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INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
Arjuna Subject : -
Articles 3,145 Documents
 305   306   307   308   309 
Penerapan Prinsip Desain Le-Corbusier Pada Pondok Pesantren Modern Di Kota Dumai Muhammad Iqbal Irzaiin; Gun Faisal; Wahyu Hidayat
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Entering the Era of globalization with marked advances in education made many traditional Islamic Boarding began to gradually enter the general education curriculum in it, changes thatoccur in the actual Boarding School is the anticipation of Pondok pesantren itself in answering the challenges of globalization. According to data from the Dept. of Education Dumai City (2018),each new school year about 1500 students from Dumai wish to continue education at boarding school, 1500 only 300 were in school in Dumai, the rest go to school abroad, students male moredominate in the quarters. The problems that exist in the Boarding School in Kota Dumai is, the limited capacity of the prospective students due to insufficient number of classrooms, the competitiveness amongst prospective students with prospective students the local area entrants, the boarding students are limited, lack of facilities offered by the Boarding School to prospective students to make prospective students looking take boarding school facilities. limitations for landand the high price of land the days to come will have an impact on the shape and composition of school buildings, especially the shape of the building Boarding School, in anticipation of the highprice of land in the future, the planning and design of Modern Boarding with this form of the mass of a single building, To support the mass of a single building design, architects experienced in thisfield are Le Corbusier, almost all of his work resulted in a single building mass.`Keywords: Le-Corbusier, Islamic Boarding School, Single Building mass.
Unjuk Kerja Organic Rankine Cycle Dengan Penyerap Energi Matahari Type Concave Plate Collector Pada Temperatur Sumber Panas 75 Oc Arifful Rahman; Awaludin Martin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study discusses the experimental study of the efficiency of the Organic Rankine Cycle (ORC) system with concave plate collectors as a heat source system. ORC is a conventional rankine cycle modification, where the ORC fluid works is an refrigerant or organic fluid which has a low boiling point, so that to produce steam only requires a low temperature. A good working fluid is R134a obtained from the reference of previous studies. Concave plate collector is heat source system at electricity generation system that is concentrated using the sun as a source of heat, so it can be said that this system uses environmentally friendly renewable energy sources. Experiments were carried out by varying the heat source temperature of 75 ⁰C by keeping the pump output pressure at 10 bar and comparing the test results between the use of a water heater and a combined water heater with a concave plate collector. From the experimental results obtained a maximum efficiency of 0.7% on the variation of heat source 75 ⁰C with a turbine inlet pressure of 10.1 bar and turbine intake temperature of 46.9 ⁰C with ORC power of 170.4 Watt. The biggest savings or energy supply for solar collectors is 68.33% at solar collector temperatures of 56.8 ° C with average temperature of heat sources of 70.38 ° C.Keyword : Organic Rankine Cycle, R134a, Solar collector, Renewable Energy.
Analisis Timbulan Sampah Domestik Di Kecamatan Siak Hulu Dan Kecamatan Tambang Rikhatul A’ini; Jecky Asmura; Aryo Sasmita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Siak Hulu District and Tambang District are also buffer zones. Siak Hulu District consists of 12 villages / wards with an area of 987 km2 and a population of around 110,327 people. Meanwhile, Tambang District has 17 villages with an area of approximately 489.91 km2 and a population of around 95,627 people. The population growth rate of Siak Hulu Subdistrict is 3.02% and Tambang Subdistrict is 2.85%. The increase in population and changes in the consumption pattern of the community causes the volume of waste to increase, the increase in the amount of waste that is not accompanied by a proper handling system will cause solid waste problems that are difficult to solve. The calculation of waste generation carried out refers to SNI 19-3964-1995, the unit of large city waste generation = 2 - 2.5 L / person / day, or = 0.4 - 0.5 kg / person / day, the unit of small town waste generation = 1.5 - 2 L / person / day, or = 0.3 - 0.4 kg / person / day. Siak Hulu District produces 354,058 m3 / day of waste. And Tambang District produces 181,186 m3 / day of waste. Key words: Siak Hulu District and Tambang District, waste generation, domestic waste.
Prarancangan Pabrik Dimetil Eter Dari Tandan Kosong Sawit (TKS) Menggunakan Proses Indirect Synthesis Dengan Disain Alat Utama Destilasi Dimetil Eter Nurrahmiati Nurrahmiati; Panca Setia Utama
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The level of LPG demand is increasing every year, even the import of LPG has been carried out for a long time, but the need for LPG has not been fulfilled, this has led to the establishment of a Dimethyl Ether (DME) factory to cover LPG needs in Indonesia. DME can also be used as a propellant in aerosol form such as hairspray, insecticide, and air freshener. The main raw material used in the manufacture of DME is Oil Palm Empty Bunches (TKS). This factory is built with a capacity of 50,000 tons / year which will be established in Pelintung, Medang Kampai District, Dumai. The DME production process is carried out by the Indirect Synthesis process where DME is made through 2 processes, namely methanol synthesis from EFB and DME synthesis from methanol. Methanol synthesis and DME synthesis occur in 2 different reactors where methanol is first synthesized then dehydrated to DME. The main equipment design in this plant is the DME Distillation which functions to separate DME as the top product from Methanol and water as the basic product. The feed, distillate and bottom temperatures in this distillation tower are 48,10C, 33,70C and 231.40C with a pressure of 9 atm. , 97 m. Economic analysis on the design of this factory shows that this factory is feasible to be established with a factory Payback Period (PBP) of 2.29 years and a BEP at a capacity of 38%.  Keywords: Dimethyl ether, economic Analysis, empty palm fruit bunches
Penggunaan Abu Terbang PT Indah Kiat Sebagai Bahan Pengisi (Filler) Dalam Campuran Aspal Jenis AC-WC Dengan Pengujian Marshall Ramadini Febrina; Alfian Malik; Yosi Alwinda
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
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Abstract

