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All Journal Rotasi Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Simetris Dinamika : Jurnal Teknik Mesin JMPM (Jurnal Material dan Proses Manufaktur) Jurnal Tekno Insentif Jurnal Teknologi Terapan Journal of Renewable Energy and Mechanics Journal of Community Development Jurnal Vokasi Mekanika Sinergi Polmed : Jurnal Ilmiah Teknik Mesin Journal of Artificial Intelligence and Digital Business Journal of Software Engineering and Information System (SEIS) AMMA : Jurnal Pengabdian Masyarakat Jurnal Foundry Jurnal Teknik Mesin Infact: Jurnal Sains dan Komputer TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Journal of Sciencce Technology and Visual Culture Jurnal Polimesin Jurnal Pendidikan Teknik Mesin Journal of Industrial and Mechanical Engineering
Muhammad Syaukani
Institut Teknologi Sumatera
Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences Other

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Journal : Jurnal Polimesin

 1 
Development of CFD simulation model of earth air heat exchanger for space cooling of a 36 M2 house in tropical climate Banda Aceh, Indonesia Sarwo Edhy Sofyan; Khairil Khairil; Zhafran Maulana; Akram Tamlicha; Jalaluddin Jalaluddin; M. Syaukani
Jurnal POLIMESIN Vol 21, No 2 (2023): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i2.3692

Abstract

The global warming makes the ambient temperature hotter and greater efforts are made to reach a comfortable temperature. The continuous use of air conditioners that consume electricity is also unsustainable for the surrounding environment. Several studies on thermal comfort have been conducted by various researchers. Earth-air heat exchangers (EAHE) with air-working fluids can be used as a passive contribution to reduce building energy requirements for heating or cooling purposes. It should be noted that there is very little information in the literature on the development of a CFD (Computational Fluid Dynamic) simulation model of an EAHE for space cooling of a 36 m2 house in a tropical climate, such as Banda Aceh, Indonesia. Therefore, this study aims to examine the performance of EAHE with several variations in design parameters, such as pipe length, pipe diameter, number of pipe bends, and the type of soil where the EAHE is installed, as well as the thermal regime of a 36 m2 house either with or without the use of EAHE. The simulation in this study was conducted with CFD ANSYS Fluent software. The inlet air temperature of EAHE was set to be the same as the ambient air temperature, namely 31.4oC. The simulation results reveal that for variations in pipe length, the highest drop in outlet air temperature was yielded by the 47 m pipe length, which is 26.8°C. In which an increase in pipe length causes a decrease in air outlet temperature. The variation in pipe diameter does not significantly affect the outlet air temperature. Where the average air temperature drop at the EAHE exit is 0.046oC. The variation in number of turns shows that the drop in outlet air temperature is identical, namely 28.2°C, despite the fact that their pressure drop values are different. In addition, it was found that the performance of EAHE buried under different types of soil is distinct. The highest drop in outlet air temperature was generated when the EAHE was buried in silty soil, namely 26.1°C. A case study on a 36 m2 house shows that the utilization an underground heat exchanger can reduce the house’s indoor temperature by 2°C, with an average house temperature of 30.4°C compared to that with a natural ventilation.
Twist and chord optimization using the linearization method on the taper blade of a micro-horizontal axis wind turbineTwist and chord optimization using the linearization method on the taper blade of a micro-horizontal axis wind turbine Syaukani, Muhammad; Aryadi, Anugrah Wahyu; Arirohman, Ilham Dwi; Sofyan, Sarwo Edhy; Bahar, Aditiya Harjon; Sabar, Sabar
Jurnal Polimesin Vol 22, No 5 (2024): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i5.5540

Abstract

The research aims to optimize the geometry of taper blade profiles for the Horizontal Axis Wind Turbine (HAWT) to improve aerodynamic performance and minimize fabrication complexity. The study used blade linearization as an optimization method for identifying a desirable twist (β) and chord (Cr). This approach enhances accuracy and boosts computational efficiency. It simplifies the optimization process by reducing complexity. In contrast, traditional nonlinear methods are slower and more resource-intensive due to complex aerodynamic interactions. The best β and Cr distributions were found by linearization with elements 1 and 10 of the blade length and positions 5%, 15%, 25%, 35%, 45%, 55%, 65%, 75%, 85, and 95% of the blade elements. The linearization results were used to determine the optimum performance of the HAWT design using simulation. The optimal blades for HAWT were fabricated and their performance evaluated under real wind conditions. The linearization of the 45% twist and chord of elements 1 and 10 provided the best blade shape. Optimized twist and chord yielded HAWT performance with the Cp of 45% to 47% at rotational speeds of 200–900 rpm and wind speeds of 2–10 m/s. Twist and chord optimization increased the Cp from 39.71% to 46.43% with a rotational speed of 550 rpm at a wind speed of 6 m/s, as well as the maximum mechanical power from 424.28 watts to 500.35 watts at a wind speed of 10 m/s. The result from real wind conditions showed that manufactured HWAT produced an average electrical power of 294.19 watts at a rotational speed of 590.66 rpm. These results demonstrate that the optimized design approach presents a close match and is still reasonable in comparison to practical conditions.
Co-Authors Abdi Hanra Sebayang Achmad Gus Fahmi Aditia Prahmana, Rico Akasah, Ahmad Akram Tamlicha Alfian, Devia G. C Amalya, Wulan Ammar, Naufal Andi Kolala, Putra Anugrah, Galang Arirohman, Ilham Dwi Aryadi, Anugrah Wahyu Atmaja, Muhammad Setya Bahar, Aditiya Harjon Chaniago, Noverto Zhorif Devia Gahana Cindi Alfian Devy Setiorini Sa’adiyah Dicky J. Silitonga Duwi Hariyanto Eko Pujiyulianto Fajar Paundra Fajar Paundra Ferdaus, Ferman Fikri, Muhammad Luqman Saiful Fitrah Qalbina Gahana Cindi Alfian, Devia Gita Johannes Saragih Guguk, Kardo Raja Handoyo Handoyo Harmiansyah Hendrarsakti, Joneed Hidayatullah, M Taufik Irza Sukmana, Irza Jalaluddin Jalaluddin Kardo Rajagukguk, Kardo Kenedi, Akmal Afif Khairil Khairil Khoiri, Rizky Kisna Pertiwi Kolala, Putra Andi Kurniawan, Medy Lathifa Putri A Lathifa Putri Afisna Mahesa, Iqbal Marone J Tambunan Mufidah, Zunanik Muhyi, Abdul Naimah, Khoirun Nanda Syanur, Farid Nicholas Binsar Pandapotan Nurullah, Fajar Perdana Paundra, Fajar Perdana Nurullah, Fajar Prabowo Prabowo Prahmana, Rico Aditia Pujiyulianto, Eko Pujiyuliyanto, Eko Putra, Aditya Septian Putty Yunesti Rahmat Susanto Riayatsyah, Teuku Meurah Indra Rojikin, Setiyo Rojikin, Setyo Ruly Davisca Pratama Rustam Efendi Sabar Sabar Sabar Sadono, Fajar Sidik Saputra, Aprizal Sarwo Edhy Sofyan Sastra Kusuma Wijaya Siregar, Ilham Ramadhan Sofyan, Sarwo Edhy Styawati Suharno Suharno Syah, Muhammad Aksel SYANUR, FARID NANDA Taurista Perdana Syawitri, Taurista Perdana Verdia, V Daniel Wibawa, Gilang Putra Wibowo, Gilang Handi Wijaya, Muhammad Hario Yopi Rusdian Santoso Yudi Kurniawan Yunasdi, Hamda Zhafran Maulana