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All Journal JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Jurnal Tunas Jurnal MESIL (Mesin Elektro Sipil) JiTEKH (Jurnal Ilmiah Teknologi Harapan) Jurnal SImetri Rekayasa Blend Sains Jurnal Teknik Prosiding Seminar Nasional Teknik UISU (SEMNASTEK)
Din Aswan Amran Ritonga
Program Studi Teknik Mesin, Fakultas Teknik dan Komputer, Universitas Harapan Medan
Arts Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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Journal : Jurnal SImetri Rekayasa

 1 
PENENTUAN WAKTU PREVENTIVE MAINTENANCE TURBIN DENGAN METODE CRITICALITY ANALYSIS PADA PLTA SIPANSIHAPORAS din aswan ritonga
Jurnal Simetri Rekayasa Vol 1 No 2 (2019): Edisi November
Publisher : Universitas Harapan Medan

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Abstract

Population and economic growth makes electricity energy needs in Indonesia continue to increase every year. Based on the assumption of an average national economic growth growing at 6.1 percent per year and national population growth growing at 1.3 percent per year, according to the national electricity general plan for 2012-2031 Indonesia's average electricity demand is estimated at 11% per year. Increased electricity demand PT PLN (Persero) to be able to meet the needs of the community for electrical energy. Problems that arise in the company are specifically related to damage to the components in the Sipansihaporas hydropower unit which are composed of the main parts, namely turbines and generators. Damage to that section can result in downtime and delay in the production process which results in less effective and efficient machine performance. Effectiveness in the production process needs the right strategy to maintain the machine to operate is by determining the optimal maintenance time interval (Maintenance) of the equipment by using the criticality analysis method. After calculating the criticality analysis method, it was found that the guide vane and runner components are critical components. Furthermore, preventive replacement measures for the guide vane component can be carried out after operating for 4200 hours. The Runner component can also be performed after operating for 15800 hours or during overhaul. While the inspection action for the Guide vane component is performed after operating for 250 hours, the Runner component is carried out after operating for 1200 hours. After checking and checking the Avaibility value of the two components is above 95%
ANALISA PERBANDINGAN KONSUMSI LISTRIK PADA AC SPLIT1 PK MENGGUNAKAN FREON R32, R410A, DAN MC-22 Din Aswan Ritonga; Muhammad Ilham; Ade Irwan
Jurnal Simetri Rekayasa Vol 2 No 2 (2020): Edisi Oktober 2020
Publisher : Universitas Harapan Medan

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One of the points stated in the Montreal and Kyoto protocol (1897 & 1997) is the elimination of the use of R-22 refrigerant (HCFC-22) and changing it with environmentally friendly refrigerants. The alternative is hydrocarbon refrigerants, which have been known since the early 1920s in refrigeration technology with other natural working fluids such as ammonia and carbon dioxide. One of the hydrocarbon refrigerants used in this study is Musicool (MC), which is produced by Pertamina's Processing Unit III Plaju. The purpose of this study was to determine the comparison of electrical energy consumption of AC Split 1 PK using 3 types of freon, namely R32, R410A, and MC22. The variables measured in this study were the working pressure of the refrigerant at the intake side of the compressor, voltage, electric current, and the testing time for 1 hour. Based on the analysis, it is obtained that the average split AC electricity consumption using freon R32 is 711.85 W, using R410A freon is 746.17 W, and using MC22 freon is 429.80 W. 301.85 kJ / kg, using R410A freon of 206.77 kJ / kg, using MC22 freon of 349.16 kJ / kg. The COP and EER AC Split values ​​are average using the R32 freon the COP value is 3.71 and the EER is 12.64, using the R410A freon the COP value is 3.55 and the EER is 12.09, and using the MC22 freon the COP value is 6.14 and EER of 20.94.
Analisis Perancangan Pompa Dan Impeller Untuk Kebutuhan Air Bersih Di UPT Pengelola Rusunawa Kayu Putih Ari Riswandi; Din Aswan Amran Ritonga; Muhammad Fadly Kurniawan
Jurnal Simetri Rekayasa Vol 3 No 1 (2021): Edisi April 2021
Publisher : Universitas Harapan Medan

