Mubarok, Mohammad Syahirul (2018) Analysis of Internal Fin Usage On The Exhaust Gas Pipe Of Main Engine To Increase the Utilization of Waste Heat Recovery For Generating Electricity Using Thermoelectric Generator. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Combustion engine is the most widely used engine type as the ship’s main engine and auxiliary engine. Combustion engine has 30% - 33% efficiency, which mean the heat energy generated from combustion process, only 30% - 33% are converted into mechanical energy or work. 7% - 10% lost due to frictional force, and for about 60% lost as waste heat at cooling system and exhaust gas. Almost 40% from all of heat energy generated will become waste heat at exhaust gas. Ship’s main engine can generate temperature until 300 0C at the exhaust gas. This waste heat can be reused for the other necessary. The heat from exhaust gas can be transferred by conduction and convection. The heat transfer value of conduction process is influenced by the touch surface area (A). Bigger the touch surface area will result bigger heat transfer value. Touch surface area can be added by using addition of fins. There is a research before, which try to find out the effect of internal fin installation for the thermal performance using simulation software. This research is for developing the previous research, where this research will validate the previous research’s result by using calculation and experiment analysis. The experiment is using Kubota RD 85 DI-2S diesel engine, it has 8.5 HP and the maximum RPM is 2200 RPM. From this research, it is known that internal fin installation can increase the heat transfer of the pipe, where the value heat transfer is upset down with the value of thermal resistance. At the same 1.000 RPM, the finned exhaust pipe has 42 K/W thermal resistance, while for the finless pipe is 44 K/W. Besides internal fin installation, the heat transfer also can be increased by increasing the engine RPM. For the finned exhaust pipe, it has 43 K/W thermal resistance at 750 RPM, while at 1000 RPM, it has 42 K/W of heat resistance. From this research also confirming the previous research that thermal performance has directly proportional with the electricity that generated by TEG which is installed at the exhaust gas pipe.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | finned pipe, exhaust gas, heat transfer, waste heat, energy, electricity, thermoelectric generator, efficient, |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers T Technology > TJ Mechanical engineering and machinery > TJ785 Internal combustion engines. Spark ignition T Technology > TJ Mechanical engineering and machinery > TJ935 Pipe--Fluid dynamics. Tubes--Fluid dynamics T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1001 Production of electric energy or power |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Mubarok Mohammad Syahirul |
| Date Deposited: | 28 Jun 2021 07:32 |
| Last Modified: | 28 Jun 2021 07:32 |
| URI: | http://repository.its.ac.id/id/eprint/56367 |
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