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All Journal Jurnal Teknosains SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Prosiding Semnastek Majalah Ilmiah MOMENTUM International Conference on Coastal and Delta Areas R.E.M (Rekyasa Energi Manufaktur) Jurnal Rekayasa Teknologi Jurnal SOLMA Prosiding Seminar Nasional Teknoka Dinamisia: Jurnal Pengabdian Kepada Masyarakat JURNAL KAJIAN TEKNIK ELEKTRO Bantenese Jurnal Pengabdian Masyarakat SULUH: Jurnal Abdimas Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Motor Bakar : Jurnal Teknik Mesin Jurnal Pengabdian kepada Masyarakat Nusantara Jurnal Pengabdian Masyarakat Asia Jurnal Mesin Nusantara Sawala : Jurnal pengabdian Masyarakat Pembangunan Sosial, Desa dan Masyarakat DEVICE Jurnal Polimesin Metalik: Jurnal Manufaktur, Energi, Material Teknik
Oktarina Heriyani
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Journal : Jurnal Polimesin

 1 
Enhancing seawater desalination performance using a vortex generator in a modified window air conditioner Nurkholid, Nurkholid; Mugisidi, Dan; Widodo, Widodo; Heriyani, Oktarina; Sulistiono, Ibnu
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.v23i1.6110

Abstract

The growing demand for air conditioning systems has driven research into alternative applications, such as seawater desalination. This study evaluates the performance of a modified window air conditioner (WAC) integrated with a vortex generator for desalination. Experiments were conducted using R410A refrigerant under four conditions: closed container (CC), without vortex (WV), connected vortex (CV), and separated vortex (SV). Seawater was heated via the condenser to 55–60°C, controlled by a thermostat, and data was collected every five minutes over eight hours. The thermodynamic properties of R410A were analyzed using Refprop software to determine refrigeration effect (RE), compression work (CW), and coefficient of performance (COP). Results indicate that the SV configuration achieved the highest evaporation rate (5.01 kg) but led to a lower COP (3.91) due to increased condenser temperature and compressor workload. Conversely, CC yielded the highest COP (5.08) by stabilizing the evaporator air temperature and reducing compressor effort. These findings suggest that vortex generators enhance evaporation rates but reduce system efficiency. Further research is needed to optimize vortex generator configurations to improve desalination efficiency while minimizing COP reduction.
Impact of angle cap and water-filled blade modification on the output of overshot waterwheels Afandi, Rizki Afif; Mugisidi, Dan; Parwatmoko, Giri; Heriyani, Oktarina
Jurnal Polimesin Vol 23, No 2 (2025): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i2.6543

Abstract

The utilization of water resources as renewable energy through waterwheels presents an environmentally friendly alternative, however, its efficiency requires improvement through technological modification. This research investigates two design modifications: a 45° Angle Cap (AC) and a Water-Filled Angle Cap (WFAC), in comparison with a waterwheel without a Cap (WC). Experiments were conducted at discharges from 1 to 10 m³/h with a constant torque load of 0.05 N-m. The highest efficiency of 57.08% was achieved in the AC 45° configuration at 1 m³/h, generating 1.09 watts of power, while the WFAC 45° yielded the highest power output of 2.88 watts at 10 m³/h with an efficiency of 14.50%. Although increasing discharge generally led to higher power input, it was accompanied by a decrease in efficiency across all configurations. Among all three variations, WFAC 45° demonstrated superior performance at higher discharges, indicating its potential for enhancing the power and efficiency of overshot waterwheels. 
Effect of water pressure and temperature on the perform-ance of a desalination reactor Dwibowo, Dany Alvian; Mugisidi, Dan; Heriyani, Oktarina; Alamsyach, Rizky; Amin, Syahrul
Jurnal Polimesin Vol 23, No 6 (2025): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i6.7867

