Prosiding Seminar Nasional Teknoka

Perancangan Saklar Otomatis Menggunakan Microcontroller Berbasis Teknologi Internet of Things (IoT)

Sofia Pinardi — 2025-12-28

Water and electricity are very vital human needs; it’s necessary to use them efficiently. The use of a water reservoir is a solution, and the machine can be set ON OFF using a float indicator. When the machine is ON, it fills the water, and is full, switch OFF and ON again when the water reaches a certain height. The ON-OFF process of the pump machine automatically occurs when the power plugged in; this condition is very dangerous, causing heat, and empty house, switch is always ON. Remote automatic is required. This automatic uses a quasi-experimental method with three stages, namely making a design, conducting tests, and analysing test results. Internet of Things (IoT) technology, based on a microcontroller, can implement an automatic switch for controlling and operating electronic devices remotely online and in real time via mobile (cellphone). The use of a microcontroller will be configured to connect to the Ubidots application.

Optimalisasi Konsumsi Fuel gas pada Boiler dengan Implementasi Sistem Kontrol Oxygen Excess Auto Cascade

Muhammad Taufik Hidayat — 2025-12-27

Boilers accounted for 99.8% of total energy consumption at Badak LNG refinery. Of this usage, 15.1% was lost through blowdown, flue gas, and other boiler inefficiencies. The combustion control system was redesigned using a cascade configuration between the excess-oxygen loop (AIC-1) and the air-flow control loop (FIC-1). Each loop was modeled to obtain transfer functions that were then used to simulate responses to possible input disturbances. The simulation results yielded PID parameters that guided on-site loop tuning. In addition, layered logic protection and new alarms were integrated into the control system. As a result, system reliability was validated under external extremes, including abrupt boiler load increases and decreases. The optimization reduced the fuel-to-steam ratio by 0.6 Nm³/ton with the average boiler load over the past year of 207.6 ton/h, this corresponded to a 0.72% reduction in fuel-gas consumption.

Studi Kelayakan Pabrik Dodecylbenzene Sulfonic Acid dari Sulfur Dioksida Pada Gas Buang PLTU

Putri Zahra At Taufiq — 2025-12-27

The increase in population is directly proportional to the demand for energy. Fossil fuels serve as the main energy source in various industries, including electricity generation through PLTU (Steam Power Plant). These plants produce flue gases containing various components, among which sulfur dioxide (SO₂) is a major pollutant whose concentration is strictly regulated. Utilizing SO₂ as a raw material for producing Dodecylbenzene Sulfonoc Acid – a surfactant compound – can reduce SO₂ emissions from PLTU by up ti 98%. The feasibility of this plant was assessed through a techno-economic study using ROI (Return of Investment), POT (Pay Out Time), and BEP (Break Even Point) analyses. The results indicate an ROI of 35.18%, a POT of 2.18 years, and a BEP of 15.76%, demostrating that the proposed plant is economically feasible to establish.

Identifikasi Anomali dan Dampak Perbaikan Sistem Automatic Transfer Switch (ATS) terhadap Kontinuitas Pasokan Listrik di PT. PLN UP3 Tanjung Priok

Tony Koerniawan — 2025-12-27

Disruptions to the Automatic Transfer Switch (ATS) system can reduce the reliability of the electricity supply, especially for priority customers. This study aims to identify anomalies occurring in the ATS system in the PT. PLN (Persero) UP3 Tanjung Priok area. The methods used include field observations, technical inspections of ATS components, switching time measurements, and estimates of unsupplied energy. Anomalies were found at three locations, namely SMU 110 Jakarta, the Water Management Public Works Sub-Department, and the Sunter Environmental Development Supervisory Agency, with the main damage occurring to the rectifier and ATS module. This damage caused automatic switching failure and interruption of the electricity supply during the repair process, resulting in a total energy loss of 330.640 kWh. After repairs were completed, the entire ATS system resumed functioning with a switching time of < 1 second, in accordance with standards. The results of this study indicate that anomalies in ATS components have a significant impact on the continuity of electricity supply, but can be effectively addressed through appropriate technical repairs.

Pengembangan Komposit Berbahan Dasar Glycerin Pitch untuk Pembuatan BioPlafon Ramah Lingkungan

Fadlin Qisthi Nasution — 2026-01-04

The development and mechanical performance of sand–fly ash composites utilizing glycerin pitch, a biodiesel residue, as a bio-based binder were investigated. Experimental variables included glycerin pitch concentration (10–25% v/v), sand-to-fly ash ratio (35:65–65:35), curing temperature (190–350°C), and curing time (4–24 h). The optimal flexural strength of 1.82 MPa was obtained with 15% v/v glycerin pitch, a 42:58 sand-to-fly ash ratio, and curing at 190°C for 24 hours. Binder concentrations exceeding 15% or curing temperatures above 250°C resulted in disintegration or carbonization, indicating binder degradation. The produced composite demonstrated adequate strength and stability for non-load-bearing applications, including sustainable ceiling panels and interior partitions. These results demonstrate the potential of glycerin pitch as a renewable binder for transforming industrial residues into eco-efficient building materials and advancing circular economy practices in construction.