The filler in a concrete asphalt mixture that is commonly used is Portland cement which is relatively expensive. It is expected that the filler is replaced with cheaper materials. Flying ash is a relatively cheaper material because fly ash is waste material. The purpose of this study was to determine the effect of the use of fly ash fillers in ACWC asphalt mixtures. This study used the percentage of optimum asphalt content (KAO), namely 5%, 5.5%, 6%, 6.5% and 7%. The proportion of fly ash used is 0%, 2%, 4%, 6% and 8%. The specifications used follow the 2018 Bina Marga Standard using the Marshall method. The results of this study indicate that the AC-WC mixture using fly ash filler has a better stability value than not using fly ash filler. The recommended level of fly ash for AC-WC mixtures according to specifications is 6% because it has better values of KAO 6,58% stability, flow, VIM, VMA, VFA, and MQ and meets the 2018 Bina Marga standards. Keywords : Fly ash, Filler, AC-WC, Bina Marga Specification 2018
Kaji Numerik Pengaruh Beban Dinamik Terhadap Ketebalan Lapisan Film Dan Tekanan Hidrodinamik Pada Journal Bearing Menggunakan Finite Difference Method Fadila Alfandi; Dedi Rosa Putra Cupu; Syafri Syafri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
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Abstract

One of the components used to hold the shaft that transmits power and rotation is the journal bearing. Journal bearing has the advantage of being able to withstand large loads and high rotation, however, journal bearing has a weakness, which is high friction. This high friction is minimized by means of lubrication, where the lubricant forms a film layer which functions as a separator between the journal and the housing so that mechanical contact does not occur. Journal bearing is usually work with dynamic loads on their operation, these dynamic loads affect the thickness of the film layer and the hydrodynamic pressure on the journal bearing. The al approach with the finite difference method is one method to determine the thickness of the film layer and the hydrodynamic pressure on journal bearing due to dynamic loads. The finite difference method is used to solve the differential equations in the dynamic load bearing Reynolds journal equation.The dynamic load acting on the journal bearing is the influence of non-dimensional amplitude and non-dimensional frequency. The nondimensional amplitude was varied from 0.1 to 0.5, while the non-dimensional frequency was varied π / 4, π / 2, π, 2π, 4π, and the observed time was 0.00 s to 0.09 s The conclusion is that the load on the journal bearing is directly proportional to the hydrodynamic pressure and inversely proportional to the thickness of the film layer with a maximum hydrodynamic pressure of 3,313 kPa and a minimum film layer of 32.92 μm, and the load of the journal bearing is directly proportional to the eccentricity ratio. The maximum eccentricity ratio is 0.675. Meanwhile, non-dimensional amplitude affects hydrodynamic pressure and non-dimensional frequency affects changes in hydrodynamic pressure with time. Keyword: Journal Bearing, Hydrodynamic, FDM, Dinamic Load
Penentuan Nilai Surface Loading Rate (Vo) Dengan Menggunakan Hamdani Hamdani; Lita Darmayanti; Shinta Elystia
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

