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Made Suarda
Program Studi Teknik Mesin, Universitas Udayana
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Perancangan dan Pengujian Katup Membran Pada Katup Tekan Pompa Hydram Design and Performance Assesment of Membran Delivery Valve in Hydram Pump Made Suarda
JURNAL MECHANICAL Vol 4, No 1 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pompa hydram dengan ukuran yang sangat besar, terbesar yang telah ada di Bali, telah dirancang dan dibuat pada kegiatan Iptek bagi Masyarakat (IbM) tahun 2010. Pompa hydram tersebut beroperasi pada head sangat tinggi yaitu 90 meter pada panjang pipa tekan 900 meter. Namun, karena tingginya head operasi pompa tersebut maka katup tekannya cepat sekali rusak. Untuk itu perlu dicarikan solusi untuk menghindari cepatnya kerusakan katup tekan tersebut, salah satunya adalah dengan menggunakan katup tekan model membran dimana luasan yang bertumbukan relatif sangat kecil sehingga gaya tumbukan pada katup yang terjadi akibat palu air kecil pula. Oleh sebab itu perlu diketahui bagaimana rancangan dan performansi model katup plat, dan membran pada katup tekan pompa hydram. Dari rancangan model katup membran tersebut dilakukan pengujian performansi pompa hydram pada ketinggian air suplai 3 meter dan ketinggian pemompaan 10, 15 dan 20 meter. Kemudian hasilnya dibandingkan dengan performansi katup tekan model plat. Dari hasil pengujian menunjukkan bahwa katup tekan model ‘membran’ memberikan unjuk kerja atau performansi seperti debit pemompaan, daya output, efisiensi volumetris maupun efisiensi total yang jauh lebih baik dibandingkan katup tekan model ‘plat’. Kata Kunci: pompa hydram, katup plat, katup membran, performansi pompa hydram Abstract A big hydram pump, may be biggest one in Bali, has been designed and constructed on community services activity, Iptek bagi Masyarakat (IbM), in year 2010. The pump works on a high geodetic head 90 meter with length of delivery pipe 900 meter. However, because of that high head condition has been made its delivery valve ease to broken. Therefore, it needs a solution to avoid that problem. One potential solution is by use membran type of delivery valve, which is this valve has less impact area than plat valve type, therefore impulse force that takes placed is smaller as well. Furthermore, it needs to make design of plat and membran type of hydram pump delivery valve, and then assess its performance. Both type of delivery valve are operated with 3 meters drive-head on variation of delivery head i.e 10, 15 and 20 meters. Then, their performance are comparised. The results show that the membran type of delivery valve give better performance such as capacity, power, volumetric efficiency and total efficiency than the plat type Keywords: hydram pump, plat delivery valve, membran delivery valve, hydram pump performancy
Preliminary Study on Various Shaped Models of Delivery valve in Hydraulic Ram Pump – Experimental Results Made Suarda; I Gusti Bagus wijaya Kusuma; Made Sucipta; Ainul Ghurri
International Journal of Engineering and Emerging Technology Vol 5 No 1 (2020): January - June
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2020.v05.i01.p09

Abstract

Four shaped models of delivery valve had been investigated and compared to improve performance of a hydraulic ram. Hydraulic ram pumps have been constructed and operated. Most of them built locally using steel pipe fittings that commercially accessible in the market rather than factory-made one. These have assisted inhabitants in rural or hilly area where water sources available for water supply services or irrigations. However, the major problem challenged by the public was on designing and repairing of the impulse and delivery valves of the pumps. Performance of the pumps are affected predominantly by the both valves. One characteristic of the valves is their shape. Considered on the characteristics of the fluid flow through surface of plate and sphere object are different on the pattern and losses. Therefore, investigation is necessitated to find a proper shape of the delivery valve for enhancing the performance of the pump. In this research four valve models were experimented to assess the hydraulic ram pump performance on varies delivery heads. The results show that the sphere model of the delivery valve offered the best efficiency, then followed by the membrane, the half-sphere and the flat delivery valve models. However, the rounded model: sphere and half-sphere delivery valve model were facing obstructions in implementation for a high delivery head.
SIMULASI COMPUTATIONAL FLUID DYNAMIC PADA MODEL TURBIN VORTEX VARIASI KECEPATAN ROTASI RUNNER Ibnu Gusti Muttaqin; Made Sucipta; Made Suarda
SIBATIK JOURNAL: Jurnal Ilmiah Bidang Sosial, Ekonomi, Budaya, Teknologi, dan Pendidikan Vol. 1 No. 8 (2022): July
Publisher : PENERBIT LAFADZ JAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/sibatik.v1i8.188