Pengaruh Porositas pada Perubahan Tekanan Campuran Gas CO₂ dan O₂ Terhadap Batuan Slag Nikel

Zulfikri — 2026-01-04

Porosity in solid materials plays a crucial role in controlling gas pressure behavior and diffusion, particularly in carbon absorption processes within Carbon Capture and Storage (CCS) systems. This study aims to investigate the effect of porosity variations on pressure changes of CO₂–O₂ gas mixtures in nickel slag rocks as potential carbon-absorbing materials. The research method employed a literature review based on various studies discussing the physicochemical characteristics of nickel slag, carbonation mechanisms, and gas interactions within porous structures. Key parameters analyzed include pore size distribution, channel connectivity, and diffusion rate affecting pressure dynamics during gas–solid reactions. The results indicate that highly porous nickel slag experiences a faster pressure drop due to more intensive carbonation reactions, whereas low porosity limits gas transport and slows the process. In conclusion, porosity is a dominant factor governing pressure dynamics and the efficiency of CO₂ capture in nickel slag materials.

Pengujian Komposit Serat Alami

Rizki Romadon Siregar — 2026-01-09

Over the past two decades, driven by growing awareness of environmental sustainability and the availability of renewable resources, the development of natural fiber-reinforced composites has progressed significantly. This review summarizes recent studies on the mechanical behavior of composites reinforced with bamboo, coconut, and oil palm fibers. The discussion focuses on the effects of chemical treatments on tensile, flexural, and impact strength, based on 24 peer-reviewed articles indexed in Scopus and Google Scholar from 2020 to 2025. Results indicate that alkali treatment using 5–10% NaOH improves tensile strength by up to 40% and flexural strength by 25% compared to untreated composites. Moreover, hybridization of bamboo and oil palm fibers enhances impact energy absorption by approximately 30%. Overall, mechanical performance strongly depends on fiber orientation, volume fraction, and interfacial bonding. This review provides a comprehensive synthesis for developing sustainable composites for future structural and automotive applications.

Review Studi Konfigurasi Rangkaian Piezoelektrik (Seri vs Paralel) dalam Pemanenan Energi Hujan

Reyhan Martin Firnanda — 2026-01-09

This study aims to examine the effect of series and parallel piezoelectric circuit configurations on the system's ability to deliver greater current and better power stability. The objective of the study is to obtain greater electrical power from series and parallel circuits. This research method is carried out by comparing series and parallel circuits on a number of piezoelectrics that will produce voltage and electric current. Data processing will obtain electrical power and the efficiency of the mechanical energy conversion system into electricity, in this case the piezoelectric. The results found that the type of piezoelectric circuit affects electrical power and efficiency. This shows that the use of piezoelectrics as an energy harvesting device can be an alternative solution for producing small-scale, environmentally friendly electrical energy.

Review pada Pengaruh Sudut Kemiringan Atap terhadap Keluaran Energi Piezoelektrik pada Eksperimen Konversi Energi dari Tetesan Air Hujan menjadi Energi Listrik

Pandu Kusuma Pangestu — 2026-01-09

This review was conducted to examine the effect of variations in roof slope angles on the amount of piezoelectric energy generated from the impact of artificial rainwater. The study utilized a miniature roof model with four different slope angles: 15°, 30°, and 45°. Piezoelectric sensors were placed on the underside of the roof surface, which was made of polycarbonate material. Rain simulation was performed using a demonstration device with a constant water discharge rate and controlled droplet size. The voltage and electric current produced at each slope variation were measured using a multimeter. Each experiment was repeated three times to ensure the validity and consistency of the results. The collected data were analyzed to determine the relationship between the roof slope angle and the electrical output by presenting voltage and current graphs against the slope angle and calculating the energy conversion efficiency. The results showed that variations in the roof slope angle affected the generated piezoelectric energy, and an optimum angle was identified that produced the highest voltage and current.

Review: Pemanfaatan Vakum pada Solar Still dalam Proses Laju Penguapan Air Laut untuk Pengaplikasian Desalinasi Kolam Garam

Irfan Maulana Yusuf — 2026-01-12

Vacuum is a condition of air pressure lower than atmospheric pressure and has a significant influence on the process of changing the liquid phase to vapor. Vacuum pressure has a direct influence on increasing the rate of seawater evaporation by lowering the boiling point so that the evaporation process can occur at a low temperature. This study aims to analyze the effect of vacuum pressure on the rate of seawater evaporation for application in a salt pond desalination system. The method used is a literature review from various journals discussing the application of vacuum in the seawater desalination process. The results of the study indicate that reducing pressure significantly accelerates the rate of evaporation and reduces the need for heat energy. The application of vacuum pressure is considered effective in improving performance and efficiency compared to atmospheric pressure systems. This study can provide the development of an energy-efficient desalination system that can be potentially applied in coastal areas.