Abstract

The crisis of clean water availability has become increasingly critical due to rapid population growth and environmental degradation. One strategic approach to address this challenge is to implement seawater desalination, which provides an abundant, sustainable water source. However, conventional methods remain limited in terms of energy efficiency. This study aims to analyze the effect of pressure and temperature variations on the performance of a large-capacity desalination reactor with an 8000-liter tank. Two configurations were experimentally tested: (1) an air-circulation system that relies on static heating assisted by an axial fan to enhance convection, and (2) a sealed system operating under low-pressure conditions to reduce the boiling point of water, equipped with active hot-water circulation. Data collection was carried out over 27 hours of operation, with the observed parameters including water temperature, partial pressure, relative humidity, and evaporation volume. The experimental results showed that the sealed configuration delivered superior performance, with an evaporation rate 16.64% higher than that of the air-circulation variant. The volume of water successfully evaporated in the sealed system reached 20.12 liters, whereas in the air-circulation system it was only 17.25 liters. This increase in efficiency is attributed to the pressure-reduction effect, which enhances the vapor pressure difference while facilitating uniform heat distribution through active water circulation. This study emphasizes that controlling pressure and temperature is key to improving the effectiveness of the desalination process, thereby supporting the Development of more energy-efficient and sustainable clean water supply technologies.
Co-Authors Abdul Rahman Abdul Rahman Soleh Pohan Adittia Fajar Afandi, Rizki Afif Agus Fikri Agus Fikri Ahmad Ramdhani, Ahmad Aji, Ikbal Prasetiyo Akhiruddin Maddu Akhmad Rizal Dzikrillah Alamsyach, Rizky Aldi fadillah Amin, Syahrul Ashar, Ilham Ariawan Atiqah Mutia Avorizano, Arry Cahyani, Regita Septia Choirul Prayoga Dan Mugisidi Deka Rama Ligustian Delvis Agusman Dimas Ramadhan Putra Dimas Ramadhan Putra Dwi ASTUTI Dwibowo, Dany Alvian Dzikrillah, Achmad Rizal Eddy Ramdan Eef syaifuloh Emilia Roza Enrico Chiesa Virgianto Fadhlurrahman Zaki Fahmi, Muhammad Idrokul Faldy Irwiensyah Farhan Putra Arya, M. Iqbal Faturahman, Hamdi Fauzi, Herman Fikri, Agus Firman Noor Hasan Hamdi Faturahman Hamdi Faturohman Hamzah, Arif Hangga Putra Prabawa Harry Ramza Hendi Saryanto Hilmi, Irfan Ikbal Prasetiyo Aji Jayawarsa, A.A. Ketut Jhav Sund Oktoricoento Khoirunnisa, Martha Luhung, Rizal Andi M Mujirudin M. Mujirudin M.Kom, Sugema Mohammad Mujirudin Mohammad Yusuf D Muhammad Ramdani Muhammad Rayhan Muhammad Zahir Bahasyim Mujirudin, Mohammad N, Kevin Sigit Dwi Nazaruddin Sinaga Nofendri, Yos Nugroho, Agung Nurfadillah, Zaka Nurkholid, Nurkholid Oktavian, Akbar Oktoricoento, Jhav Sund Pancatatva Hesti Gunawan Pangestu, Anugrah Widhi Parwatmoko, Giri Putra Arya, Muhammad Iqbal Farhan Ramadan, Hamdan Ramza, Harry Regita Septia Cahyani Reza Ferizal Akbar Rifky, Rifky Riyan Ariyansah Rizal Andi Luhung Rosalina Rozaki, Syahrul Maulana Safi'i, Muhamad Sahrudin Sahrudin Sahrudin Sahrudin Sahrudin, Sahrudin Saputra, Muhamad Juli Sayuti, Adi Tegar Sistani, Muhammad Ghiffar Soleh Pohan, Abdul Rahman Sugema Sugema M.Kom Suheri Kertosenjoyo2, Suheri Sulistiono, Ibnu Supardi Atisina Susanto Susanto Susanto Susanto Tabah Priangkoso Tegar Imaniar Kusnanto Widodo Widodo Wijaya, Victor Indra Wirangga, Ristanto Yafid Effendi Yoga Aditya Yulikastomo yusuf, Ahmad Maulana Zaka Nurfadilah