Abstract

Desa terisolir di Indonesia sulit untuk mendapatkan energi listrik, maka perlu adanya solusi energi terbarukan untuk jawaban terhadap kebutuhan energi listrik di desa terisolir. Pembangkit listrik tenaga air menjadi salah satu pilihan dalam memanfaatkan sumber energi terbarukan, salah satunya adalah teknologi turbin vortex. Penilitian Dhakkal, dkk 2017 menunjukan bahwa kecepatan rotasi berpengaruh terhadap kinerja dari turbin vortex. Maka penelitian ini akan memvariasikan kecepatan rotasi yaitu 70 rpm, 90 rpm, 110 rpm, dan 130 rpm dengan metode simulasi CFD software Ansys Fluent. Dari penelitian ini didapatkan hasil pada kecepatan rotasi 70 rpm sampai 90 rpm terjadi kenaikan efisiensi, efisiensi tertinggi terdapat pada 90 rpm dengan nilai momen puntir 1,988 n/m dan efisiensi 34,74 %. Sedangkan ketika kecepatan rotasi dinaikan sampai 150 rpm, terjadi penurunan efisiensi. Efisiensi terendah terdapat pada kecepatan sudut 150 rpm dengan nilai momen puntir 0,859 n/m dan efisiensi 25,02 %. Hal ini disebabkan karena peluapan aliran dan kecepatan rotasi yang tinggi.
Kinerja Turbin Vortex dengan Sudu Semi Twisted Curve I Nyoman Mariawan; Made Sucipta; Made Suarda
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 8 No 1 (2022)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2022.v08.i01.p07

Abstract

Turbin vortex adalah turbin yang beroperasi dengan memanfaatkan aliran vortex sebagai penggerak sudu-sudu turbin yang kemudian poros turbin dihubungkan ke generator untuk mengkonversi energi mekanis poros kedalam bentuk energi listrik. Salah satu parameter yang berpengaruh terhadap kinerja turbin vortex adalah bentuk sudu. Banyak penelitian tentang sudu turbin vortex yang telah dilakukan, seperti berbentuk profil 3D curve helix dan curved. Pada penelitian ini dilakukan pengujian secara eksperimental sistem turbin vortex menggunakan sudu semi twisted curve dengan sudut sudu 40°, 60° dan 80° diuji pada posisi runner turbin 0 cm atau sejajar dengan dasar saluran air menuju basin. Debit aliran air yang digunakan adalah 0,006 m3/dt. Hasil penelitian menunjukan daya dan efisiensi tertinggi dihasilkan turbin dengan sudu 60° yaitu 7,21 watt dan 28,47 % pada putaran 80 rpm.
Simulasi CFD Pertukaran Udara di Ruang Tindakan Klinik Kesehatan I Putu Widiarta; Made Suarda; Made Sucipta; I Gusti Ketut Sukadana
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 8 No 2 (2022)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2022.v08.i02.p03

