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Comparative Analysis of the Amount of Fuel Use for Main Motor 1 in Theory and Reality in the Field During Operation One Trip at KMN. Cahaya Lapawawoi 01 Ade Hermawan; Teguh Binardi; Agustiawan Agustiawan; Samsi Samsi; Priyantini Dewi; Sobri Sobri; Istianto Budhi Rahardja
Journal of Applied Sciences and Advanced Technology Vol 4, No 1 (2021): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.4.1.7-14

Abstract

Ships are units used for transportation, logistics industry, fishing units and so on. In its operations, ships use fuel oil to move and reach their intended destination. The fuel oil used includes heavy fuel oil (HFO), medium fuel oil (MFO), and intermediate fuel oil (IFO). The main factors that affect the high and low use of fuel are rotation (rpm) and also the operating time of the main engine. Flowmeter is a measuring tool to determine the amount of fuel oil consumption in the engine. The function of the flowmeter is to measure the volume of liquid that passes through the device so that the total volume of liquid that enters a container / place or machine is obtained. Flowmeter and Tachometer are very helpful in calculating fuel consumption on board. Basically, with the use of high rotation, it can accelerate the speed of the ship's movement to reach its destination.
ANALISA BEBAN PENDINGIN PRODUK PADA CONTACT PLATE FREEZER TERHADAP KINERJA KOMPRESOR DI PT. TRIMITRA MAKMUR, TARAKAN, KALIMANTAN UTARA Samsi Samsi; Ade Hermawan; Teguh Binardi; M. Ilham; Istianto Budhi Rahardja
Jurnal Teknologi Vol 15, No 2 (2023): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.15.2.207-216

Abstract

Contact plate freezer (CPF) is a refrigeration machine unit to freeze products that will certainly maintain product freshness. The cooling system is running smoothly, one thing that should be noted is the cooling load on the contact plate freezer. Cooling load is the amount of heat absorbed per unit of time. Refrigeration cycle at PT. Trimitra Makmur, using a combined refrigeration cycle (multi-stage cycle), using two vapor compression cycles using two single-stage compressors. The two compressors used have the same power of 55.92 kW. As for the main components of the refrigeration system at PT. Trimitra is prosperous, among others: Compressors, condensers, expansion valves, and evaporators. The cooling load on the contact plate freezer consists of product heat load, water heat load, internal heat load, and transmission heat load. In the contact plate freezer, the load of infiltration or heat from the outside air is not calculated because at the time of production the door of the contact plate freezer is closed tightly so the value of air exchange is very small and can be ignored. In this research, it was found that the average total load on contact plate freezer 1 was 23.07079 kW, so that the average total load on all three contact plate freezers at PT. Trimitra Makmur is 69.21237 kW. From the results of data collection and calculation, the COP value in the high-stage cycle is 4.33, so the power of the high-stage compressor used is 1/4.33 of the cooling capacity of the contact plate freezer. While in the booster cycle, a COP value of 6.49 is obtained, so the booster compressor power used is equal to 1/6.49 of the cooling capacity of the contact plate freezer.
Co-Authors Ade Hermawan Agustiawan Agustiawan Istianto Budhi Rahardja Istianto Budhi Rahardja M. Ilham Priyantini Dewi Samsi Samsi Sobri Sobri