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All Journal Cakrawala Pendidikan Jurnal Pendidikan Kewarganegaraan Undiksha Indonesian Journal of Applied Linguistics (IJAL) Jurnal Mentari Transmisi Rekayasa Mesin SAMARAH: Jurnal Hukum Keluarga dan Hukum Islam JURNAL SERAMBI ILMU Diglosia: Jurnal Kajian Bahasa, Sastra, dan Pengajarannya Jurnal Media Elektro : Journal of Electrical Power, Informatics, Telecommunication, Electronics, Computer and Control System JURNAL PENDIDIKAN TAMBUSAI Jurnal Peternakan Nusantara Shirkah: Journal of Economics and Business ACTIVE: Journal of Physical Education, Sport, Health and Recreation DIKEMAS (Jurnal Pengabdian Kepada Masyarakat) Musamus Journal of Physical Education and Sport (MJPES) Best Journal (Biology Education, Sains and Technology) Reswara: Jurnal Pengabdian Kepada Masyarakat Management of Zakat and Waqf Journal (MAZAWA)) INSPIREE: Indonesian Sport Innovation Review Proceeding International Seminar of Islamic Studies Jurnal Iqtisaduna Share: Jurnal Ekonomi dan Keuangan Islam Jurnal Derma Pengabdian Dosen Perguruan Tinggi (Jurnal DEPUTI) Akademika : Jurnal Pemikiran Islam Journal of Education, Cultural, and Politics Nusantara of Engineering (NOE) Proceeding Applied Business and Engineering Conference Studies in English Language and Education Revenue: Lentera Bisnis Manajemen Amal: Jurnal Ekonomi Syariah Ar Rehla: Journal of Islamic Tourism, Halal Food, Islamic Traveling, and Creative Economy Jurnal Polimesin Journal Of Sustainable Education (JOSE) Jurnal Agripet TANJAK : Jurnal Pengabdian Kepada Masyarakat Journal of Agrotechnology and Sustainability AGROBUN: Jurnal Ilmu Pertanian Asian Journal of Muslim Philanthropy and Citizen Engagement Kesmas: Jurnal Kesehatan Masyarakat Nasional (National Public Health Journal) Jurnal Pengabdian Keolahragaan dan Sains Jurnal bahasa, sastra, seni, dan pengajarannya
Razali Razali
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Journal : Jurnal Polimesin

 1 
Experimental study on the effect of drying temperature on the final quality of dried fish Syuhada, Ahmad; Razali, Razali; Rizkia, Rizkia
Jurnal Polimesin Vol 23, No 1 (2025): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i1.5376

Abstract

The production of dried fish is a key community efforts to increase the economic value of fish in the Aceh region, with most product sold in traditional markets. To improve the community's economy, the quality of dried fish must be enhanced to meet the standards of modern markets. This research aims to improve the production system and quality of dried fish. The study examines the effect of drying temperature on the quality of dried fish by comparing two methods: constant drying temperature and gradual reduction. The constant drying temperature was set at 80°C, while the gradual reduction started at 80°C and decreased by 10°C every 2 hours until reaching 60°C. The results showed that the drying temperature significantly impacts the final quality of dried fish. Drying at a constant temperature of 80°C resulted in a harder texture and darker color of the dried fish compared to the gradual reduction method. This is due to the rapid heat and mass transfer processes causing case hardening in the fish, making its texture harder. This research provides valuable insights to improve the drying process and ensure the production of high-quality dried fish.
Characteristics of temperature uniformity system in multi-tier drying equipment with sharp turning technology afandi, dedi; Syuhada, Ahmad; razali, razali; maulana, muhammad ilham
Jurnal Polimesin Vol 22, No 2 (2024): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i2.4693

