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Saputra, Rudi
FKIP Unila
Electrical & Electronics Engineering Engineering

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ANALISIS PENGARUH PENYERAPAN KALOR TERHADAP EFISIENSI COOLING TOWER PADA TUNGKU INDUKSI PENGECORAN LOGAM DI POLMAN ASTRA Komarudin, Komarudin; Saputra, Rudi; Baskoro, Satriyo Yudi
Bina Teknika Vol 13, No 1 (2017): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

In the process of inducing metal, coil receives heat from the molten metal (molten). Therefore, it takes a cooling medium flowing in the coil casing and has a good conductivity. So here media of cooling tower water is used, so the water temperature can be maintained at the ambient air wet bulb temperature. With the optimal heat absorption cooling tower efficiency can be maintained. Besides, the material aluminum / molten can be melted well as the process of inducing metal running perfectly and there is no buildup of material on the walls of the furnace. With the application of a double pump with the series circuit to increase the water flow rate and can boost the absorption of the heat from the furnace wall and the pipe to the water coil.
PERANCANGAN ULANG SISTEM HVAC PADA GEDUNG PERKANTORAN X DI JAKARTA DENGAN METODE CLTD Faizal, Mohamad; Saputra, Rudi
Bina Teknika Vol 12, No 1 (2016): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

