Steam Engineering

PERANCANGAN MESIN PENGERING RIMPANG UNTUK RUMAH PRODUKSI JAMU CELUP TRADISIONAL

Ratna Fajarwati Meditama — 2024-09-27

Rhizomes are one of the main ingredients in the production of traditional herbal medicine, which plays an important role in the food, beverage and medicine industries. The process of drying rhizomes greatly affects the quality and shelf life of the product, so an efficient drying device is needed to ensure optimal quality. This research aims to design a rhizome drying tool for traditional dipping herbal medicine production houses, which can speed up the drying process and maintain the quality of the rhizomes produced. This type of research is development research with the research object being rhizomes used in herbal medicine production. Data was collected through testing the designed tool, using temperature and drying time testing methods. Data analysis was carried out by measuring the quality of the rhizomes post-drying, including moisture and color. The research results showed that the designed dryer was capable of drying rhizomes at a temperature of 40°C within 1 hour, while maintaining the quality of the rhizomes and meeting the standards for herbal medicine production. In conclusion, this tool has the potential to be a practical solution for traditional herbal medicine production houses, speeding up the production process and increasing efficiency.

PERSEPSI MAHASISWA TERHADAP MEDIA PEMBELAJARAN MINI CULTIVATOR PADA MATERI ELEMEN MESIN

Firman Setiawan — 2024-09-27

Starting from the limitations of real learning media in learning, this study aims to explore students' perceptions of the use of Mini Cultivator as a learning medium. The research method used is quantitative using the urgency, seriousness, and growth (USG) matrix. The data collection technique uses a questionnaire. The results of the study showed that students' perceptions on the aspect of media effectiveness received the highest priority with a percentage of 25.07%, followed by motivation at 25.06%, usefulness at 25.04%, and innovation at 24.81%. Students' positive perceptions of Mini Cultivator media are reflected in the results of the USG analysis. The results of the assessment on the "urgency" dimension indicate students' awareness of the importance of using Mini Cultivator in learning. The "usefulness" dimension shows that students see Mini Cultivator media not only as an addition, but as an important element in learning. The "development" aspect shows that Mini Cultivator media is relevant and closely related to the topic or concept being studied.

PENGARUH POWER SUPPLY TERHADAP KINERJA COOLER BOX MINI PADA SISTEM TERMOELEKTRIK PELTIER

Dibyo Setiawan — 2024-09-27

Indonesia has tropical climate characteristics, so it requires a cooling device where the utilization can be used as a room cooler and storage. Cooling machines generally use refrigerant working fluid in the compressor, refrigerant is a gas that is not environmentally friendly. So it is necessary to conduct alternative studies, that can replace refrigerant gas and simplify dimensions, weight, and convenience. This study was conducted to analyze the effect of applying a power supply on the performance of thermoelectric coolers. The experimental method applied 2 types of power supplies for thermoelectric Peltier coolers in cooling the mini cooler box space, then the 1400 ml capacity cooling room was given a varying volume of drinks. Analysis of the effect of using a power supply on the cooling performance of the mini cooler box on the thermoelectric Peltier system obtained the results that the time to reach the ambient temperature takes different times. The greater the load put into the box, the longer it takes to cool the drinking water. The greater the power supply ampere specifications, the better it is in accelerating the cooling rate but the power required is greater such as the application of the type of power supply with the type 20A.

OPTIMALISASI KINERJA TRUK QUESTER CWE 370 MELALUI MODIFIKASI SISTEM VESSEL

Yayi Febdia Pradani — 2024-09-27

The Quester CWE 370 truck is one of the most widely used transport vehicles in the industry, where reliability and operational efficiency are critical to ensuring a smooth supply chain. This research aims to optimize truck performance through vessel system modification, which focuses on improving fuel strength and efficiency. The modification process includes checking the raw material, cutting, welding, and smoothing, which is followed by testing to ensure fuel flow stability and better engine response. The results show that vessel system modifications not only improve fuel efficiency, but also extend engine life and reduce the need for routine maintenance. Thus, these modifications provide long-term benefits for the company in terms of operational cost savings and increased productivity.

PENGEMBANGAN MODUL AJAR BERBASIS ANDROID UNTUK SISWA SMK

Franciscus Mujiono — 2024-09-27

This study aims to describe and analyze the feasibility, practicality and effectiveness of Android-based Indonesian language and literature teaching modules for grade XI vocational high school students. This study uses the Research and Development (R&D) method referring to the ADDIE model steps developed by Dick and Carey which include needs analysis, e-module design, e-module development, implementation, and evaluation. The subjects of the study included 1 media expert, 1 learning design expert and 1 subject matter expert, and 35 grade XI students of SMK Leonardo Klaten. The instruments used to assess the feasibility of this e-module include a feasibility assessment sheet by media experts, a feasibility assessment sheet by learning design experts and subject matter experts and a student response questionnaire on the use of the e-module. The results of the study showed that the Android-based Indonesian language and literature teaching material e-module was declared very valid with an average overall score of 96% for media experts, learning design experts with an average score of 92% and subject matter experts with an average score of 93%. The results of student responses as users obtained an average value of 4.70 with a percentage of results of 94.1% so that the developed e-module is included in the category of "Very practical". In the analysis of student learning outcomes data, the N Gain result was 0.57, so the e-module was interpreted as a moderate category. The interpretation category of N-Gain effectiveness is quite effective

