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All Journal JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Communications in Science and Technology Jurnal Konversi Energi dan Manufaktur Automotive Experiences Jurnal Pendidikan Teknik dan Vokasional
Sukarno, Ragil
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Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Experimental Investigation of Using Thermoelectric Coolers under Different Cooling Methods as An Alternative Air Conditioning System for Car Cabin Sukarno, Ragil; Premono, Agung; Gunawan, Yohanes; Wiyono, Apri; Lubi, Ahmad
Automotive Experiences Vol 7 No 2 (2024)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.11485

Abstract

The cabin car temperature will increase when parked in direct sunlight, so the energy required to cool cabin space by the air conditioner will be higher. This study aims to investigate using a thermoelectric cooling system as an alternative to a chiller system to supply cold air to the car cabin under different cooling methods for parked cars. Experimental testing of thermoelectric cooling systems was conducted to produce cold air that can be applied to car cabins as an alternative to conventional air conditioners. The thermoelectric cooling system was varied with single and double TEC modules. The double TEC modules are arranged in a series of electrical and parallel thermal arrangements. A cooling water block using a mixture of water and ethylene glycol with variations of 0.4 lpm, 0.5 lpm, and 0.6 lpm was added to the hot side of the thermoelectric module. The result shows that the thermoelectric cooling system can work properly during the 2-hour test, which constantly supplies air to the cabin space between 20-25 °C, depending on the configuration of the cooling system. The highest COP of 0.84 was obtained when using the double TEC with heatsink and added 0.5 lpm water cooling system, while the lowest COP of 0.53 was obtained when using the single TEC module without a cooling water block.
DEVELOPMENT OF EDUTAINMENT-BASED MECHANICAL ENGINEERING DRAWING LEARNING MEDIA USING THE CANVA APPLICATION Pamungkas, Tabah Putra; Prihantoro, Constantinus Rudy; Sukarno, Ragil
Jurnal Dinamika Vokasional Teknik Mesin Vol. 10 No. 1 (2025)
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v10i1.83478

Abstract

Education and learning are developing in accordance with the development of science and technology. The education quality could be improved by changing a conventional learning media into learning media that can increase student motivation so that students can more easily understand the learning material. This research aims to develop and design edutainment-based learning media using the Canva application in the subject of Mechanical Engineering Drawing. The research was carried out using the Research and Development (R&D) method with a 4D development model, which must go through a validation process from experts as a successful process of the feasibility test of the product developed before it is later used by students. This research offers a novelty by integrating specific edutainment elements in the Canva application for Machine Engineering Drawing learning, which has not been explored much in this context before. This innovation creates a more interactive and engaging learning experience, expected to significantly improve material comprehension and retention compared to conventional methods. The results of the feasibility test of edutainment-based mechanical engineering drawing learning media using the Canva application obtained a percentage of 96% from material expert validators, 88% from media expert validators, and 86% from the results of the learning media feasibility test conducted by students. From the results of the test, it can be concluded that Edutainment-Based Mechanical Engineering Drawing Learning Media Using the Canva Application "Very Feasible" is used in the learning process. 
Experimental investigation of a thermoelectric generator assisted with heat pipe sinks for pickup car exhaust waste heat recovery Sukarno, Ragil; Indasyach Moreno, Zavi; Rio Budi Syaka, Darwin; Gunawan, Yohanes; Gama Yoga, Nugroho; Fariz Adzani, Rivaldo; Putra Mustafit, Alvian; Kurniawati, Desy
Communications in Science and Technology Vol 10 No 1 (2025)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.10.1.2025.1661

Abstract

In internal combustion engine vehicles (ICEV), about 40% of the heat is discharged into the environment as waste heat. This study proposed to develop an energy recovery device to utilize exhaust heat as electrical energy using a thermoelectric generator (TEG) assisted with a heat pipe sink. Six TEG units were installed on the stainless-steel heat block in an exhaust pipe where each TEG unit varied with one-stage TEG and two-stage TEG modules. The results showed that the maximum power generated and TEG efficiency of 1.4 W and 1.14% were obtained under 180oC of exhaust pipe temperature, with a two-stage TEG with a heat pipe sink under forced convection. The use of a heat pipe sink and under-forced convection improves the TEG system's performance by increasing the temperature difference between both sides of the TEG module, which impacts the electric power generated. This research provides some practical guidance for increasing the power and efficiency of TEGs by improving heat transfer performance through heat pipes.
Innovative Pickup Car Cooling System Based on Thermoelectric Coupled With Heat Pipe Sink Sukarno, Ragil; Rafael, Muhammad; Yoga, Nugroho Gama; Syaka, Darwin Rio Budi; Permana, Agus Agung; Gunawan, Yohanes; Kurniawati, Desy
Automotive Experiences Vol 8 No 2 (2025)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.13494

