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Yunita Djamalu
Universitas Negeri Gorontalo
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Journal : Journal Of Renewable Energy Engineering

 1 
SIMULASI SISTEM PLTU ANGGREK 2 X 25 MW MENGGUNAKAN SOFTWARE CYCLE TEMPO DENGAN VARIASI BEBAN TURBIN25%, 50%, 75% DAN 100% Harlan Djabal; Romi Djafar; Yunita Djamalu; Burhan Liputo
Journal Of Renewable Energy Engineering Vol. 1 No. 1 (2023): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v1i1.8

Abstract

Pembangkit listrik tenaga uap (PLTU) Unit Anggrek Merupakan PLTU yang mulai dibangun sejak tahun 2007 dan mulai beroperasi pada tahun 2019 dengan kapasitas 2 X 25 MW. Sejak di resmikan PLTU Anggrek Adalah salah satu pembangkit yang mendistribusikan kebutuhan listrik di provinsi Gorontalo, Sehingga saat ini sudah jarang terjagi pemadaman listrik. Di PLTU Anggrek menunjukan bahwa belum pernah dilakukan evaluasi performa sistem PLTU sesuai data heat balance and mass diagram. Adapun Tujuan dari penelitian ini adalah mendapatkan pemodelan simulasi sistem PLTU anggrek menggunakan simulasi Cycle Tempo dan mengetahui performa sistem PLTU tersebut dengan memvariasikan beban Turbin. Untuk mendapatkan hasil penelitian dilakukan pemodelan menggunakan simulasi cycle tempo 5.1 dengan parameter input berdasarkan data heat balance. Berdasarkan penelitian dipeoleh hasil efisiensi gross: 10,5%, dan nett : 10,01.% pada beban Turbin 25%. Sedangkan pada pembebanan turbin 50% diperoleh masing-masing Efesiensi gross: 21,02%, dan nett sebesar 20,03%. Selanjutnya pembebanan 75% didapatkan berturut-turut efieinsi Gross 31,5%, net: 30,1%. Dan pembebanan maksimal sebesar 100% mendapatkan gross: 42,053,net: 40,249%.
ANALISIS PERFORMA SISTEM PLTU ANGGREK KAPASITAS 2X25 MW MENGGUNAKAN BAHAN BAKAR BATUBARA DENGAN BEBAN TURBIN 100% Zulkifli Ismail; Romi Djafar; Yunita Djamalu; Burhan Liputo
Journal Of Renewable Energy Engineering Vol. 1 No. 1 (2023): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v1i1.13

Abstract

Pembangkit listrik tenaga uap(PLTU) Unit Anggrek Merupakan PLTU yang mulai dibangun sejak tahun 2007 dan mulai beroperasi pada tahun 2019 dengan kapasitas 2 X 25 MW. Sejak di resmikan PLTU Anggrek Adalah salah satu pembangkit yang mendistribusikan kebutuhan listrik di provinsi Gorontalo, Sehingga saat ini sudah jarang terjagi pemadaman listrik. Di PLTU Anggrek menunjukan bahwa belum pernah dilakukan evaluasi performa sistem PLTU sesuai data heat balance and mass diagram. Adapun Tujuan dari penelitian ini adalah mendapatkan pemodelan simulasi sistem PLTU anggrek menggunakan simulasi Cycle Tempo dan mengetahui performa sistem PLTU tersebut dengan memvariasikan beban Turbin.Untuk mendapatkan hasil penelitian dilakukan pemodelan menggunakan simulasi cycle tempo 5.1 dengan parameter input berdasarkan data heat balance. Berdasarkan penelitian dipeoleh hasil efisiensi gross: 10,5%, dan nett : 10,01.% pada beban Turbin 25%. Sedangkan pada pembebanan turbin 50% diperoleh masing-masing Efesiensi gross: 21,02%, dan nett sebesar 20,03%. Selanjutnya pembebanan 75% didapatkan berturut-turut efieinsi Gross 31,5%, net: 30,1%. Dan pembebanan maksimal sebesar 100% mendapatkan gross: 42,053,net: 40,249%.
PEMANFAATAN LIMBAH ORGANIK SEBAGAI ENERGI ALTERNATIF MENGGUNAKAN REAKTOR GASIFIKASI DOWNDRAFT Hasan Harun, Ervan; Ilham, Jumiati; Djafar, Romi; Djamalu, Yunita
Journal Of Renewable Energy Engineering Vol. 2 No. 2 (2024): Journal Of Renewable Energy Engineering (Oktober)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v2i2.43