Abstract

Drying is a process of heat and mass transfer that occurs on the surface and within the material to be dried. It helps reduce the internal moisture of the material, inhibiting the growth, damage, and chemical changes of microorganisms during storage, thus extending the shelf life of dry materials and improving the quality of raw materials. This study aims to test multi-level drying equipment using combustion heat with a square shape and racks inside it used as the drying space for the material. The raw material was placed on racks made of perforated metal. This  research started from designing the drying equipment system, fabricating and testing system. The drying system was tested using fish and cocoa beans as sample materials. The tested equipment system included temperature distribution in the combustion chamber, distribution system of hot combustion gases through sharp turning technology, uniform temperature distribution in the drying chamber with 8 levels of racks, each capable of holding a load of 10 kg, and testing of the chimney system. The research findings concluded that to maintain a drying chamber temperature of 90⁰C, an average combustion chamber temperature of 339⁰C was required. The average combustion chamber temperature needed to maintain a drying chamber temperature of 80⁰C was 290⁰C. For a drying chamber temperature of 70⁰C, an average combustion chamber temperature of 314⁰C was required. The temperature distribution inside the drying chamber moves horizontally, indicating that the temperature distribution in the drying chamber was uniform for each drying rack.
Design optimisation of a shell-and-tube heat exchanger for cold energy recovery in LNG regasification Irfansyah, Haiqal; Sofyan, Sarwo Edhy; Razali, Razali; Tamlicha, Akram
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.5589

Abstract

The efficient utilisation of energy resources is a key concern in industrial operations, particularly within the liquefied natural gas (LNG) sector. During the regasification process, substantial amounts of cold energy are released as LNG transitions from its liquid to gaseous state. This cold energy, often wasted by being discharged into the environment, presents an opportunity for recovery and use in various applications such as cold storage and data centre cooling. While the utilisation of LNG cold energy has been widely explored for specific applications, including data centre cooling, electricity generation, and cryogenic systems, existing studies typically focus on individual technologies rather than a comprehensive optimisation of heat exchanger design for cold energy recovery. Therefore, there remains a significant gap in optimising heat exchanger configurations that maximise cold energy extraction while enabling broader industrial integration. This study addresses that gap by optimising the design of a shell-and-tube heat exchanger to recover cold energy from the LNG regasification process at PT Perta Arun Gas, based on an LNG flow rate of 30 million standard cubic feet per day (MMSCFD). The design optimisation was performed using Aspen Exchanger Design and Rating (Aspen EDR) software. Propane was selected as the secondary fluid for extracting cold energy from LNG due to its exceptionally low-temperature performance (freezing point: -188°C) and proven safety in food-related environments. The shell-and-tube heat exchanger design was optimised by the standards and configurations defined by the TEMA designation. The resulting optimal configuration comprises a shell-and-tube heat exchanger with a tube diameter of 13 mm, a tube length of 2,550 mm, a shell diameter of 162.74 mm, a baffle pitch of 135 mm, 16 baffles, a single tube pass, and 54 tubes. This design achieves a heat transfer rate of 478.5 kW, with an estimated cost of USD 23,895.
Thermal performance of desiccant-integrated and conventional Maisotsenko cooling systems in a high humidity tropical climate Irfansyah, Haiqal; Sofyan, Sarwo Edhy; Razali, Razali
Jurnal Polimesin Vol 24, No 1 (2026): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i1.7392

