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All Journal ELKHA : Jurnal Teknik Elektro Syntax Literate: Jurnal Ilmiah Indonesia JURNAL PENDIDIKAN TAMBUSAI BULETIN AL-RIBAATH Jurnal Pengabdian kepada Masyarakat Vokasi International Journal of Integrative Sciences Kapuas
Joni Rahmadi
Politeknik Negeri Pontianak
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Journal : Vokasi

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Analisis Pengaruh Panas pada Baja Kontruksi dengan Pendinginan Air Sungai dan Air Laut terhadap Kekuatan Mekanik Sutrisno Sutrisno; Azmal Azmal; Joni Rahmadi
Vokasi: Jurnal Publikasi Ilmiah Vol 17 No 1 (2022): Vokasi
Publisher : Politeknik Negeri Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (730.679 KB) | DOI: 10.31573/vokasi.v17i1.452

Abstract

Abstract: Housing, buildings and factories often fire, this can be caused by electric short circuits, explosions of gas stoves. Extinguishing fires can use river water or sea water. This research is expected to get an overview of data about tensile strength, hardness and mechanical properties due to changes in heat temperature and cooling with river water and sea water on steel construction materials with various operational conditions. The materials used are plain reinforcing steel (BJTP), deformed steel and profiled steel (IWF-400) heated in the heating kitchen with variations of 600 , 700 , 800 and 900 , cooled by river and sea water, carried out Vickers tensile strength and hardness test. The results of the tensile test of BJTP increased by 461.55 N/mm2, the highest cooling of river water was 9000C=345.15N/mm2(53.70%), the lowest was 600 =31.13 N/mm2 (4.84 %). The highest deformation was 900℃=345.15 N⁄mm2 (53.70 %), the lowest was 600 =31.13N/mm2 (4.84 %). The highest IWF-400 was 900 =101.32 N/mm2 (18.93 %), the lowest was 600 =10.85 N/mm2(2.03%). Vickers BJTP hardness test is the highest for cooling river water 900 =35.06 HV (41.32%), the lowest is 600 =2.16 HV (2.55%). Deform 900 = 47.28 HV (53.63%), the lowest 600 =3.88 HV (4.40%). IWF-400 900 =15.52 HV (18.89 %), the lowest 600 =1.66 HV (2.02%). As the temperature increases by cooling seawater and river water, the tensile strength and hardness of the vickers also increase
Design Models of Equipment Vapor Compression Refrigeration Cycle To Support Practicum Heat Engine And Fluid Engineering Mikraj, Hadimi; Rahmadi, Joni; Marlina, Dina; Rusadi, Rusadi; Karyadi, Edi
Vokasi: Jurnal Publikasi Ilmiah Vol. 19 No. 1 (2024): Vokasi: Jurnal Publikasi Ilmiah
Publisher : Politeknik Negeri Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31573/jv.v19i1.781

Abstract

The learning method acts as an educational facility that functions to convey learning material to achieve learning goals. It takes creativity from lecturers and those responsible for the teaching and learning process, especially practicum. The results of the study entitled Design Models of Equipment Vapor Compression Refrigeration Cycle To Support Practicum Heat Engine And Fluid Engineering Subject produce a model of a practicum tool that can be used to carry out some practicum contents for refrigeration engines. This model of Vapor Compression Refrigeration Cycle can do several practicums in a refrigeration machine, namely looking for COP from a refrigeration machine, installing a refrigeration machine, incubating a refrigeration machine, pumping down a refrigeration machine and filling in a refrigerating machine. Keywords: Model tools, Vapor Compression, Practicum
Co-Authors Adani AS Afridalianti Afridalianti Agus Rohermanto, Agus Ahmad Faizal Asy'ari, Farida Azmal Azmal Azmal, Azmal Dina Marlina, Dina Dwi Harjono Edi Karyadi Eko Julianto Erlangga Atidhira Hadijaya Farida Farida Fuazen Hasanudin Hastiadi Hasan Hendro Priyatman, Hendro Indra Lukman Ismail Yusuf, Ismail Iswanda, Dovian Jaini Jaini M. Jusri Suganda Putra Maratina, Dina Mikraj, Hadimi Nurhaidah Nurhaidah Rusadi, Rusadi Sutrisno Sutrisno Sutrisno, Sutrisno Tri Pratomo Tuti Puji Lestari Widodo Widodo