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All Journal Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer EMITTER International Journal of Engineering Technology Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Jurnal Teknologi Terapan
Hendrik Elvian Gayuh Prasetya, Hendrik Elvian
Institut Teknologi Sepuluh Nopember, Surabaya
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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STUDI EKSPERIMEN SUPLAI GENERATOR OXYHYDROGEN MENGGUNAKAN KATALIS KOH Prasetya, Hendrik Elvian Gayuh; Pratilastiarso, Joke; Amalia, Rif'ah; F, Mardatillah Intan
Jurnal Teknologi Terapan Vol 5, No 1 (2019): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1035.66 KB) | DOI: 10.31884/jtt.v5i1.155

Abstract

Oxyhydrogen  is  the  most  promising  gas  which  significantly  can  reduce  the  fuel consumption  and  the  number  of  emissions  that  produced,  by  adding  the  gas  into combustion  chamber.  To  utilize  decreasing  emissions,  this  paper  study  about  added oxyhydrogens  gas  on  combustion  process  (hybrid)  in  motor  fuel.  This  paper  focuses  on evaluating  the performance  (power, mass  flow, and efficiency)  of oxyhydrogen generator with  12V source  voltage,  while  for  the  generator  installation  circuit  is  done  in  parallel which  is  expected  to  produce  maximum  oxhydrogen  gas  content.  The  type  of  electrolyte used as a generator solution is a base  ????????????  concentrate (1, 3, 5, 7, 9 gram / Li ter), basic solution  ????????????  is  chosen  because  it  has a tendenc to produce a  lot of hydrogen gas.  The methods are design the generator, string the generator and the measuring instrument up, and also the performance testing. As the result, the higher consentrate of the catalyst, the higher the power needed, the higher  mass flow produced, and the higher efficiency that obtained by using parallel electrode aligntment.
Rancang Bangun Control Valve untuk Sistem Pengendalian pada Tangki Peyimpanan Azhim, Fadlul; Gayuh Prasetya, Hendrik Elvian; Tridianto, Erik
Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Vol 2 (2019): PROSIDING SENTIKUIN
Publisher : Fakultas Teknik Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.995 KB)

Abstract

The control system is an engineering discipline that involves mechanisms and algorithms to control the output of a process with the desired results. Modern industries and power plants use control valves as a control system in storage tanks. The control valve is a very important component in this regard as a final element. Therefore, we designed a control valve starting from the sizing control valve, mathematical modeling of the system to programming on Arduino and Visual Basic .NET so that it can be observed and understood directly. After sizing the control valve, it can be seen the type of valve that meets the valve opening standard is Globe valve at 46.8% and Ball valve at 33.0%. In this study, the commonly used PID tuning method is Ziegler Nichols tuning method to test the control system. The PID parameter is obtained through the tuning results in the Matlab simulation using mathematical modeling of the system. Control valve simulation with Matlab produces parameters Kp= 0.5625, Ti= 0.3, and Td= 0.7. While the control level produces a parameter Kp= 1.36, Ti= 3.33. The control level of the storage tank is better to use PI control compared to PID controls which continue to increase water levels. Changes in set point from 1 cm to 20 cm produce a 37-seconds settling time with a maximum overshoot value of 6 cm.
Pengaruh Penambahan EM4 Pada Pembuatan Biogas dengan Bahan Baku Kotoran Sapi Menggunakan Digester Fix Dome Sistem Batch Wicaksono, Aria; Amalia, Rif?ah; Gayuh Prasetya, Hendrik Elvian
Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Vol 2 (2019): PROSIDING SENTIKUIN
Publisher : Fakultas Teknik Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.506 KB)

