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All Journal Jurnal Sains Teknologi Transportasi Maritim Majalah Ilmiah Gema Maritim Saintara : Jurnal Ilmiah Ilmu-Ilmu Maritim Marine Science and Technology Journal JURNAL SAINS DAN TEKNOLOGI MARITIM
Sri Pramono
Universitas IVET Semarang
Astronomy Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Pengkondisian Udara Rumah Tinggal di Semarang Suyanto Suyanto; Sri Pramono
Marine Science and Technology Journal Vol 1 No 1 (2020): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i1.1282

Abstract

The air condition in residential or office buildings needs to be sought so that the conditions are fresh and comfortable for the residents. Indonesia with a tropical climate has hot temperatures and high humidity levels. For this reason, the application of air conditioning systems is needed. The study was conducted by survey to record the size of the house, the area of ventilation, the number and size of air conditioners used, the temperature of the use of air conditioners, and the monthly electricity bill. Data is processed to obtain specific data on the adequacy of ventilation, the level of ACusage, the temperature of AC usage, and the level of AC electricity usage. The results of this study are that 77% of residential houses have ventilation areas that meet minimum requirements. Houses that use AC as much as 60%. Almost all air conditioners are used in sleeping rooms. AC users mostly choose cool comfortable temperatures, which is 55%. As for whochose the temperature of the use of air conditioners in optimal comfortable conditions by 35%. While those who choose warm temperatures to comfort in the use of AC as much as 10%. The average electricity bill due to the use of AC is 34% of the total residential electricity bill.
Pengujian Boiler untuk Pembangkit Listrik Tenaga Panas Laut Andi Hendrawan; Leonardus Heru Pratomo; Sri Pramono; Lusiani Lusiani
SAINTARA Vol 6 No 1 (2022): SAINTARA (Maret 2022)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Akademi Maritim Nusantara Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.087 KB) | DOI: 10.52475/saintara.v6i1.137

Abstract

Energy needs are one of the reasons why research on renewable energy is the choice. One of the renewable energies is OTEC (ocean thermal energy conversion) with sea surface heat being an energy source and boilers being a medium for converting heat energy into motion energy so that in the end it becomes electrical energy. Boilers are a vital part of a generator, so boiler testing is a requirement for a generator. The research was carried out by experiment by testing the boiler with various temperatures and pressures so as to produce output power. The results show that temperature and pressure are highly correlated with output power. The application of OTEC shows that temperature and pressure are things that must be considered, the higher the surface temperature, the greater the output power.
ANALISA PERHITUNGAN DAYA MESIN KAPAL MENGGUNAKAN METODE GULDHAMER-HARVALD sri pramono; Ahmad Torkis Pangidoanta
JURNAL SAINS DAN TEKNOLOGI MARITIM Vol 21, No 2 (2021): Maret
Publisher : UNIMAR AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (825.07 KB) | DOI: 10.33556/jstm.v21i2.273

Abstract

Dalam sistem penggerak kapal dengan Metode Guldhammer – Harvald adalah suatu metode untuk menentukan besarnya daya mesin yang sesuai dengan propeller pada kapal. Tahapan metode Harvald dimulai dari menentukan : Effective Horse Power (EHP), Delivered Horse Power (DHP), Shaft Horse Power (SHP), Brake Horse Power (BHP). Dari hasil pencarian tersebut didapat daya  sebesar 5.820,071 HP, sehingga daya mesin tersebut sesuai yang beredar di parasan merk CAT 280-16. Dengan menentukan daya yang sesuai kebutuhan kapal, maka kapal dapat bergerak dengan kecepatan yang  di inginkan.                                                                  Kata kunci : Daya Mesin, Metode Guldhammer – Harvald
Perbandingan Kekuatan Uji Tarik Penyambungan Plat Kapal Menggunakan Elektroda RB-26 dan LB-52 Syahrozi; Sri Pramono; Riyanto Wibowo
Majalah Ilmiah Gema Maritim Vol 22 No 2 (2020): Gema Maritim Vol 22 No 2 tahun 2020 tanggal 30 September 2020
Publisher : Politeknik Bumi Akpelni

