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All Journal Jurnal Teknik Mesin Journal of Engineering and Technological Sciences Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Vokasi Malikussaleh Journal of Mechanical Science Technology Journal Of Sustainability Perspectives Journal of Sustainability Perspectives Prosiding Seminar Nasional Teknik UISU (SEMNASTEK) JURUTERA (Jurnal Umum Teknik Terapan) Jurnal Polimesin
Hamdani Umar
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences

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Journal : Jurnal Polimesin

 1 
Planning analysis of solar power plant utilization using the PLN network grid system interconnection on Samudra University roof building ferri Festika; Ahmad Syuhada; Hamdani Umar
Jurnal POLIMESIN Vol 21, No 4 (2023): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i4.2621

Abstract

Solar power plants can be applied in various forms of installation, either centralised or distributed, with each configuration system installation being either on-grid or off-grid. Samudra University plans to install a solar power plant for environmentally friendly applications and energy savings. The purpose of this study is to investigate the feasibility and benefits of Samudra University installing solar power generation capacity using a single-owner system on campus using SAM (System Advisor Model) applications using two axes with PV energy. The method used is to model the photovoltaic results with the System Advisor Model (SAM), which can develop new renewable energy photovoltaics. The use of solar energy as a producer of electrical energy in buildings at the ocean university by using the System Advisor Model application on the Single Owner (Grid) system in collaboration with local electricity (PLN) to continue the energy needs produced as much as 32,652,394 kWh will cost Rp. 372,864,450,000, and with an area of 105,179.9 m2 or ± 11 hectares of the total area of 49.8 hectares, it only uses ± 20% of the total area
Pemanfaatan energi terbarukan : Satu kajian pemanfaatan energi surya untuk pembangkit listrik di Universitas Samudra Munira Amudy; Adi Musfadry; Hamdani Umar
Jurnal POLIMESIN Vol 19, No 2 (2021): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v19i2.2155

Abstract

Ketersediaan energi suryalebih tinggi dari konsumsi energi global, keterjangkauannya untuk penggunaanya relatif sederhana, dan ramah lingkungan. Institusi pendidikan tinggi seringkali memiliki banyak gedung dengan atap yang besar serta hamparan lahan tak terpakai yang cocok untuk instalasi tenaga surya. Tujuan dari studi ini adalah untuk melakukan analisa kelayakan terkait pemasangan pembangkit listrik tenaga surya di institusi Pendidikan, dengan studi kasus pada kampus Universitas Samudra. Dari hasil analisis diperoleh untuk penyediaan listrik berdaya 10 MW, penggunaan panel PV lebih unggul dibandingkan menggunakan kolektor parabola. Biaya produksi listrik panel PV sebesar 6.60 ¢/kWh, sedangkan kolektor parabola membutuhkan biaya 26.42 ¢/kWh. Dan kebutuhan ruangan untuk pemasangan panel PV lebih kecil dibandingkan dengan penggunaan kolektor parabola
Penggunaan material berubah fasa sebagai penyimpan energi termal pada bangunan gedung Hamdani Umar
Jurnal POLIMESIN Vol 18, No 2 (2020): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v18i2.1832

Abstract

The energy consumption of the world building sector reaches 30% of overall energy consumption and accounts for one third of greenhouse gas emissions worldwide. Thermal energy storage is a simple and effective technique to be applied to buildings to improve building energy efficiency, and is expected to reduce the environmental impacts associated with energy use. Thermal storage by utilizing phase change material (PCM) is the most promising technique because of its high energy storage capability and small temperature changes. The combination of building materials and PCM is an efficient way to increase the thermal energy storage capacity of building components for the purpose of storing thermal energy directly in buildings. In this study the results of testing the use of beeswax as a phase change material in building concrete are given. The test results of concrete equipped with beeswax as PCM decreased the strength of the concrete but on the other hand it was able to absorb and store heat energy. The results of application analysis in buildings are able to reduce indoor cooling loads. 
Comparison Between a Thermosiphon and a Wick Heat Pipe Performance with Temperature Difference Fazri Amir; Samsul Rizal; Razali Thaib; Hamdani Umar; Nasruddin A Abdullah
Jurnal POLIMESIN Vol 21, No 1 (2023): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i1.3001