Abstract

Klinik kesehatan merupakan fasilitas pelayanan kesehatan. Klinik kesehatan adalah bangunan yang penuh dengan sumber infeksi, terutama infeksi melalui udara. Pengendalian infeksi virus melalui udara dapat dilakukan dengan kontrol engineering yaitu dengan penambahan sistem ventilasi dan untuk mencapai kenyamanan termal ruangan maka dibutuhkan sistem pengkondisian udara. Penambahan sistem ventilasi mekanis berupa exhaust fan dan inflow membuat adanya sirkulasi udara dimana udara segar dimasukan melalui saluran inflow dan udara kotor dikeluarkan melalui saluran exhaust fan sehingga resiko penularan virus melalui udara dapat diminimalkan. Pola aliran dari sirkulasi udara penting dilakukan analisis karena agen infeksius yang ringan cendrung mengikuti pola aliran. Untuk mengetahui pola aliran dan pengaruh dari jumlah exhaust fan serta sudut flapper AC dilakukan dengan metode simulasi CFD (Computational Fluid Dynamics) serta dilakukan pengujian secara eksperimen yaitu pengukuran tekanan dan temperatur serta kelembaban udara relatif. Variasi sudut flapper AC pada pengujian tanpa penambahan sistem ventilasi memberikan pengaruh terhadap input aliran sehingga titik-titik vortex terjadi pada posisi yang berbeda-beda. Sedangkan sudut flapper AC pada penambahan sistem ventilasi tidak dominan memberikan pengaruh terhadap pembentukan pola aliran. Penambahan inflow dan exhaust fan menunjukan terjadi superposition flow. Sedangkan variasi jumlah exhaust fan menunjukan semakin banyak jumlah exhaust fan maka kecepatan aliran udara diruangan menjadi meningkat dan tekanan udara ruangan menurun serta sirkulasi aliran dalam ruangan menjadi lebih merata. The health clinic is facilities of health service. A health clinic is building fully on the infection source, especially airborne infection. The spread of virus control from the air can perform by engineering control such as added mechanical ventilation system and to reach the thermal comfort, a system of air conditioning is needed. In addition, a mechanical ventilation system that is an exhaust fan dan inflow can create the air circulation where fresh air enters through inflow channels and dirty air goes out through exhaust fan channels, so the risk of airborne infection can be reduced. The airflow pattern from air circulation is important for analysis because infectious agents which are light in weight that tend to follow the airflow pattern. To find out the airflow pattern and influence from variations of the number of exhaust fans as well as the angle of the AC flapper, it is done using the CFD (Computational Fluid Dynamics) simulation method and carried out experimental tests, namely the measurement of pressure and temperature. The angle of the AC flapper tested without added ventilation system influenced the input of stream from AC blower then, the position of vortex had indifference location. While the angle of the AC flapper tested with the additional mechanical ventilation system did not influence airflow pattern formation. Added inflow dan exhaust fan showed the occurrence of the superposition flow. While the more of the number exhaust fans shows, the velocity of air in the room increases and the indoor pressure is decreasing as well as the air circulation in the room becomes more equally.
MESIN PENCACAH SAMPAH ORGANIK SKALA RUMAH TANGGA I.K.G. Wirawan; I.K.G. Sugita; M. Suarda; K. Astawa
Buletin Udayana Mengabdi Vol 23 No 2 (2024): Buletin Udayana Mengabdi
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BUM.2024.v23.i02.p03

Abstract

Kuta Utara is a district in Badung Regency, Bali, Indonesia, which consists of six villages, one of which is Kerobokan Kaja. The use of yards as land for ornamental plants in Kerobokan Kaja is very high, reaching up to 65%. The consequence of this large number of ornamental plants is the amount of leaf waste produced by plants in each house. This leaf litter can be used as a basic material for compost. These leaves need to be chopped in order to expand the contact area so that the decomposition process will be faster. Therefore it is necessary to make a household scale organic waste chopper machine. Aside from speeding up the decomposition process, this chopper machine also reduces the volume of organic waste, especially leaves by up to 60%. With this organic waste chopper, it is expected to reduce the volume of waste that burdens the Final Processing Site. Keywords: decomposition, chopping machines, volume reduction, organic waste, household scale
OPTIMASI MASSA KATUP LIMBAH POMPA HYDRAM TERPASANG DI WILAYAH MUNDUK GUNUNG DESA PETANG M. Suarda; N.M. Suaniti; M. Sucipta; N. Suweden; I.G.K. Dwijana
Buletin Udayana Mengabdi Vol 23 No 1 (2024): Buletin Udayana Mengabdi
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BUM.2024.v23.i01.p14

