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All Journal Jurnal Teknologi Rekayasa Mesin Sinergi REKAYASA Jurnal Ilmiah Arena Tekstil Metal Indonesia JTERA (Jurnal Teknologi Rekayasa) Jurnal AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Multitek Indonesia : Jurnal Ilmiah Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Community Empowerment Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Teknik Mesin Mechanical Xplore Teknologika SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan) AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin Jurnal Polimesin
Amri Abdulah
Sekolah Tinggi Teknologi Wastukancana
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Analisis Kinerja Kondensor Destilasi Minyak Atsiri Dengan Bahan Baku Daun Cengkeh Kapsitas 200kg Zulfahri Mardiansyah; Agus Supraytno; TB.U. Adi Subekhi; Amri Abdulah
Jurnal Teknologika Vol 15 No 2 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i2.530

Abstract

Essential Oil or Essential Oils is a commodity that has great potential in Indonesia, such as the Cosmetics, Foodand Beverage Medicines industry. Therefore, the author analyzes the performance of the essential oil distillation condenserwith a capacity of 200kg with solutions such as flow. Distillation can be done by 3 methods, namely: Distillation with waterand steam / steam distillation system (water and steam distillation), Distillation with boiling system (water distillation /hydro-distillation), and distillation with direct steam (Direct steam distillation / Dry steam). The Reynolds number showsa value of 73.308. Then the type of fluid flow in the pipe is Turbulent Flow. LMTD provides the average rate of heattransferred accurately and quickly which the author has calculated to get a value of 127.61 K. The type of heat exchangeris so complex that it requires a correction factor (Fc) of 1.056 as a comparison of the actual heat transfer rate with themaximum heat transfer rate in the condensing zone of 1.051K.
Studi Komparatif Getaran Pada Sepeda Motor Saat Kondisi Standar Dan Hasil Konversi Ke Motor Listrik Yadi Heryadi; Adi Harmanda; Ghany Heryana; Amri Abdulah
Jurnal Teknologika Vol 15 No 2 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i2.535

Abstract

A potential solution to mitigate exhaust emissions and air pollution is converting conventional motorcycles into electric ones. This study carried out the conversion of a gasoline-powered motorcycle to an electric motorcycle and analyzed changes in its dynamic characteristics through measurements of the center of gravity, suspension load distribution, and two-degree-of-freedom vibration response. The methodology involved determining the motorcycle’s center of gravity before and after conversion using the moment-of-force approach and conducting vibration analysis with a two-degree-of-freedom undamped model. Tests were performed in unloaded and loaded conditions with a 70 kg passenger to evaluate the effect of additional mass on suspension performance. Before conversion, the motorcycle’s center of gravity was located at x = 526 mm and y = 147 mm, shifting to x = 577 mm and y = 133 mm after conversion. With a passenger, the center of gravity moved from x = 754 mm and y = 704 mm to x = 762 mm and y = 687 mm after conversion. The total load decreased from 267 kg (74.8 kg front and 192.2 kg rear) to 239.6 kg (66.9 kg front and 172.7 kg rear). The vibration analysis revealed that the main natural frequency slightly increased from ω₁ = 19.507 rad/s (≈3.10 cps) to ω₁ = 19.654 rad/s (≈3.12 cps), while the secondary frequency remained stable at ω₂ = 4.52 rad/s (≈0.71 cps). The amplitude ratio changed marginally from (A/B) = 6.028 m/rad to 6.088 m/rad. Overall, the conversion does not induce significant additional vibration, indicating that the structural dynamics remain stable. However, fine-tuning of battery placement and suspension stiffness is recommended to optimize stability and ride comfort.
Pengaruh Modifikasi Pipa Pendingin Terhadap Efektivitas Induced Draft Cooling Tower LBC-50 Muhammad Fairuz Naufal; amri abdulah; Yadi Heryadi; Apang Djafar Shieddieque; Dede Ardi Rajab; Sri Suhartini
Jurnal Teknologika Vol 15 No 2 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i2.540

Abstract

This study aims to analyze the performance enhancement of an induced draft cooling tower through modifications to the water distribution piping line, as well as to evaluate the thermal and hydraulic performance before and after modification. The initial system exhibited relatively low cooling effectiveness due to uneven water distribution and limited heat transfer between air and water within the tower. Therefore, the piping layout was redesigned to improve flow uniformity, enlarge the air–water contact area, and minimize heat losses, thereby enhancing overall cooling efficiency. The experimental tests were conducted under identical operating conditions with an inlet water temperature of 38 °C. The results showed that the outlet water temperature decreased from 33.78 °C (before modification) to 28.95 °C (after modification). The range increased from 5.17 °C to 9.12 °C, while the approach decreased from 4.68 °C to 2.61 °C, indicating a more effective cooling process approaching ideal conditions. Furthermore, the cooling capacity showed a substantial increase from 21,717.4 kW to 61,515.1 kW, signifying that the modified cooling tower can dissipate a greater amount of heat and support higher cooling demands in industrial operations. In addition, the system effectiveness improved from 52.45% to 77.58%, demonstrating a significant enhancement in heat transfer efficiency as a result of improved fluid distribution. On the other hand, the total head loss increased from 39.11 m to 63.71 m, indicating higher flow resistance due to the new configuration, but it remained within acceptable limits. Overall, the study concludes that modifying the piping line in the induced draft cooling tower significantly improves thermal performance, cooling effectiveness, and capacity, making the redesigned configuration a viable approach to increase the efficiency of large-scale industrial cooling systems..
Analisis Efisiensi Pembakaran pada Burner Berbahan Bakar LNG dalam Menghasilkan Uap Panas Vini Noviani; Tarya; Yosa Nizar Fernanta; Choirul anwar; Amri Abdulah; Irwan Suriaman
Jurnal Teknologika Vol 15 No 2 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i2.541

