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All Journal Teknika Journal of Geoscience, Engineering, Environment, and Technology JTM-ITI (Jurnal Teknik Mesin ITI) JURNAL PENDIDIKAN TAMBUSAI Journal of Education Technology Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Teknik Mesin Cakram Jurnal Teknik Mesin Indonesia Jurnal Pendidikan dan Konseling Majamecha TRIDARMA: Pengabdian Kepada Masyarakat (PkM) JURNAL ILMIAH SIMANTEK Bubungan Tinggi: Jurnal Pengabdian Masyarakat Sprocket : Journal of Mechanical Engineering Jurnal Darma Agung BERNAS: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara Bioscientist : Jurnal Ilmiah Biologi Nusantara Hasana Journal Jurnal Pengabdian kepada Masyarakat ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Jurnal Abdimas Bina Bangsa Abdi Jurnal Publikasi EDUCTUM: Journal Research Indonesian Research Journal on Education Innovative: Journal Of Social Science Research Social Engagement: Jurnal Pengabdian Kepada Masyarakat Abdimas Mandalika Journal of Engineering Science and Technology Management AutoMech : Jurnal Teknik Mesin Jurnal Pengabdian Masyarakat dan Riset Pendidikan Journal of Community Empowerment Jurnal Ilmiah Nusantara International Journal of Technology and Education Research Jurnal Penelitian Teknik dan Pengelolaan Sumberdaya Perairan Prosiding Seminar Nasional Ilmu Komputer, Sosial Sains, Teknik Dan Multi-disiplin Ilmu Jurnal Pengabdian Masyarakat Indonesia Journal of Global Research Publications
SIANTURI, TAMBOS AUGUST
Program Studi Teknik Mesin Universitas HKBP Nommensen Pematangsiantar
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Journal : journal of engineering science and technology management

 1 
Analysis of the Effect of Boiling Time on Oil Yield Palm oil at PTPN IV Mayang Plantation Luat Surya Napitupulu; Tambos August Sianturi
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 1 (2026): Maret 2026
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v6i1.371

Abstract

The boiling process of fresh fruit bunches (FFB) at PTPN IV Kebun Mayang is carried out using a semi-automatic system using a horizontal steam pressure sterilizer. This study analyzed three boiling time programs, namely 85 minutes, 90 minutes, and 95 minutes, with a triple peak pressure system. The purpose of the study was to determine the most optimal boiling time to obtain the potential palm oil yield. The method used was a direct experiment with quantitative and qualitative observations of the potential of fresh fruit bunches (FFB) and oil yield. The results showed that the average RMS of the 85-minute experiment was 16.98%, the average RMS of the 90-minute experiment was 23.76%, and the average RMS of the 95-minute experiment was 19.44%. In conclusion, the 90-minute boiling time appears to provide the most balanced results. Boiling that is too short results in low yields while boiling that exceeds the optimum limit also tends to reduce the quality or amount of extractable yield.
The Effect of Freezing Time on the Melting Time of Ice Blocks at PT Siantar Ice Factory Calvin Klein Sitanggang; Tambos August Sianturi
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 1 (2026): Maret 2026
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v6i1.376

Abstract

The background of this study is based on the needs of the ice block industry for products with higher resistance to melting in order to maintain distribution quality and improve operational efficiency. This research aims to analyze the effect of freezing duration on the melting time of ice blocks and to determine the most optimal freezing time among 24 hours, 27 hours, and 30 hours. The research methodology employs a mixed-method approach through direct observation conducted during Field Work Practice (PKL). Quantitative data were obtained from measurements of the melting time of ice blocks produced under three different freezing durations with three repetitions, while qualitative data were collected from observations of the freezing process and the physical condition of the ice. The freezing process was carried out at a temperature range of −10°C to −15°C using a brine-based cooling system. The results indicate that freezing for 24 hours produces an average melting time of 8.5 hours, freezing for 27 hours results in an average melting time of 10.2 hours, and freezing for 30 hours results in an average melting time of 12.5 hours. These findings demonstrate that longer freezing durations lead to increased melting time of ice blocks. Freezing for 30 hours provides the longest melting time and is considered the most optimal in enhancing resistance to melting.
Co-Authors Ady Frenly Simanullang Amdan Hendrico Aritonang Andi Sitompul, Hery Anwar Hotris Simatupang Apriani Sijabat Ayub Januari Sidauruk Benni galius simangunsong Calvin Klein Sitanggang Christa Voni Sinaga Christophe Jestius Sipayung Daniel Tony Edyt Siburian Efrata Tarigan Elfrido Lorensius Lumbangaol Epanro Natanael Simanjuntak Faisal Siagian Frans Willis Siregar Gestian Janperdi Sianipar Girsang, Marensius Goldbert Harmuda Duva Sinaga gultom, Boini Pardamean Gunawan Simanjuntak Handoco, Ewin Herna Febrianty Sianipar Herna Febrianty Sianipar Herna Febrianty Sianipar Iwan Apriando Simanjuntak Jan Hary Siburian Jefri Ando Siadari Jepry Simanjuntak Jhon Sufriadi Purba Jhon Supriadi Purba Jhon Supriadi Purba Jhon Supriadi Purba Joko Barita Sianipar Jose Mikael Saragih Juan Sihombing Juanda Purba kevin pratama hasudungan, kevin pratama hasudungan Liston Simamora Luat Surya Napitupulu MANALU, ERVIN Manurung, Marito Yanti Mardame Sinaga Michael Hardianto Munthe Moses Novianus Purba Mungkap Mangapul Siahaan Naibaho, Winfrontstein Naibaho, Winsfronstein Nofyando Simalango Oges Ivendo Saragih ompusunggu, ungkap Panjaitan, Abryan Termedia Pastron Simanjorang Purba, Angga Purba, Jhon Purba, Jhon Sufriadi Purba, Moses Novianus Purba, Rudiarman Putra Samuel Putra Samuel Manihuruk Rahul Depri Simanjuntak Rando Wijaya Sidauruk Regi Chandela Situmorang Rudi Adolt Sihombing Ryan Eberson Garingging Sahat Sahat Sahat Sitompul Saloom Hilton Siahaan Saragi, Jandri Fan HT Saragih, Oges Saragih, Oges Ivendo Saragih Seti Damanik Shalom Hilton Siahaan Siahaan, Azarya NJ Siahaan, Theresia Monika SIBURIAN, JAN HARY SIBURIAN, JAN HARY I. SIBURIAN Siburian, Niko SIHOMBING, ANDREAS VENSEN Sihombing, Fiktor Simanjuntak, Bernard simanjuntak, Rahul Sinaga, Mardame Pangihutan Sindak Hutauruk Sipayung, Fitri Maria Goretti Siti Imroatul Maslikah Situmorang, Regi Sri Devi Marchelina Siahaan Surya Seftian Sidabalok Tampubolon, Kevin Pratama Tarigan, Efrata Togar Naibaho Welmar Olfan Barat, Welmar Olfan Win Fronstein Naibaho Win Fronstein Naibaho Winfonstein Naibaho Winfronstein Naibaho Yabes Cristian Nainggolan