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Benny L Maluegha
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Automotive Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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EFEKTIVITAS PENUKAR KALOR TIPE PLATE P41 73TK Di PLTP LAHENDONG UNIT 2 Harlan Egeten; Frans Palobo Sappu; Benny L Maluegha
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 3 No. 1 (2014): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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Abstract

One way to keep a plant operate optimally is keeping the effectiveness of the components properly. One of the components used in the production process is heat exchanger. In PLTP Lahendong unit 2 is used as a the cooler lubricant system of generator and turbine is using type of plate P41 73TK heat exchanger.This research objective is to determine the effectiveness of the heat exchanger plate type PLTP Lahendong P41 73TK. Calculation are using formulas that correspond to the type of heat exchanger plate and plate heat exchanger assuming that analyzed as a tube.Results of the calculations shows that the effectiveness of plate heat exchanger on the methods of LMTD is 83,3%, obtained by the thermal heat exchanger effectiveness of 55.6% and effectiveness based on method of NTU is 30.3%.Keywords : Effectiveness, type heat exchanger plate, LMTD method, method of NTU
SIMULASI NUMERIK ALIRAN FLUIDA DALAM PENSTOCK DENGAN MENGGUNAKAN COMPUTATIONAL FLUID DYNAMICS (CFD) Gilang Ramadhan Supit; Hengky Luntungan; Benny L Maluegha
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 3 No. 2 (2014): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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Abstract

Indonesia has a potential water power resources that can be generated into electricity through hydro power plant (PLTA) and micro hydro power plant (PLTM). The water from the reservoir flow down to the turbine in a penstock, therefore the analysis of the characteristics of the fluid flow in penstock is interesting. This research worked out with a simulation to find the characteristics of fluid flow in the penstock using Computational Fluid Dynamics (CFD) by applying software GAMBIT 2.3.16 and Fluent 6.3.26. Penstock dimension was using the data available and was simulating to find out the characteristics of the flow. The dominant fluid flow characteristics are static pressure, dynamic pressure, total pressure, fluid velocity and shear stress. Result show that for static pressure in inlet 305.769,9 Pa, default-interior 305.769,9 Pa, wall 305,769,9 Pa and outlet 300.009,8 Pa. The dynamic pressure in inlet 3.595,365 Pa, default-interior 4.253,647 Pa, wall 3.602,503 Pa and outlet 4.229,900 Pa. The total pressure in inlet 309.365,3 Pa, default-interior 309.365,3 Pa, wall 309.365,3 Pa and outlet 304.235,4 Pa. The velocity of fluid in inlet 2,681554 m/second, default-interior 2,916727 m/second, wall 2,684047 m/second and outlet 2,908574 m/second. The shear stress in inlet 5,175604 Pa, default-interior 9,589236 Pa, wall 9,589236 Pa and outlet 9,518271 Pa. Keywords: Penstock, Computational Fluid Dynamics (CFD), Fluid Flow Characteristics
PERANCANGAN ALAT PENUKAR KALOR TIPE SHELL AND TUBE UNTUK GASOLINE ENGINE CM11-MKII Christian Lasut; Benny L Maluegha; Frans Palobo Sappu
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 11 No. 1 (2022): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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Abstract

Shell and tube is one type of heat exchanger that serves to change the temperature of a fluid. To support the performance of this equipment, proper design and appropriate capcity are needed. The purpose of this research is to make a design of shell and tube heat exchanger on the gasoline engine CM11-MKII.The design of this shell and tube heat exchanger is done by using the Kern method. Kern’s calculation is easier to understand, as the sequence of calculations and formulas used are clearly displayed. The completion stage of the design still uses trial and error methods.The specifications obtained for the inner diameter of the shell are 8 inches with a baffle distance of 6 inches and the number of tracks is 2 tracks. While the specifications for the tube are 16 inches long, 0.584 inches inside diameter, 0.75 inches outside diameter and the number of tracks is 4 tracks.The calculation results using the above specifications obtain a total heat transfer coefficient of 401.71 Btu/hour.ft2. °F, while for the design coefficient of 205 Btu/hour.ft2.°F and the fouling factor that occurs is 0.0023 hours.ft2.°F . The calculations obtained meet the requirements of the shell and tube type APK with water as the working fluid.Keyword: Design, Heat Exchanger, Shell and tube
Co-Authors Christian Lasut Frans Palobo Sappu Gilang Ramadhan Supit Harlan Egeten Hengky Luntungan