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All Journal AUSTENIT Turbo : Jurnal Program Studi Teknik Mesin APTEK Indonesian Journal of Engineering and Science (IJES) Jurnal Teknologi MACHINERY: Jurnal Teknologi Terapan Jurnal Masyarakat Madani Indonesia Jurnal Foundry International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS)
HIDAYATI, BAITI
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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Journal : AUSTENIT

 1 
AIR MOISTURE ANALYSIS OF POTATO DEHUMIDIFICATION PROCESS USING THE REFRIGERATION SYSTEM HIDAYATI, BAITI; ., Baharuddin; Wahyudi, Reza
AUSTENIT Vol. 12 No. 1 (2020): AUSTENIT: April 2020
Publisher : Politeknik Negeri Sriwijaya, Indonesia

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Abstract

The refrigeration system is one of the technologies used to condition thetemperature of the air either by heating or cooling, in general refrigeration iscommonly used for human comfort needs and also for the freezing process. Inthis research, refrigeration is used for the process of drying potatoes using adehumidification method, which is the reduction of moisture in the air vapor.Potatoes will be cooled using a refrigeration process and then will be heatedusing a heater, data collection is carried out at a temperature of 600C heater, withdata collection each of 60 minutes, 120 minutes and 180 minutes. From theresults obtained, the dehumidifier method using a refrigeration system can drypotatoes to shrink 60% and humidity can be reduced to 83.3%.
PENERAPAN SISTEM REFRIGERASI PADA ALAT PEMBUAT ASAP CAIR UNTUK PENGOPTIMALAN HASIL PRODUKSI Sumarna, Herlin; ., Haryanto; Hidayati, Baiti; Homzah, Ozkar F
AUSTENIT Vol. 12 No. 2 (2020): AUSTENIT: Oktober 2020
Publisher : Politeknik Negeri Sriwijaya, Indonesia

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Recently, liquid smoke is widely used for various needs, both for food purposes and for freezing rubber latex. Liquid smoke began to grow due to the large demand, also using biomass / waste as a base material. Immediate production results are needed by the condensation process. The application of the refrigeration system guides the temperature of the air which is used as a cooling medium in the condensation process during the process of making liquid smoke. This study uses coconut shell as raw material for pyrolysis, and there are 4 temperature variations that are applied in the liquid smoke production process. First without a refrigeration system, the application of a refrigeration system with temperature variations of 22 ° C, 18 ° C and the last one is 15 ° C. The data is taken every 30 minutes for 6 hours. Based on the research results, it was found that the maximum production results using the refrigeration system at an air temperature of 15 ° C, resulted in 375 ml of liquid smoke. Keywords: Liquid Smoke, Refrigeration, Pyrolysis, Coconut Shell
ANALISIS KELEMBABAN UDARA PADA AC SPLIT WALL USIA PAKAI 8 TAHUN DENGAN KAPASITAS 18000 Btu/hr HIDAYATI, BAITI; Irawan, Ferry; Biola, Yolanda
AUSTENIT Vol. 13 No. 1 (2021): AUSTENIT: April 2021
Publisher : Politeknik Negeri Sriwijaya, Indonesia

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Abstract

Penyejuk udara biasa yang di kenal dengan istilah AC semakin banyak beredar karena dapat memberikan kenyamanan pada manusia. Untuk memperoleh kenyamanan pada manusia memiliki batas temperatur dan kelembaban, banyak faktor yang dapat mempengaruhi kenyamanan manusia baik temperatur maupun kelembaban. Berdasarkan hal tersebut dilakukan penelitian sistem pendingin yang akan berpengaruh terhadap temperatur, RH (Relative Humidity) dan humidity ratio pada AC dengan kapasitas 18000 Btu/hr dengan volume ruangan 200m3. Berdasarkan hasil penelitian di dapat bahwa mesin pendingin yang sudah berusia 8 tahun masih mampu menjaga temperatur dan kelembaban nyaman manusia, temperatur dapat mencapai 22,30C dan pengurangan kelembaban maksimal mencapai 16,4 gr/kg.   
PENGEMBANGAN MESIN PEMBUAT BRIKET BATOK KELAPA KAPASITAS 10 KG SEBAGAI UPAYA MENINGKATKAN EFISIENSI PRODUKSI PADA KELOMPOK TANI DI LALAN, KABUPATEN MUSI BANYUASIN Rasid , M.; Hidayati, Baiti; Sumarna, Herlin; Romli, Romli; Wijaya , Aji Pangestu; Ghinatajaya , Labib
AUSTENIT Vol. 17 No. 2 (2025): AUSTENIT: Oktober 2025
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v17i2.11420

