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All Journal Jurnal Teknik ITS International Journal of Marine Engineering Innovation and Research Proceeding Maritime Business Management Conference
Taufik Fajar Nugroho
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Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (517.416 KB) | DOI: 10.12962/j23373539.v3i2.7862

Abstract

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%.
Design of Air Ventilation System for Cargo Hold Vessels Using Solar Desiccant Alam Baheramsyah; Taufik Fajar Nugroho; Prasetyo Adi Wibowo
International Journal of Marine Engineering Innovation and Research Vol 1, No 4 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (689.23 KB) | DOI: 10.12962/j25481479.v1i4.2695

Abstract

One of the facilities and infrastructure of the vessel is the ventilation system in the cargo hold to maintain the quality. One attempt to avoid high moisture ratios is to provide a dry air supply by using desiccants. The purpose of this thesis is to design the system of air ventilation with solar desiccant by analysis the calculation with decrease air humidity ratio after passing desiccant rotor as well as fulfillment needs of heater and cooling system using heat of exhaust gas and seawater as well as fulfillment of electricity need using solar energy. From the result of analysis obtain to provide air supply in the cargo hold of 437.5 m3 / hour, the specification of rotor desiccant has a diameter of 550 mm with thickness 200 mm to decrease ratio of outside air humidity equal to 83.1% become 46.5%. Dehumidification air temperature of 47.7oC will be lowered to 35oC by using the sea water cooling media. As for the reactivation air heater requirement of 24.292 kW would be to fulfilled by utilizing the exhaust power of 498.12 kW. And for the electric power needs of the syetm is 34,488 wp will be supplied from the total solar module is 33 units with 345 wp per-capacity.
STUDI KELAYAKAN FINANSIAL PENAMBAHAN KAPAL LINTASAN LEMBAR – PADANGBAI PADA PT XXX Syafiuddin Syafiuddin; Taufik Fajar Nugroho
Proceeding Maritime Business Management Conference MBMC: Proceeding Maritime Business Management Conference 2024
Publisher : Program Studi D4-Manajemen Bisnis, Jurusan Teknik Bangunan Kapal, Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/mbmc.v3i1.3294

Abstract

Increasing the number of ships that operate at a certain track is one way to support overall company’s performance. With the result business management should consider the balance of transportation service demand. Since the ship procurement was delayed and the long-distance ferry services adding up for Lombok, the feasibility profile need to be reconsidered. The case that one ship will be rejuvenated while the other ship already reaches the operational life. Besides, the increased demand on Lembar-Padangbai track is an opportunity to develop the company. Using 7 years of production historical data, technical data of 77.72 m of overall length roro vessel, the consumption cost, operational parameters, and also investment parameters, and 65.51 on load factors (LF), the study shows optimistic financial feasibility results. IRR value 15.97% and this value is higher than the Weighted average cost of capital (WACC) 9.83% and payback-period is 12 years for 20 years of operational life. Sensitivity analysis shows that the higher self-financing percentage gives a better financial feasibility value.
Co-Authors Alam Baheramsyah Nadia Handayani Prasetyo Adi Wibowo Sutopo Purwono Fitri Syafiuddin Syafiuddin