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Teknologika
Published by Sekolah Tinggi Teknologi Wastukancana Purwakarta
ISSN : 16932978     EISSN : 27154645     DOI : https://doi.org/10.51132/teknologika.v12iNo%202
Core Subject : Science, Education, Engineering,
Computer Science & IT Decision Sciences, Operations Research & Management Industrial & Manufacturing Engineering Mechanical Engineering Other
Jurnal Teknologika adalah wadah informasi berupa hasil penelitian, studi kepustakaan maupun tulisan ilmiah yang terkait bidang ilmu Teknik Informatika, Teknik dan Manajemen Industri, Teknik Mesin dan Teknik Tekstil. Terbit dua kali setahun pada bulan Mei dan November. Artikel Jurnal Teknologika dalam versi cetak telah di-online-kan menggunakan Open Journal System (OJS)
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 219 Documents
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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.
Proposed ProModel Implementation to Increase Production Quantity at PT ABC Diki Muchtar; Ramlan Yuniar Velani; Suci Tresna Dewi Handayani
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.v15i2.543

Abstract

This study focuses on initiatives to enhance production quantity at PT ABC. The study applied a simulation-based approach using ProModel software to test various improvement scenarios without interfering with actual production activities. The data collected includes processing time at each workstation and machine capacity, which were used to build an accurate simulation model. The simulation results showed a significant increase in productivity from 35 to 78 units per hour after implementing the second improvement alternative involving additional manpower. This study offers practical and data-driven solutions to enhance production efficiency, reduce cycle time, and eliminate bottlenecks. The findings serve as a valuable reference for companies aiming to implement production line optimization strategies and simulation modeling to support continuous improvement in manufacturing performance.
Negosiasi Sistem Pengadaan Mesin ZZZ dengan Model GameTheory dalam Sebuah Perjanjian Kerjasama Antara PT. XXX dengan SMK YYY Garut Darmawan Yudhanegara
Jurnal Teknologika Vol 16 No 1 (2026): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v16i1.545

Abstract

Penelitian ini membahas sistem negosiasi dalam perjanjian kerja sama antara PT. XXX dan SMK YYY terkait pengadaan Mesin ZZZ dengan pendekatan model Game Theory. Tujuan penelitian ini adalah untuk menganalisis strategi optimal yang dapat digunakan kedua belah pihak agar tercapai kesepakatan yang saling menguntungkan. Proses negosiasi sering kali menghadapi perbedaan kepentingan, nilai tawar, serta keterbatasan informasi yang dapat memengaruhi hasil akhir perjanjian. Melalui penerapan Game Theory, penelitian ini memetakan interaksi strategis antara PT. XXX sebagai pihak penyedia dan SMK YYY sebagai pihak pengguna, dengan mempertimbangkan strategi Nash Equilibrium untuk menentukan titik keseimbangan keputusan. Hasil analisis menunjukkan bahwa penggunaan model Game Theory dapat meningkatkan efisiensi dan transparansi dalam proses negosiasi serta meminimalkan potensi konflik. Temuan ini diharapkan menjadi acuan dalam merancang sistem negosiasi yang lebih rasional, adil, dan berkelanjutan dalam pengadaan mesin industry untuk pelatihan. Penelitian ini menghasilkan kesepekatan yang optimal dari sisi Harga Rp. 125.000.000, dengan spesifikasi kategori portable, gambar yang ramping.
Analisis Kapasitas Produksi dengan Pendekatan Promodel di PT Asahimas Flat Glass tbk Muhammad Ihsan; Diki Muchtar; Davito Arnanta Putra
Jurnal Teknologika Vol 16 No 1 (2026): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v16i1.658

