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All Journal Jurnal Teknik ITS International Journal of Marine Engineering Innovation and Research Jurnal Airaha

Sutopo Purwono Fitri

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Author-ID : 2776480

Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Articles

Analisa Kinerja Termal Solar Apparatus Panel pada Alat Destilasi Air Payau dengan Sistem Evaporasi Uap Tenaga Matahari Menggunakan CFD Nadia Handayani; Taufik Fajar Nugroho; Sutopo Purwono Fitri
Jurnal Teknik ITS Vol 3, No 2 (2014)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Upaya penyaluran air bersih ke daerah pesisir belum dilakukan secara merata sehingga masyarakat masih mengkonsumsi air payau untuk kehidupan sehari-hari. Meskipun telah banyak dikembangkan alat destilasi air laut menjadi air tawar, namun masih memiliki sistem yang kompleks dan biaya yang mahal, sehingga dikembangkan alat destilasi air menggunakan sistem evaporasi uap dengan sumber tenaga matahari. Untuk mengetahui kinerja termal alat destilasi ini, maka dilakukan penelitian dengan metode simulasi menggunakan pendekatan computational fluid dynamic (CFD) menggunakan software GAMBIT 2.4.6 dalam tahap pembuatan domain yang selanjutnya disimulasikan menggunakan software ANSYS FLUENT 13. Simulasi dilakukan pada solar apparatus panel secara three dimensional (3D) menggunakan model turbulensi Realizable k-ε, solar load model dan model radiasi Rosseland. Selanjutnya, simulasi dilakukan dengan variasi kecepatan masuk aliran air ke dalam pipa yaitu 0.01 m/s, 0.02 m/s, 0.03 m/s dan 0.04 m/s. Dari hasil pemodelan dan analisa diketahui bahwa distribusi temperatur terbesar terdapat pada pipa. Energi maksimum yang dapat diterima oleh air adalah 369.591 W/m2 pada pukul 10.00 dengan kecepatan 0.04 m/s. Nilai heat losses yang terjadi pada masing-masing kecepatan berbanding terbalik dengan nilai efisiensi yang menurun setiap jam, rata-rata efisiensi terjadi pada sore hari mulai dari pukul 11.00 – 13.00. Nilai efisiensi rata-rata pada kecepatan 0.01 m/s yaitu 27.6%. Pada kecepatan 0.02 yaitu 30.2%. Pada kecepatan 0.03 yaitu 31.6% sedangkan pada kecepatan 0.04 yaitu 33.4%.

Application Waste Sawdust as Mixed Polyurethane Insulation in Traditional Cold Storage of Fishing Vessel Sutopo Purwono Fitri; M. Badrus Zaman; Dwi Priyanta; Mochamad Hidayat
International Journal of Marine Engineering Innovation and Research Vol 1, No 2 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

In the process of fishing it takes some supplies such as fishing equipment, instrumentation and storage of fish. The traditional fishermen of their fishing days fishing usually only bring ice cubes. Solid plastic polyurethane foam is a mixture solution of polyols and isocyanates, commonly used as an insulating material storage. From the observation waste generated being sawmill sawdust per spindle with diameter of 30 cm and a length of 1 m with 5 times sawmill, Saws 0.8 cm thick produced 0.0088 m³ / burnable logs only discarded. Therefore takes thermal conductivity test to review mixture of sawdust and polyurethane comparison with variations different dosing. Maximum disposals sawdust can be done is 40% of the total volume of material mixture, polyurethane and sawdust because composite material (sawdust-polyurethane) can not be bond with good so easy slab separately from origin form. Thermal Conductivity insulating good and economical on disposals 40% wood flour (0.05252 W / m°C) and is able to maintain a 2 kg of ice crystals melt up perfect on 34 hours. Operating profits economical from 4,8 m³insulation composite application with obtained Rp 4.486.000 compared with 100% Polyurethane Insulation Manufacture.

Design of High Rate Blender Hydraulic Power Pack Unit on Stimulation Vessel – Study Case Stim Star Borneo for Offshore Operations at Delta Mahakam area – East Borneo Hari Prastowo; Sutopo Purwono Fitri; Raja Oloan Saut Gurning; Sahrul Abidin
International Journal of Marine Engineering Innovation and Research Vol 1, No 2 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

Application of Hydraulic Power technology in world industry today is still continue to increased. Not only in Industrial it’s self, but in Marine, Onshore and Offshore also use these technologies. Requirement of service in well services - Offshore Delta Mahakam region makes PT. Halliburton Indonesia as a Service Company increase his fleet service. The Type Stimulation Vessel Fleets - Stim Star Borneo is planned to improve the service unit of High Rate Water Pack (HRWP) with High Pressure Pump unit plus Gravel Pack Sand (GP) and High Rate Blender Unit. Blender High Rate is a unit tubular mixing blender driven by hydraulic power, motors blender, sand screw, pump suction and discharge pump that’s is installed unity. For that The authors will plan system, calculation and specifications of Hydraulic Power Pack Unit for High Rate the Blender. Calculations start from of Operasional Requirement Conditions, and continued with Design Block Diagram, P & ID, and also calculations of systems such as Head, RPM, Pipe Diamater, Pipe Thickness, Main Hydraulic Pump, Reservoir Tank and Cooler. Where The Requirement of Hydraulic Main Pump Power is 950 kW with Electric Motor as prime mover 950 kW. The final result of the design is show as Layout and Detail drawing in attachment.

