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All Journal International Journal of Science, Engineering and Information Technology DedikasiMU: Journal of Community Service JUSTI (Jurnal Sistem dan Teknik Industri) Logic : Jurnal Rancang Bangun Dan Teknologi
Ningtyas, Alviani Hesthi Permata
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Religion Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Medicine & Pharmacology Social Sciences

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PENGOLAHAN LIMBAH SAMPAH ORGANIK DAN NON-ORGANIK MENJADI BAHAN BAKAR ALTERNATIF Muhamadin, Rilo Chandra; Ningtyas, Alviani Hesthi Permata; Pahlawan, Ilham Arifin; Hidayatullah, Rizkyansyah Alif; Hidayat, Hidayat; Mariansyah, Purwaningtyas Noor
JUSTI (Jurnal Sistem dan Teknik Industri) Vol 4 No 3 (2023): justi
Publisher : Universitas Muhammadiyah Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30587/justicb.v4i3.7774

Abstract

Kebutuhan energi semakin meningkat seiring dengan perkembangan zaman dan pertumbuhan jumlah penduduk. Persediaan bahan bakar fosil semakin berkurang sebab bahan bakar ini termasuk energi yang tidak dapat diperbaharui (unrenewable), namun permintaannya semakin tinggi seiring meningkatnya pertumbuhan penduduk. Briket dapat dimanfaatkan sebagai energi bahan bakar menggunakan teknik densifikasi. Penelitian ini merupakan bentuk kontribusi peneliti untuk mensukseskan program ekonomi hijau yang ada di Indonesia. Produk briket dari sampah ini bertujuan untuk mengurangi volume sampah yang tidak tertangani dengan baik. Penelitian ini dilakukan di UPT TPA Kabupaten Gresik dan dilakukan menggunakan mesin Refuse Derived Fuel (RDF) untuk membantu proses pemilahan sampah. Setelah pemilahan sampah dilakukan, sampah organik dikeringkan dan dimasukkan kedalam mesin predator untuk. Briket yang telah dihasilkan kemudian diuji kadar air, abu, karbon terikat, zat terbang, dan nilai kalori. Dari hasil pengujian didapatkan nilai kadar air 4,67%, kadar abu 10,42%, kadar karbon terikat 77,21%, kadar zat terbang 7,69% dan nilai kalori 8.132 kalori/gram. Hasil pengujian kemudian dibandingkan dengan standar briket yang telah ditetapkan di Indonesia SNI No.1/6235/2000. Hasil perbandingan briket yang dihasilkan dengan standar SNI menyatakan bahwa parameter kadar air, karbon terikat, zat terbang dan nilai kalori sudah seusai dengan standar SNI. Namun pada kadar abu briket yang dihasilkan belum sesuai dengan standar SNI.
SOSIALISASI RISET TERAPAN DI SMKN 1 PUNGGING Ningtyas, Alviani Hesthi Permata; Pahlawan, Ilham Arifin; Muhamadin, Rilo Chandra; Firmansyah, Wahyu Reza; Azmi, Rohmat Bahaudin; Hidayat; Moh. Jufriyanto
DedikasiMU : Journal of Community Service Vol. 5 No. 2 (2023): DedikasiMU Juni 2023
Publisher : Universitas Muhammadiyah Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30587/dedikasimu.v5i2.5604

