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Prosiding SNTTM
Published by BKS-TM Indonesia
ISSN : 30321972     EISSN : 26230313     DOI : -
Core Subject : Agriculture, Engineering,
Aerospace Engineering Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering
Prosiding SNTTM merupakan wadah bagi para peneliti dan praktisi tknik mesin untuk berbagi hasil riset, inovasi, serta perkembangan terbaru dalam bidang teknik mesin dan rekayasa. Prosiding menerima berbagai lingkup makalah terbaik dalam berbagai topik bidang teknik mesin, termasuk namun tidak terbatas pada: - Desain dan Manufaktur - Energi dan Konversi Energi - Material Teknik dan Metalurgi - Mekatronika dan Otomasi - Dinamika, Getaran, dan Kontrol - Transportasi dan Teknologi Otomotif - Termofluida dan Rekayasa Panas - Aplikasi Kecerdasan Buatan dalam Teknik Mesin
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 82 Documents
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Progress and Challenges of grain drying technologies in Indonesia Kosasih, Engkos Achmad; Fauzi, Muhammad Burhanuddin; Soemardi, Tresna Priyana
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/5m959y42

Abstract

Grain drying is a vital postharvest stage in Indonesia to maintain quality, reduce losses, and support food security. High moisture levels in rice, maize, coffee, and soybean increase risks of physical damage, nutrient loss, and mycotoxin contamination, lowering market value and competitiveness. Traditional sun-drying is still common among smallholder farmers due to its simplicity and low cost, but it is weather-dependent, unhygienic, and inefficient. To address these issues, mechanical dryers such as flat-bed, fluidized-bed, rotary, and solar-assisted types have been introduced, improving efficiency and moisture uniformity, yet adoption is constrained by high costs, energy requirements, and limited rural infrastructure. Recent advances include microwave drying and Internet of Things (IoT)-based systems that enable real-time monitoring and promote sustainable energy use. However, challenges remain in affordability, renewable energy access, and farmers’ technological literacy. Future research should focus on developing low-cost hybrid dryers powered by renewable sources, integrating digital technologies for precision control, and exploring strategies to preserve nutritional quality and reduce mycotoxins. Strengthening regional collaboration is also crucial to accelerate the adoption of sustainable drying technologies in Southeast Asia. Overall, advancing grain drying technologies offers significant potential to improve energy efficiency, ensure product quality, and reinforce Indonesia’s food security in tropical conditions.
Kaji performa mesin refrigerasi siklus kompresi uap dengan refrigeran R134a dan refrigeran hidrokarbon sebagai drop-in substitute pada dengan alat ekspansi berbeda Aziz, Azridjal; Parija, Iqbal; Mainil, Rahmat Iman
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/d8day211

Abstract

Refrigerant is an essential working fluid in refrigeration system. However, the use of synthetic refrigerant such as R-134a is now restricted due to its high Global Warming Potential (GWP) value. As an alternative, MC-134 as hydrocarbon refrigerant offers more environmentally friendly solution. This research aims to compare the performance of R-134a and MC-134 in a vapor compression refrigeration cycle system, as well as analyze the influence of expansion devices, namely capillary pipes and Thermostatic Expansion Valves (TEV). The test results show that for R-134a, increasing the length of the capillary pipe, increases the Coefficient of Performance (COP) by 20.83% due to decrease in compression work. In contrast, for MC-134, there is  decrease in COP by 3.35%. TEV provides the best performance with an increase in refrigeration effect of 6.05% and COP of 25.07%. However, TEV is not suitable for MC-134 because the low condensing pressure inhibits the phase change to liquid. In the use of 1.25 m and 1.5 m capillary pipes, MC-134 even has a higher COP of up to 16.65% compared to R-134a. Despite this, MC-134 still shows potential as a replacement for R-134a, with 30% of the mass capable of producing twice the refrigeration effect and 7.52% lower electric current consumption.
Design and thermo-mechanical analysis of a food packaging machine using ansys simulation Putra, Rama Dani Eka; Nuramal, Agus
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/3qk4x982

Abstract

Perancangan mesin pengemasan pangan membutuhkan analisis yang cermat terhadap pengaruh beban termal dan mekanik, mengingat kondisi operasi dapat menimbulkan konsentrasi panas serta tegangan yang berpotensi mempercepat kegagalan struktur. Penelitian ini bertujuan untuk menganalisis perilaku termo-mekanik mesin press pengemasan makanan menggunakan perangkat lunak ANSYS dengan pendekatan Finite Element Analysis (FEA). Simulasi dilakukan untuk mengevaluasi distribusi temperatur, deformasi akibat beban puntir, serta tegangan ekivalen Von-Mises pada rangka mesin. Hasil simulasi perpindahan panas menunjukkan bahwa suhu maksimum mencapai 85,34 °C setelah 120 detik, dengan distribusi panas yang terlokalisasi pada area sekitar poros tengah, sedangkan bagian rangka utama relatif stabil pada suhu 28 °C. Analisis deformasi memperlihatkan adanya perubahan dimensi lokal di sekitar pusat pemanasan, namun tidak menyebar secara signifikan ke seluruh struktur. Sementara itu, simulasi tegangan Von-Mises mengindikasikan tegangan maksimum sebesar 182,45 MPa pada bagian atas rangka, sedangkan bagian bawah hampir tidak menerima tegangan berarti. Temuan ini menunjukkan bahwa mesin memiliki titik kritis pada area tertentu yang rentan terhadap beban kombinasi termal dan mekanik. Penelitian ini memberikan kontribusi dalam pengembangan desain mesin pengemasan pangan yang lebih andal melalui identifikasi area rawan serta rekomendasi perbaikan struktur.
Sistem pendingin gedung 15.5 MWh dengan ice slurry CTES dan solar PV Pamitran, Agus Sunjarianto; Azis, Rizqi Rizaldi; Mulyono, Eko; Yatim, Ardiyansyah; Lubis, Arnas
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jq6wjj06