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (599.145 KB) | DOI: 10.37612/gema-maritim.v22i2.108

Abstract

Pengelasan adalah penyambungan dua buah logam baik dengan atau tanpa tekanan dan dengan atau tanpa tambahan bahan. Dari beberapa jenis las ada salah satu jenis yaitu las shielded metal arc welding (SMAW) yang sering di gunakan pada kegiatan pengelasan. Tujuan di adakan penelitian ini adalah untuk mengetahui efektifitas penggunaan elektroda pada pengelasan SMAW dengan menggunakan Marin plate dengan menggunakan Variasi elektroda dan kekuatan sambungan las. Metode yang di pakai dalam penelitian ini adalah dengan pengujian Tarik yang di lakukan di Lab Teknik Mesin UNWAHAS, dari hasil data yang didapat dan setelah proses pengolahan data di peroleh hasil bahwa terdapat pengaruh yang signifikan pada variasi kekuatan Tarik sambungan las, dan pada variasi penggunaan elektroda RB-26 dan LB-52 tidak ada pengaruh yang siknifikan serta hasil yang terahir adalah terdapat pengaruh yang siknifikan pada kombinasi penggunaan kedua variasi tersebut.
Damage Analysis Of Turbo Charger On Main Engine at KM. LEUSER Andi Hendrawan; Lusiani; Aji Kusumastuti Hendrawan; Sri Pramono
Nama Jurnal Akmi Vol 5 No 1 (2023): Jurnal Sitektransmar Mei 2023
Publisher : LPPM AKMI SUAKA BAHARI CIREBON

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51578/j.sitektransmar.v5i1.63

Abstract

A centrifugal compressor known as a turbocharger is powered by a turbine powered by exhaust fumes from moving vehicles. Usually used in internal combustion engines to increase the air pressure entering the engine and increase engine efficiency. The main benefit of turbochargers is that they provide a significant increase in engine power for just a little extra weight. The research was carried out by direct observation and then recorded the damage that occurred. The results show that damage to the turbocharger includes damage to rotation, damage to the bearings, and damage as a result of the main engine. To avoid damage, adequate maintenance is needed so that ship components will last longer.
The Analisa Performa Mesin Diesel Kapal S6S Dengan dan Tanpa Turbocharger Berdasarkan Data Operasional Sri Pramono; Riyanto Wibowo; Panut Widodo; Imam Maulana I; Guntur Aditya P
Marine Science and Technology Journal Vol 7 No 1 (2026): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v7i1.4377

Abstract

S6S in conditions with and without a turbocharger based on actual operational data. This study is motivated by the importance of understanding the performance of marine diesel engines in supporting operational efficiency, fuel economy, and the reliability of ship machinery systems. The methods used in this study included collecting engine operational data, such as engine speed, power output, fuel consumption, and engine operating conditions in both configurations. The data obtained were then analyzed comparatively to determine the effect of turbocharger use on engine performance. The analysis results indicate that the use of a turbocharger in an S6S marine diesel engine can increase power output and combustion efficiency, as well as reduce specific fuel consumption compared to the unturbocharged condition. Conversely, the unturbocharged engine demonstrated lower performance at certain workloads, making it less optimal for ship operations. Through this research outreach activity, it is hoped that participants will gain a better understanding of the role of turbochargers in improving marine diesel engine performance. The results of this study can serve as a reference for students, technicians, and marine machinery practitioners in efforts to optimize the operation and maintenance of marine diesel engines.
Co-Authors Ahmad Torkis Pangidoanta Aji Kusumastuti Hendrawan Andi Hendrawan Guntur Aditya P Imam Maulana I Leonardus Heru Pratomo Lusiani Lusiani Panut Widodo Riyanto Wibowo Suyanto Suyanto Syahrozi