Abstract

Pendidik atau guru mempunyai tuntutan untuk selalu berkembang. Kewajiban seorang pendidik yaitu melakukan pendidikan, tetapi mendapat nilai tambah jika bisa melakukan penelitian. Penelitian merupakan kegiatan yang dilakukan untuk memeriksa sebuah kondisi. Kegiatan memeriksa nantinya akan didokumentasikan dalam bentuk jurnal yang bisa dipublikasikan dan bisa dijadikan acuhan bagi peneliti lain. Guru bisa melakukan penelitian sesuai dengan bidang keilmuannya. Kompetensi keahlian dibidang proses permesinan bisa melakukan yang penelitian yang memberikan solusi secara praktis. Dimana hasil penelitian bisa digunakan untuk praktikum bubut siswa SMKN 1 Pungging Proses permesinan dengan alat bubut memerlukan tingkat penghilangan material yang tinggi sehingga dari proses penghilangan material bisa dijagikan variable yang akan dilakukan dengan riset terapan. Hasil dari riset terapan adalah mengetahui pengaturan kecepatan spindle, gerak umpan dan kedalaman umpan dalam menghasilkan proses manufaktur yang efeksif dan efisien. Setelah mengetahui pengaturan yang efektif dan efisien, guru bisa menggunakan pengaturan tersebut dalam memproduksi produk yang dijual di Badan Layanan Umum Daerah (BLUD) dan mengembangkan kinerja SMK.
Analysis Of Load Variations On ST 60 Steel Using Vickers Method Hidayat, Hidayat; Jufriyanto, Moh.; Ningtyas, Alviani Hesthi Permata; Yusron, Rifky
International Journal of Science, Engineering, and Information Technology Vol 5, No 1 (2020): IJSEIT Volume. 05 Issue. 01 DECEMBER 2020
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/ijseit.v5i1.8940

Abstract

The use of metal in the industrial world, especially ST60 Steel, is a very vital need, this can be seen from the increasing number of machine or equipment components or construction parts made of steel. Hardness is one of the mechanical properties that is often used as a guide in selecting materials for an equipment component. To find out the hardness price of a material, various testing methods can be used, including the Vickers method, which is tested by applying a force to the indented diamond pyramid against the material for which the hardness value is determined. The amount of hardness value is determined by the magnitude of the loading force divided by the area of indentation. In this study, what was investigated was the effect of force on the hardness of the Vickers method. The results showed that the load variation had little effect on the results of the Vickers hardness value, especially for high loads (100 Kgf). The average hardness value for the mild steel being tested is 163 HV and 168 HV, the highest hardness value is 174 HV and the lowest hardness value is 156 HV, so that a tolerance of ± 10 HV commonly used in the Vickers test is sufficient.Keywords: Hardness, ST 60 Steel , Loading Variations, Vickers Test
EXPERIMENTAL AND CFD ANALYSIS OF A LABORATORY-SCALE PARALLEL FLOW SHELL AND TUBE HEAT EXCHANGER Ningtyas, Alviani Hesthi Permata; Rosady, Siti Duratun Nasiqiati; Pahlawan, Ilham Arifin; Muhamadin, Rilo Chandra
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 26 No. 1 (2026): March
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

A heat exchanger is a device that functions to change the temperature of a fluid by utilizing the heat transfer mechanism from a high-temperature fluid to a lower-temperature fluid. This study was conducted to design and analyze the performance of a shell and tube heat exchanger with a parallel flow configuration on a laboratory scale. The design process focused on determining the main dimensions and components, such as tube length and the ratio between shell and tube diameters, to ensure optimal operation for laboratory experiments. After the device was successfully fabricated, experiments were carried out to obtain temperature data of the hot and cold fluids at both the inlet and outlet. These experimental data were then compared with the results of numerical simulations using ANSYS Fluent software based on the Computational Fluid Dynamics (CFD) method. The simulation was used to visualize the flow pattern and temperature distribution within the heat exchanger, as well as to calculate heat transfer efficiency. The results showed good agreement between the simulation and experimental data, with only a 1% deviation, where the inlet temperature of the hot fluid was 65°C and the outlet temperature was 38°C, indicating the validity of the numerical model used. From this study, it can be concluded that the combination of experimental design and CFD simulation analysis provides a more comprehensive understanding of the temperature distribution and efficiency of a shell and tube heat exchanger with a parallel flow configuration.
Co-Authors Azmi, Rohmat Bahaudin Firmansyah, Wahyu Reza Hidayat Hidayat Hidayat Mariansyah, Purwaningtyas Noor Moh. Jufriyanto Moh. Jufriyanto Muhamadin, Rilo Chandra Pahlawan, Ilham Arifin Rizkyansyah Alif Hidayatullah Siti Duratun Nasiqiati Rosady Yusron, Rifky