Pengaruh Partisi Antar Layer Butiran Terhadap Gas CO₂ Pada Batuan Slag Nikel

Amanda Setiawan — 2026-01-09

The absorption of CO₂ gas by solid materials is an important approach in the development of Carbon Capture and Storage (CCS) technology. Nickel slag, as a solid waste product of nickel smelting, has the potential to be used as a carbon absorbent material as well as a construction material. This study analyzes the effect of inter-particle layer partitions in nickel slag on CO₂ absorption and its implications for slag utilization. The method used is a literature review of journal articles and proceedings discussing the physicochemical properties of nickel slag, types of partitions, diffusion pathways, and carbonation performance. The results of the study show that the presence of solid-solid, solid-liquid, pore/crack, and chemical partitions expands the specific surface area, provides active reaction sites, and forms effective diffusion pathways, thereby increasing the capacity and rate of CO₂ absorption. Engineering the morphology of partitions through mechanochemical activation or chemical treatment is an important strategy for optimizing the function of nickel slag in supporting the application of CCS and the circular economy of industry.

Pengaruh Kapasitas Panel Surya dan Intensitas Cahaya Matahari terhadap Kinerja Generator Hidrogen Kering dalam Produksi Gas Hidrogen

Rezha Apriansyah — 2026-01-09

Hydrogen gas can be obtained from a hydrogen generator generated by solar panels. This study aims to obtain the performance of an integrated solar panel system with a dry hydrogen generator (GHK) in producing hydrogen gas. GHK has a design with an arrangement of HSS 316L type steel plates coated with rubber gaskets. The research methodology used is experimental, starting with the design of the GHK electrolysis system using two solar panels with a capacity of 50 Wp and 100 Wp as electrical energy suppliers. The test was carried out in an open area using sunlight. The input data measured included sunlight intensity, air humidity, air temperature, wind speed, and solar panel surface temperature. The output data measured included electrical voltage, electrical current, hydrogen gas discharge, oxygen gas discharge, electrolysis process temperature, and weather conditions. The results showed that the system with a 100 Wp solar panel produced a larger volume of hydrogen and had a higher efficiency of energy conversion than the 50 Wp panel.

Tinjauan Pustaka: Kinerja Kondensor terhadap Produksi Air Tawar pada Proses Desalinasi Air Laut

Ahmad Faiz Rahmatullah — 2026-01-09

The utilization of waste heat from air conditioning (AC) systems has the potential to serve as an alternative energy source for seawater desalination processes. However, the thermal efficiency of desalination systems is strongly influenced by the condensation stage, particularly by the shape and design of the condenser used. This review aims to examine and compare various condenser configurations such as shell and tube, coiled tube, plate, and finned condensers in the context of improving condensation efficiency and freshwater production. The study is conducted through a literature analysis that reviews key parameters such as heat transfer rate, coolant flow rate, and temperature differences between fluids. The review results show that shell and tube condensers provide the highest heat transfer effectiveness, while plate condensers offer better energy efficiency and ease of maintenance. In conclusion, selecting the appropriate condenser design can significantly enhance the efficiency of seawater desalination systems utilizing AC waste heat.

Review Laju Penguapan Air Laut pada Kolam Garam Tertutup

Ahmad Ahdani — 2026-01-09

Evaporation is the process of changing liquid into vapor due to differences in vapor pressure or increased heat energy. This process is important because it forms the basis for the transfer of energy and mass from the water surface to the atmosphere and plays a role in various applications such as desalination, salt production, agriculture, liquid waste treatment, natural cooling systems, and climate studies. This study aims to determine the parameters that influence the evaporation process of seawater in a closed salt pond system based on a literature review. The methodology used is a literature study of various studies discussing the factors that influence the rate of seawater evaporation. The parameters reviewed include water and air temperature, humidity, air velocity, pressure, and radiation intensity. The review results show that temperature and radiation intensity increase the evaporation rate, while humidity and high pressure decrease it. This study provides a basis for the development of efficient and sustainable closed salt ponds.

Pemanfaatan Panas Buang Pendingin Udara untuk Proses Penguapan Air pada Sistem Desalinasi Berbasis Vortex Generator

Genta Prastanadira — 2026-01-09

The clean water crisis caused by climate change and population growth has driven the development of efficient and sustainable desalination technologies. One alternative is to utilize waste heat from air conditioning systems as a thermal energy source for water evaporation processes. Hot air from air conditioning system condensers can be reused in the desalination process, especially when combined with vortex generators to increase heat transfer through turbulent flow. This study aims to review various studies on the effect of vortex generators on increasing the evaporation process in air conditioning waste heat-based desalination systems. The method used is a literature study of scientific publications discussing flow characteristics, temperature distribution, thermal efficiency, and water evaporation rate. The results of the review show that the application of vortex generators can increase the evaporation rate compared to conventional systems. This study provides the basis for the development of energy-efficient desalination systems with broad potential for clean water supply.