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Clean water is one of the primary needs for human life, the need for clean water in a building is an essential tool that the building management must take into account, and so this is an aspect of what the residents are concerned about. At building A and B in UPT. The management of The wood Rusunawa was drawn to average water capacity of 49 LPM for both buildings. And done a total head figure of 116,27 m based on the length of the pipe and the losses, then can be determined by each of the motor’s power by calculating safety factor 1,15. Pump A and B efficiency value is 35%. It may be concluded that the pump’s efficiency was taken to ensure that its safety factor would be high. So it comes from an impeller counting design is in diameter 0,137 mm) and out diameter ( 0,216 mm) 11 ( 62 , ( 25 ( 20 ) ( 33) mm and all sudu (z = 11). With the pumps specs used as input which is the speed of the motor = 2980 (Rpm), The level od sudu = 5 mm, and the level of shaft (S45C) = 58 Kg/ .
KEKERASAN MATERIAL BAJA KARBON RENDAH DENGAN METODE ROCKWELL Junaidi Junaidi; Din Aswan Ritonga
Jurnal Simetri Rekayasa Vol 1 No 2 (2019): Edisi November
Publisher : Universitas Harapan Medan

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Abstract

The development of technology is now so fast over time to help facilitate activities. The world of machinery has a very important role in the development of technology that exists today, on the one hand as a producer of new existing technology and the other hand as a consumer who needs technology in the production process.This research continues to be carried out to produce new technology with the aim of improving human welfare and making it easier for humans to do something. One way to determine the strength or toughness of a material and as a support for the specifications of a material is to use an impact test. Heat Treatment is one of the processes that play a role in the Manufacturing Industry with the aim of Mantenance Process and Production Process.Therefore in this study will be carried out a hardness test analysis of Low Carbon steel material with the Rockwell Method.
OPTIMASI KINERJA TURBIN PELTON RESPON KEMIRINGAN BUCKET Din Aswan Ritonga; Junaidi Junaidi; Rizky Gunawan
Jurnal Simetri Rekayasa Vol 2 No 2 (2020): Edisi Oktober 2020
Publisher : Universitas Harapan Medan

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Abstract

Water is a source of energy that can be used as a power plant by utilizing its potential power. Hydroelectric power plant (PLTA) is a technology that has been proven to be environmentally friendly and does not damage the environment. The use of the turbine depends on the potential head it has. As in this case the Pelton turbine which uses the impulse principle requires a fairly high head. This type of turbine works by utilizing falling water or head, flow velocity, blade angle, number of nozzles, flow size and number of blades. Pelton turbine testing with several combinations of parameters including: nozzle diameter, number of nozzles, number of blades, and blade slope. Optimization analysis using Statistical Software. Based on tests or research conducted on Pelton turbines by varying the bucket slope, number of buckets, diameter of nozzles and number of nozzles using the Taguchi method, it can be concluded that the efficiency of the turbine using 2 nozzles that have been managed for maximum turbine efficiency is produced with a power of 460 watts with efficiency of 28%, found at a bucket slope of 80 at a nozzle diameter of 19 mm. While the maximum turbine efficiency is generated with a power of 220 watts at a bucket slope of -80 with a turbine efficiency of 6% at a nozzle diameter of 25 mm. The maximum output power of the Pelton turbine is by testing using 2 nozzles with a water flow of 375 l/minute at a head of 8 m with a power of 490.5 watts. Based on the results of the Pelton Turbine Test Graph using the Taguchi method, the response of the bucket slope with the Maximum Rotation Nozzle Diameter is at -80 Bucket Inclination Producing a Turbine Rotation of 416.7 Rpm with a Nozzle Diameter of 19 mm. Meanwhile, with a maximum power of 80 bucket slope, it produces a turbine load of 405 watts with a diameter of 22 mm.
Co-Authors A Lumbantoruan Ade Irwan Ade Irwan Ahmad Yanie Andre Waskito Bhagaskara Teguh Samudra Derlini Din Aswan Amran Ritonga Doli Tryono Siregar E Eddy Erni Yusnita Etanto Heiliano Wijayanto F A Kurniawan Fadly Ahmad Kurniawan Nst Fider Lumbanbatu Gustama Putra Alhadi Indra Roza JUNAIDI M Arifin M F Harahap Maulana Siddiq Sitepu Muhammad Abdul Rasyid Muhammad Fadly Kurniawan Muhammad Idris Muhammad Ilham Muhammad Iqbal Pasaribu Pratiwi Putri Lestari R S Manullang Rahmad Dwi Sandi Recsi Febian Adiansyah Richardo Chonfu M. Sinaga Rizky Gunawan Sarjana Sarjana Satria Buana Marpaung Sukmawati Y Amanda Yopan Rahmad Aldori Yulfitra