Abstract

Given the increasing concerns about the environmental impact of fossil fuel-based electricity sources, effective efforts are needed to encourage the use of green energy to meet electricity needs, especially for buildings. Air conditioning systems generally contribute the largest electricity consumption in commercial buildings, so planning an energy conservation system is very important. This study designs a building air conditioning system that uses solar power plants (PLTS) as a power source, by applying the principles of district cooling and cold thermal energy storage (CTS) with ice slurry to optimize the performance of the cooling system. With a case study in a building in Jakarta, Indonesia, this study aims to determine the capacity of the PV system and CTES that can reduce energy consumption and emissions, while considering the costs involved. This study shows 3 CTES charging schemes. In this study, a comparison of several CTES charging schemes shows that the charging scheme using a hybrid power supply is the most cost-efficient option, followed by the off-grid scheme, while the conventional system is the most expensive due to the high cost of electricity. Overall, the CTES system with ice slurry is not only a technological innovation, but also a strategic step towards a more environmentally friendly and energy-efficient building system, where energy needs are balanced with the principle of long-term sustainability.
Effect of corrosion rate and hardness of titanium in Kokubo’s simulated body fluid for orthodontic applications Sanny, Sanny Ardhy; Islahuddin, Islahuddin; Meiki, Meiki Eru Putra; riza, Muhammad Riza Ardiyanto
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/38n0c342

Abstract

Titanium and its alloys are widely recognized as preferred materials for dental implants, particularly in orthodontic applications, owing to their superior corrosion resistance and mechanical performance compared with stainless steel. However, certain limitations remain. In acidic environments, titanium’s corrosion resistance tends to decline. This issue is of particular relevance in West Sumatra, where local dietary habits include frequent consumption of acidic and high-fat foods such as rendang, gulai and various fried dishes. Hence, it is important to evaluate the corrosion behavior of titanium and its alloys under acidic conditions. In this study, four titanium-based materials were investigated: Ti-12 Cr, TNTZ-ST, Ti-64 ELI (Extra Low Interstitial), and Commercially Pure Titanium (CpTi). Immersion tests were performed in Kokubo’s Simulated Body Fluid (SBF) at pH 5.0 for four exposure periods (1, 2, 3, and 4 weeks). The corrosion rate was determined using the weight loss method. Results revealed that CpTi exhibited the highest corrosion rate (0.0985 mm/y) after 4 weeks, while Ti-12 Cr demonstrated the lowest (0.0515 mm/y). Regarding hardness, CpTi reached the highest value (365 HVN at 1 week), whereas Ti-12 Cr recorded the lowest (130 HVN).
Pemanfaatan limbah serbuk gergajian kayu merbau (intsia spp.) sebagai briket biomassa untuk energi rumah tangga Palamba, Pither
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/js983b80

Abstract

This research aims to study the potential of utilizing Merbau sawdust waste as a raw material for biomass briquettes for household energy needs. The methodology applied includes pyrolysis, grinding, and briquette molding, followed by proximate analysis, calorific value analysis, burning test, and thermokinetic analysis using the Arrhenius equation. The study results show that Merbau briquettes have a moisture content of 3.94%, ash 1.98%, volatile matter 34.33%, fixed carbon 59.70%, and a calorific value of 6,567 kcal/kg. The burning test indicates the briquette's capability to heat 3,8 liters of water to boil with a maximum combustion temperature reaching 918 °C. Based on the measured characteristics, briquettes from Merbau sawdust exhibit adequate quality, equivalent to low-calorific coal, and have the potential as an environmentally friendly alternative energy source for the household sector.
Tahapan Dalam Desain Konseptual Mobil terbang Bersayap Tetap Adhitya, Mohammad; Irwansyah, Ridho
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/y76aae85