Abstract

Charcoal briquettes are an environmentally friendly alternative energy source; however, conventional production is hampered by the slow and labor-intensive manual molding process. This study aims to improve production efficiency for farmers in Lalan, Musi Banyuasin, by designing and testing a screw-type charcoal briquette press machine powered by an electric motor. The machine is designed with a capacity of 10 kg per cycle, using coconut shell charcoal powder as the test material. The research methods include the design, fabrication, and performance testing through a comparative study of the machine and manual molding processes, as well as product uniformity evaluation. The results show a significant increase in production rate. The screw machine is able to produce an average of 24 briquettes in 50 seconds, while the manual method only produces 5 briquettes in the same time, indicating an approximately 4.8-fold increase in output. The machine's measured capacity reaches 32.29 kg/hour under extended testing conditions, and the briquettes produced are uniform according to the mold. Based on the test results, the machine demonstrates greater efficiency as the molding time increases, with a total output of 144 briquettes in 300 seconds, while the manual method only produces 30 briquettes in the same time. This study concludes that the implementation of the screw-type briquette press machine effectively accelerates the production process, reduces reliance on manual labor, and has the potential to increase the economic value of biomass waste for small- to medium-scale enterprises.
FINITE ELEMENT ANALYSIS USING ANSYS OF THE PHASE CHANGE MATERIAL (PCM) COOLING SYSTEM ON A 3V LIFEPO4 BATTERY CELL FOR BATTERY PACK APPLICATION Shafatullah, Teyzar; Hidayati, Baiti; A.F Rosli, Mohd
AUSTENIT Vol. 18 No. 1 (2026): Austenit: April 2026
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36257/austenit.v18i1.11876

Abstract

Passive thermal management in LiFePO₄ cells was evaluated using three Phase Change Material (PCM) formulations through transient thermal analysis in ANSYS Workbench at charging rates of 1 C, 2 C, and 3 C. The PCM tested consisted of PCM1 (90 wt% paraffin + 10 wt% expanded graphite), PCM2 (n-docosane), and PCM3 (Suntech P116 paraffin wax). At a speed of 1 C, PCM1 produced the most even temperature distribution with a range of only 26.03–27.45 °C (ΔT ≈ 1.42 °C), PCM2 showed a peak temperature of 27.50 °C, while PCM3 succeeded in suppressing the peak temperature to the lowest value of 27.04 °C. At a speed of 2 C, PCM1 maintained an even temperature distribution in the range of 39.67–54.73 °C (ΔT ≈ 15.1 °C), PCM2 recorded the highest peak temperature of 56.28 °C, and PCM3 reached the lowest peak temperature of 53.54 °C. At a discharge rate of 3 C, PCM1 minimizes the temperature gradient with the same range of 39.67–54.73 °C (ΔT ≈ 15.1 °C), PCM2 acts as a heat buffer with a peak temperature of 56.28 °C, while PCM3 remains the most effective in suppressing the peak temperature to 53.54 °C. Overall, PCM1 excels in maintaining the uniformity of temperature distribution, while PCM3 consistently produces the lowest peak temperatures across all tested charging rates, making it the strongest candidate for fast charging applications in LiFePO₄ cells.
Co-Authors A.F Rosli, Mohd Ahmad Imam Rifa’i Ahmad Junaidi Ali Medi Anwar, Zainuri Arnoldi, Dwi Baharuddin Patandjengi Biola, Yolanda Ferry Irawan Ghinatajaya , Labib Haryanto . Homzah, Ozkar F Irwin Bizzy Jayakumar, Pravin Cheti A/L Mila, Andika Nopriansyah Muhammad Irfan Dzaky Mukhtamar, Azis Nasution, Gaizka Ghifari Nasution, Ghifari Negash, Semir M Nursyawal, Wira Agung Okviyanto, Toni Putra, Muhammad Rizky Tolusha Putri, Fenoria Ramadhoni, Tri Satya Rasid , M. Rasid, Muhammad Rifa'i, Ahmad Imam Rifa’i, Ahmad Imam Riman Sipahutar Rohmatullah, Nadiyah Romli Romli, Romli Sampurno, Rachmat Dwi Satya Ramadhoni, Tri Shafatullah, Teyzar Soegeng Witjahjo Sumarna, Herlin Sunarso, Edi Syamsul Rizal Wahyudi, Reza Wijaya , Aji Pangestu Zainuri Anwar Zamheri, Ahmad Zikri, Ahmad