In general, in the water treatment process, the process of separating water from solids occurs in the form of flocculant particles or sedimentation type II. Before planning to process river water into clean water, it is necessary to analyze the rate of deposition as the basis for the design criteria that will be used in the planning of the sedimentation basin. The sampling points are at a depth of 10, 30, 50, 70 and 90 cm and the sampling time ranges are 10, 20, 30, 45 and 60 minutes. The results obtained in order to achieve an efficiency of 70% in sedimentation processing, an overflow rate (Vo) of 1.3 m / h is required. Keywords: column settling, sedimentation type II, surface loading, papaya seeds
Kinerja Pembangkit Listrik Tenaga Uap (PLTU) Berdasarkan Pemanfaatan Limbah Padat Kelapa Sawit Pada Pabrik PT. Rama Jaya Pramukti
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The other processed product of palm oil mills (POM) is Palm Biomass Solid waste. This waste is massive produced and capable to be used as the energy source of electrical power. This research analizes the convertion of biomass waste as the fuel fired steam power plant in POM owned by PT. Ramajaya Pramukti located at Kampar, Riau Province. This POM has production capacity of 60 tons / hour. The type of data used in this analysis is secondary data which includes data on fresh fruit bunches (FFB) as well as waste produced by the POM. In January 2017, the POM process 20.722,799 tons of FFB and produce 1.191,561 tons of shells and 2.590,349 tons of fiber. The lowest process of FFB in 2017 occurred in June at 12.363,807 tons wich produses 710,918 tons of shells and 1.545,475 tons of fiber. The results of this research shows that calculation of the potential convertion of palm biomass by PT.Ramajaya Pramukti that can be used as energy for steam power plant to generate electrical power is 23.09 MWh in January 2017 and 12.004 MWh in June 2017. Key words: PLTU, Biomass, Electricity Palm Oil Mill
Analisa Sistem Proteksi Petir Pada Sutt 150 KV Menggunakan Software ATP Havel Alindo Sano; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
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Abstract

Electrical energy is very important today. The power company distributes the electric energy through the 150 kV overhead lines. The transmission line is a major part of the electrical energy distribution process. Overhead lines are supported by high towers, therefore the overhead lines and towers prone to lightning. The lightning current leads to the increasing voltage on the overhead lines. Surge arrester is a protective device used to protect overhead lines from lightning current. The analysis of the performance of the surge arrester against the lightning impulse requires the investigation in the placement of the surge arrester and the number of surge arresters installed. This study aims todetermine the magnitude of the voltage caused by lightning strikes by varying the location of the surge arrester on the overhead lines. This study was conducted by selecting a lightning strike at apeak voltage of 10 MV on a transmission tower using ATP software. This study indicated that the installation of surge arresters on the overhead lines for each tower leads to droping voltage verywell. The result of study shows that the best result was to install the arresters on each tower phase by decreasing the voltage at 1st tower by 0,4679 MV (92,81%), 2nd tower 0,5674 MV (92,64%), 3rd tower 1,2248 MV (85,79%), 4th tower 10 MV (0%), 5th tower 1,2322 MV (86,09%) and 6th tower 0,6219 MV (92,53%).Keywords : Lightning strikes, surge arrester, peak voltage, placement of surge arrester , voltage drop
Pengembangan Kontroler Pada Excavator Komatsu Pc130f-7 Untuk Fungsi Engine Cut Off Imron Masykuri; Adhy Prayitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Abstract

Controller is one component of the regulatory system that functions to process the feedback signal and the reference input signal or error signal becomes a control signal. The purpose of this study is to design a simple controller as a form of controller development on the Komatsu PC130F-7 Excavator for engine cut-off functions if there are errors or abnormal engine oil levels and pressures. Komatsu PC130F-7 Excavator is a heavy equipment with the highest population in the area of plantations and industrial plantations, especially in Riau and surrounding areas. The controller created is the development of an existing controller on the Machine by adding the engine cut-off feature if there are abnormal oil levels and pressures, and also as an alternative solution to the current problems, that is for safety and preventing more serious damage to the engine. The oil level sensor will be active if the oil level is below the low on the H-L (high-low) measuring stick, and the oil pressure sensor will read if the oil pressure is below 0.49 kPa (0.5 kg / cm²). This design has two inputs, that is a voltage of ± 15 volts on the path of the engine oil level sensor and oil pressure sensor. This voltage is used as an input that activates the relay work to respond to lower engine speed from 1880 rpm to 950 rpm, and continued by the timer work as a time lag regulator to cut off the electricity on the starting engine line so that the engine will automatically stop turning and shut down..Keywords : Controller PC130F-7, Oil Level Sensor, Oil Pressure Sensor, Relay Timer

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