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All Journal Angkasa: Jurnal Ilmiah Bidang Teknologi Jurnal Manajemen dan Teknologi Rekayasa
Eko Poerwanto
Institut Teknologi Dirgantara Adisutjipto
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Peningkatan Efisiensi Penggunaan Bahan Bakar Terhadap Produktivitas Hasil Proses Penyulingan Sereh Wangi Menggunakan Sistem Kohabasi Untuk Mendukung Kegiatan Agro-Industri Eko Poerwanto; Kris Hariyanto
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 14, No 1 (2022): Mei
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1078.249 KB) | DOI: 10.28989/angkasa.v14i1.1217

Abstract

One way to isolate essential oils from essential oil-producing plants is by distillation. Distillation is the separation of components in the form of a liquid consisting of two or more kinds of mixtures based on differences in boiling points. The process is carried out on essential oils that are not soluble in water. The distillation process that has been used so far is by using steam and water, because the equipment construction is cheaper and simpler. However, steam and water distillation has a disadvantage, namely that it requires more water vapor. This will result in a certain amount of steam condensing in the plant tissue so that the material will get wetter so that it will increase the use of fuel and will reduce the productivity of the distillation process. To overcome this, it is necessary to strive for a more effective distillation system.This research was conducted with the aim of increasing the combustion efficiency of the essential plant distillation process, namely citronella, so that it is expected to increase the productivity of the distillation. This research was carried out by changing the distillation system using the cohobation system. Boyolali.The results showed that the efficiency of the kohobasi furnace distillation system was 0.85% higher than the steam distillation system, these results were in line with the productivity level of the citronella oil distillation production process, so for the work program of the Guli Village Government it was recommended to use the kohobasi furnace distillation system
Perancangan Pompa Sirkulasi Air Pendingin Dengan Energi Surya Untuk Meningkatkan Kehandalan Proses Penyulingan Sereh Wangi Menggunakan Sistem Kohabasi untuk Mendukung Kegiatan Agroindustri Di Kepanewon Galur Kabupaten Kulon Progo Eko Poerwanto; Kris Hariyanto
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 2, No 1 (2023): Januari
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v2i1.1484

Abstract

Penyulingan adalah pemisahan komponen yang berupa cairan terdiri dari dua macam campuran atau lebih berdasarkan perbedaant itikdidih. Proses tersebut dilakukan pada minyak atsiri yang tidak larut dalam air. Pada penelitian sebelumnya telah dilakukan analisa terhadap penyulingan dengan sistem kohobasi. Sistem penyulingan ini menggunakan pendingin air yang disirkulasikan didalam alat penukar panas, dimana uap hasil penyulingan akan menjadi embun karena panasnya terserap oleh aliran air pendingin yang mengalir berlawanan arah. Proses pemompaan air pendingin dilakukan dengan menggunakan pompa air kolam berkapasitas 60 liter per menit dengan sumber arus listrik 220 AC/60 watt. Pada saat proses penyulingan dilakukan, apabila terjadi pemadaman listrik,maka proses penyulingan akan terhenti, sehingga akan merugikan proses produksi dimana pada saat sirkulasi air pendingin terhenti,maka uap hasil penyulingan tidak dapat berubah menjadi tetesan minyak. Penelitian ini akan dilakukan dengan tujuan untuk meningkatkan kehandalan pada proses penyulingan tanaman atsiri yaitu sereh wangi,sehingga diharapkan akan meningkatkan produktifitas hasil penyulingan.Penelitian ini dilaksanakan untuk mendukung kegiatan agroindustri di Kecamatan Galur Kabupaten Kulon Progo.  Proses Penyulingan dengan menggunakan  energi surya untuk catu daya pompa air  pada sitem pendingin  menunjukkan tingkat kehandalam lebih baik dari pada menggunakan catu daya  dari PLN sebagai penggerak sirkulasi air. Pemanfaatan tenaga surya sebagai penggerak pompa air DC (Direct Current) pada proses sirkulasi pompa pendingin dirancang dengan menggunakan beberapa alat diantaranya: fotovoltaik 100 Wp jenis polycrystalline, DC stepdown LM 7812, serta pompa air DC 12 V.
Identification and Risk Management Efforts In Supply Chain Activities Using The House Of Risk Method In Sempe Arimanis Small and Medium Enterprises Dindi Asparilla Putri Sutanto; Yasrin Zabidi; Suhanto Suhanto; Riani Nurdin; Eko Poerwanto; Prasidananto Nur Santoso
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 2 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i2.2477

Abstract

Sempe Arumanis, a small and medium enterprise (SME), operating in Yogyakarta and producing Sempe Arumanis, faces supply chain risks such as inaccurate orders, late supplies, and damaged raw materials. Therefore, risk management is needed to identify and mitigate the risks present in the SME. Therefore, risk identification is necessary to minimize these risks. The House of Risk (HOR) method is used to identify risks and take preventive measures. The results of the analysis revealed three high-frequency risks faced by Sempe Arumanis small and medium enterprises: a lack of historical data or accurate information, dependence on a single supplier, and restrictions on raw material purchases that disrupt operations and customer satisfaction. Risk management measures include seeking more than one supplier, routinely checking stock, labeling shelves, negotiating contracts and inventory, conducting quality checks before shipment, training in quality control, communicating between sales and warehouse teams, and implementing an integrated system.
Co-Authors Dindi Asparilla Putri Sutanto Kris Hariyanto Nurdin, Riani Prasidananto Nur Santoso Suhanto Suhanto yasrin zabidi