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All Journal JBIO: jurnal biosains (the journal of biosciences) Jurnal Sains dan Seni ITS Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Jurnal Teknologi Journal of Economics, Business, & Accountancy Ventura Jurnal Ilmiah Mahasiswa FEB AGRIVITA, Journal of Agricultural Science Jurnal Varidika Proceeding SENDI_U Journal of Tropical Biodiversity and Biotechnology EMITTER International Journal of Engineering Technology Jurnal Bioteknologi & Biosains Indonesia (JBBI) Jurnal Biologi Tropis Pendas : Jurnah Ilmiah Pendidikan Dasar JMM (Jurnal Masyarakat Mandiri) Biosaintifika: Journal of Biology & Biology Education CARADDE: Jurnal Pengabdian Kepada Masyarakat Bioedukasi: Jurnal Pendidikan Biologi Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Wave: Jurnal Ilmiah Teknologi Maritim Atrium : Jurnal Arsitektur INDONESIAN JOURNAL OF MEDICAL LABORATORY SCIENCE AND TECHNOLOGY Best Journal (Biology Education, Sains and Technology) INTEGRITAS : Jurnal Pengabdian Jurnal Abdi: Media Pengabdian Kepada Masyarakat GOVERNANCE: Jurnal Ilmiah Kajian Politik Lokal dan Pembangunan Jurnal Litbang Edusaintech Proceeding Biology Education Conference Journal of Marine-Earth Science and Technology Bussman Journal : Indonesian Journal of Business and Management Indonesian Capital Market Review Sewagati Jurnal Sarjana Ilmu Pendidikan Proceeding Mulawarman International Conference on Tropical Public Health
Setyo Nugroho
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

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Journal : EMITTER International Journal of Engineering Technology

 1 
CFD Analysis of Nozzle Exit Position Effect in Ejector Gas Removal System in Geothermal Power Plant Nugroho, Setyo; Citrahardhani, Ciptananda
EMITTER International Journal of Engineering Technology Vol 3, No 1 (2015)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.329 KB)

Abstract

The single stage ejector is used to extract the Non CondensableGas (NCG) in the condenser using the working principle of the Venturi tube. Three dimensional computational simulation of the ejector according to the operating conditions was conducted to determine the flow in the ejector. Motive steam entering through the convergent – divergent nozzle with increasing flow velocity so that the low pressure exist around the nozzle. Comparison is done also in a two dimensional simulation to know the differences occurring phenomena and flow inside ejector. Different simulation results obtained between two dimensional and three dimensional simulation. Reverse flow which occurs in the mixing chamber made the static pressure in the area has increased dramatically. Then the variation performed on Exit Nozzle Position (NXP) to determine the changes of the flow of the NCG and the vacuum level of the ejector.Keywords: Ejector, NCG, CFD, Compressible flow.
CFD Analysis of Nozzle Exit Position Effect in Ejector Gas Removal System in Geothermal Power Plant Nugroho, Setyo; Citrahardhani, Ciptananda
EMITTER International Journal of Engineering Technology Vol 3, No 1 (2015)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.329 KB) | DOI: 10.24003/emitter.v3i1.35

Abstract

The single stage ejector is used to extract the Non CondensableGas (NCG) in the condenser using the working principle of the Venturi tube. Three dimensional computational simulation of the ejector according to the operating conditions was conducted to determine the flow in the ejector. Motive steam entering through the convergent – divergent nozzle with increasing flow velocity so that the low pressure exist around the nozzle. Comparison is done also in a two dimensional simulation to know the differences occurring phenomena and flow inside ejector. Different simulation results obtained between two dimensional and three dimensional simulation. Reverse flow which occurs in the mixing chamber made the static pressure in the area has increased dramatically. Then the variation performed on Exit Nozzle Position (NXP) to determine the changes of the flow of the NCG and the vacuum level of the ejector.Keywords: Ejector, NCG, CFD, Compressible flow.
Performance Analysis of The Effect on Insertion Guide Vanes For Rectangular Elbow 900 Cross Section Nugroho, Setyo; Hidayatulloh, Achmad Arifudin
EMITTER International Journal of Engineering Technology Vol 4, No 2 (2016)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1875.344 KB) | DOI: 10.24003/emitter.v4i2.157

