Nawawi, Khairudin (2021) Analisis Perencanaan Sistem Desalination Plant Dengan Memanfaatkan Waste Heat Recovery Dari Diesel Generator Set 300 kVA Pada Kapal SAR 80 Meter. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kapal SAR bisa beroperasi cukup lama di tengah laut ketika sedang menjalankan misi. Kebutuhan air tawar untuk para crew di atas kapal menjadi semakin banyak. Sehingga kemampuan menghasilkan air tawar sendiri di atas kapal SAR sangat diperlukan. Pada penelitian-penelitian sebelumnya telah banyak dilakukan perancangan sistem distilasi dengan memanfaatkan energi gas buang dari mesin induk pada kapal penumpang. Namun pola operasi kapal SAR berbeda dengan kapal penumpang, yaitu memungkinkan untuk kapal SAR mematikan mesin induk ketika operasi di tengah laut dan diesel generator set yang selalu aktif dan menyala secara stationary. Pada penelitian ini dilakukan perencanaan sistem desalinasi dengan memanfaatkan energi gas buang dari diesel generator set dengan kapasitas 300 kVA. Suhu gas buang diesel generator set sekitar 500 0C mampu menghasilkan energi sebesar 82.9 kW. Dengan perancangan distiller yang menggunakan prinsip thermal process pada heat exchangers berjenis shell and tube di dalamnya, mampu memproduksi air tawar sebanyak 2.78 Ton/hari. Dari total kapasitas air tawar pada kapal SAR 60 meter, sistem desalinasi yang dirancang mampu memenuhi sekitar 4.6% nya dengan satu genset. Sehingga mampu untuk memenuhi kebutuhan air minum di atas kapal. Dilakukan simulasi dengan software Aspen Hysys untuk mengetahui laju produksi air tawar dan dilakukan perbandingan hasil perhitungan manual dengan hasil simulasi software HTRI terhadap kinerja evaporator dan kondensor distiller. Adapun komponen utama yang diperlukan pada perancangan distiller yaitu evaporator dengan panjang tube 0.75 m dan diameter dalam shell 0.4 m, kondensor dengan panjang tube 0.75 m dan diameter dalam shell 0.134 m, ejector pump dengan kapasitas 5.5 m3/h, dan distillate pump dengan kapasitas 0.1 m3/h.
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SAR vessel can operate long enough in the middle of the sea while on a mission. The need for fresh water for the crew on board is increasing. So that the ability to produce their own fresh water on a SAR vessel is very necessary. In previous studies, distillation systems have been designed by utilizing exhaust gas energy from the main engine on passenger ships. However, the operation pattern of SAR vessel is different from that of passenger ships, in that it is possible for SAR vessel to turn off the main engine when operating in the middle of the sea and the diesel generator set which is always active and stationary. In this study, a desalination system was designed by utilizing exhaust gas energy from a diesel generator set with a capacity of 300 kVA. The exhaust gas temperature of the diesel generator set is around 500 0C capable of producing 82.9 kW of energy. By designing a distiller that uses the thermal process principle on shell and tube type heat exchangers inside, it is capable of producing 2.78 tons of fresh water/day. Of the total fresh water capacity on SAR vessel of 60 meters, the designed desalination system is able to meet about 4.6% with one generator set. So it is able to meet the needs of drinking water on board. Simulations were carried out with Aspen Hysys software to determine the rate of fresh water production and a comparison of the results of manual calculations and the simulation results of the HTRI software on the performance of the evaporator and distiller condenser was carried out. The main components needed in the design of the distiller are the evaporator with a tube length of 0.75 m and a shell inside diameter of 0.4 m, a condenser with a tube length of 0.75 m and a shell inside diameter of 0.134 m, an ejector pump with a capacity of 5.5 m3/h, and a distillate pump with a capacity of 0.1 m3/h.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Desalinasi, Diesel Generator Set, Distiller, Gas Buang, Kapal SAR |
| Subjects: | V Naval Science > VC Naval Maintenance > VC 270-279 Equipment of vessels, supplier,allowances,etc V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM731 Marine Engines |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Khairudin Nawawi |
| Date Deposited: | 26 Aug 2021 15:06 |
| Last Modified: | 26 Aug 2021 15:06 |
| URI: | http://repository.its.ac.id/id/eprint/90130 |
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