Abstract

Mobil terbang adalah suatu wahana yang harus mampu beroperasi di jalan raya selayaknya mobil yang kita ketahui secara umum yang wajib memenuhi regulasi mobil raya meliputi dimensi dan hal-hal lain untuk memastikan keselamatan di jalan raya. Mobil terbang di sisi lain saat berfungsi sebagai pesawat terbang relatif tidak dibatasi dalam hal dimensi namun kinerjanya sangat dipengaruhi oleh aspek aerodinamika yang sangat dipengaruhi oleh perbandingan gaya angkat terhadap gaya berat pesawat (lift to weight ratio). Meskipun dinamakan sebagai mobil terbang, namun dari segi teknis dan tahapan desainnya, wahana ini lebih merupakan suatu pesawat terbang yang didesain sedemikian rupa agar dimensi serta sistem roda penopangnya dapat memenuhi fungsi dan regulasi dari suatu mobil. Dalam tulisan ini disampaikan suatu tahapan terstruktur dalam mendesain suatu mobil terbang yang merupakan kombinasi dari parameter-parameter penting suatu desain mobil dan pesawat terbang yang terdiri dari 8 tahapan yaitu 1. Requirements, 2. Weight estimation, 3. Critical performance parameters, 4. Configuration layout, 5. Force analysis due to CG position, 6. Better weight estimation, 7. Performance analysis, dan 8. Optimization. Hasil dari tahapan ini tentunya berupa desain mobil terbang yang dapat memenuhi fungsinya sebagai mobil yang memenuhi regulasi jalan raya dan sebagai pesawat terbang.
Digital transformation in geothermal power plant operations Anugerah, Arfiandi; Meliala, Efrata
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jctxg786

Abstract

This paper explores the digital transformation of geothermal power plant operations through the Geothermal Operations Optimization, Reliability, and Efficiency using Machine Learning (GOOREMALE) framework. Geothermal operations have traditionally relied on manual data collection, periodic reporting, and expert-based analysis, which often delay decision-making process and extend its cycle times. These inefficiencies create risks of reduced output, higher operational costs, and slower responses to disturbances, underscoring the need for a structured, data-driven solution. The objective of this research is to evaluate whether the integration of digitalization and machine learning can reduce operational decision-making cycle time and enhance monitoring capabilities. The methodology adopts a multi-phase approach beginning with the digitization of operational log sheets into a centralized database management system (DBMS), followed by the development of Business Intelligence dashboards for real-time visualization, and advancing toward the application of machine learning models. Specifically, Locality Sensitive Hashing (LSH), OPTICS clustering, and Root Mean Square Error (RMSE) evaluation were applied to detect anomalies, forecast deviations, and provide decision support. The results show that GOOREMALE reduced decision-making cycle time by approximately 50%, improved the accuracy of anomaly detection, and delivered real-time dashboards that enhanced situational awareness across operational teams. These outcomes confirm that digital transformation can significantly strengthen the timeliness and accuracy of geothermal operational decision-making. The main contribution of this research is the establishment of a practical and replicable framework for digital transformation in geothermal plant operations, while its boundary is limited to decision-making efficiency without yet covering long-term reliability, subsurface management, or predictive maintenance.
A Review: Thermoelectric cooler application for portable beverage cooler Fuad, N; Aziz, Azridjal; Iman Mainil, Rahmat
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/94ctf896

Abstract

Thermoelectric cooler (TEC) based on the Peltier effect offers a compact, silent, and environmentally friendly portable cooling solution. It can be used to preserve perishable food, medicine on remote area with limited or no electricity. This review explores experimental and theoretical findings from studies published between 2015 and 2025, with focus on portable beverage applications. Key material advances (average ZT ≈ 1–1.4) are traced, dominant thermal management bottlenecks are identified, and emerging optimization methods including artificial intelligence-assisted design are discussed. The system coefficients of performance (COPs) reported for one-stage beverage coolers have remained modest (0.2–0.9). However, recent prototypes have demonstrated the capability to achieve drink temperatures below 5 °C from 25 °C ambient within 30 minutes. These prototypes also show promising pathways for higher efficiency through hybrid photovoltaics, advanced heat sinks, and adaptive control.
Characteristics of hybrid composites of coconut coir and arenga fibers on the alkalization process using NaOH Istiqlaliyah, Hesti
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/1wdcge78

Abstract

The use of composite materials has been growing rapidly, particularly for natural fiber-reinforced composites, due to their environmentally friendly properties. This study aims to investigate the characteristics of hybrid composites based on coconut coir and arenga fibers subjected to an alkalization treatment using sodium hydroxide (NaOH) with concentrations of 5% and 10% and immersion times of 2 hours and 6 hours. The alkali treatment was carried out to improve fiber tensile strength by removing hemicellulose, lignin, and impurities from the fiber surface, thereby enhancing interfacial bonding with the polymer matrix. The results showed that fibers treated with 10% NaOH for 2 hours achieved the highest tensile strength of 62.30 MPa, compared to untreated fibers with 38.26 MPa. The fibers with the highest strength were then fabricated into composites with a volume fraction of 30% fiber and 70% matrix, consisting of a 50:50 ratio of coconut coir and arenga fibers. The hybrid composite exhibited a tensile strength of 1146 MPa, while the untreated composite had 198,43 MPa. Based on the tensile test results of both single fibers and composites, it can be concluded that alkali treatment significantly improves the tensile strength of the material.

Page 7 of 9 | Total Record : 82

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