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All Journal Jurnal Rekayasa Mesin INTEGER: Journal of Information Technology
Radissa Dzaky Issafira
UPN "Veteran" Jawa Timur
Computer Science & IT Mechanical Engineering

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Inovasi Teknologi Pengaduk Serbuk Botanikal Vakum Pengering Berbasis IoT dan Digitalisasi Pemasaran Produk Minuman Herbal Teguh Soedarto; Radissa Dzaky Issafira; Gusti Eka Yuliastuti
INTEGER: Journal of Information Technology Vol 8, No 2: September 2023
Publisher : Fakultas Teknologi Informasi Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.integer.2023.v8i2.5012

Abstract

Pada era digitalisasi seperti saat ini, suatu usaha akan kalah bersaing jika hanya mengandalkan proses produksi dan pemasaran secara konvensional saja, perihal ini membuat sebuah brand atau merek harus memiliki strategi produksi dan pemasaran yang tepat dan mampu menyampaikan pesannya secara konsisten pada setiap media–media yang digunakan. Si Mbok adalah salah satu bisnis rumahan di Kabupaten Malang dengan Nomor SIUP NIB3008220041614 P-IRT2103507010729-27 yang menjual minuman herbal modern dengan aneka rasa rempah pilihan. Produk ini juga memiliki kualitas yang baik dari segi rasa maupun bahan yang digunakan serta juga memiliki inovasi yang unik karena cukup berbeda dengan minuman herbal yang biasanya dijual dipasaran. Si Mbok belum memiliki strategi khusus untuk memasarkan minuman herbal modernnya serta belum konsisten dalam menyampaikan pesan–pesannya pada media yang digunakan. Hal ini menyebabkan masyarakat pada umumnya belum mengetahui adanya keberadaan minuman herbal modern tersebut serta membuat masyarakat tidak mengetahui manfaat yang akan diperoleh saat mengkonsumsi minuman herbal modern ini. Selain masalah pemasaran dan promosi, proses produksi pembuatan produk minuman seduh yang berupa serbuk instan dilakukan dengan konvensional mengaduk selama 2,5 jam diatas kompor, mengeringkan bahan rempah menunggu matahari dan pengemasan secara manual seadanya sehingga kapasitas produksinya sangat rendah, tergantung faktor cuaca dan kemasan tidak dapat bertahan lama. Inovasi teknologi dibuat berbasis IoT sehingga mudah dikontrol dari manapun, tidak perlu menunggu terlalu lama di depan alat.
The Effect of Coal and Sawdust Co-Firing on Boiler Efficiency with the Direct and Indirect Calculation Methods at PT PLN Nusantara Power Unit 2 Radissa Dzaky Issafira; Muhammad Daru Fatkhur Rizki; Mokh Ausin Al Qoroni; Vrischo Candra Kumara Wardana
Jurnal Rekayasa Mesin Vol. 20 No. 2 (2025): Volume 20, Nomor 2, August 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i2.6548

Abstract

The increasing demand for electricity in Indonesia has led to a rise in fossil fuel consumption, resulting in negative environmental impacts. As part of its commitment to achieving net zero emissions by 2060, the Indonesian government has begun promoting the application of co-firing technology that utilizes biomass as an alternative fuel. One promising type of biomass is sawdust, which can be blended with coal in the combustion process. This study aims to analyze the effect of sawdust blending on boiler efficiency using both direct and indirect calculation methods. The results show that a fuel composition of 55% low-rank coal (LRC), 40% medium-rank coal (MRC), and 5% sawdust produces a boiler efficiency of 86.8% using the direct method and 85.2% using the indirect method. Additionally, this blend generates lower emissions compared to a mixture of 80% LRC and 20% MRC. These findings indicate that sawdust, when applied through co-firing technology, contributes to improved combustion efficiency and reduced emissions in coal-fired power plants.  
Analysis of Sawdust and Coal Biomass Fuel Variations on the Efficiency of 660 MW Multistage Turbine Steam Power Plant Mokh Ausin Al Qoroni; Radissa Dzaky Issafira; Muhammad Daru Fatkhur Rizki; Vrischo Candra Kumara Wardana
Jurnal Rekayasa Mesin Vol. 20 No. 3 (2025): Volume 20, Nomor 3, December 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i3.6549

Abstract

The use of biomass as an alternative fuel in power generation systems is an important strategy in supporting the clean energy transition. This study analyzes the effect of variations in the mixture of biomass fuel in the form of sawdust with coal on the efficiency of a 660 MW multistage turbine in a Steam Power Plant (PLTU). The study was conducted experimentally with six variations of sawdust mixture from 0% to 5%. Data were obtained from direct observation and secondary data, then analyzed quantitatively using calculations of isentropic efficiency, turbine power, turbine heat rate, thermal efficiency, and exhaust emissions. The results showed that increasing the percentage of sawdust caused a decrease in the isentropic efficiency of the three types of turbines, namely High Pressure Turbine (HPT) from 85.90% to 83.20%, Intermediate Pressure Turbine (IPT) 98.01% to 96.89%, and Low Pressure Turbine (LPT) from 88.64% to 88.03%, output power from 639.150 MW to 603.525 MW, and thermal efficiency from 45.16%. to 44.04%, as well as an increase in turbine heat rate from 7971.761 kJ/kWh to 8174.373 kJ/kWh. However, flue gas emissions decreased significantly such as SO₂ from 354.898 mg/Nm³ to 11.507 mg/Nm³ and NOₓ from 220.549 mg/Nm³ to 140.324 mg/Nm³, while CO₂ remained relatively stable. The decrease in efficiency is due to the characteristics of sawdust, which has a lower heating value and higher moisture content than coal.
Co-Authors Gusti Eka Yuliastuti Mokh Ausin Al Qoroni Muhammad Daru Fatkhur Rizki Soedarto, Teguh Vrischo Candra Kumara Wardana