Projek Priyonggo Sumangun L
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RANCANG ULANG SISTEM PENDINGIN PADA MESIN FREEZER MULTIFUNGSI Mukhammad Zidan N; George Endri Kusuma; Projek Priyonggo Sumangun L
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2429

Abstract

Previous research was the beginning of the manufacture a multifunctional freezer, a machine that has two functions for cooling and drying and is aimed at preserving fish both dried and cooled. The evaporator on the machine is used for cooling the fish in the refrigerator. The cooling process has a weakness in the cooling system where the temperature in the chamber can’t reach a temperature below 0°C when the load is given above 0,5kg, and its cooling rate is less efficient so that the process of temperature reduction in a chamber given the load variation has a long enough time, so it can be concluded that the performance of the chiller is less optimal. In this final project, a cooling system redesign is carried out on a multifunctional freezer machine, as well as a capillary tube with a diameter of 0,31 inches and a length of 1,5 meters. Test results were obtained with weight variations of 0,5kg, 2kg, and 3kg. Average cooling speed of 0,255 kJ/s, chill room temperature of 2,7°C to -6°C, and the best coefficient of performance are obtained from the test results at a weight of 3kg with a COP value of 6,609 at 30 minutes and 5,133 at a test time of 60 minutes or 1 hour of operation of the multifunction freezer.
Perencanaan Sistem Perpipaan Pemadam Kebakaran pada Galangan Kapal dengan Luas Area 114.389 m2 Tubuh Pierehanto; annas Firmansyah; Projek Priyonggo Sumangun L; Lely Pramesti
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2442

Abstract

Fires can occur anywhere and anytime, including shipyards. Fires in shipyards can cause companies to incur repair costs, recover company assets, and provide insurance for victims. The existing extinguishing system is still simple and does not cover the entire area. Therefore, it is necessary to plan a fire extinguishing system with NFPA and SNI standards that can cover all areas of the company. The initial planning step is to design the pipeline system, then select pumps, calculate pipe support requirements, and calculate estimated material costs. This research resulted in a total head using pipe flow expert software of 210.114 m. The percentage of errors between manual calculations and software is 3.363%. The need for pipe support for an 8-inch pipe requires a minimum of 1 support, while a 6-inch pipe requires a minimum of 71 supports. So, theestimated cost of materials and equipment in this plan is IDR 3,443,630,750.