Tinjauan Pustaka: Evaporator Oil Essensial

Hanad Arizal — 2026-01-09

Evaporators with vacuum and heating systems are increasingly being used in the evaporation process of essential oils for aromatherapy due to their ability to increase efficiency without damaging the quality of volatile compounds. Their working principle is to lower the partial pressure so that the oil's boiling point can be reached at a lower temperature. Under these conditions, the active compounds in essential oils can be optimally evaporated without degradation due to excessive heat. This technology is crucial given the sensitivity of essential oils to high temperatures, as the chemical components in essential oils are highly stable. This study reviews various studies and scientific literature discussing the operating principles, system design, heat transfer characteristics, and temperature control techniques of modern evaporators. A descriptive-analytical approach was used to identify technological trends and the advantages of applying vacuum and heating systems to the aromatherapy industry. The review results indicate that this system combination increases thermal efficiency, accelerates evaporation rates, and maintains the aroma profile and chemical quality of the oil. Furthermore, the use of an automatic temperature control system improves process precision, reduces the loss of active compounds, and supports better energy efficiency compared to conventional heating methods. This technology holds great potential for the development of modern, stable, efficient, and environmentally friendly aromatherapy diffusers.

Perancangan Pemanenan Energi dari Rintik Hujan: Konsep Konverter Energi Piezoelektrik pada Atap

Muhammad Fahmi Nurhidayat — 2026-01-09

This research discusses the design of a piezoelectric raindrop energy harvesting system integrated into a building's roof surface. The primary objective of the research is to convert the kinetic energy of raindrops into electrical energy by utilizing the piezoelectric effect, while simultaneously designing efficient material and structural configurations that are resistant to dynamic loads. The methodology used refers to the VDI 2221 systematic engineering approach, encompassing requirements identification, concept design, material selection, numerical simulation, and prototype fabrication and testing. The piezoelectric materials used are PVDF and PZT, installed under a polycarbonate roof layer with a rectifier system and energy storage capacitors. Test results show that the system is capable of generating voltage and electrical power proportional to rainfall intensity, with maximum voltage distribution occurring in the central area of the piezoelectric plate. This research demonstrates the potential of utilizing raindrop energy as a renewable energy source and supports innovation in environmentally friendly smart roof designs.

Review: Peningkatan Produktifitas Solar Still Menggunakan Kondensor

Muhammad Irfan — 2026-01-09

The condenser is a key component in solar desalination systems that converts water vapor into fresh water through the condensation process. The efficiency of the condenser greatly affects the amount of fresh water produced. This study aims to review the development of research on the application of salt pond condensers in seawater desalination processes. The method used is a literature review of various scientific journals that discuss internal, external, spiral and conical condenser designs and their integration with solar still systems. The results of the study show that external condensers can increase productivity, while conical condensers increase efficiency. In addition, salt ponds have the potential to become a natural condensation medium that can store heat and improve system performance. This concept can be the basis for the development of efficient, economical, and environmentally friendly desalination technology to meet the need for clean water in coastal areas of Indonesia.

Review Optimasi Ukuran dan Ketebalan Pizoelektrik untuk Pemanenan Energi Hujan pada Atap Model Bangunan sebagai Sumber Energi Listrik

Kurnia Sandi Oktaris — 2026-01-09

This This study aims to examine the optimization of the size and thickness of piezoelectric as the main element in harvesting rain energy from raindrops. The method used is an experiment by varying the size of the piezoelectric (1x1 cm, 3x3 cm, 5x5 cm) and thickness (0.2-0.5 cm) which is installed on the roof of the building model. The research variables measured are voltage and electric current using a multitester three times for data validity. The data is processed to determine the output electrical power and efficiency of the piezoelectric energy conversion system. The results of the study and experiments show that the size and thickness of the piezoelectric affect the output electrical power and efficiency. The results of this study found that the optimal dimensions of the piezoelectric determine the maximum output electrical power and efficiency.

Rancang Bangun Robot Pelontar dan Penghadang Bola Sebagai Mesin Latih Permainan Bola Basket Berbasis Kendali Wireless

Akhmad Rizal Dzikrillah — 2026-01-09

Basketball players need to train their ability to pass and catch the ball from teammates amid the defense of opposing players. With the use of robotic technology, which is now commonly applied in sports training and considered more stable and controllable than humans, athletes can further improve their performance. This study aims to design and develop a ball launching machine that can be used for passing the ball and has an additional capability to block incoming shots. The system uses a net as a blocker that can be raised and lowered to intercept the launched ball. High-torque and high-speed motors on the launching wheels allow the ball to be thrown up to a distance of 4.5 meters. By using a combination of four omniwheels, the machine is capable of moving with three degrees of freedom: forward–backward, turning right–left, and sliding right–left.

Analisis Pengaruh Intensitas dan Ukuran Tetesan Hujan terhadap Kinerja Piezoelektrik pada Pemanfaatan Curah Hujan menjadi Energi Listrik

M. Ravi Cahya Firdaus — 2026-01-24

The increasing demand for energy encourages the development of renewable energy sources, but the utilization of rain energy in Indonesia is still limited. This literature study examines the effect of rainfall intensity and water droplet size on the electrical output of polycarbonate piezoelectrics. The intensity variation is set at less than 5 mm/hour (light rain), 5-20 mm/hour (moderate rain) and 20-50 mm/hour (heavy rain), with droplet sizes of 2.5 mm, 5 mm, and 7.5 mm. The experimental method in this study was carried out by comparing the differences in rainfall intensity and the size of raindrops that fell on the roof that had been installed with a piezoelectric. The raw data measured were voltage and electric current. The results of data processing are in the form of piezoelectric performance, namely electrical power and efficiency. A review of the variations in rainfall intensity and raindrop size shows a relationship between the kinetic energy of the droplets and the piezoelectric output voltage.

