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All Journal Jurnal Teknik ITS Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal technoscientia JURNAL PENGABDIAN KEPADA MASYARAKAT EMITTER International Journal of Engineering Technology JURNAL SIMETRIK JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN JRST (Jurnal Riset Sains dan Teknologi) Jurnal Technopreneur (JTech) Prosiding Seminar Nasional Sains dan Teknologi Terapan Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Jurnal Elemen Jurnal Teknik Mesin Jurnal Engine: Energi, Manufaktur, dan Material JURNAL TEKNOLOGI TECHNOSCIENTIA Prosiding SNAST Eksergi: Jurnal Teknik Energi Journal of Mechanical Engineering, Science, and Innovation International Conference on Maritime Technology and Its Application
Arrad Ghani Safitra
Politeknik Elektronika Negeri Surabaya
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Journal : EMITTER International Journal of Engineering Technology

 1 
Improve of Water Flow Acceleration in Darrieus Turbine Using Diffuser NACA 11414 2,5R Nugroho, Setyo; Safitra, Arrad Ghani; Aribowo, Teguh Hady; Julianto, Mochammad Arief
EMITTER International Journal of Engineering Technology Vol 6, No 1 (2018)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24003/emitter.v6i1.236

Abstract

Indonesia has potential hydro energy around 70000 MW which has been used around 6% (3529 MW). One of the development constraint is the stream velocity in Indonesian rivers is relative low. It causes bigger turbine dimension needed to achieve power which is desired.  An alternative is to utilize adiffuser, which is a device that could accelerate the fluid flow in order to give more energy to the turbine. Based on contiunity equation, diffuser can increase velocity by ratio of cross-section area. It can be  used to achieve expected power as long as it is not too much reduce the pressure. This research is conducted in 0.566 m/s of water velocity with Darrieus turbine with hydrofoil NACA 0018, height 0.74 m, radius 0.17 m, chord 0.11 m and 3 number of blades. The performance (Cp) was determined by numerical and experimental without and with diffuser NACA 11414 2.5R for variation of angle 8o, 16o, and 20o. Both of those result showed that the best performance of NACA 11414 2,5R is on angle 16o which numerically has stream velocity 0,91 m/s of water and 7 times of Cp, while experimentally has 0,891 m/s of water velocity and 3,16 times of Cp. This diffuser could improve the power generated by the turbine and increase the turbine efficiency.
Improve of Water Flow Acceleration in Darrieus Turbine Using Diffuser NACA 11414 2,5R Setyo Nugroho; Arrad Ghani Safitra; Teguh Hady Aribowo; Mochammad Arief Julianto
EMITTER International Journal of Engineering Technology Vol 6 No 1 (2018)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1354.908 KB) | DOI: 10.24003/emitter.v6i1.236

Abstract

Indonesia has potential hydro energy around 70000 MW which has been used around 6% (3529 MW). One of the development constraint is the stream velocity in Indonesian rivers is relative low. It causes bigger turbine dimension needed to achieve power which is desired.  An alternative is to utilize adiffuser, which is a device that could accelerate the fluid flow in order to give more energy to the turbine. Based on contiunity equation, diffuser can increase velocity by ratio of cross-section area. It can be  used to achieve expected power as long as it is not too much reduce the pressure. This research is conducted in 0.566 m/s of water velocity with Darrieus turbine with hydrofoil NACA 0018, height 0.74 m, radius 0.17 m, chord 0.11 m and 3 number of blades. The performance (Cp) was determined by numerical and experimental without and with diffuser NACA 11414 2.5R for variation of angle 8o, 16o, and 20o. Both of those result showed that the best performance of NACA 11414 2,5R is on angle 16o which numerically has stream velocity 0,91 m/s of water and 7 times of Cp, while experimentally has 0,891 m/s of water velocity and 3,16 times of Cp. This diffuser could improve the power generated by the turbine and increase the turbine efficiency.
Thermal Analysis of Solar Air Heater with Ventilator Turbine and Fins Arrad Ghani Safitra; Lohdy Diana; Denny Muhammad Agil; Julfan Hafiz Fareza; Nu Rhahida Arini
EMITTER International Journal of Engineering Technology Vol 8 No 2 (2020)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24003/emitter.v8i2.584

Abstract

Solar air heater (SAH) is a renewable energy application for the drying process. SAH has a challenge to produce high performance under uncertain weather. The performance of SAH can be enhanced by providing the absorber plate by adding the fins. This study aims to evaluate the thermal performance of SAH with rectangular fins SAH at low air velocity. This study compares the performance of SAH without fins and SAH with rectangular fins. Two variations of a tilt angle of SAH are 0° and 30° which are observed in this study. The SAH uses a ventilator turbine to suck air into the collector box. The air velocity is 0.01 m/s. The method is experimental. The SAH is tested under real condition from 9 a.m. to 4 p.m. The measurement tools consist of a pyranometer, an anemometer, a temperature sensor in the inlet section, 3 sensors in the absorber plate, a sensor in the outlet section, 6 temperature sensors in the drying cabinet. The result showed the thermal efficiency of SAH with rectangular fins is 29.67 % higher than SAH without fins at 0˚ tilt of angle at noon. The thermal efficiency of SAH with rectangular fins is 25.26 % higher than that of without fins at 30˚ tilt of angle at noon.
Co-Authors Elby , Alvin Christian Abdul Kadir Djaelani Achmad Bahrul Ulum Achmad Setiyawan Agam Sulistyo Aghist Fitrony, Muhammad Agung Dwi Cahyo Ahmad Taufiqurrahman Azhar Aji, Pandu Gautama Amalia, Rif?ah Amalia, Rif?ah Amelia, Firyal Nisa Apriani Rosnauli S Aribowo, Teguh Hady Arifin P. P., Moch. Denis Arini, Nu Rhahida Ary Bachtiar Khrisna Putra Ary Bachtiar Khrisna Putra Denny Muhammad Agil Dewi, Naili Husna Diana, Lohdy Eky Novianarenti Eky Novianarenti Erik Tridianto Erik Tridianto Erlinda Ningsih, Erlinda Fauziyyah, Inas Nabilah Fifi Hesty Sholihah G. P., Hendrik Elvian Haidar Fakr, Muhammad Hendrik Elvian G. P. Heroe Poernomo Heroe Poernomo Hidayatullah, Muhammad Muslih Ikhsan Baihaqi Imaniah Sriwijayasih Inas Nabilah F Ismah, Paradya Nabilah Joke Pratilastiarso Julfan Hafiz Fareza Julianto, Mochammad Arief Kurnia Devi Ariswanda Lohdy Diana Lohdy Diana Lovyta Putri Adianti Moch. Denis Arifin P. P. Mochammad Arief Julianto Mochammad Denis Arifin Pratama Putra Mohammad Basuki Rahmat Muhammad Nabiel Ariansyah Nabila Haninda Az Zahra Nabila Haninda Azzahra Naili Husna Dewi Nu Rhahida Arini Nur Hidayat Pratilastiarso, Joke Prima Dewi Permatasari Priyambodo Nur Ardi Nugroho Puspitasari, Susi Puspitasari, Susi Putra, Firdaus Fhudoli Qurniawan Zen Al Faris Radina Anggun Nurisma Rif’atus Sholihah Rijalulakbar Dewantoro Rini Indarti Rio Adi Kristian Rizal Mahmud Saputra, Firman Yunan Setyo Nugroho Setyo Nugroho Setyo Nugroho Syahputra, Ar Rayyan Ikhsan Syariful Hadi, Muhammad Teguh Hady Aribowo Teguh Hady Ariwibowo