Abstract

The use of elbow or curved pipe in the installation of piping has a loss of pressure (pressure drop) which could lead the power of pump that drive the fluid and decrease the energy efficiency of the system. The pressure drop is caused by the curved shape of the elbow that cause pressure on the outer wall (outter) larger and blocking off the pace of the fluid, and flow pressure losses caused by friction, flow separation and secondary flow. A method that can be used to reduce flow separation and pressure loss in the elbow is by the insertion guide vane. The test model in the form of rectangular elbow 900  with a radius ratio (rc/Dh) = 1.1249 without using a guide vane and number of guide vane insertion one until three guide vanes. With Reynolds number ReDh ≈ 8.6 × 104. The velocity inlet is uniform, the measured variable is static pressure. Static pressure was measured using an inclined manometer. With variation the number of guide vane gives a more effect on the value of pressure drop, the largest pressure drop until 123.35% compared to that without guide vane. The velocity distribution profile on the outlet side becomes more uniform. The magnitude of this pressure drop occurs as a result of the increased flow friction and its secondary flow become smaller.
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.
Co-Authors A.A.B. Dinariyana AAB Dinariyana Achmad Bahrul l Ulum, Achmad Bahrul Adrianto, Ratno Adyan Donastin Afifah, Kufah Nur Agus Kusmana Aisyah Virgina Putri Ali Mustafa Sidauruk Ali, Syarif Alisa Qudrotun Munawaroh Alvian Viki Dwi Wijayanto Angelina, Grace Anggara, Dimas Yos Angger Sukma Mahendra Anto Budiharjo Aribowo, Teguh Hady Arida Wahyu Barselia Arifin, Auliyya Intan Mellaniy Arjo, Tri Ramadani Arrad Ghani Safitra Audina, Shafira Zulfa Awwalin, Rodlitul Ayu Sulasari Bagas Dewantara Pratama Putra Bambang Soemardiono Buana Susilo Budi Murtiyasa CATUR RIANI Ciptananda Citrahardhani, Ciptananda DALIMARTHA, LENGGA NURULLAH Dewanto, Raden Sanggar Dewi Septanti Dini Ermavitalini Djauhar Manfaat Dwi Nastiti Danarsari Dyah Wulandari Edwin Setiawan Eko Chandra Wiguna Endang Fauziati Erwin Sudarma Evelina, Tri Yulistyawati Fajar Gumelar Fardilla Rizqiyah Fauzi Ahmad Muda Fellycita Kartika Afriliona Fida Alya Putri Rimansa Filemon, F Firmansyah Achjab, Firmansyah Fitriani, Aprilia Dyah Hafiedz, Adzan Fajar Osceola Hamri, Ahmad Ahsyar Haqq, Annida Harsono Hermanto, Michael Einstein Herni Sudarwati Hidayat, Muhammad Taufiq Hidayatulloh, Achmad Arifudin Hutapea, Reza Jonathan Ida Ekawati Ima Defiana Inayatul Masruroh Isdiantoni Isdiantoni Isdiantoni Isdiantoni Isdiantoni Isdiantoni Isdiantoni Isdiantoni Izzatul Islami Julianto, Mochammad Arief Krisdianto, Johanes Krispinus Duma Kristanti Indah Purwani Lengga Nurullah Dalimartha LUTHFIYYAH, ZAYYAN Maharani Pertiwi K Maharani Pertiwi Koentjoro Maharani Pertiwi Koentjoro Maharani Pertiwi Koentjoro Maharani Pertiwi Koentjoro Maharani Pertiwi Koentjoro Maharani Pertiwi Koentjoro Maharani Pertiwi Koentjoro Maharani Pertiwi Koentjoro MARIA BINTANG Maryadi Masduki Masruroh, Inayatul Minto Basuki Moh. Rasyid Ridho Mohamad Riyadi Muchlis, Nurfahmi Muhammad Taufiq Hidayat Munif, Tri Haidar Najla, Syarifah Amira Nanda, Luthfiah Nazhirotin, Talitha Syadza Nengah Dwianita Kuswytasari Niki Yuliansari, Niki Noor Nailis Saadah Nur Maulidhaturrafida Nurlita Abdulgani Nurul Jadid Nuryanto, Muhammad Khairul Pawestri, Aulia Puspita Lisdiyanti Putri, Arum Maulinda Rabbani Kharismawan Rahma, Rosyida Muthia Rahmawan, Marjori Bethania Ramadhan, Satria Rizky Ramadhani, Izzah Desta Bastian Rena Feri Wijayanti Rico Hutama Sulistiyo Rico Hutama Sulistiyo, Rico Hutama Ronny Isnuwardana Sa’adah, Noor Nailis Saddewisasi, Wyati Saputra, Rudi Savitri, Fania Mutiara Seru, Rian Ananta Pasolang Shavieka, Imada Mella Shovitri, Maya Sidratu Ainiyah Sulistyandari, Utari Sumartinah, Happy Ratna SUSILO, BUANA Suyatmini Syariful Hadi, Muhammad Tri Wahyu Hidayat Tricindra, Dzulhannisa Triono Bagus Saputro, Triono Bagus Ulpah, Rini Wahidatul Unarto, Tirto Wardoyo, Paulus Wati, Henny Diana Wawan Suranto WIGUNA, EKO CHANDRA Wijayanti, Sakti Fadi’a YUDI NUR SUPRIADI YULIANA, NUNIEK Yuliatmoko, Bagus Albaranu Zuhratunnisa, Aqilah