Abstract

Tropical regions are characterized by a distinctive climate, marked by consistently high temperatures and significant humidity throughout the year. These conditions necessitate the use of cooling systems to ensure thermal comfort. Previous studies have shown that the Maisotsenko cooling system experiences a decline in efficiency when operating in high-humidity environments. Conversely, desiccant systems are effective in reducing air humidity. This study aims to design and experimentally evaluate the performance of a Maisotsenko cooling system under high-humidity tropical conditions, as well as the effect of integrating a desiccant system on its cooling efficiency. The experiments were conducted using a laboratory-scale fabricated test rig, consisting of a Maisotsenko cooling unit with a channel length of 180 mm and a desiccant unit with a channel length of 140 mm. Tests were performed using a standalone Maisotsenko system and a combined Maisotsenko-desiccant system. Air velocity was varied at 3 m/s, 4 m/s, and 5 m/s, with an air ratio of 0.5. The results showed that for the Maisotsenko system without a desiccant, the best cooling performance under high humidity conditions occurred at an air velocity of 3 m/s, achieving a temperature reduction of 1.7°C, a heat transfer rate of 1.4 W, a dew point temperature effectiveness of 27.5%, and a wet-bulb temperature effectiveness of 37.3%. In contrast, the combined system with a desiccant at 3 m/s provided enhanced temperature reduction, dew point effectiveness, and wet-bulb effectiveness of 2°C, 32.4%, and 43.8%, respectively. The highest heat transfer rate, however, was recorded at 5 m/s with a value of 1.9 W. The integration of a desiccant system significantly improved the cooling performance of the Maisotsenko system in terms of temperature reduction, heat transfer rate, and cooling efficiency. At air velocities of 3 m/s, 4 m/s, and 5 m/s, the cooling performance increased by 17.6%, 78.9%, and 366.7%, respectively.
Co-Authors A.A. Ketut Agung Cahyawan W Abdou, Ousmane Salifou Abdul Gafur Abdullah Hamzah, Abdullah Abubakar, Bahrun Ahadi, Sharin Ahadin Ahadin Ahmad Saefulloh Ahmad Syuhada Ahmad Syuhada Akbari, Myrza Alamsyah, Teuku Ali, Riduan Ambarita, Artia Theresia Ambiya, Fachrizal Baehaqi Berliana, Yunida Berlianaˡ, Yunida Chatarina Umbul Wahyuni Claudia, Cindi Darma, Mospa Daska Azis Dedi Afandi Dedi Kurniawan Dena Widyawan Erdiansyah Rahmi Erwen Martianis, Erwen Martianis fadilah, Ikbal Fajrial, Jul Fakhruddin, Aan Fikar, Samsul Fikri Aulia Gadeng, Ahmad Nubli Habiburrahman Habiburrahman, Habiburrahman Hajatina, Hajatina Harahap, Faisal Sadat Hutabarat, Hendi Hardi Ibrahim Ibrahim Ilham Hudi Aim Abdulkarim Kokom Komalasari, Ilham Hudi Aim Abdulkarim Irfansyah, Haiqal Iwan Fajri Iwan Setiawan Lestari, Myrna M. Aman Yaman Maimun Maimun Malahayatie, Malahayatie Mansur Mansur Maulana, Nora Mirzal, Juni Muhammad Ghafur Wibowo, Muhammad Ghafur Muhammad Ilham Maulana MUHAMMAD MANSUR Mujiburrahman Mujiburrahman Mukhtasar, Mukhtasar Munawar Rizki Jailani Munawar, Teuku Myrza Akbari, Myrza Akbari Nadhira, Ahmad Nasution, Muhammad Syukri Na’im, Khairun Noviandi, Idham Novitasari , Eka Fitri Nur ‘Azah NURLIANA NURLIANA Octanina Sari Sijabat Oktafiani, Fina Pratama, Vio Pratomo, Donny Putra, Irwan Putra, Muhammad Deni Putri, Oktamia Anggraini Rahmadhani, Tami Fitri Rahmati Rahmati Rahmawati, Rahmawati Rajab Bahry, Rajab Rama Bagus Sanjaya, Try Ramadhan, Ali Ramadhan, Rezky Ramadhinata, Ikhwan Ramdan Pelana Ramli Ramli Razaq, Rahmatul Rianto, Arauf Rinidar Rinidar, Rinidar Rizkia, Rizkia Romadhoni Romadhoni, Romadhoni Rusli Sulaiman Rusli Yusuf Safwan Safwan, Safwan Sanusi Sanusi Sari Famularsih, Sari Sijabat, Octa Ninasari Sinaga, Ragil Alkahfi Sitepu, Karolina Siti, Sisti Umira Slamet Haryono Sofyan, Sarwo Edhy Stephan, Stephan Subianto, Anggi Sugito - Sugito Sugito Suherman, Suherman Sukamto, Ika Sumiyarsi Sulasmi Sulasmi Sundana, Lina Suzdayan, Suzdayan Syahputra, Andrian Syahputra, Beni Syahrizal Syahrizal Syamsulrizal Syamsulrizal, Syamsulrizal Syukriadi, Amanda Tamlicha, Akram Tarigan, M. Tommy Umaro Taufiq Taufiq Tegar, Tegar Teuku Reza Ferasyi Tho Chandra, Dini Tinambunan, Nur Asiah Wildan Wildan Wiwik Handayani Wulandari, Heni Yarmaliza Yeniningsih, Taat Kurnita Yunida Berliana Yunisrina Q. Yusuf Zahra, Aqila Zulkarnain Zulkarnain