TINJAUAN LITERATUR: PENINGKATAN KETAHANAN API DAN SIFAT MEKANIK PADA KOMPOSIT POLIMER DENGAN PENAMBAHAN BAHAN LIMBAH GEOPOLIMER

Ridwan Afandi — 2024-09-27

Composite polymers are now under development and are widely used in automobile manufacturing for interior panels, door panels, and bodywork. The research and development of polymer composites for the automobile manufacturing must have resilient fire resistance requirements. Currently, polymer composites with fire resistance capabilities have been developed with geopolymer materials, which offer benefits and produce excellent performance. Geopolymers are inorganic polymers that contain aluminosilicates, silica oxides, and alumina oxides. They have thermally resistant mechanical characteristics. Geopolymer materials are commonly derived from waste materials, including those utilized as additions to polymer composite materials, specifically coal fly ash and clay-based waste. The purpose of this literature is to discuss the path and progress of waste-based polymer reinforced composite technology for fire resistance. The methodology employed in this study takes a conceptual approach to articles on the influence of adding different types of geopolymer materials on the fire resistance properties of natural fiber reinforced composites. According to the findings, articles involving the inclusion of geopolymer materials tend to lower resistance to tensile and flexural stresses, whilst the addition of this geopolymer material reduces fire resistant qualities.

PERANCANGAN MESIN PENCACAH SAMPAH ORGANIK DENGAN MENGGUNAKAN TIPE MATA PISAU HAMMER

Alvin Sthiefandy — 2024-09-27

According to the national waste management information system (SIPSN) in 2021 organic waste in Manado city is 47.7%. The purpose of this research is to reduce organic waste in the tondano market and get a hammer blade design on the chopping machine, this research uses an experimental method which includes design, data collection, making initial design concepts, selecting materials, making 2d and 3d designs, manufacturing processes, testing tools, reports. The organic waste chopping machine works mechanically using diesel rotating speed of 2600 rpm, the working principle of the chopping machine is to enter organic waste through the hopper then the waste is chopped with a rotating hammer blade totaling 6 and 2 silent hammer blades. Waste will be filtered into smaller pieces and easily processed further, such as maggot food, compost or organic fertilizer. From the results of the research conducted and based on data processing, it can be concluded that this waste chopping machine has been successfully made and fulfills the first goal of the researcher to reduce the amount of waste in the Tondano market whose volume is 300kg / day. The machine is able to chop organic waste into fine pulp with a waste chopping capacity of 553.84 kg / hour.

ANALISIS PENERAPAN KESELAMATAN DAN KESEHATAN KERJA: STUDI KASUS DI BENGKEL KENDARAAN RINGAN DI SMK KARSA MULYA PALANGKA RAYA

Fazar Maulana — 2024-09-27

This study aims to analyze whether the use and feasibility of facilities and PPE applied in the light vehicle practical workshop in implementing K3 implementation is good and correct and to analyze whether the Standard Operating Procedure for K3 implementation carried out in the workshop of SMK Karsa Mulya Palangka Raya is good and appropriate. The type of research used is qualitative with a case study approach method. Data collection techniques using observation, interview methods, and documentation methods. The data analysis technique used in this research is qualitative data analysis technique. The results of this study indicate that the use of PPE and the feasibility of facilities in the light vehicle practical workshop at SMK Karsa Mulya in implementing K3 show that the facilities and completeness of PPE used are still incomplete. The application of the K3 SOP is still not implemented according to K3 guidelines and the legal basis regulations are still unclear

TRANSFORMASI DIGITAL DALAM MENINGKATKAN KESIAPAN KERJA LULUSAN PROGRAM STUDI PENDIDIKAN TEKNIK MESIN UNIVERSITAS PALANGKA RAYA

Steven Yulando — 2024-09-27

Digitalization is a major transformation in education, particularly in preparing graduates to face the challenges of the Fourth Industrial Revolution and Society 5.0. This study aims to analyze the impact of digital transformation on the work readiness of graduates from the Mechanical Engineering Education Program at Universitas Palangka Raya. Using a literature review method, the study identifies strategies for integrating technology into the curriculum, developing digital literacy, and collaborating with industries to ensure the relevance of graduate competencies. The findings indicate that technology-based curricula, improved digital literacy among educators, and support for educational infrastructure are critical factors in producing competent and adaptable graduates for the global job market. Strategic recommendations include strengthening professional training to enhance digital competencies among educators, integrating digital literacy into the curriculum, and developing digital leadership at the institutional level. Additionally, collaboration among universities, government, and industries is essential to design policies that support sustainable digital transformation. This study provides significant contributions to higher education institutions in designing strategies to improve graduate work readiness in the digital era