Analisis Teknis Penerapan Sistem Organic Rankine Cycle (Orc) Untuk Pemanfaatan Panas Buang Mesin Diesel Pada Kapal Ikan

Syachrizal, Haretnanta Sudibyoko (2026) Analisis Teknis Penerapan Sistem Organic Rankine Cycle (Orc) Untuk Pemanfaatan Panas Buang Mesin Diesel Pada Kapal Ikan. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 04211940000077_Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (3MB)

Abstract

Penelitian ini bertujuan merancang dan menganalisis sistem Organic Rankine Cycle (ORC) untuk memanfaatkan limbah panas gas buang dari mesin diesel kapal berdaya 300 kW. Menggunakan fluida kerja R1233zd(E) yang ideal untuk aplikasi temperatur rendah hingga menengah, analisis termodinamika dilakukan pada kondisi suhu gas buang masuk 320°C dan dibatasi hingga 190°C saat keluar. Parameter operasi utama sistem ini ditetapkan pada temperatur evaporator 112°C, temperatur kondensor 45°C, serta derajat superheat pada inlet expander sebesar 15°C.
Hasil perhitungan menunjukkan bahwa sistem ORC yang dirancang mampu menghasilkan daya bersih sebesar 4,49 kW dengan efisiensi termal mencapai 8,98% dan rasio tekanan siklus 5,33. Selain itu, perancangan awal heat exchanger membutuhkan luas area perpindahan panas sekitar 5,5 m² dengan penurunan tekanan gas buang yang tetap berada dalam batas aman operasi. Berdasarkan temuan tersebut, sistem ORC ini terbukti berpotensi untuk mengonversi panas sisa menjadi tambahan daya listrik secara efektif tanpa membebani atau mengganggu kinerja utama mesin kapal.
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This study aims to design and analyze an Organic Rankine Cycle (ORC) system to utilize exhaust gas waste heat from a 300 kW marine diesel engine. Utilizing R1233zd(E) as the working fluid, which is ideal for low-to-medium temperature applications, a thermodynamic analysis was conducted with an exhaust gas inlet temperature of 320°C and an outlet temperature limited to 190°C. The main operating parameters of the system were established at an evaporator temperature of 112°C, a condenser temperature of 45°C, and an expander inlet degree of superheat of 15°C. The calculation results indicate that the designed ORC system is capable of generating a net power output of 4.49 kW, achieving a thermal efficiency of 8.98%, and a cycle pressure ratio of 5.33. Additionally, the preliminary design of the heat exchanger requires a heat transfer area of approximately 5.5 m², with the exhaust gas pressure drop remaining within safe operating limits. Based on these findings, the proposed ORC system demonstrates significant potential to effectively convert waste heat into supplementary electrical power without burdening or disrupting the main performance of the marine engine.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Organic Rankine Cycle, exhaust gas, marine diesel engine, R1233zd(E), waste heat recovery.
Subjects:	V Naval Science > VM431 Fishing boats
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Syachrizal Haretnanta Sudibyoko
Date Deposited:	04 Aug 2026 02:27
Last Modified:	04 Aug 2026 02:27
URI:	http://repository.its.ac.id/id/eprint/142726

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