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Effect of Temperature and Pressure on the Density of Organic Waste Briquettes Riky Satria; Yolli Fernanda; Refdinal Refdinal; Sri Rizki Putri Primandari
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 5 No 3 (2023): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v5i3.246

Abstract

Organic waste is one way of utilizing biomass to produce energy. The advantage of biomass is that it tends to be renewable. The energy from biomass that will be used to make briquettes is processed and compressed into a more regular form with a high calorific value. This research will involve organic waste as a source of biomass. To obtain briquettes that are dense, tight, and in good condition, tests were conducted with various temperature and pressure settings. Organic waste with particle size between 18 and 30 mesh is used in this method. Briquetting using heat-treated molds, with temperatures of 200, 250 and 300 °C with a holding time of 5 minutes and also applying pressures of 5 MPa, 10 MPa, 15 MPa and 20 MPa. At 300 °C, 10 and 20 MPa pressure, the briquettes were dense, tight and had high density values. Sampah organik merupakan salah satu cara pemanfaatan biomassa untuk menghasilkan energi. Keuntungan dari biomassa adalah bahwa hal itu cenderung diperbaharui. Energi dari biomassa yang akan digunakan untuk membuat briket diolah dan dikompresi menjadi bentuk yang lebih teratur dengan nilai kalor yang tinggi. Penelitian ini akan melibatkan limbah sampah organik sebagai sumber biomassa. Untuk mendapatkan briket yang padat, rapat, dan dalam kondisi baik, dilakukan pengujian dengan berbagai pengaturan suhu dan tekanan. Sampah organik dengan ukuran partikel antara 18 dan 30 mesh digunakan dalam metode ini. Pembriketan menggunakan cetakan yang diberi panas, dengan suhu 200, 250 dan 300 ℃ dengan waktu penahanan 5 menit dan juga pemberian tekanan 5 MPa, 10 MPa, 15 MPa dan 20 MPa. Pada suhu 300 °C, tekanan 10 dan 20 MPa dihasilkan briket yang padat, rapat dan memiliki nilai densitas yang tinggi.
Pendidikan Vokasional Dalam Perspektif Filosofi Pragmatisme Hamdani Hamdani; Nizwardi Jalinus; Refdinal Refdinal; Fadhli Ranuharja
Jurnal Pendidikan Teknologi Informasi dan Vokasional Vol 5, No 2 (2023): Jurnal Pendidikan Teknologi Informasi dan Vokasional
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/29278

Abstract

With regard to vocational education, philosophy is the field that studies human life and thought. This study aims to explain how pragmatic philosophy analyzes vocational education, that is, education that focuses on work-ready outcomes. In this situation, pragmatic philosophy is considered a relevant theoretical foundation for guiding curriculum development and learning approaches in vocational education. The data collected in this study is collected through literary studies or research institutions of libraries. Literature sources come from journals on google scholar and scopus. There's a total of 150 relevant papers that are used to describe this penalty. After data collection, analysis and conclusions are made to produce a useful summary. The research discussed in this article shows that the philosophy of pragmatism provides a strong foundation for building vocational education that is responsive to the needs of the world of work.Kata kunci: Pragmatisme, Vokasi, Pendidikan
Effect of Using a Solar Can Heater Collector on the Temperature of a Room at Several External Temperature Variations Willy Vernando; Andre Kurniawan; Refdinal Refdinal; Yolli Fernanda
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 5 No 3 (2023): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v5i3.281

Abstract

This research discusses a heating collector device which functions to warm a room that has a relatively cold temperature so as to create thermal comfort. Thermal comfort greatly influences human performance in activities in a room so that effective performance in a room can be achieved. This collector functions to collect solar heat and increase the temperature of the sun's heat which will then be channeled into a closed room. This collector is in the form of a box measuring 750x450 mm. This collector consists of cans arranged vertically which are useful as a medium for capturing heat and increasing solar heat. The measurement results show that the room heater can warm a cold room at a temperature of 22.4⁰C to 28.2⁰C. and the air heating capacity obtained is 0.24 kJ to 4.58 kJ. Penelitian ini membahas tentang alat kolektor pemanas yang berfungsi untuk menghangatkan ruangan yang memiliki suhu relatif dingin sehingga terciptanya kenyamanan termal. Kenyamanan termal sangat berpengaruh terhadap kinerja manusia dalam beraktifitas di dalam suatu ruangan sehingga dapat tercapai efektifitas kinerja di dalam suatu ruangan. Kolektor ini berfungsi mengumpulkan panas matahari serta memperbesar suhu dari panas matahari yang nantinya akan di alirkan ke suatu ruangan yang tertutup. Kolektor ini berbentuk boks yang berukuran 750x450 mm,kolektor ini terdiri dari kaleng yang disusun secara vertical yang berguna untuk media penangkap panas dan memperbesar panas matahari. Hasil pengukuran menunjukkan bahwa pemanas ruangan dapat menghangatkan ruangan yang dingin pada suhu 22,4⁰C menjadi 28,2⁰C. dan kapasitas pemanas udara yang diperoleh adalah 0,24 kj hingga 4,58 kj.
Case Method-Based Learning in AUTOCAD-Assisted CAD Program Courses Arisman Telaumbanua; Nurhasan Syah; Muhammad Giatman; Refdinal Refdinal; Oskah Dakhi
Edumaspul: Jurnal Pendidikan Vol 6 No 1 (2022): Edumaspul: Jurnal Pendidikan
Publisher : Universitas Muhammadiyah Enrekang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33487/edumaspul.v6i1.4127

Abstract

The purpose of this research is to increase students' understanding of CAD program courses through the application of the case method learning model. This type of research is Classroom Action Research (CAR). This research was conducted to find solutions that can be done so that the potential of each teaching participant can be explored optimally. The subjects of this study were the fourth semester students of the Building Engineering Education Study Program, University of Nias, who at the time of this research were contracting 22 CAD courses. The method of measuring the level of success is carried out in three cycles. The method of data collection was carried out by observation, performance tests, quantitative and qualitative data collection, and data analysis techniques of learning implementation. Based on the results of data analysis and discussion, it was found that the most dominant activity of lecturers in providing lecture material using autocad media could increase student understanding by 0.47 points from cycle 1 to cycle 2 while the increase from cycle 2 to cycle 3 was 0.04 points. Activities in providing explanations to student questions using autocad media can increase student understanding by 0.25 points from cycle 1 to cycle 2 and increase student understanding by 0.27 points. The mastery of students' cognitive learning outcomes increased from cycles 1 to 3, with the percentage of mastery in cycle 1 being 31.82% and cycle 2 being 54.54%, and in cycle 3 being 90.9%. So it is concluded that the application of the case method learning model assisted by autocad media can improve students' understanding of the CAD program material.