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All Journal V-MAC (Virtual of Mechanical Engineering Article) Jurnal Ilmiah Teknik Mesin Poros
Harto Tanujaya
Jurusan Teknik Mesin Fakultas Teknik Universitas Tarumanagara
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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UJI EKSPERIMENTAL MESIN PENDINGIN BERPENDINGIN COOLANT DENGAN MENGGUNAKAN REFRIGERAN R22 DAN REFRIGERAN R407C Fransiskus Xaverius Phie; Harto Tanujaya; Steven Darmawan
Jurnal Ilmiah Teknik Mesin POROS Vol 13, No 1 (2015): Jurnal Imliah Teknik Mesin Poros
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (282.962 KB) | DOI: 10.24912/poros.v13i1.811

Abstract

Abstrak: Salah satu penyebab kerusakan lapisan ozon adalah zat pendingin. Kandungan zat pendingin akan terurai setelah dicampur dengan sinar ultraviolet. Itu juga molekul refrigeran yang tepat yang melepaskan atom klorin. Klorin yang dikeluarkan akan menghancurkan lapisan ozon dan tingkat sinar ultraviolet yang masuk ke bumi yang lebih tinggi. Tapi tidak semua jenis zat pendingin mengandung klorin. Jenis zat pendingin yang biasa digunakan pada pendingin mesin adalah R22. Refrigeran mengandung unsur klorin sehingga perlu memeriksa penggantian refrigeran R22. Jenis zat pendingin yang memiliki kesamaan namun tidak mengandung unsur klorin adalah zat pendingin R407c. Penelitian dilakukan dengan mengambil beberapa data dari kedua jenis refrigerant tersebut. Tujuan dari penelitian ini adalah untuk menghitung laju kondensor perpindahan panas, kompresor pendingin, kapasitas daya dan koefisien kinerja setiap refrigeran. Penelitian dimulai dengan belajar tentang siklus kompresi uap, komponen utama dari pendingin mesin, sifat refrigeran, dan konsep pendinginan. Pengambilan data tekanan, suhu, dan arus listrik kuat berdasarkan debit 20 liter / jam, 40, 80, dan 120. Air pendingin kondensor menggunakan jenis pendingin, air dan udara. Data yang telah diambil akan dihitung dengan menggunakan rumus sistem pendingin. Pada refrigeran air dingin berpendingin pendingin R22 dengan koefisien perfomance lebih besar dari R407c. Pada nilai alir 40 l / h R22 adalah 6,58 Kata Kunci: Refrigeran, klorin, koefisien kinerja, dan efisiensi 
ANALISIS PERBANDINGAN KINERJA PERANGKAT BAHAN BAKAR PLTN TIPE PWR AP 1000 DAN PWR 1000 MWe TIPIKAL DENGAN MENGGUNAKAN PROGRAM KOMPUTER Arif Nurmawan; Suroso Suroso; Harto Tanujaya
Jurnal Ilmiah Teknik Mesin POROS Vol 12, No 1 (2014): Jurnal Ilmiah Teknik Mesin POROS
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (342.828 KB) | DOI: 10.24912/poros.v12i1.677

Abstract

Abstract: Investigation of fuel element thermal-hydraulic characteristic is important step related to aspect of fuel bundle reactor design. This paper analyzes of the PWR AP1000 and PWR 1000 MWe Typical of fuel bundle thermal-hydraulic using RELAP5 code. Choosing PWR AP 1000 and PWR 1000 MWe Typical because the both of them have almost same power that is 3400 MWth and 3410 MWth but have differences on fuel bundle sum, the high of active core, and rod diameter. On the fuel bundle, there are 17x17 fuel rods that have a radial factor the power varies. Modelling of fuel bundle are divided into 4 channel groups, ie. power factor of 1.396, range power factor of 1.203 to 1.394, power factor of le then 1.198 down and bypass channel. Axially, the channels are divided into 3 zones there are stand-off assembly at the bottom, an active length of the channel and the zone of upper plenum. The active length divided into 10 axial nodes. The goal of this analysis is fuel bundle design validation of PWR AP 1000 and PWR 1000 MWe Typical and get thermal-hydraulic comparison for steady-state condition. The analysis result including cooling floe rate, axial temperature distribution of cladding and cooling temperature, heat flux and pressure drop. In steady condition, the model was verified with the parameter of AP-1000 and PWR 1000 thermal-hydraulic design in which shows a good agreement. Verification results show that the model is made still need refinement, however qualitatively within realistic limits. Further updating of the model will be done to get a better verification results. 
UJI EKSPERIMENTAL MESIN PENDINGIN BERPENDINGIN UDARA, DENGAN MENGGUNAKAN REFRIGERAN R22 DAN REFRIGERAN R407C Kevin Sanjaya; I Made Kartika; Harto Tanujaya
Jurnal Ilmiah Teknik Mesin POROS Vol 12, No 2 (2014): Jurnal Ilmiah Teknik Mesin POROS
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (441.775 KB) | DOI: 10.24912/poros.v12i2.565

Abstract

Abstract: Refrigerant R22 can cause ozone layer depletion so that required refrigerant substitute for R22. Refrigerant R407C is one of the refrigerant substitute for R22. Research of refrigerant in the cooling engine with air-cooled condenser is done by experimental methods. This research was conducted using refrigerants R22 and refrigerant R407C with a flow rate of 20 L /h, 40 L/h, 80 L/h and 120 L/h. Test data processing include the calculation of refrigeration capacity, compressor power and COP values. COP or Coefficient Of Performance shows the efficiency of the refrigerant. The best COP values are in the refrigerant flow rate of 40 L/h, with R22 COP value of 5.818 and R407C COP value of 4.875. 
UJI EKSPERIMENTAL MESIN PENDINGIN BERPENDINGIN AIR DENGAN MENGGUNAKAN REFRIGERAN R22 DAN REFRIGERAN R407C Terry Gunawan; Harto Tanujaya; Asrul Aziz
Jurnal Ilmiah Teknik Mesin POROS Vol 12, No 2 (2014): Jurnal Ilmiah Teknik Mesin POROS
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (253.95 KB) | DOI: 10.24912/poros.v12i2.570