HVAC system ( Heating Ventilating and Air Conditioning ) is a system that serves to organize temperatures and humidity the air on a room , that feels comfortable condition. In redesigned system HVAC to 8 floors office buildings , by using CLTD method ( cooling load temperature difference ), where the state of temperature design at 73,4 and 50% moisture. Existing cooling load 8.880.000 BTU/hr and air supply existing of 264.180 CFM. Redesigned calculation of cooling load is 11.626.701 BTU/hr ,where there is increased by 30.9 %, and obtained needs air supply of 343.456,73 CFM and increased by 30 %. Chiller system installation at the building using air cooled chiller , existing chiller using four chiller units of 250 tons refigerant each and one units for back up. Based of calculation obtained chiller capacity is 969 tons refrigerant, so that four units chiller available must in operates with 17 Air Handling Unit (AHU) to be optimum cooling,with dimension ducting 35 in the largest and smallest 9,5 in.
PERBANDINGAN KEKERASAN DAN STRUKTUR MIKRO PEGAS DAUN YANG MENGALAMI PROSES HEAT TREATMENT Saputra, Rudi; Tyastomo, Estu
Bina Teknika Vol 12, No 2 (2016): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Leaf spring is a component that functions to receive dynamic load and provide comfort in driving. Leaf springs are commonly used small public service vehicles and small commercial vehicles are deteriorated mechanical properties prior to the age limit of leaf springs. To restore the mechanical properties of the spring there will be a heat treatment that includes heat treatment of cooling (quenching) .From Hardness Vickers hardness test results on steel leaf springs are associated with an increase of hardness, on the condition of normal leaf spring steel without heat treatment hardness obtained average price of 325 , on the condition of the leaf spring steel with heat treatment at a temperature of 8000C with cooling oil obtained average price of 380, on the condition of the leaf spring steel with heat treatment at a temperature of 8000C with air cooling average price obtained - average of 339, from the test results of metallographic condition microstructure on the leaf spring normally with no warm-up run into the matrix pearlitic and at the side there sulfide / impurities formed by sulfur, the results of tests metallographic condition of microstructure on the leaf spring that is experiencing warming with quenching oil in the form of a matrix martensitic and at the edges of experience decarburization , austenitic microstructure form, the results of tests metallographic condition of microstructure on the leaf spring is warming by cooling the air in the form of a matrix perlitic middle and at the edges of experience decarburization micro-structure in the form of ferrite-pearlite.
PERANCANGAN ULANG TURBIN KAPLAN POROS VERTIKAL DI PLTM PLUMBUNGAN Saputra, Rudi; Liichan, Taff
Bina Teknika Vol 14, No 2 (2018): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Hydroelectric Power Plants (PLTA) in Indonesia have been around since 1926, and are still operating today. The Indonesian government represented by PT. PLN (State Electricity Company) will continue to maintain, operate and maintain old hydropower plants. So far, the development and development of PLTMH in Indonesia still uses consultants / contractors and its manufacturing is from overseas, even components (spare parts) are also still dependent on the technology producers themselves, the majority of which are foreign countries. Imports cannot be avoided, this results in us being vulnerable to several things, fluctuations in foreign exchange rates, and dependence on foreign producers. But with the increasing understanding of national resilience, especially in terms of national industrial independence, several national companies began to carry out reconstruction and fabrication for hydroelectric power plants. This is encouraging the author to learn to know, understand, how to plan the main parts of the Kaplan Turbine which include: runner, shaft, spiral casing, stacker, draft tube. In this plan the author focuses on calculating the main dimensions of the Kaplan Turbine. From the results of the design and calculation, the appropriate type of turbine is Kaplan Turbine as an electric generator drive in Plumbungan PLTM with installed power of 1.2 MW, maximum head of 21.16 meters and water discharge requirement of 7.68 m3 / sec. Plumbungan PLTM installation consists of turbines, turbine supporting equipment, and turbine operation aids. The turbine installation component consists of: suction pipe (penstock), turbine house (spiral casing), runner, runner shaft, shaft support bearing and draft tube.
ANALISIS KESEIMBANGAN LINTASAN UNTUK MENINGKATKAN PROSES PRODUKSI PADA AIR MINERAL DALAM KEMASAN Ahyadi, Harwan; Saputra, Rudi; Suhartanto, Eko
Bina Teknika Vol 11, No 2 (2015): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Production is an economic activity that adds value by creating and providing goods and services, the creation of products or services and at the same time the creation of value. In economics, production is the act of creating the output, goods or services that have value and contribute to individual utilities.Production line balancing is a very important thing in planning production. Expected to regulate the flow of process efficiency can be achieved optimum production. In addition, the accumulation of intermediate goods from one machine to another machine, thus resulting in increased balance delay. In the process of making drinking water should be done step-by-step production process is handled hygienically, because bottled water products consumed directly by the human body. Drinking water production capacity is 5250 bottles per day, equivalent to 218 boxes, but the target is the company charged, equivalent to 7000 bottles of 291 boxes per day. With the method of determining the regional approach has obtained the standard time of each process for each work station and increase worker productivity, increased production capacities of 218 boxes / day to 295 boxes / day after the repair, companies gain efficiency by 35%
PERANCANGAN INSTALASI TATA UDARA RUANG BERSIH AREA PENIMBANGAN PADA INDUSTRI FARMASI KELAS E Saputra, Rudi; Abdunnaser, Abdunnaser
Bina Teknika Vol 14, No 1 (2018): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Cleanroom in the pharmaceutical industry is needed to eliminate a wide range of contamination, due to the room around the building materials, machinery equipment production, human and others generate millions of particles that can interfere with the quality of manufactured drugs. Cleanroom in the pharmaceutical industry is based on the ISO 14644-1 standard that is in a class of E (100.000), which can be interpreted very clean conditioned room to awake from particles and microbial contamination. The number of particles in the E (100.000) class at the size of 0,5 µm limited number of 3520000 particles/m3 were obtained from the results of the design of 446771,3769 particles/m3, for a particle size of 5 µm particle number 29000 particles/m3 is obtained by 47760,7813 partikel /m3. Raw material weighing room temperature in the desain room 21 ºC and 40% RH, and the outside temperature is 32,72 ºC and 72,77% RH. The results obtained design cooling load is 17329,077 Watt, with velocity distribution of air in the airway of 0,118 m/s in air requirement of 99,615 l/s, so that the requirements for class E (100.000) according to ISO 14644-1 to the mixed flow of air velocity.
ANALISIS TEGANGAN CONNECTING ROD PADA MOBIL TIPE X DENGAN MENGGUNAKAN METODE NUMERIK Saputra, Rudi; Nurzaen, Hudha
Bina Teknika Vol 13, No 2 (2017): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Kemajuan teknologi sekarang ini telah menghasilkan berbagai kreasi dalam segala hal yang bertujuan memudahkan segala aktifitas manusia. Ada berbagai sarana transportasi tersedia, mulai dari darat, udara, dan laut. Kendaraan yang diproduksi massal di negara kita umumnya kendaraan darat, salah satunya adalah kendaraan roda empat yaitu mobil.Connecting rod merupakan komponen mesin yang berperan untuk mengubah gerakan resiprok (maju mundur/turun naik) piston menjadi gerakan berputar (rotary) pada poros engkol. Dalam tugas akhir ini, menganalisa distribusi tegangan connecting rodpada mobil dengan menggunakan metode elemen hingga.Connecting rod yang dianalisa adalah connecting rodmobil dengan 1500 CC. Adapun material dari connecting rod ini ialah AISI 1045 cold drawn dengan kekuatan luluh (σy) sebesar530 N/mm2.Tujuan tugas akhir ini adalah untuk menganalisa tegangan yang terjadi pada connecting rod setelah dipengaruhi oleh tekanan statis. Setelah itu mencari nilai tegangan Von Mises yaitu tegangan maksimun dan tegangan minimum untuk mengetahui connecting rod ini dalam keadaan aman atau tidak dengan bantuan dari software Solidworks 2014. Setelah dilakukan analisa didapat bahwa tegangan Von Mises maksimum yang terjadi yaitu sebesar 39,74332 N/mm2 dan tegangan Von Misesminimum yang terjadi yaitu sebesar 0,00169 N/mm2. Dari hasil tersebut dapat dilihat nilai tegangan Von Mises berada di bawah batas izin tegangan yield material baja AISI 1045 sehingga connecting rod ini dapat dikatakan dalam keadaan aman.
Co-Authors Abdunnaser Abdunnaser, Abdunnaser Baskoro, Satriyo Yudi Harwan Ahyadi, Harwan Komarudin Komarudin Liichan, Taff Mohamad Faizal, Mohamad Nurzaen, Hudha Suhartanto, Eko Tyastomo, Estu