Abstract

This paper investigated the effect of the mass of the waste valve of hydraulic ram pump which has been designed and installed to deliver the clean water to the community house in the Munduk Gunung area, Petang Village. Public facilities are still minimal. One of them is the unavailability of clean water service facilities for the community, where people still rely on rainwater or buy water tanks. In accordance with the name of the area, this residential area is located in the highlands (512 m.swl), while the available water sources are in the lowlands (410 m.swl) with an elevation difference of 102 meters. The distance from the spring to the reservoir is 600 meters through a steep cliff. Initial survey results show that the spring has a flow capacity of about 3 liters/second and a potential head of 4.5 meters. The hydraulic ram pump has been designed, built, installed and operated with funding supported through the PNBP service grant from Udayana University, the PUMA scheme. The hydraulic ram pump performance test has been carried out on five variations of the waste valve mass. Performance testing shows that this hydraulic ram pump reaches its optimal performance at a mass of 3.25 kg of waste valve. Under these optimal conditions, this hydraulic ram pump operates at a total efficiency of 95% with a pumping flow of 0.115 lt/sec or 9.94 m3/day) at a pumping elevation of 102 meters, with an economic value of up to Rp. 17,885,000 per month. Therefore, it is with an investment cost of around Rp. 42,500,000 and requires almost no operational costs because it does not require fuel or electrical energy, consequently this hydram pump is very profitable to apply. Keywords: Hydraulic ram pump, waste valve mass, pump performance, Munduk Gunung area, Petang village.
UJI PERFORMANSI POMPA HYDRAM DALAM PENYEDIAAN AIR BERSIH KELOMPOK USAHA BON BELOK KOPI DAN BANJAR ADAT BON DESA BELOK/SIDAN M. Suarda; N.M. Suaniti; M. Sucipta; N. Suweden; I.G.K. Dwijana; I.P. Widiarta
Buletin Udayana Mengabdi Vol 23 No 1 (2024): Buletin Udayana Mengabdi
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BUM.2024.v23.i01.p06

Abstract

This paper examined the performance of the hydraulic ram pump that has been designed and installed to meet the clean water needs of the 'Bon Belok Kopi' Business Group and several families of Bon traditional community in Belok/Sidan Village, Petang District, Badung Regency, Bali Province. This business group is shortage to clean water in the process of processing their coffee production so that the community relies on rainwater and buys water from tank cars at a price of sixty thousand rupiah per cubic meter. Likewise, the Bon traditional community experienced the same problem, especially for their traditional activities. This problem has an impact on the capacity, quality and cost of coffee production of the business group, as well as the cleanliness, health and economy of the Bon traditional community. In the Bon area, there is a spring in the garden area belonging to the head of the business group with a flow rate of 3 liters/second at an elevation of 1024 m.swl, while residential areas are located at an elevation of 1135 m.swl. The hydraulic ram pump has been designed, built, installed and operated. The hydraulic ram pump performance test has been carried out on five variations of the pumping head. At a pumping head of 70 m, at the location of coffee processing, it produces a pumping flow of 8.84 m3/day with the pump efficiency of 71%. Meanwhile, at the highest pumping head of 110 m, at Puncak Bon Temple, it produces a pumping discharge of 5.04 m3/day with the pump efficiency of 59%. Keywords: Hydram pump, pump performance, Bon Belok Kopi, Bon traditional community.
Karakteristik Penyimpanan Biogas Dengan Karbon Aktif Berbasis Bambu Apus Dengan Steam Activation Made Sucipta; Hendra Wijaksana; Made Suarda; I Gusti Komang Dwijana; Epenetus Rapael; I Gede Krisna Pratama; Cindy Dwi Meylinda
Jurnal Energi Dan Manufaktur Vol 6 No 2 (2023): Oktober 2023
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEM.2023.v16.i02.p08