Abstract

Abstract: The human needs of refrigeration system have created a tool that called a refrigerator. Refrigerator/cooling machine have a component which have a very important role in the refrigeration system that is refrigerant. Refrigerant that still widely used for cooling machine until now is the refrigerant R22. Using R22 refrigerant can cause environmental problems such as damage to the ozone layer and global warming. Therefore, it needs a substitution refrigerant which is more friendly for environment which one of them is R407C refrigerant. In this study, using a cooling machine with water- cooled condenser and the flowrate that use is 20 L/h, 40 L/h, 80 L/h and 120 L/h. The variables that measured in this study is temperature (T1, T2, T3, T4, T10, T11), pressure (P1, P2, P3, P4), and ampere. This study aims to get the test results using refrigerants R22 and R407C. The processing data of the test result include refrigeration capacity, compressor power and COP. The results obtained have that cooling machine which use R22 refrigerants have a better COP than using R407C refrigerant. This is happen because the power needed by the compressor to compress R407C refrigerant to flow in the system is greater than using R22 refrigerant. 
ANALISA PENGARUH PENAMBAHAN THERMAL ENERGY STORAGE PADA PEMANAS AIR TENAGA SURYA TIPE PLAT DATAR Maharuli Maharuli; I Made Kartika; Harto Tanujaya
Jurnal Ilmiah Teknik Mesin POROS Vol 14, No 1 (2016): Jurnal Ilmiah Teknik Mesin POROS
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/poros.v14i1.830

Abstract

Abstract: Solar energy, the renewable energy is only available at certain hour. So it is essential to develop efficient, economical solar thermal energy storage. Thermal energy storage (TES) systems provide several alternatives for efficient energy use and conservation. Phase change materials (PCMs) for TES are materials supplying thermal regulation at particular phase change temperatures by absorbing and emitting the heat of the medium. TES in general and PCMs in particular, absorb energy during the heating process as phase change takes place and release energy to the environment in the phase change range during a reverse cooling process. PCMs possesses the ability of latent thermal energy change their state with a certain temperature. Paraffin is the PCM used in this research. Paraffin is being added to a solar water heater to store thermal energy at daylight and supply the stored energy to the heat pipe when the sundown. From this research, it is found that the solar water heater with paraffin need longer heating time than the conventional solar water heater but it could provide steadier heating performance and warm water even when the sun was down. 
ANALISIS KEKUATAN RANGKA BATANG KOMPONEN MESIN PRESS KEMASAN MINUMAN LOGAM NON FERRO Mikael Sean Hendito; Daniel Joachim; Harto Tanujaya; Sobron Yamin Lubis
POROS Vol. 17 No. 2 (2021): Jurnal Ilmiah Teknik Mesin Poros
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/poros.v17i2.20044

Abstract

Beverage cans is a sheet coated of steel with tin (Sn). It is a steel sheet container coated with thin white tin that has a content value of 1.00% to 1.25% of the total weight of that can. The method used in this design is to make a truss design using special design software then determine the constituent materials and dimensions of the truss then do a strength analysis of the truss. The purpose of this design is to determine the maximum strength of the press machine truss that can be accepted with a certain force. This design starts from making a truss design with dimensions of length, width, and height are 260 mm, 100 mm, and 500 mm, respectively. The result obtained from this design are that the bending moment obtained is 43.8 MPa, the total moment of inertia is 38,286.9 mm4, the maximum stress in the truss is 23 MPa while the allowable stress according to the frame material made of Hollow iron is 124 MPa.
Analisis Perubahan Kekerasan Material Terhadap Pembubutan Ber Budi Wicaksono; Rosehan; Harto Tanujaya
Virtual of Mechanical Engineering Article Vol 9 No 2 (2024): V-MAC
Publisher : Prodi Teknik Mesin Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/v-mac.v9i2.3967

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh kecepatan potong (Vc) terhadap kekerasan (Hb) material dalam proses pembubutan. Metode penelitian melibatkan pengujian kekerasan material pada berbagai kecepatan potong yang telah ditentukan. Hasil penelitian menunjukkan bahwa kecepatan potong memiliki pengaruh signifikan terhadap kekerasan material. Semakin tinggi kecepatan potong, semakin tinggi nilai kekerasan yang dihasilkan. Nilai kekerasan tertinggi yang diperoleh adalah 203.23 Hb pada kecepatan 175.84 m/min, sedangkan nilai kekerasan terendah adalah 174.2 Hb pada kecepatan potong 203.23 m/min. Perubahan kekerasan ini disebabkan oleh perubahan deformasi dan pengaruh dari gaya geser yang terjadi selama proses pembubutan. Kesimpulan dari penelitian ini menunjukkan bahwa pemilihan kecepatan potong yang tepat sangat penting dalam mengoptimalkan kekerasan material dalam proses pembubutan.
Co-Authors Arif Nurmawan Asrul Aziz Ber Budi Wicaksono Daniel Joachim Fransiskus Xaverius Phie I Made Kartika Kevin Sanjaya Maharuli Maharuli Mikael Sean Hendito Rosehan Sobron Yamin Lubis Steven Darmawan Suroso suroso Terry Gunawan