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All Journal Jurnal Energi Dan Manufaktur Teknotan: Jurnal Industri Teknologi Pertanian Jurnal Keteknikan Pertanian Jurnal Ilmiah Rekayasa Pertanian dan Biosistem JURNAL ATOMIK Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Makara Journal of Technology
Muhamad Yulianto
Departemen Teknik Mesin Dan Biosistem Institut Pertanian Bogor
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Pemilihan Fluida Kerja pada Pengembangan Organic Rankine Cycle Gaos, Yogi Sirodz; Juarsa, Mulya; Marzuki, Edi; Yulianto, Muhamad
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 1 No. 1 (2015)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.311 KB) | DOI: 10.32832/ame.v1i1.106

Abstract

Studi ini menjelaskan perbandingan 3 fluida kerja yang digunakan dalam pengembangan Siklus Rankine Cycle. Menurut Tabel refrigerant yang sering digunakan, makalah ini menggunakan fluida kerja R134a, R141b dan n-penthane. Analisis menggunakan fluida kerja untuk pengembangan ORC berdasarkan kreteria termodinamika, lingkungan dan ekonomi seperti efesiensi, non-flammability,toksin rendah, tidak ada penipisan ozon dan cost yang rendah. Metode penelitian untuk analisis menggunakan software Cycle Tempo dan penentuan sifat-sifat fluida kerjanya dengan software Refprop. Hasil analisis menunjukkan bahwa efisiensi sistem adalah 8,42%, 11,79% dan 16,92% secara berturut-turut untuk R134a, R141b dan n-penthane pada temperature inlet 160oC. Sehingga dapatdisimpulkan bahawa penggunaan fluida kerja terbaik adalah fluida R134.
Performance profile of Cold Storage Using R32 as Refrigerant for Traditional Fishing Boat with Photovoltaic as Energi Source Suhengki, Suhengki; Manik, Henry Munandar; Hartulistiyoso, Edy; Sumantri, Willi; Yulianto, Muhamad
Jurnal Keteknikan Pertanian Vol. 12 No. 2 (2024): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.2.184-203

Abstract

This paper discusses the performance of cold storage using R32 refrigerant. R32 is one of the recommended refrigerant with the main advantage low ODP and GWP (Global Warming Potential) value of around 0 and 675. However, because of this refrigerant classified as a new refrigerant, the implementation is limited to air conditioning and heat pump. In this paper, R32 will be tested for cold storage applications. The cold storage performance will be studied about the achieved temperature, power consumption, cooling capacity and Coefficient of Performance without load. The testing was carried out in 2 ways, cold storage testing on a lab scale and direct testing on a 5 GT fishing boat. The performance results show that both tests on a lab scale and tests directly on a fishing boat without a load can reach a cold storage room temperature of -18oC. Meanwhile, the compressor power consumption supplied by photovoltaic is 0.653-0.776 kW. Based on the test results, shows that R32 has a positive possibility of being applied to cold storage.
Theoretical Study of Shell-and-Tube Heat Exchanger Effectiveness on Batch Drying of Sawdust Utilizing Waste Heat from Organic Rankine Cycle Yahdi, M. Arief; Hartulistiyoso, Edy; Yulianto, Muhamad
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.71-82

Abstract

Steam power plant has flue gas that are generally discharged into environment. The exhaust gases from internal combustion contain thermal energy that can be utilized for drying processes, which can enhance the energy efficiency of the Organic Rankine Cycle (ORC) system. This research focuses on the use of waste heat for drying applications through heat exchangers. The objective of this work is to study the performance of shell-and-tube type heat exchanger in utilizing waste heat from an ORC system for drying applications. Experimental data was obtained by varying the air velocity of the dryer to validate the numerical simulations. The results showed that increasing air velocity in the heat exchanger caused a decrease in heat exchanger outlet temperature, water vapor mass, and heat exchanger effectiveness. The decrease in these parameters reduces heat transfer required for drying, so water mass rate of material decreases and drying time gets longer. Validation of simulation and experiment data for outlet heat exchanger temperature was determined by MAPE value of less than 20% which means good prediction model. Keywords: Air velocity, Drying, Effectiveness heat exchanger, Exhaust gas, Heat exchanger.
ORC Performance Study with R32 and R134a Using Biomass as an Energy Source Al Azhari, Lalu Muh Fathul Aziz; Yulianto, Muhamad; Hartulistiyoso, Edy
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.118-129

Abstract

The use of fossil energy as the main source of primary energy reached 84.7%, with electricity consumption in Indonesia of 1,173 kWh/capita, dominated by fossil fuels (67.21%). The decline in fossil energy reserves requires the development of alternative technologies such as the Organic Rankine Cycle (ORC) that can operate at low to medium temperatures (60°C-200°C). This research was carried out in 2 ways, experiment, and simulation. Experiments were carried out to determine the temperature that can be generated in the evaporator of ORC from the flue gas flow from burning biomass. Simulations were carried out to evaluate the performance of the ORC cycle with working fluids R32 and R134a and the contribution of CO2 to the environment using the LCCP (Life Cycle Climate Performance) method. The analysis involves measuring the outlet temperature of the evaporator. The research results show that the validation for predicting the output temperature of the ORC evaporator is very good with a Mean Absolute Percentage Error (MAPE) value of <10%. Simulation results show that in this study, R32 performed better than R134a, with a net power of 0.13 kW at a temperature of 86.83℃. LCCP analysis results show that R32 has lower direct emissions than R134a, with better LCCP values. Keywords: LCCP, Organic rankine cycle, R134a, R32, Simulation, Work output.
Co-Authors Al Azhari, Lalu Muh Fathul Aziz Dwi Yuliaji Edi Marzuki Edi Marzuki Edy Hartulistiyoso Engkos A Kosasih Engkos Kosasih Engkos Kosasih Henry Munandar Manik Indra Mahlia Indra Mahlia, Indra Irawan Senatosa Irham Faza Kosasih, Engkos Ahmad Lilis Sucahyo M. Idrus Alhamid Mahlia, Indra Teuku Meurah Mawardi, Haris Mokhamad Nur Khasan Muhammad Alhamid Muhammad Alhamid, Muhammad Muhammad Idrus Alhamid, Muhammad Idrus Mulya Juarsa Nasruddin Dan Nasruddin Yusuf Nasruddin Yusuf, Nasruddin RAHMAT GUNAWAN Rio Ricardi Rio Ricardi, Rio Roy Waluyo Saibun Sitorus Suhengki, Suhengki Sumantri, Willi Tachli Supriyadi Yahdi, M. Arief Yogi Sirod Gaoz Yogi Sirodz Gaos Yogi Sirodz Gaos, Yogi Sirodz