Desain Rancang Bangun Ketel Uap Alat Destilasi Minyak Atsiri

Laode Putu Mahardhika — 2026-01-24

Indonesia has great potential in the development of essential oils due to its abundant natural resources. However, most essential oil distillation processes in Indonesia still rely on conventional steam boilers fueled by wood or biomass, which have low thermal efficiency and produce high emissions. This research focuses on the design development and fabrication of an induction-based steam boiler as an environmentally friendly alternative for essential oil distillation. The study involves conceptual design, material selection, and fabrication processes based on the ASME Boiler and Pressure Vessel Code (BPVC) Section IV and B31.4 standards. This research focuses on the design and manufacturing stages of the tool, while thermal performance analysis will be carried out in further research., and the functional verification stage is planned to be carried out after the boiler fabrication is completed. Through this approach, the developed prototype is expected to be efficient, safe, and practical for essential oil distillation. The outcome of this design is also expected to serve as a reference for future development of induction heating technology in small- and medium-scale essential oil industries in Indonesia.

Analisis Kandungan Free Fatty Acid (FFA) dan Viskositas Limbah Minyak Jelantah pada UMKM di Kota Malang sebagai Upaya Pengendalian Mutu Bahan Baku Biodiesel

Ahmad Setyo Putra — 2026-01-25

This research aims to analyze the Free Fatty Acid (FFA) content and viscosity of waste cooking oil (WCO) generated by small and medium enterprises (SMEs) in Malang City as part of quality control for biodiesel feedstock. Sixty oil samples were tested using the alkalimetric titration method for FFA and a Brookfield viscometer for viscosity measurement. The results showed an average FFA value of 1.38% (ranging from 0.07% to 7.46%) and an average viscosity of 31.28 cP (ranging from 22.75 to 42.13 cP). Most samples met the safe limit (<2%) for direct base-catalyzed transesterification, while approximately 25% required a pre-esterification process. The Pearson correlation indicated a weak but significant negative relationship (r = -0.2898; p < 0.05), suggesting that FFA and viscosity must be controlled independently. These findings highlight the importance of implementing a simple quality control system at the SME level to support sustainable biodiesel production.

Review Pengaruh Penambahan Nanopartikel Pada Pelumas Terhadap Oli Mesin

Dimas Maha Saputra — 2026-01-25

Improving engine efficiency and stability is a key component of engine technology, especially in the crucial aspect of lubrication to reduce friction and component wear. Conventional lubricants often have difficulty in maintaining thermal stability and tribological properties under high operating conditions. Therefore, the use of nanoparticles in lubricants is being developed as an innovation to improve engine performance. This review aims to analyze the effect of various types and concentrations of nanoparticles on the physical characteristics and performance of lubricants, such as viscosity, thermal conductivity, and the ability to reduce friction. The method used is an experiment in which metal oxide nanoparticles are mixed into the base oil using an ultrasonic method, followed by using a viscometer and tribometer. The findings of this review show that the addition of nanoparticles can significantly improve thermal stability and reduce the coefficient of variation of friction compared to oil without nanoparticle additives. This indicates that nanoparticle-based lubricants have the potential to improve engine and component efficiency.

Tinjauan Pustaka: Pengaruh Temperatur Udara keluar Terhadap Proses Penguapan

Salman Alfariz — 2026-01-25

The evaporation process is strongly influenced by air temperature, particularly the outlet air temperature, which determines the rate of moisture removal and energy efficiency. This literature review analyzes studies on the impact of outlet air temperature on evaporation performance across various applications, including drying systems, cooling towers, and desalination units. Findings from previous research indicate that higher outlet air temperatures generally increase the evaporation rate due to enhanced vapor pressure differences, yet may reduce overall energy efficiency if not properly controlled. Conversely, optimized airflow and moderate temperature gradients promote stable evaporation with lower energy losses. The reviewed literature highlights the importance of balancing thermal and aerodynamic parameters to achieve effective and sustainable evaporation processes. This review aims to provide a theoretical foundation for improving evaporative system design through precise control of outlet air temperature.

Analisis Pengaruh Intensitas Cahaya Matahari dan Jenis Generator terhadap Kinerja Sistem Panel Surya-Generator Hidrogen 50 Wp

Saddam Firly Mustarisiam — 2026-01-25

Hydrogen gas can be produced from wet hydrogen generators (GHB) and dry hydrogen generators (GHK). Both hydrogen generators are powered by a 50 Wp solar panel (PV). The aim of this research is to study the performance comparison of GHB and GHK in producing hydrogen gas flow rate and system efficiency to determine the more optimal system. The research began with a literature study and designing both generators, which underwent trials to obtain a research equipment system that adheres to the theory and concepts of GHB and GHK. Experimental methods were carried out by direct measurements of input and output variables from the solar panel as well as output variables from the GHB and GHK electrolysis systems. The research results show that the integrated PV-GHB system produces a larger hydrogen gas flow rate and higher system performance efficiency compared to PV-GHK.

