Ilmi, Fauzani Nurul (2016) Desain Tunnel Sistem Pendingin Alami Mesin Induk Dengan Ujung Kerucut Untuk Penambahan Gaya Dorong Pada Kapal Ikan. Undergraduate thesis, Institut Technology Sepuluh Nopember.
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Abstract
Mesin induk pada kapal dilengkapi dengan sistem pendingin.
Tugas akhir ini menganalisa aliran air laut sebagai pendingin air
tawar pada jacket cooling water system pada kapal. Sistem ini
menggunakan lubang tunnel bersudut pada lambung kapal yang
merupakan pengganti fungsi cooler box (heat exchanger) antara air
tawar dan air laut dengan memanfaatkan konveksi alami air laut
ketika kapal melaju dan bantuan impeller ketika kapal dalam
keadaan diam atau manouvering. Penelitian dilakukan dengan
memvariasikan kecepatan kapal, suhu air laut dan luas permukaan
pipa heat exchanger. Kecepatan kapal divariasikan 10,8,6,4,2, dan
0 knot, suhu air laut 25-30oC dan luas permukaan divariasikan
dengan menambah panjang pipa koil dengan diameter pipa tetap,
yakni 0,1356 m2, 0,16956 m2 dan 0,20347 m2. Hasil yang
didapatkan adalah kecepatan kapal tidak berpengaruh besar
terhadap perpindahan panas, namun luas permukaan dan suhu air
laut berpengaruh besar terhadap perpindahan panas. Kemudian
pada sisi keluaran tunnel, diameter diperkecil 50% dan
mengakibatkan kecepatan aliran bertambah dan menambah gaya
dorong hingga 37,18 kN.
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Main engine on the vessel is equipped with a cooling system.
This final project analyze the flow of seawater as a coolant of fresh
water jacket cooling water systems on ships. The system uses an
angled tunnel hole in the hull which is to replace the function of
cooler box (heat exchanger) between freshwater and seawater by
utilizing the natural convection of sea water when the vessel move
forward and use impeller when the vessel is stopping or
manouvering. The study was conducted by varying the speed of the
vessel, the temperature of the sea water and surface of heat
exchanger pipe. Vessel speed is varying about 10,8,6,4,2, and 0
knots, the sea water temperature 25-30oC and surface area of pipe
is varied by increasing the length of the pipe coil with diameter
pipe fixed, ie 0.1356 m2, 0.16956 m2 and 0.20347 m2. The results
obtained are the vessel's speed not affect heat transfer, but the
surface area and the temperature of sea water big influence on heat
transfer. Then on the output side of the tunnel, the diameter is
reduced by 50% and resulted in the flow velocity increases and
adds up to 37.18 kN thrust.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSSP 621.402 5 Ilm d |
| Uncontrolled Keywords: | sistem pendingin, heat exchanger, tunnel, nozzle |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 18 Dec 2019 03:01 |
| Last Modified: | 18 Dec 2019 03:01 |
| URI: | http://repository.its.ac.id/id/eprint/72414 |
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