ANALISA PERFORMANCE SEA WATER COOLING PUMP TIPE NHXL-100X80-7025 PADA MESIN INDUK KANAN KT. BIMA 333

Widiyanto, Hary (2017) ANALISA PERFORMANCE SEA WATER COOLING PUMP TIPE NHXL-100X80-7025 PADA MESIN INDUK KANAN KT. BIMA 333. Diploma thesis, POLITEKNIK PERKAPALAN NEGERI SURABAYA.

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Abstract

ABSTRAK KT. BIMA 333 merupakan kapal tunda milik PT. Pelindo Marine Service yang beroperasi lebih intensif dengan rata-rata jam kerja mencapai 14 jam per hari bila dibandingkan jam kerja kapal tug boat lainnya yang hanya 9 jam per hari. Dengan keintensifan tersebut muncul permasalahan seperti yang dihadapi sekarang yaitu penurunan tekanan aliran air laut dari 0,15 Mpa turun menjadi 0,12 & peningkatan temperatur air laut dari 32 ºC meningkat menjadi 35 ºC pada sisi discharge pompa sea water cooling pump pada rpm 600 mesin induk kanan saat dilakukan sea trial pada bulan Juni 2017. Analisa difokuskan pada penurunan tekanan pada sisi discharge pompa dan peningkatan temperatur sea water cooling yang menuju ke intercooler pada RPM 600 mesin induk kanan saat sea trial. Analisa tersebut berupa perbandingan perhitungan data standart sebelum overhaul dengan data saat sea trial serta penentuan ketercapaian kebutuhan pendinginan udara dari turbocharger ke ruang bakar mesin. Pada tugas akhir ini dilakukan perhitungan head loss, head total pompa, daya pompa, kebutuhan Q kalor & ∆T. Hasil perhitungan membuktikan adanya penurunan daya pompa sebesar 7% (presentase error daya pompa). Penurunan nilai head total pompa dari 42,1881 m menjadi 39,2476 m. Laju perpindahan kalor di intercooler mesin induk kanan dari 796576,58 J/s turun menjadi 443262,953 J/s. Kata kunci : daya, Rpm 600, sea water cooling pump, tekanan, temperatur ABSTRACT KT. BIMA 333 is a tugboat owned by PT. Pelindo Marine Service which operates more intensively with 14 hours per day average working hours than another tug boat that work only 9 hours per day. With this intensity, the problem that facing now is the decrease of sea water flow pressure from 0.15 Mpa to 0.12 & increases of sea water temperature from 32 ºC to 35 ºC on the discharge side of sea water cooling pump in rpm 600 right side main engine during a sea trial in June 2017. The analysis focused on the decline of pressure at the discharge side of the pump and the increasing of sea water cooling temperature leading to the intercooler at RPM 600 of the right side main engine at sea trial. The analysis is a comparison of standard data calculations before the overhaul with data during sea trial and determination of the achievement of air cooling needs from the turbocharger to engine combustion chamber. In this final project, the writer calculate the head loss, pump head total, pump power, Q calority requirements & ΔT. The calculation results prove the decrease of pump power by 7% (percentage error pump power). The decrease in total pump head value from 42.1881 m to 39.27676 m. The rate of heat transfer in the right side main engine intercooler from 796576.58 J / s decreases to 443262,953 J / s. Keywords: power, pressure, Rpm 600, sea water cooling pump, temperature

Item Type: Thesis (Diploma)
Subjects: T Technology > T Technology (General)
Divisions: Jurusan Teknik Permesinan Kapal > Teknik Permesinan Kapal
Depositing User: Unnamed user with email repository@ppns.ac.id
Date Deposited: 20 Sep 2018 03:18
Last Modified: 20 Sep 2018 03:18
URI: http://repository.ppns.ac.id/id/eprint/987

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