Abstract

Salah satu metode penyimpanan biogas dapat dilakukan dengan teknologi Adosrbed Natural Gas (ANG) menggunakan media adsorben dengan luas permukaan yang besar. Karbon aktif merupakan media yang sangat atraktif untuk dapat digunakan pada teknologi ANG. Salah satu teknologi yang dikembangkan adalah aktivasi secara fisika dengan menggunakan media uap (steam). Pada penelitian ini telah dilakukan pembuatan karbon aktif dengan menggunakan metode steam activation dengan menggunakan precursor bambu apus dengan variasi temperatur karbonisasi sebesar 525 , 625 , dan 725 . Karbon yang dihasilkan selanjutnya diaktivasi dengan ukuran mesh 70-230 pada temperature 425 dengan holding time selama 2 jam. Hasil penelitian menunjukkan bahwa semakin besar temperatur karbonisasi maka semakin besar pula penurunan massa dari precursor bambu pada masing-masing proses karbonisasi dan aktivasi. Pada pengujian kemampuan penyimpanan biogas, karbon aktif sebanyak 15gram dimasukkan ke dalam tabung penyimpanan biogas. Sebagai pembanding, dilakukan pula pengujian dengan tabung penyimpanan tanpa karbon aktif. Hasilnya, kapasitas penyimpanan biogas yang lebih tinggi diperoleh pada tabung penyimpanan biogas yang diisi dengan karbon aktif daripada tabung penyimpanan tanpa karbon aktif. Kapasitas penyimpanan biogas meningkat seiring meningkatnya temperatur karbonisasi. Penyimpanan tertinggi tercapai pada temperatur 725 dengan massa 37,2gram pada tekanan 100 psi.
CFD (Computational Fluid Dynamics) Simulation of Hydrodynamic Vortex Turbine Performance: Influence of Notch Angle Variation on Flow Patterns and Efficiency Sukadana, I Gusti Ketut; Made Suarda; I Putu Widiarta; Ishak Danus
Natural Sciences Engineering and Technology Journal Vol. 4 No. 2 (2024): Natural Sciences Engineering and Technology Journal
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/nasetjournal.v4i2.56

Abstract

Hydrodynamic vortex turbines (HVTs) offer a promising solution for harnessing renewable energy from low-head water sources. The inlet notch angle, a critical geometric parameter, significantly influences the flow patterns within the turbine basin and, consequently, its overall performance. This study investigates the impact of notch angle variation on HVT efficiency and flow characteristics using computational fluid dynamics (CFD) simulations. A 3D model of an HVT was developed and simulated using ANSYS Fluent. The notch angle was varied between 7° and 15° in 2° increments. The k-ω SST turbulence model was employed to capture the complex flow behavior. Velocity and pressure contours were analyzed to understand the flow patterns, while turbine performance metrics, including torque, power output, and efficiency, were computed. The results revealed a strong correlation between notch angle and turbine performance. Increasing the notch angle led to higher flow velocities in the turbine basin, resulting in enhanced vortex formation and increased energy extraction. Consequently, both power output and efficiency improved with larger notch angles. The optimal notch angle, balancing efficiency and practical considerations, was identified. This study demonstrates the critical role of notch angle in HVT design. CFD simulations provide valuable insights into the flow dynamics and performance optimization of these turbines. The findings contribute to the advancement of HVT technology for sustainable micro-hydro power generation.
Co-Authors A.A. Adhi Suryawan A.A.A. Suryawan Ainul Ghurri Anak Agung Adhi Suryawan Cindy Dwi Meylinda Epenetus Rapael Hendra Wijaksana I .G. P. Agus Suryawan I G.N.O. Suputra I Gede Krisna Pratama I Gusti Bagus Wijaya Kusuma I Gusti Ketut Sukadana I Gusti Komang Dwijana I Gusti Komang Dwijana I K. A. Atmika I Ketut Adi Sugita I Made Astika I Made Suardamana I Nengah Suweden I Nyoman Mariawan I Putu Widiarta I Putu Widiarta I.D.M.K. Muku I.G.K. Sukadana I.K.A. Atmika I.K.G. Wirawan I.M. Astika I.P. Widiarta Ibnu Gusti Muttaqin Ishak Danus K. Astawa Kadek Bayu Laksana M. Sucipta Made Sucipta Ni Made Suaniti Putu Lokantara