Abstract

Biogas is a gas produced from the fermentation process of organic materials bymicroorganisms in closed conditions (anaerobic). Biogas consists of ± 60% CH4 (methane), ±38% CO2 (carbon dioxide), ± 2% N2 (nitrogen), O2 (Oxygen), H2 (hydrogen), and H2S(hydrogen sulfide). In this research, the making of biogas uses raw materials from cow dung.Cow dung is the right raw material because it contains methane-producing bacteria. Thisresearch aims to determine the influence of the EM4 addition of biogas quality produced. Thisresearch was conducted in the Basic laboratory system of energy generation of the SurabayaState Polytechnic electronics. The method of the research is to use a comparison of cow andwater in raw materials, with a ratio of 1:1 with the addition of EM4 (Effective microorganism)as much as 3 liters on variations of 1 and 1.5 liters on variation 2. Biogas making is carried outon the digester with a volume of 200 liters with a batch system with stirring 3 times a day withfermentation for 25 days. The result of this research is with the addition of EM4 as much as 3liters produce biogas with methane gas content with the amount of 53.6%. The resulting biogascombustion test has a yellowish blue flame, a long flame of 56 seconds. While the addition ofEM4 with a total of 1.5 liters produces biogas with methane gas content with the amount of46.8% yellow flame color with a long flame of fire for 34 seconds
The Development of A Reliability Evaluation Application for Power Plant Steam Turbine Vibrations to Predict Its Failure Moch. Faqih; Nu Rhahida Arini; Hendrik Elvian Gayuh Prasetya
EMITTER International Journal of Engineering Technology Vol 9 No 2 (2021)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24003/emitter.v9i2.619

Abstract

A steam turbine is the most critical component in a thermal power plant. Due to its crucial function, it should be maintained to be able to operate without failure. This paper aims to develop an application that can be used to analyze the reliability and synchronization of vibrations in a single evaluation through the application. The application is helpful to decide the proper time the maintenance should be performed in order to provide a better maintenance strategy. In this paper, the application was used to make an ease in evaluating the reliability and vibration of a 670 MW power plant steam turbine. The reliability was analyzed by qualitative and quantitative methods. The vibration evaluation using Fast Fourier Transform (FFT) was done by diagnosing the failure symptoms from vibration spectrum. The analysis of synchronization of vibrations conducted by comparing the vibration frequency and the natural frequency of the system which can be calculated easily using the application. The algorithm program of both evaluations was built using GNU Octave software to make a friendly user interface. From the evaluation result, the most critical components of the steam turbine are coupling, labyrinth seals, bearing, diaphragm, turbine control valve, and turbine stop valve. The maintenance interval based on the expected reliability of 90% produces the highest reliability improvement. Based on the vibration analysis, there is no failure symptoms detected in the turbine bearings. Furthermore, the dominant frequencies of vibration are distant from the natural frequency. Therefore, the steam turbine condition is acceptable to operate.
Rancang Bangun Sistem Pengendalian Level Pada Tangki Penyimpanan Menggunakan Degree Of Freedom Analysis Dengan Tunning PID Berdasarkan Metode Cohen-Coon Firmansyah Adi Nugroho; Prima Dewi Permatasari; Hendrik Elvian Gayuh Prasetya
Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Vol 9, No 2 (2020): Edisi Desember 2020
Publisher : Fakultas Teknik Elektro - Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/setrum.v9i2.9410

Abstract

The storage tank is one of the most important operating units used in the generation process. This operating unit functions as water storage which will later be used as raw material for making steam. To maintain the mass balance system and the energy balance system in the storage tank, a proper control system is needed. One of the variables controlled in this operating unit is implementing a level control system. In a process control system, key knowledge is needed, namely determining the process variable (PV), manipulated variable (MV), and disturbance variable (DV). If it is wrong in determining the three types of variables, then the output from the control system that we provide is not by the value we want (setpoint). Analysis of degrees of freedom (DOF) is used to determine the number of manipulated variables in the storage tank operation unit. To determine the number of variable numbers and the number of equation numbers can be used by looking at the mathematical equation model of the storage unit operation. Meanwhile, to determine the number of variables used in the above equation is to choose the type of variable that affects the process if the variable is changed. PID tunning needs to be done to determine the best proportional, derivative, and integral constant values, which later the output we want is the same as the setpoint value. Cohen Coon is a PID tunning method that can tolerate a constant amplitude oscillation state. Cohen-Coon is trying to improve the oscillation method by using the quarter amplitude decay method. The closed-loop response system, in this method, is made so that the response is in the form of a quarter amplitude decay. Quarter amplitude decay is defined as a transient response whose amplitude in the first period has a ratio of one quarter (1/4).
Sistem Pengendalian Pada Pembangkit Listrik Tenaga Uap (PLTU) Menggunakan Metode Plantwide Control Hendrik Elvian Gayuh Prasetya
Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Vol 10, No 1 (2021): Edisi Juni 2021
Publisher : Fakultas Teknik Elektro - Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/setrum.v10i1.11225