Abstract

This study analyzes production capacity improvement at PT Asahimas Flat Glass Tbk using discrete-event simulation with ProModel. Empirical data were collected through observations, time studies, interviews, and production records to develop and validate a simulation model that reflects actual production conditions. Initial simulations identified a bottleneck in the assembly process, limiting output to 35 units per hour. Two improvement scenarios were evaluated, with the second alternative involving the addition of one operator at the assembly workstation. Results showed a significant increase in production output to 78 units per hour, with a moderate increase in operational costs from Rp 21,100,000 to Rp 24,600,000. These findings confirm that appropriate labor allocation based on simulation analysis effectively improves production performance and manufacturing efficiency.
SISTEM INFORMASI GEOGRAFIS (SIG) UNTUK PEMETAAN POTENSI DAN MANAJEMEN SUMBER DAYA DESA WISATA DI KABUPATEN TASIKMALAYA Cepi Rahmat Hidayat; Teuku Mufizar; Ariel Ivan Al-Hakim; Alfiyah Adwa
Jurnal Teknologika Vol 16 No 1 (2026): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v16i1.663

Abstract

Tasikmalaya Regency, located in West Java Province, has 92 Tourism Villages, but only 5 villages have developed status and the remaining 87 are still in the pilot status. Pilot villages have potential that has not been optimally managed and minimal visits, indicating an urgent need for tools to map and manage this potential so that they can be upgraded to a sustainable tourism destination. This study aims to design and build a Geographic Information System (GIS) for Potential Mapping and Resource Management of Tourism Villages in Tasikmalaya Regency, using the Waterfall software development model. This GIS is designed to visualize geospatial data on locations, assets, and potential categories of 87 pilot villages in an integrated manner. The web-based information system was successfully developed, proven by Black Box testing showing that the application runs as expected. Furthermore, the System Usability Scale (SUS) test produced a score of 75.5 (category "Good"), which indicates a high level of acceptability and ease of use. The implementation of GIS is expected to be a strategic solution for the Tourism Office and tourism village managers to identify, develop, and prioritize potential efficiently, in order to accelerate the improvement of the classification of tourism village status in Tasikmalaya Regency
Analisis Pengendalian Kualitas Produk Drawn Textured Yarn Dengan Metode Statistical Process Control (SPC) di PT. Indorama Polychem Indonesia Muhammad Ihsan; Ade Irpansah
Jurnal Teknologika Vol 16 No 1 (2026): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v16i1.670

Abstract

Kualitas produk merupakan faktor kritis dalam menjaga daya saing industri manufaktur tekstil. PT. Indorama Polychem Indonesia memproduksi benang Drawn Textured Yarn (DTY) yang dalam periode Januari hingga Agustus 2025 mencatat sebanyak 6.214 bobin tidak memenuhi standar dari total 2.293.287 unit produksi. Penelitian ini bertujuan untuk mengidentifikasi jenis cacat dominan, menganalisis penyebabnya, dan memberikan usulan perbaikan menggunakan metode Statistical Process Control (SPC). Data sekunder berupa data produksi dan cacat diolah menggunakan alat-alat SPC meliputi peta kendali-P, diagram Pareto, dan diagram sebab akibat. Hasil peta kendali-P menunjukkan terdapat dua bulan yang berada di luar batas kendali, yaitu bulan Juni dan Agustus. Diagram Pareto mengidentifikasi cacat DP M/C sebagai cacat paling dominan (33%), diikuti XST (23%), LF (22%), dan BF (10%). Analisis diagram sebab akibat mengungkapkan bahwa faktor penyebab utama meliputi kurangnya ketelitian operator (man), ketidakstabilan mesin (machine), kualitas bahan baku POY yang tidak memenuhi standar (material), serta penerapan SOP yang belum optimal (method). Usulan perbaikan disusun menggunakan pendekatan 5W+1H untuk mengatasi akar penyebab tersebut secara sistematis.
Analisis Metode Just In Time (JIT) Terhadap Efisiensi Biaya Persediaan Suction Tube di PT> Rama Mulia Sentosa Rengga Purawa; Muhammad Ali Akbar; Bintang Nidia Kusuma
Jurnal Teknologika Vol 16 No 1 (2026): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v16i1.671