Abstract

The heat pipe (HP) is a fundamental heat transfer component frequently utilized for energy recovery in heating, ventilation, and air conditioning (HVAC). However, a heat pipe transmits heat from the hot side (evaporator) to the cold side (condenser), resulting in a temperature difference on both sides. There are numerous methods for measuring heat pipe performance. Using the temperature difference between the evaporator and condenser, the performance characteristics may be evaluated. The objective of this study is to compare the thermal performance of thermosiphon and commercial wick heat pipes (WHP) utilizing water as the working fluid and varying temperatures between the evaporator and condenser. The copper thermosiphon and commercial wick heat pipe had a diameter of 10 mm, a length of 800 mm, and a vacuum pressure of 5000 Pa. The filling ratios range between 30% and 50%, and it was evacuated at a pressure of 5000 Pa; the hot water temperatures at the evaporator were 30, 50, 70, and 90 ºC. Temperature was steadily increased every 30 minutes, and variations were observed at multiple places, including hot water, evaporator, and condenser wall. The average difference in temperature between the WHP and thermosiphon was around 0.6 degrees Celsius. The decreased temperature difference (T) indicates that the heat pipe is performing well. In addition, if the temperature difference is very great, the HP will dry up, therefore the WHP performs better than the thermosiphon.
Thermodynamic Analysis of Gas Turbine Power Plant of PT PLN Belawan Generation Implementation Unit Sofyan, Sarwo Edhy; Umar, Hamdani; Tamlicha, Akram; Ramafunna, Fitra Ilham
Jurnal Polimesin Vol 22, No 4 (2024): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i4.5365

Abstract

The low quality of the thermodynamic process in a gas turbine power plant results in the waste of potential energy and impacts the power plant's efficiency. Analysing the thermodynamic performance of a gas turbine power plant is crucial to evaluating its efficiency in converting fuel energy into useful work. This analysis helps identify opportunities for improvement and optimise the plant's design for better performance by examining the components (e.g., the compressor, combustion chamber, and turbine). This study aims to evaluate the performance of a Gas Turbine Power Plant (GTPP) through thermodynamic analysis considering the variation of cycle loads. The study was conducted based on the field survey data obtained from the GTPP PT PLN Belawan generation implementation unit. The collected operation data was used to perform a thermodynamic analysis by applying the principles of conservation of mass and energy, along with the laws of thermodynamics. The study examined five cycle load variations: 31.7 MW, 34.3 MW, 48.1 MW, 60.7 MW, and 71.7 MW. Results showed a consistent reduction in the gas turbine heat rate as the load increased, with a significant 53.3% drop in heat rate from 34.3 MW to 71.7 MW. Higher cycle loads also correlated with increased turbine and compressor work, with the turbine producing 55.8% more work than the compressor at 71.7 MW. The turbine's thermal efficiency ranged from 40% to 44%, with potential for a 5% efficiency increase.
Co-Authors - Alchalil - Azhari - Mursalin - Zulkifli A. Abdullah, Nasruddin Abdullah, Nazaruddin Abrar Muslim Abu Bakar Adi Musfadry Adi Saputra Ismy Ahmad Syuhada Ahmad Syuhada Ahmad Syuhada Amalia Harmin Anan Niazi Usman Asri Gani Azwinur Azwinur Darmawan Darmawan Doni Risthiawan Erliadi Erliadi Erwin Ash'ari Fadliani Fadliani Fazri Amir ferri Festika Gani, Asri Hani, M. Reza Husni Husin Husni Husin Ikhwan Ikhwan Iqbal Iqbal Iskandar Hasanuddin Jalaluddin Jalaluddin Khairil Khairil Khairil, Khairil Khiaril Khairil Lely Mastura M Iqbal A.P M. Reza Hani Mahidin Mahidin Mahidin Mahidin Mahidin, Mahidin Mahyuddin Maidi Saputra Maimun Syukri Meri Andriani Muhammad Amin Muhammad Amin Muhammad Faisal Muhammad Syukur Muhammad Thaib Hasan Muhammad Zulfri Muhtadin Munira Amudy Muslim, Abrar Nazaruddin Abdul Rachman Puput Heri Syahputra Putra, Rachmad Almi Ramafunna, Fitra Ilham Razali Thaib Razali Thaib Razali Thaib Razali Thaib Rizal, Samsul Safrizal Rahman Salamul Fajar Samsul Rizal Samsul Rizal Sofyan, Sarwo Edhy Sukuria Mungkur, Rahmat Syahri, Alfi Syukur, Muhammad Tamlicha, Akram Taufiq Taufiq Teuku Azuar Rizal Teuku Juliadi Teuku Zubir Ully Muzakir Widodo, Syamsul Bahri Yossi Oktarini