Abstract

Organic waste from coconut shells, corn cobs, candlenut shells, and lamtoro wood is often found in the Gorontalo region. The gasification of organic waste has the potential to reduce organic waste and produce gas for various applications, including heating, power generation, and industrial raw materials. The research aims to determine the gas composition of the downdraft gasification process from organic waste from coconut shells, candlenut shells, corn cobs, and lamtoro wood, to determine the rate of fuel consumption, and to determine the calorific value. The method used is an experimental method. Test results using a downdraft gasifier reactor with 5 kg of fuel. The average H2 value obtained from the test results for coconut shells was 12.46%, candlenut shells 13.01%, corn cobs 9.3%, and lamtoro wood 15.95%, the highest H2 value from several of these samples was obtained from lamtoro wood with the highest percentage was 15.95%, the average O2 value obtained was coconut shell 8.86%, candlenut shell 6.37%, corn cob 2.61%, lamtoro wood 5.22%, the average CH4 value was shell coconut 7.88%, candlenut shell 4.05%, corn cob 8.03%, lamtoro wood 7.32%, average CO value for coconut shell 0.56%, candlenut shell 0.05%, corn cob 10 .71%, lamtoro wood 0.05% while the average N2 value obtained was 70.21% coconut shell, 76.49% candlenut shell, 69.25% corn cob, and 71.44% lamtoro wood. The findings compare four organic wastes as alternative energy using a downdraft gasification reactor. The conclusion from this research is that the best gas composition is from corncob organic waste with H₂, CH₄, and CO of 28.05%, the longest burning rate on corncob samples is 23.11 grams/minute and the highest calorific value test is on lamtoro wood samples with results reaching 4,340 cal/gram.
PERBANDINGAN DESAIN PENGERING BERBASIS EFEK RUMAH KACA VARIASI CEROBONG PENGHAWAAN: IMPLEMENTASI PADA MASYARAKAT LOKAL Djamalu, Yunita
Journal Of Renewable Energy Engineering Vol. 2 No. 2 (2024): Journal Of Renewable Energy Engineering (Oktober)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v2i2.45

Abstract

Greenhouse effect-based dryers are an efficient and environmentally friendly technological solution to improve the quality and added value of agricultural and fishery products. This research aims to analyze the comparative technical and economic performance of three variations of ventilation chimney designs, namely conventional, thermal, and multidirectional, in their implementation in local communities. Research methods include field experiments to measure technical parameters, such as temperature, humidity, drying time, and airflow speed, and economic analysis to calculate investment costs, payback period, and net profits. The results showed that the thermal chimney provided the best performance with an average temperature of 50°C, drying time of 21 hours, and high airflow efficiency, suitable for rural areas. Multidirectional chimneys are more flexible against unstable wind conditions, making them ideal for coastal areas. This technology is environmentally friendly with a reduction in carbon emissions of up to 1.2 tonnes of CO₂ per year per unit. The novelty of this research lies in the combination of innovative design, in-depth economic analysis, and the application of technology that is adaptive to local needs and challenges, making it relevant and beneficial to society and the environment. In conclusion, a greenhouse effect-based dryer with a ventilation chimney design is a technology that is feasible to apply to increase productivity, environmental sustainability, and the welfare of local communities.
Co-Authors Burhan Liputo Burhan Liputo Burhan Liputo Burhan Liputo Burhan Liputo Burhan Liputo Burhan Liputo Dayuwanto Harun Dimas Ishak Eska Hiola Evi Sunarti Antu Fitriyan Giu Fuad Pontoiyo Haris Abdullah Hariyanto Upingo Upingo Harlan Djabal Harun Doe Hasan Harun, Ervan Hendra Pangalima Iqrima Staddal Jamhari Jamhari Jefrin H. Antungo Jumiati Ilham Liputo, Burhan Mahmud Bahsoan Max Kurniawan Moch. Sabri Entengo Mohamad Rizki Buheli Muhammad Zahri Abdul Rahim Riklan Tahapali Rion Djafar Romi Djafar Siradjiddin Haluti Siradjuddin Haluti Sjahril Botutihe Syamsu Akuba Udjaili, Sunandar Wahyudin van Gobel Zulkifli Ismail Zulzain Ilahude