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