Abstract

The burner in the Continuous Sheet Line (CSL) machine plays a crucial role in generating heat for the steel production process. However, under operational conditions, problems such as explosion and imperfect combustion are often found due to imperfect air-gas ratios. This study aims to analyze the performance of LNG-fueled burners in CSL furnaces, evaluate the influence of Air Flue Ratio (AFR), air and gas distribution on combustion efficiency in each zone, and assess the role of casing materials as insulators on furnace thermal efficiency. The data studied included gas and air pressure, flow rate, furnace temperature, and LNG consumption. Calculations are performed to determine gas flow, airflow, Qinput, Qthermal, AFR, and burner efficiency in each zone (H2-D and H2-W). In addition, thermal analysis was performed on various insulating materials such as ceramic fiberboard, calcium silicate, and micropore silica to assess their effect on heat loss due to conduction and radiation. The results show that burner efficiency is not always directly proportional to the theoretical AFR value. In the H2-D zone with a relatively high AFR (12.55–15.56), the efficiency reached 69%–82%, while in the H2-W zone with a lower AFR (10.86–11.96) the efficiency decreased to 59%–63%. In addition, in some zones such as zones 1, 7, and 8, there is an aberration of the air-gas ratio from the ideal value, with the average airflow being lower than the theoretical standard. From the thermal side, the use of insulation materials with low conductivity such as microporous silica is able to reduce heat loss by more than 80% compared to standard materials. Increased insulation thickness has also been shown to reduce heat loss by up to 50%, especially in areas with high heat exposure.
Co-Authors Abduh Al Afgani Adi Harmanda Afgani, Abduh Al Agung Maulana Rahmat Agus Solehudin Agus Suprayitno Agus Supraytno Ahmad Fauzi Amin Rais Aminanda, Yulfian Amir Amir Amir Amir Amir Amir Ananda Duta Suhendar Anjar Prasetyo Anwar Ilmar Ramadhan Ardi Rajab, Dede Aries Abbas Aris Budiyanto Bachtiar, Mochamad Faisal Choerul Anwar Choirul Anwar Choirul Anwar Choirul Anwar Dani, Muhamad Dede Ardi Rajab Dede Ardi Rajab Dede Ardi Rajab Dede Ardi Rajab Dharmawan, Quewys Alqorni Mada Dodi Muhammad Dodi Mulyadi Dodi Mulyadi Dodi Muyladi Ean Deka Putra Fathan Mubina Dewadi Ghany Heryana Hananto, Agustia Hasanudin Hasanudin Heryadi, Yadi Hilman Nugraha Husna, Agus Iman Nurshahid Ina, Ina afriani Irawan, Adhi Chandra Irwan Suriaman Jaenudin Jatira Jatira Jatira Jatira Jatira Jatira Jatira Jatira Jatira Jatira Jefri Jafarudin Karyadi Karyadi Karyadi Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin, Khoirudin Kil, Sohn Chang Kurnia, Tata Kusnadi, Akhmad Moch Iqbal Zaelani Mutahar Mohamad Rizkiyanto Mudjianto Ramadhan Cahya Muhamad Ardiansyah Muhamad Taufik Ulhakim Muhamad Taufik Ulhakim Muhamad Wisnu Purnama Muhamad Wisnu Purnama Muhammad Ali Akbar Muhammad Ali Akbar, Muhammad Ali Muhammad Fairuz Naufal Murtalim Murtalim Murtalim Muyladi, Dodi Nana Rahdiana Nana Rahdiana Nazar Fazrin Nefli Yusuf Nur Alam, Deden Prasetyo, Maulana Kukuh Putra, Ean Deka Rag, Yoon Jung Rahdiana, Nana Rahmanto, R. Hengki Raja Mualtio Panggabean Rajab, Dede Ardi Renaldi Renaldi Renata Lintang Azizah Revi Kusnadi Ricko Valderama Riswandi, Muhammad Andi Rohman Rohman Rohman Rohman Rohman Rohman Rohman Roy Waluyo Saiful Anwar Saputra Sigalingging, Wanri Satria Prayoga setiawan, Dibyo Setiawan, Yuda Shieddieque, Apang Djafar Shieddique, Apang Djafar Siswanto Siswanto Sofyan, Muhammad Faizal Sohn Chang Kil Solihin Sri Suhartini Stefanus Bambang Jumawan Sukarman Sukarman Sukarman Sukarman - Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Suripto, Heri Tarya Taufik Ulhakim, Muhamad TB. Utami Adi Subekhi TB.U. Adi Subekhi Thiyana Thiyana Tomas Irfani Vini Noviani Wawan Yadi Heryadi Yadi Heryadi Yoon Jung Rag Yosa Nizar Fernanta Yulfian Aminanda Zaidar, Chilfi Zulfahri Mardiansyah