Review Pengaruh Jenis Material Atap terhadap Efisiensi Pemanenan Energi dengan Piezoelektrik sebagai Konverter Energi Mekanik menjadi Energi Listrik

Muhammad Fahmi Nurhidayat — 2026-01-25

Raindrops hitting the roof material and the falling rainwater exerting pressure on the roof can be utilized as a power source with piezoelectrics as a converter of mechanical energy into electrical energy. The purpose of this research is to find the right roof material to produce maximum electrical power and efficiency in harvesting the energy of falling rainwater. This research method is carried out by comparing three types of roof materials placed on top of the piezoelectric. The falling rainwater will press the roof material and piezoelectric, thus producing electricity in the form of voltage and current measured with a multitester. The measurement data is processed into electrical power and efficiency. The results of the study found that the type of roof material affects the performance of the piezoelectric as an energy converter.

Tinjauan Pustaka: Perancangan Solar Tracker Otomatis Dengan Integrasi Sistem Penyiraman Tanaman Berbasis Energi Surya

Sigit Maulana Malik — 2026-01-25

This study discusses the design of an automatic solar tracker integrated with a solar-powered plant irrigation system. The main objective is to optimize solar energy utilization while reviewing previous research on solar tracking and automatic irrigation technologies to identify the most efficient and sustainable approach. The literature review covers sensor-based tracking using LDRs, HSV image recognition methods, and microcontroller control such as Arduino. Based on the review and implementation, the system was designed to automatically adjust the solar panel’s position according to the sun’s movement, while irrigation is controlled by soil moisture sensors. Experimental results show that the integrated system improves solar energy absorption and water-use efficiency compared to conventional methods. Therefore, this integration provides an effective, energy-efficient, and eco-friendly solution suitable for small-scale agricultural applications.

Tinjauan Pustaka Pengembangan Desain Mata Punch pada Proses Punching Multi Plate Pipe

Naufal Eka Prasetya — 2026-01-25

The multi-plate pipe punching process is a crucial manufacturing technology in modern industry, especially in the manufacture of high-precision perforated pipe components. This study aims to examine the development of an optimal punch eye design to improve efficiency and product quality in the multi-plate pipe punching process. The method applied in this research is descriptive literature analysis by reviewing various relevant reference sources on punch design, materials, and punching process parameters. The results show that the optimal punch design must consider geometric factors, material selection, cooling systems, and wear analysis. Material innovations such as tool steel with high alloy steel and special coatings have been proven to increase service life. Finite Element Analysis (FEA) simulation is an effective tool for design optimization prior to actual implementation. This study provides punch eye design recommendations that can be practically applied in the manufacturing industry to increase productivity and reduce production costs.

Tinjauan Pustaka: Perancangan Sistem Pendingin Termoelektrik Bertenaga Surya dan Ramah Lingkungan

Enrico Chiesa Virgianto — 2026-01-24

The growing demand for environmentally friendly cooling technologies has encouraged the use of thermoelectric systems based on the Peltier effect as an alternative to conventional vapor-compression systems that rely on harmful refrigerants. This research focuses on designing a portable cooling device powered by solar-generated electricity to create an efficient and sustainable refrigeration solution. The system integrates solar panels, a battery, a TEC module, a heatsink, a coldsink, and cooling fans to ensure effective heat dissipation. Performance evaluation was conducted through three experimental tests by calculating the Coefficient of Performance (COP) and analyzing convective heat transfer using Reynolds number, friction factor, Nusselt number, and heat flux. The results show that solar intensity plays a key role in determining the electrical power supplied to the thermoelectric module, thus influencing its cooling performance. COP values varied across the trials, with the highest average value of 0.167944 recorded in the third test. Although its efficiency remains lower than that of vapor-compression systems, the prototype demonstrates that a solar-powered thermoelectric cooler can serve as an energy-efficient, refrigerant-free, and environmentally friendly portable cooling solution.