Experimental Study of Thermoelectric Generator as Electrical Source of Impressed Current Cathodic Protection for Ship Hull Adi Kurniawan; Sutopo Purwono Fitri; Muhammad Fajrul Rahman
International Journal of Marine Engineering Innovation and Research Vol 1, No 3 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

Impressed Current Cathodic Protection (ICCP) is a method to protect metallic material such as ship hull from corrosion by using electric current. In this research, a prototype of thermoelectric generator is developed in order to supply the ICCP system. This thermoelectric generator is planned to utilize the exhaust gas from main engine of the ship. Method carried in this research is assembling the prototype of thermoelectric generator followed by conducted experiment to observe the potential energy of the prototype. After that, the required number of thermoelectric generator is calculated to supply the ICCP system to protect the ship from corrosion. The object in this research is live fish carrier “Wellboat” which has 396.08 m2 wetted area. The required voltage and current to protect the ship from corrosion for three years are 16.67 Volt and 2.66 Ampere. Based on the experiment, a prototype of thermoelectric generator can generate 0.34 Ampere and 4.43 Volt, causing the need of 8 series and 4 parallels connection. It can be concluded that the corrosion rate on the ship hull can be decelerated by using impressed current cathodic protection method without needing additional cost or fuel consumption to produce electric energy.

Design of Organic Rankine Cycle (ORC) Power Plant Systems by Using Flat-Plate Solar Collector Sutopo Purwono Fitri; M Badrus Zaman; Fahri Adib Azizi
International Journal of Marine Engineering Innovation and Research Vol 4, No 3 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Electrical energy is the most used energy today in daily activities and industry is increasing. In rural areas that do not have electricity still exists in Indonesia. In this study, it can be used as an alternative power plant that can be used by the countryside. The system used in this study is the new types of power plants, namely the Organic Rankine Cycle (ORC) system. In connection with the problems stated above, through this research, an effort will be made to design an ORC power generation system. The ORC power plant system that will be designed utilizes solar energy sources and working fluids. Solar power is used to heat the heating fluid in the form of water. This heating water is used to vaporize the working fluid which can evaporate at low temperatures and high pressures. So that the working fluid gas can be used to rotate the turbine shaft and produce electrical energy through a generator. Simulation is done using energy system software. In addition to simulations, examples of manual calculations are also needed for validation. The simulation results of the ORC generating system design on the two working fluids produce the greatest power at the pump outlet pressure of 6 bar with Ẇnet of 13.61 kW and the smallest power is generated by the pump outlet pressure of 5.03kW. While the design simulation of the ORC generating system produces power close to 10 kW at the pump outlet pressure of 5 bars with 11.38 kW. The flat collector solar-plate system gets the energy that is useful for collectors of 191.92 W and an efficiency of 9.8%.

OPTIMASI DESAIN GENERATOR PHOTOVOLTAIK-DIESEL BERDASARKAN LAJU PENANGKAPAN IKAN DAN LIFE CYCLE COST, STUDI KASUS BAGAN PERAHU 10 GT DI PERAIRAN SAMATE PEMDA RAJA AMPAT, PAPUA BARAT Akhmad Nurfauzi; Sardono Sarwito; Sutopo Purwono Fitri
Jurnal Airaha Vol 2 No 1: Juni 2013
Publisher : Politeknik Kelautan dan Perikanan Sorong, Indonesia

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Utilization of Gen-set Hibrid Photovoltaik-Diesel (DC-AC Couple Battery-Backup Grid Connecting PV System) is a efforts to minimization operational cost from Stick held dipnet. This case is caused by diesel fuel which has higher price and rare. This article will discuss about analysis approach as first, calculate impact need of lighting toward rate of catching phototaxis fish. This case use analysis different test (test of t) toward output of optimum catching use 4 underwater lamps which have different of kind. The porpose from this case to analysis genset diesel capacity by usage optimum power of lighting. The method will be used is calculating instrumentation load factor, synchronic factor, and load of genset factor as standart of BKI. Based on monitoring, selected under water lamp E-CDL 45 W is real different (tcalculate3,4355>ttable2,776) which has more optimum catching of fish (6960 Kg) than others. Based on calculating needed daily load capacity 2530 W. It mean the capacity of Genset Hibrid PV array-Diesel 34020 Wh, appropriate with Samate water condition which has low and high temperature (27,1o C and 31,8o C) needed 15 PV-modul @200 W (the voltage and electric current source of PV array 100 Vdc and 31,6 A), bank battery 14 units @200 AH/12 V which has output voltage is 24 Vdc, 2 units charge controller (@current input 15 A), 1 unit inverter (voltage input 24 Vdc/output 240 Vac and 3000W), battery charger (input 240 Vac/output 24 Vdc), and MCB (standby load : single phase 220 Vac) 15 A Busbar 45 A. Ecomonic analysis use Life Cycle Cost (LCC) method toward genset (diesel and Hibrid PV array-diesel). From the calculating, nominal of LCC genset Hibrid PV array-Diesel (Rp.173.421.297,-) lower or cheaper than LCC genset diesel (Rp.223.715.493,-). The net from this case is Rp.50.294.196,- which got for 20 years instrumentations usage. The last discuss about calculating distance between stick held dipnet and area which can reached to outside lighting lamp (E-CDL 50 W) at height 5 meters toward surface of sea water is 235 m2.

Co-Authors Adi Kurniawan Dwi Priyanta Fahri Adib Azizi Hari Prastowo M Badrus Zaman M. Badrus Zaman Mochamad Hidayat Muhammad Fajrul Rahman Nadia Handayani Nurfauzi, Akhmad Raja Oloan Saut Gurning Sahrul Abidin Sardono Sarwito Taufik Fajar Nugroho

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