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All Journal Jurnal Teknik Mesin Jurnal Teknik ITS IPTEK The Journal for Technology and Science Rekayasa Mesin JMES The International Journal of Mechanical Engineering and Sciences Sewagati
Triyogi Yuwono
Jurusan Teknik Mesin, Fakultas Teknologi Industri, Institut Teknologi Sepuluh Nopember Surabaya Kampus ITS, Keputih, Sukolilo – Surabaya 60111
Aerospace Engineering Arts Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Journal : IPTEK The Journal for Technology and Science

 1 
Effect of Increasing Sea Water Temperature on Performance of Steam Turbine of Muara Tawar Power Plant Nastopo Darmawan; Triyogi Yuwono
IPTEK The Journal for Technology and Science Vol 30, No 2 (2019)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (514.068 KB) | DOI: 10.12962/j20882033.v30i2.4994

Abstract

Muara Tawar Power Plant is located on the coast of Bekasi, West Java, Indonesia. Along with the economic development, there are plans to do reclamation the sea around Muara Tawar Power Plant and build around it as a port and industrial estate. This could potentially lead to an increase in sea water temperatures. This paper aims to determine the effect of increasing sea water temperature on the performance of steam turbine 1.4 in Muara Tawar Power Plant, which uses sea water as a condenser cooling medium. The intended performance is the output power of the steam turbine, the condenser pressure and the system efficiency. Steam turbine 1.4 has 225 MW installed output power, supplied from 3 HRSG (Heat Recovery Steam Generator).Analysis of the effect of sea water temperature rise on steam turbine performance is carried out by using the cycle-tempo software. The main equipment of steam turbine is modeled in cycle-tempo, then model is validated by comparing with design data. Varies sea water temperature then is inputted on model in order to obtain the output power of steam turbine, condenser pressure and system efficiency. The results show that for every 1˚C increase in condenser cooling water temperature extracted from seawater near the plant, the output power of the plant decreased by about 0.171%, the condenser pressure increased by about 5.146%, and the system efficiency decreased by about 0.168%.
Performance Study of Installed an I-65o Type Cylinder at The Upstream of Returning Blade of Savonius Wind Turbine, Comparison With Conventional Savonius Wind Turbine Gunawan Sakti; Triyogi Yuwono
IPTEK The Journal for Technology and Science Vol 30, No 2 (2019)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (552.147 KB) | DOI: 10.12962/j20882033.v30i2.4991

Abstract

Savonius wind turbine has many advantages over others in that its constructions are simpler and cheaper; it is independent of the wind direction and has a good starting torque at lower wind speeds. However, this type of wind turbine has the lowest performance compared to others types of wind turbine. That is why various studies have been done to improve the performance of the turbine Savonius. This paper is proposed in order to increasing the performance of Savonius wind turbine experimentally by installing an I-65o type bluff body at the upstream of returning blade of the turbine. The experiments are carried out for free stream velocity (U) of 7 m/s corresponds to Reynolds number of about 127.000 (based on the characteristic length of d = 2D-e and free stream velocity (U) from fan used. The center to center distance between the I-65o type cylinder and the returning blade turbine relative to turbine blade diameter S/D specified for 1.4. The diameter of I-65o type cylinder relative to turbine blade diameter is 0.5. The result of experimental show that in general compared to conventional Savonius wind turbines, the placement of I-65o type cylinder in front of the returning blade of the Savonius wind turbine is effective for improving turbine performance. The results of this experiment show that for Re = 127,000, the power coefficient of the turbine with the I-65o type cylinder is greater than when the turbine has no I-65o type cylinder or conventional Savonius wind turbine. Where in this condition, the maximum coefficient of power the Savonius turbine (CP) with I-65o type cylinder can actually increase to 25.66 % compared to the turbine without the I-65o type cylinder; this is obtained for Tip Speed Ratio of 0.76.
Co-Authors A. Grummy Wailanduw Afiyah Shuhufam Ahmad Rifqi Romadhani Ainun Nadhifah Andika Rizki Fadhila Andreas Augustinus Manurung Anisah Nurul Izzah Aryawan, Wasis Dwi Audha Fitrah Aulina Bagas Ramadhan Ananto Bambang Pramujati Bambang Pramujati Bambang Sudarmanta Basuki Widodo Chairul Imron, Chairul Damar AKbar Darusalam Dionisius Jeremia Djatmiko Ichsani Elza Lisdarina Fahrizal Aji Nurcahya Faikar Hadian Ferdy Rezka Refanio Fernaldo Aditya Kurniawan Festy Merbasari Mahardina Gunawan Sakti Hakam, Amirul Herman Sasongko Herman Sasongko Hilmi Rahmat Fauzi Indra Sidharta Is Bunyamin Ishak Al Mausili Tahir Jeremia Dionisius Karunia Sari Gandhini Lawrence Budhiarto Michael Lisdarina Elza Merbasari Mahardina Festy Michael Lawrence Budihartono Miftihatul Jannah Mohammad Khoirul Effendi Mohammad Khoirul Effendi Muhammad Naufal Nabila Arif Vega Naila Hanin Laksita Nastopo Darmawan Naufallia Fitri Sholikhah Nur Ikhwan Nur Ikhwan Nur Yuniarto P. Indiyono Paramesti Suksmatatya Rachmat Dhany Garijani Ramadhan Ananto Bagas Retno Dewi Pamungkas Sampurno Sampurno Sampurno Sampurno Shabrina, Dhia Fairuz Shuhufam Afiyah Suhardjono Suhardjono Suhardjono Sutardi Sutardi Wawan Aries Widodo Yoga Erry Priandika Yusuf Kaelani Yusuf Kaelani