Analisis Efisensi Penggunaan Panel Surya untuk Penerangan Jalan dan CCTV Keamanan Lingkungan

Ahmad Muflih Adzhar — 2026-01-25

Reliance on PLN electricity for street lighting (PJU) and security CCTV requires high operational costs and is vulnerable to outages. Solar panels (PV) are a sustainable, efficient, and environmentally friendly renewable energy solution to improve security while reducing carbon emissions. This study aims to analyze the technical efficiency and economic feasibility of an integrated solar panel system to power street lighting and security CCTV in a neighborhood. The methods used were literature review and system calculation analysis (mathematical simulation). The calculations involved determining the daily power requirements of the street lighting and CCTV, the required solar panel capacity (Watt-peak), and battery capacity. Panel power efficiency was investigated based on irradiation intensity and tilt angle. The analysis results indicate that the PV system is highly effective and has potential. System efficiency can be significantly increased (15-20%) by implementing automatic/IoT controls. Although the initial installation costs tend to be higher, in the long term, this system is significantly more economical than conventional systems, providing sustainability and energy independence benefits

Review Prototipe Pendingin Mesin Kecil Berbasis Teknologi Peltier

Agil Hidayatulloh — 2026-01-25

Peltier technology uses the thermoelectric effect to transfer heat from one part of the module to another, allowing it to function as a cooler or heater without moving mechanical components. Despite its advantages in terms of reliability and environmental compatibility, Peltier modules still lack energy efficiency compared to traditional cooling systems. Previous research has focused on improving performance through innovations in semiconductor materials, thermal system design, and optimization techniques. In applications to small machines, key challenges include managing the heat on the hot side, incorporating compact designs, and maintaining stable operating temperatures. However, research findings indicate that with appropriate design and material advancements, Peltier modules have the potential to provide efficient and sustainable cooling solutions for low-power machines and portable biomedical devices.

Tinjuan Pustaka: Analisis Ergonomi Posisi Berkendara pada Rangka Chopper Berdasarkan Antropometri Pengendara

Gaza Juliyanto — 2026-01-25

Ergonomic analysis of riding posture on a chopper frame based on rider anthropometry is crucial to ensure comfort and safety during riding. This study examines the suitability of the chopper frame's dimensions with the rider's body size using representative anthropometric data. Through measurement and comparison methods, the research identifies geometric mismatches in seating position and control placement that can cause discomfort, muscle fatigue, and long-term injury risks. The analysis results indicate that seat dimensions and frame height need adjustment to match the rider’s anthropometric percentiles to optimize an ergonomic riding posture. This research offers ergonomic design recommendations for chopper frames to enhance comfort and reduce injury risks, using anthropometry as a design reference for two-wheeled vehicles. The findings are expected to guide the development of safer and more comfortable chopper motorcycles, supporting national ergonomic standards

Review Performa Mesin pada Sepeda Motor Dengan Penyesuain Waktu Pengapian terhadap Penggunaan Bahan Bakar Pertamax Green 95

Andy Rianata — 2026-01-25

The development of the number of motorized vehicles is very high at this time. The phenomenon in 2025, almost all motorcyclists have problems with fuel that does not match the RON. This study aims to analyze engine performance on motorcycles by adjusting the ignition timing to the use of Pertamax Green fuel. This study is to analyze the use of fuel with octane 95 and ignition timing on engine performance on motorcycles. This research method uses a full open throttle valve in testing engine performance with a dyno engine, the fuel used is Pertamax Green with RON 95, and ignition that varies from 2.5° before top dead center from standard time, 5° before top dead center from standard time, 7.5° before top dead center from standard time, 10° before top dead center from standard time. The results obtained when using Pertamax Green fuel and changing the ignition, can change and increase engine performance and increase fuel efficiency, for perfect ignition is at 2.5° before the top dead center of the standard time. The torque obtained when using Octane 95: 15.30 N.m, an increase of 1.83 N.m from the standard timing. The power generated from Octane 95: 8.8 HP, an increase of 0.9 HP from the standard timing. And the lowest consumption produced by using Octane95:0.1340ml/s

Perancangan Prototipe Sistem Informasi Sejarah dan Wisata Kota Depok Berbasis Web

Gusnul Mahesa — 2025-12-27

The city of Depok has a wealth of historical value and tourism potential that has not been properly documented in digital media. The lack of access to related media causes difficulties for the community and tourists. This study aims to design a web-based information system prototype that presents comprehensive and engaging historical and tourism information about the city of Depok. The method used is a descriptive approach, beginning with the stages of needs analysis, system design, and user interface design. The results of this study are interactive visual prototype designs that include historical information and a list of tourist locations. This prototype has been successfully developed and tested, showing positive results in supporting the preservation of history and promotion of tourism in Depok City. User testing using the System Usability Scale (SUS) method resulted in an average score of 89.84, which falls into the ‘Excellent’ category. With this achievement, this digital information system can serve as a starting point for further extensive and sustainable development.

Penerapan E-Commerce untuk Pemasaran Pertanian: Evaluasi Usability, Pengalaman Pengguna, dan Dampak Positif "Gawosa Shop"

Christy Mahendra — 2025-12-27

Farmers in Gumiwang Village face significant challenges in marketing their harvests. To address this issue, the "Gawosa Shop" e-commerce platform was developed. This study evaluates the platform's usability, user experience (UX), and its impact on sales. Interface testing using the System Usability Scale (SUS) yielded an average score of 83.92, which is categorized as "Excellent." User Experience Questionnaire (UEQ) testing, which assessed six components (Attractiveness, Perspicuity, Efficiency, Dependability, Stimulation, and Novelty), showed results ranging from Good to Excellent. During the implementation period from October 1 to November 5, 2025, Gawosa Shop successfully increased revenue by 21.2% and the total number of orders by 116.7%. These findings indicate that Gawosa Shop is effective, well-received by its users, and provides a positive economic impact for the farmers in Gumiwang Village.