Abstract

Kebutuhan akan energi listrik tiap tahun terus bertambah, berdasarkan data yang diperoleh dari Rencana Usaha Pengembangan Tenaga Tenaga Listrik (RUPTL) PT. PLN 2015-2024 menyatakan bahwa peningkatan konsumsi listrik tiap lima tahun sekali sebesar 239 GWh. Oleh karena itu dibutuhkan supplay energi listrik yang mampu mengatasi permasalahan tersebut. Terdapat dua macam supplay energi listrik, yakni supplay energi listrik secara konvensional dan non konvensional (energi terbartukan). Supplay energi listrik non konvensial dengan memanfaatkan energi terbarukan saat ini kurang cocok digunakan untuk memenuhi kebutuhan listrik, hal ini dikarena nilai efisiensi yang dihasilkan cukup rendah. Oleh karena itu, supplay energi listrik secara konvensial diharapkan mampu memenuhi kebutuhan listrik hingga tahun 2024. Pembangkit listrik tenaga uap (PLTU) merupakan salah satu contoh supply energi listrik secara konvensial. Prinsip kerja dari PLTU dengan cara membuat uap bertekanan tinggi dari pembakaran batu bara, yang selanjutnya uap tersebut mampu memutarkan turbin dan generator sehingga mengahasilkan energi listrik. PLTU terdiri dari beberapa unit operasi antara lain : economizer, superheater, turbin, condenser, deaerator, dan unit operasi lainnya. Oleh karena itu, diperlukannya sistem pengendalian yang tepat untuk menghasilkan listrik yang sesuai dengan keinginan. Terdapat dua macam cara untuk menentukan sistem pengendalian pada PLTU, yang pertama memasangkan semua sistem pengendalian pada tiap unit operasi dan yang kedua menentukan prioritas sistem pengendalian yang tepat. Langkah menentukan prioritas sistem pengendalian merupakan solusi yang tepat. Salah satu cara menentukan prioritas sistem pengendalian yakni menggunakan metode plantwide control. Terdapat dua jenis metode yang ada pada plantwide yaitu bottom-up dan top-down. Metode plantwide control yang digunakan pada penelitian ini yakni metode top-down. Berdasarkan metode plantwide control, terdapat sembilan macam sistem pengendalian pada PLTU, antara lain : sistem pengendalian pengendalian daya (IC 100) – turbin, sistem pengendalian temperatur (TIC 103) – superheater, sistem pengendalian flow (FIC 103) – steam drum, sistem pengendalian level (LIC 101) – steam drum, sistem pengendalian flow (FIC 101) – steam drum, sistem pengendalian temperature (TIC 101) – economizer, pengendalian temperature (TIC 104) – deaerator, sistem pengendalian flow (FIC 102) – deaerator, dan sistem pengendalian temperature (TIC 102) – condenser. Diharapkan kesembilan sistem pengendalian yang diberikan, mampu menghasilkan respon dinamik yang baik. Uji closed loop merupakan uji yang digunakan untuk mengetahui respon dinamik. Parameter uji closed loop berupa nilai max overshoot, settling time, dan integral absolute error. Berdasarkan hasil penelitian yang dilakukan didapatkan besar maksimum overshoot yang dihasilkan sebesar 0%, nilai settling time tidak melebihi 10000 menit, nilai IAE tidak melebihi 5000, dan semua proses variable mampu mengikuti nilai set point yang diberikan. Oleh karena itu, semua sistem pengendalian yang diberikan menghasilkan nilai respon dinamik yang sesuai dengan yang diinginkan.
Co-Authors Amalia, Rif'ah Amalia, Rif?ah Azhim, Fadlul Erik Tridianto, Erik F, Mardatillah Intan Firmansyah Adi Nugroho Moch. Faqih Nu Rhahida Arini Pratilastiarso, Joke Prima Dewi Permatasari Wicaksono, Aria