Abstract

This study analyzes the application of the Just In Time (JIT) method toward inventory cost efficiency of suction tubes at PT. Rama Mulia Sentosa, an industrial component distributor in Purwakarta. The main problem faced is high inventory costs due to excessively frequent ordering with small quantities, causing waste in storage costs and trapped working capital. This study aims to analyze inventory management conditions before and after JIT implementation, as well as to determine the effectiveness of the method. Suction tube inventory data for January–December 2025 was processed using three approaches: conventional company policy, Economic Order Quantity (EOQ) method, and Just In Time (JIT) method. The calculation results show that the JIT method produces the lowest total inventory cost of Rp 599,833.31 per year, compared to EOQ at Rp 1,469,285.54 and conventional policy at Rp 7,266,922.75. JIT implementation successfully reduced inventory costs by 91.75% compared to the conventional system, with ordering frequency reduced from 48 to 1 time per year. With an average supplier lead time of 5–6 days, the JIT method is considered highly feasible to be implemented at PT. Rama Mulia Sentosa.
Kajian Integrasi Pembangkit Listrik Tenaga Biomassa Berbasis Limbah Bauksit sebagai Substitusi Energi Fosil pada Operasional PT “X” Alumina Refinery, Kalimantan Barat Dedy Setyo Oetomo; Rani Sri Wahyuni; Farliana Sutartiah
Jurnal Teknologika Vol 16 No 1 (2026): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v16i1.672

Abstract

The increasing energy consumption in alumina refinery industrial operations drives the need for diversification of more sustainable energy sources. PT “X” Alumina Refinery (PT.”X”) in West Kalimantan consumes large amounts of fossil energy for the Bayer process including digestion, evaporation, and calcination stages. This study examines the potential integration of biomass power plants based on bauxite residue (red mud and oversize bauxite) and local West Kalimantan biomass (palm shell, wood powder, and rice husk) as partial fossil energy substitutes through co-firing and gasification technologies. The study was conducted using a techno-economic analysis approach with mathematical models of energy balance, thermal efficiency, and life cycle cost analysis. Results show that total energy potential from bauxite residue and local biomass reaches 319,009 GJ/year (10.11 MW equivalent) within the operational radius, and 485,600 GJ/year (42.7 MW equivalent) at the provincial scale. Implementation of 30% biomass co-firing in existing boilers can reduce coal consumption by 89,250 tons/year and save net energy costs of IDR 87.3 billion per year. Environmental assessment shows CO₂ emission reductions of 198,450 tons/year (63.8% of baseline emissions). Economic feasibility analysis yields NPV = IDR 412.8 billion, IRR = 18.7%, and a payback period of 5.3 years, confirming the project's financial viability and contribution to Indonesia's 2060 Net Zero Emission target
Rancang Bangun Aplikasi Presensi Staf Berbasis Qr Code Menggunakan Metode Prototipe( Studi Kasus : PUSKESMAS Desa Gandasoli ) Arif Rahman Hakim; Bayu Prasetio; Mutiara Andayani Komara
Jurnal Teknologika Vol 16 No 1 (2026): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v16i1.674

Abstract

The advancement of information technology requires health service institutions to enhance administrative effectiveness, particularly in staff attendance management. Currently, the Gandasoli Village Community Health Center relies on a manual attendance system that is inefficient and prone to data errors. This study aims to design and develop a Quick Response Code-based staff attendance application to improve efficiency, accuracy, and transparency in the attendance process. The research employs the prototyping method, encompassing stages of communication, quick planning, quick design modeling, prototype construction, and deployment delivery and feedback. System testing is conducted using black-box testing to ensure application functionality, while usability is evaluated using the System Usability Scale to gather user feedback. The evaluation results yielded an average score of 88, classified within the acceptable category with an excellent rating. These findings demonstrate that the application is user-friendly and feasible for implementation as a staff attendance recording solution at the Gandasoli Village Community Health Center.

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