Kalibrasi dan Validasi Sensor pH E-201C-Blue dan TDS Meter V1 pada Sistem Hidroponik Otomatis Berbasis IoT di Aswana Hidroponik

Mikha El Charisto Rahardjo — 2025-12-27

This study aims to calibrate and validate the pH E-201C-Blue sensor and TDS Meter V1 implemented in an IoT-based automatic hydroponic system at Aswana Hydroponic, Purwokerto. The calibration process was carried out using a multi-point method with standard buffer solutions (pH 4, 7, and 10) and TDS solutions ranging from 500 to 1500 ppm to achieve optimal accuracy. An ESP32 microcontroller was used as the main controller and data transmitter to a cloud-based monitoring dashboard. The results showed that after calibration, the sensor achieved high accuracy with a correlation coefficient (R²) above 0.98 and an average error below 5%. These findings indicate that low-cost commercial sensors can provide reliable performance in automated hydroponic system, supporting time efficiency and improving crop productivity at Aswana Hydroponic, Purwokerto.

Otomatisasi Pengatur pH dan Nutrisi pada Tanaman Hidroponik Berbasis Internet of Things di Aswana Hidroponik

Vincensius Agung Wibowo Joyopranoto — 2025-12-27

This study discusses the design of an automated pH and nutrient control system for hydroponic plants based on the Internet of Things (IoT). The objective of this study to develop a system capable of reading solution conditions and sending data in real time through an IoT platform to facilitate monitoring without manual intervention. The system is designed using an ESP32 microcontroller as the control center, a pH sensor, a TDS meter sensor, and a peristaltic pump for the solution injection process. The sensor reading data is sent to the IoT server using the Blynk platform. The test results show that system is capable of sending valid and consistent pH and TDS data to the Blynk dashboard with an accuracy level ±98%, making it easier for users to monitor the condition of the nutrient solution remotely. This research is the first step towards an efficient and integrated automatic hydroponic control system.

Rancang Bangun Sistem Penebar Pakan Ikan berbasis Internet of Things (IoT)

Ridwan Bagus Andreyanto — 2026-01-24

In everyday life, both in urban and rural areas, many people enjoy keeping fish as pets because they are easy to care for and maintain. This has led to a growing interest in fishkeeping among the general public. Fish kept in aquariums require regular feeding schedules to maintain their health, making an organized and consistent feeding system essential. The ESP32 is an integrated chip developed for modern networking applications. It provides a complete and integrated Wi-Fi networking solution that can function as an application processor or serve as a Wi-Fi network controller for other processors. One of its practical applications is in the development of an automatic fish feeder based on the Internet of Things (IoT). By utilizing the ESP32 along with supporting software such as Arduino IDE, Google Firebase, and MIT App Inventor, the automatic fish feeder can operate automatically according to predefined feeding schedules. Furthermore, the system can send notifications through a website when the fish have been fed or when the feed container is empty.

Perancangan Arsitektur Kecerdasan Buatan "Bubu": Agen Pendamping PsikososialMahasiswa Berbasis Multimodal dan Kearifan Lokal

Tiananmen Setyo Nugroho — 2026-01-25

The mental well-being of Indonesian university students is currently facing complex pressures, ranging from heavy academic demands to economic instability and the psychological impacts of social media interactions. Unfortunately, the availability of professional psychologists is not commensurate with the population in need, creating a significant service gap. This study aims to design "BUBU," a web-based artificial intelligence agent positioned as a first-line defense for psychosocial support. The system is developed using a Human-Centered Design approach, integrating multimodal inputs (text, voice, and visuals) to detect user emotions in real-time. BUBU is trained using a Large Language Model (LLM) with prompt engineering techniques that adopt student vernacular (slang/code-mixing) and Active Listening protocols. Test results show that the system is capable of providing contextual emotional validation, adjusting response tones based on facial expressions, and possesses a fail-safe mechanism to detect suicide risks and provide appropriate referrals. This prototype offers potential as an effective mental health triage tool in campus environments.

Pengembangan Sistem Email Campaign Generator Menggunakan AI untuk Promosi Produk Baru

Angelica Indah Desviyani — 2026-01-25

In the contemporary digital landscape, the necessity for an AI-driven Email Campaign Generator is progressively vital for firms to enhance the promotion of new products. This sistem extracts the most recent product information from the database, employs a language model to create appropriate advertising descriptions, and subsequently automates the distribution of emails to the target demographic. The connection encompasses Airtable as the primary data repository, OpenAI for the creation of promotional content, and the Gmail API to facilitate the automation of the email distribution process. This technique enables marketing operations to be executed more efficiently and reliably, while minimizing time-consuming manual processes. The deployment results demonstrate that the sistem can generate compelling promotional content and automate the entire promotional procedure. This improvement is anticipated to assist organizations in broadening their marketing reach, expediting product information dissemination, and enhancing digital marketing methods that can swiftly respond to evolving demands.