Abstract

Pickup cars are one of the most important means of transportation in the distribution of goods and logistics. However, many customers choose pickup cars without air conditioning because they are less expensive and more energy-efficient, resulting in lower operating costs. Car air conditioning systems generally utilize vapor compression systems, which consume a significant amount of energy. Additionally, some studies on thermoelectric cooling face challenges due to incompatible and difficult-to-install designs within vehicle cabins. To address this issue, this research was conducted on developing an innovative compact air conditioning (AC) system for the cabin of a pickup car. This system utilizes thermoelectric cooling (TEC) combined with a heat pipe sink. This cooling system features a practical and installation-friendly design compared to previous work, which can be integrated into existing pickup models without significant modifications. It is designed as a cooling box that generates and circulates cold air within the cabin. In this testing, the cooling box comprises six-unit thermoelectric cooling, where each unit varies using one-stage TEC modules and two-stage TEC modules. A 175-watt and 200-watt heat was applied and varied in the cabin to simulate the cooling load, and the air outlet duct's velocity also varied at 2 m/s and 3 m/s. The results showed that the thermoelectric cooling systems can significantly reduce cabin temperature increases, lowering the rise by 11.0 °C for a single-stage TEC system and by 10.8 °C for a double-stage TEC system compared to the cabin without a cooling system. The highest COP value of 1.4 was obtained in the single-stage TEC cooling system at a velocity of 3 m/s. The results show the potential of an innovative thermoelectric cooling (TEC) system when combined with heat pipes, offering an alternative cooling solution for the cabin of a pickup car. This proposed cooling system can be adapted for vehicles that require compact and energy-efficient cooling solutions.
SISTEM RESIRKULASI AIR OTOMATIS UNTUK PENGHEMATAN AIR BERSIH DAN ENERGI PADA BUDIDAYA IKAN NILA: The Automatic Water Recirculation System for Clean Water and Energy Saving in Tilapia Farming Sukarno, Ragil; Ramadhan , Muhammad Fajar; Andriansyah, Farezi; Adigutama, Yudha; Syamsuir; Sampurno , Hari
Jurnal Konversi Energi dan Manufaktur Vol. 9 No. 1 (2024)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.9.1.5

Abstract

The acidity and turbidity of water are essential factors in tilapia farming, so it is necessary to control the acidity (pH) and turbidity (NTU) of water. This research aims to develop an automatic water recirculation system to save the use of clean water and energy consumption in tilapia fish farming using a microcontroller based on pH and turbidity (NTU) values. The research method used is experimental, starting with design and manfacture an Experimental apparatus in the form of a fish pond from a box-shaped tarpaulin, a filter system, a water circulation system consisting of pipes and a pump that has a suction power of 25 lpm, an Arduino-based microcontroller water quality controller. Tests were carried out by comparing water's pH and NTU values before and after filtering. The results showed that using a water recirculation system in a fish pond equipped with a filter system and an Arduino-based microcontroller system can significantly maintain the pH value and reduce the turbidity level (NTU). Using a recirculation system provides energy savings for pump consumption of 51.4% at a water flow rate of 15 lpm and 32.3% at a water flow rate of 25 lpm compared to conventional systems. Overall, the recirculation system provides the benefits of energy savings in pump operation, savings in water usage, and controlled water quality.
PENGEMBANGAN PERANGKAT PEMBELAJARAN PADA EDUKASI BAHAYA KEBAKARAN DAN UPAYA PENYELAMATAN DIRI DENGAN METODE PROBLEM BASED LEARNING BERBASIS HIGHER ORDER THINKING SKILLS PADA SISWA KELAS V Aditya Hermawan; Avanti, Ratu Amalia; Sukarno, Ragil
Jurnal Pendidikan Teknik dan Vokasional Vol. 4 No. 2 (2021): Jurnal Pendidikan Teknik dan Vokasional
Publisher : LPPM, Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.105 KB) | DOI: 10.21009/JPTV.4.2.105

Abstract

This study aims to develop a web-based learning model on the fuel system material and determine the feasibility of the learning model product based on the assessment of 2 material experts, 2 media experts and 30 students at SMK Negeri 54 Jakarta. This research method is Research and Development (R&D) with the ADDIE development model consisting of five stages, namely Analysis, Design, Development, Implementation, and Evaluation. The results in this study are a web-based learning model that can be accessed via computers and smartphones with the address https://teknikengine.000webhostapp.com. In this study, it was shown that the level of feasibility of the learning model based on the assessment of material experts from all aspects obtained a percentage of 88.33% which was included in the "Very Eligible" category. Media experts in all aspects obtained a percentage of 85.38% which was included in the "Very Eligible" category and the satisfaction results by students in all aspects obtained a percentage of 89.23% which was included in the "Very Satisfied" category. Thus, the web-based learning model on this fuel system material is "Very Appropriate" to be used as a learning model Keywords: Learning Model Development, Feasibility
Co-Authors Adigutama, Yudha ADITYA HERMAWAN Andriansyah, Farezi Apri Wiyono Avanti, Ratu Amalia Darwin Rio Budi Syaka Desy Kurniawati Fariz Adzani, Rivaldo Gama Yoga, Nugroho Indasyach Moreno, Zavi Lubi, Ahmad Pamungkas, Tabah Putra Permana, Agus Agung Premono, Agung Prihantoro, Constantinus Rudy Putra Mustafit, Alvian Rafael, Muhammad Ramadhan , Muhammad Fajar Rio Budi Syaka, Darwin Sampurno , Hari Syamsuir Yoga, Nugroho Gama Yohanes Gunawan, Yohanes