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All Journal Jurnal Pendidikan Vokasi PINTER : Jurnal Pendidikan Teknik Informatika dan Komputer Automotive Experiences Bulletin of Chemical Reaction Engineering & Catalysis
Premono, Agung
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering

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Experimental Investigation of Using Thermoelectric Coolers under Different Cooling Methods as An Alternative Air Conditioning System for Car Cabin Sukarno, Ragil; Premono, Agung; Gunawan, Yohanes; Wiyono, Apri; Lubi, Ahmad
Automotive Experiences Vol 7 No 2 (2024)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.11485

Abstract

The cabin car temperature will increase when parked in direct sunlight, so the energy required to cool cabin space by the air conditioner will be higher. This study aims to investigate using a thermoelectric cooling system as an alternative to a chiller system to supply cold air to the car cabin under different cooling methods for parked cars. Experimental testing of thermoelectric cooling systems was conducted to produce cold air that can be applied to car cabins as an alternative to conventional air conditioners. The thermoelectric cooling system was varied with single and double TEC modules. The double TEC modules are arranged in a series of electrical and parallel thermal arrangements. A cooling water block using a mixture of water and ethylene glycol with variations of 0.4 lpm, 0.5 lpm, and 0.6 lpm was added to the hot side of the thermoelectric module. The result shows that the thermoelectric cooling system can work properly during the 2-hour test, which constantly supplies air to the cabin space between 20-25 °C, depending on the configuration of the cooling system. The highest COP of 0.84 was obtained when using the double TEC with heatsink and added 0.5 lpm water cooling system, while the lowest COP of 0.53 was obtained when using the single TEC module without a cooling water block.
Perancangan Aplikasi Basis Data Guna Perawatan Mesin Di Laboratorium Produksi Teknik Mesin Universitas Negeri Jakarta Wirawan, Sigit Pandu; Premono, Agung
PINTER : Jurnal Pendidikan Teknik Informatika dan Komputer Vol. 1 No. 2 (2017): Jurnal PINTER
Publisher : PTIK Fakultas Teknik UNJ

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1322.078 KB) | DOI: 10.21009/pinter.1.2.8

Abstract

Laboratorium dikenal sebagai tempat dimana proses belajar mengajar dilakukan secara praktek menggunakan alat selain proses belajar teori di dalam kelas. Selain itu, kegiatan seperti pendataan alat dan peminjaman alat juga menjadi beberapa pekerjaan tambahan yang harus dilakukan oleh petugas laboratorium. Pekerjaan yang banyak, tentunya tidak dapat dilakukan seorang diri dan dengan cara yang manual seperti menggunakan catatan dalam buku. Penggunaan sistem aplikasi komputer dirasa dapat menjadi solusi dalam menangani berbagai macam pekerjaan yang ada agar dapat berjalan dengan lebih efektif dan efisien. Penelitian ini bertujuan untuk membantu pekerjaan dari petugas laboratorium teknik mesin dan beralih dari sistem manual menjadi sistem yang terkomputerisasi. Dari analisis yang dilakukan, penggunaan aplikasi memang dibutuhkan di dalam laboratorium produksi teknik mesin, demi mengurangi resiko daripada penggunaan buku manual. Sehingga dapat disimpulkan bahwa dengan dibuatnya sistem aplikasi komputer ini dapat menjadi jawaban atas permasalahan yang terjadi di dalam laboratorium teknik mesin UNJ dalam melakukan perawatan mesin.
Industrial assessment to technical and employability skills students based on KKNI (in Jakarta Region) Febriana, Rina; Premono, Agung; Iriani, Tuti
Jurnal Pendidikan Vokasi Vol. 7 No. 3 (2017): November
Publisher : ADGVI & Graduate School of Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (426.809 KB) | DOI: 10.21831/jpv.v7i3.16599

Abstract

This study aims to determine the industrial assessment of technical and employability skills of students. The research was conducted by using survey method in several industries as the place of the Job Training (PKL) of the students. The research technique used purposive random sampling with respondents in this research consist of 23 industry in Jakarta area. The results of the research are (1) the industrial assessment of the technical skills of the students obtained a score of 73.10 with high interpretation; (2) The industry average rating of employability of students skills is 83.10 with very high interpretation.
Preparation, Characterization, and Photocatalytic Activity of Ni-Cd/Al2O3 Composite Catalyst Yusmaniar, Yusmaniar; Premono, Agung; Susetyo, Ferry Budhi; Yudanto, Sigit Dwi
Bulletin of Chemical Reaction Engineering & Catalysis 2023: BCREC Volume 18 Issue 4 Year 2023 (December 2023)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20045

Abstract

This study was conducted to determine the effect of the radiation source and radiation time on the methylene blue (MB) solution by adding Ni-Cd/Al2O3 to the percent degradation of MB. To investigate similar purposes, the pH of the MB solution varied as well. The preparation, characterization, and photocatalytic activity of Ni-Cd/Al2O3 are three steps in this research. The Ni-Cd was prepared by mixing Ni(NO3)2.6H2O and Cd(NO3)2.4H2O. Various concentrations of Ni-Cd were mixed with Al2O3, then heated, stirred, dried, and calcined to form Ni-Cd/Al2O3 powder. The dried powder catalysts were characterized using Field emission scanning electron microscopy (FESEM), Energy-dispersive X-ray spectroscopy (EDS), Brunauer-emmett-teller (BET), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Diffused reflectance spectrometer spectra (DR-UV-Vis). Higher degradation was observed at pH 11, when MB was degraded by 68% and 76% using the 5Ni-2Cd/Al2O3 and 6Ni-1Cd/Al2O3 catalysts, respectively. The 6Ni-1Cd/Al2O3 sample has higher absorption, less surface area, and less band gap; therefore, it has higher performance against degraded MB in the solution. In summary, 6Ni-1Cd/Al2O3 is capable of degrading MB and can be utilized in MB dye waste. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Co-Authors Apri Wiyono Ferry Budhi Susetyo Iriani, Tuti Lubi, Ahmad Rina Febriana Sukarno, Ragil Wirawan, Sigit Pandu Yohanes Gunawan, Yohanes Yudanto, Sigit Dwi Yusmaniar Yusmaniar