermal efficiency increases as the operating load increases. At a load of 70 MW, the thermal efficiency was recorded at 30.30%, increasing to 30.76% at a load of 80 MW, and reaching a peak of 31.72% at a load of 90 MW. These findings prove that gas turbines operate most efficiently at loads close to their maximum capacity, so that operating at optimal loads can reduce specific fuel consumption and improve the energy efficiency of the plant.

Analisis Efisiensi Termal Sebelum dan Sesudah Overhaul Turbin Inspection Di PLTGU Blok 3 Unit 2 PT PLN Nusantara Power UP Gresik Muhammad Naufal Hardiansyah; Muhammad Ridwan
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 2 (2026): Jurnal Armatur (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i2.11194

This study analyzes the thermal efficiency performance of a Combined Cycle Power Plant (PLTGU) at PT PLN Nusantara Power, Gresik Generation Unit, focusing on Gas Turbine GT 3.2 in Block 3 Unit 2. The objective is to compare turbine performance before and after an overhaul (Turbine Inspection/TI). The research is driven by increasing electricity demand and the gradual degradation of gas turbine components due to operating hours, such as fouling and mechanical wear, which can increase fuel consumption and reduce efficiency. Thermal efficiency, based on the Brayton cycle theory, is used as the main performance indicator and is defined as the ratio of net work output to heat input (Qin). This research applies a field study method with a comparative before–after approach using actual operational data. The analyzed parameters include temperature, pressure, fuel flow rate, and lower heating value (LHV) at loads of 100 MW and 103 MW. Data processing and calculations were performed using Microsoft Excel. The results indicate that thermal efficiency improved after the overhaul. At 100 MW, efficiency increased from 30.5450% to 31.4085%, while at 103 MW it rose from 30.7662% to 31.4256%. Turbine output power also increased by 4.7 MW (4.55%). Overall, the overhaul positively restored turbine performance and improved thermal efficiency.

Analisis Efisiensi Termal PLTGU Muara Karang Blok 2 Menggunakan Sankey Diagram pada Beban 135 MW Muhammad Ridwan
TURBO [Tulisan Riset Berbasis Online] Vol 14 No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i2.4302

The growing demand for electricity requires a proportional increase in power generation to ensure a stable supply for both public and industrial needs. To maintain this stability, Gas and Steam Power Plants (PLTGU) must operate in optimal condition. Thermal efficiency plays a crucial role in determining the plantâ€™s ability to generate electricity effectively. This study aims to analyze the thermal efficiency of PLTGU UP Muara Karang Block 2 at a 135 MW load using the Sankey Diagram approach. This method provides a comprehensive visualization of energy flow and system efficiency. The analysis is based on the First Law of Thermodynamics, focusing on key components such as the compressor, gas turbine, combustor, and other essential elements. The results show an increase in thermal efficiency from 84.92% to 86.40% after an overhaul. This improvement reflects better heat distribution to the main components, indicating more optimal energy conversion. Additionally, the reduction in heat loss signifies an overall enhancement in energy efficiency.

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