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Reaktom : Rekayasa Keteknikan dan Optimasi
Published by Universitas Hasyim Asy'ari
ISSN : -     EISSN : 25484095     DOI : https://doi.org/10.33752/reaktom
Core Subject : Engineering,
Automotive Engineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering
Reaktom : Rekayasa Keteknikan dan Optimasi is open access and peer-reviewed journal, published by Universitas Hasyim Asy ari, Indonesia to disseminate research results from scientists and practitioners in Engineering and Science fields. Aim and Scope: Electrical Engineering: robotics, control system, microcontroller application, telecommunication, electronics, power electronics, power engineering, power distribution, etc. Mechanical Engineering: material engineering, production, automotive, energy conversion, aerodynamic, etc. Industrial Engineering: chemical engineering, physic engineering, instrumentation and control, industrial management, manufacture, etc. Civil Engineering: structure engineering, hydrology, geotechnical, construction management, etc. (but not limited to)
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 78 Documents
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STRATEGI PENGEMBANGAN USAHA SAYURAN KANGKUNG ORGANIK MENGGUNAKAN METODE ANALISIS SWOT Achmad Syaichu
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

Abusiness shouldhave a mature planning and strategy.The right strategy certainly has a great influence in the development of the business itself.Thisresearchtried to examine the strategy of developingorganic vegetable business in POMOSDAusingSWOT analysis.The result of the research is based on the position in IE matrix, farmer group is in quadrant V. The core of strategy that can be applied by farmer group Gapoktan Japo is strategy of hold and maintain (Keeping and Maintain), through strategy of market penetration and product development. The results of SWOT analysis obtained a) S-O is maintain and improve service to consumers and expand distribution and marketing. b) W-O is a ensuring product certification and improving data archiving and exploiting opportunities. c) S-T is keepingand maintaining existing marketing areas. d) W-T is establishing cooperation (net working) with companies to look forword and obtain information market organic farming.
Penyusunan Target Penjualan dengan Menggunakan Metode Autoregresive Integrated Moving Average(ARIMA)Box Jenkins Sumarsono
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

Market conditions are becoming increasingly competitive in order to exist in the midst of market competition without exception must improve the right business strategy by developing a strategy plan of planning and development, especially those related to the market. Marketing Department, especially the sales department has an important role as the spearhead of the company in competing in the market. One of the major sales plans is to make sales targets. It is expected that the sales target is a realistic figure with the current market condition and certainly still consider the growth aspect in the target year based on the previous year.The method used in the preparation of sales targets using the method Autorgresive Integrated Moving Average (ARIMA)Box Jenkins. The results of the analysis obtained sales predictions for 52 weeks ahead. And considering the annual growth factor of 20% obtained value of sales target 52 weeks ahead. With the measured sales target value, the sales target value becomes realistic and the achievement of the sales target will be better realized. Furthermore, the marketing can develop a strategy of achieving the target with more clearly and directed by considering the condition of people's purchasing power, the level of brand competition in the year of prediction and team readiness and cost expenses.
PROGRAM PEMBERDAYAAN USAHA KECIL MENENGAH (UKM) JAMAAH LIL-MUQORROBIEN UNTUK MENINGKATKAN PEREKONOMIAN Nur Wakit
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

Community empowerment is a social action in which the population as a community organizes itself in making collective planning and action to solve social problems or meet the needs in accordance with the capabilities and resources it has.SWOTAnalysis is a form of analysis within the management of the company or within the organization that systematically can help in the effort of preparation of a mature plan to achieve goals, both short-term and long-term goals, By using swot analysis method, the number of pilgrims who have been empowered based on age 30-35 years as many as 7 people by 25%, 36-40 years as manyas 10 people by 35%, 41-45 years as much as 1 person by 3%, 46-50 years as many as 5 people by 17%, 51-55 years as many as 2 people by 7%, 56-60 years as much as 1 person by 3%, age 61-65 years as many as 3 people by 10%. It can be concluded that most of the pilgrims who are empowered by the Commitment of the Bureau of Uswatan are 36-40 years old by 35%.
Perancangan Sistem Kendali dan Monitoring Tegangan Motor 3 Fasa Berbasis Internet of Things Menggunakan Aplikasi Blynk Supono, Tri Rijanto, Jati Widyo Leksono
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 5 No 1 (2020): Juni 2020
Publisher : Universitas Hasyim Asy'ari

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Abstract

Internet of Things is a technological development that must be followed along with the development of the era and revolution of the 4.0 industry today. With the Internet of Things can work more efficiently and effectively wherever we are like CCTV monitoring process, smarthome and 3 phase motor voltage monitoring. The purpose of this research is to control system switch on off and monitor the Internet of Things 3-phase motor voltages. This research is an experimental study by controlling the on off control system which is controlled from the Blynk application and monitoring the reading results of the ZMPT101B voltage sensor which measures the phase voltages R, S, and T whose results are sent by the ESP32 module to be displayed on a smartphone using the blynk application. This research uses the method measurement of voltage values not only relies on sensor readings, but also uses an AVOmeter with the aim of measuring the accuracy of sensor readings. From sensor readings and AVOmeter measurements, it will be compared to its value by knowing a percentage of error values from both measuring instruments. From the test results obtained an average time of 12.6 seconds for control on and 15.6 seconds for control off as well results in a motor voltage error value I phase R = 0.98%, S = 1,1%, T = 0,8% and motor II phase R = 2,1%, S = 2%, T = 1%. The average motor voltage using the AVOmeter gauge for motor I of R = 233.1 V, S = 234 V, T = 232.5 V, motor II phase R = 233.1 V, S = 233.6 V, T = 233 V, while the voltage sensor gauge ZMPT101B motor I average of R = 230.8 V, S = 231.4 V, T = 230.7 V, and phase II motor R = 228.2 V, S = 228.7 V, T = 230.2 V.
Analisis Reaktor Biogas Portable Dengan Bahan Baku Kotoran Sapi Mix Limbah Tahu Eko Heri Cahyono, Basuki, Mochamad Arif Irfa`i
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 5 No 1 (2020): Juni 2020
Publisher : Universitas Hasyim Asy'ari

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Abstract

The high level of disposal of livestock manure and liquid waste that is not handled properly causes environmental pollution, including water, soil and strong odors. This waste can be converted into an energy source that can be used as a biogas producer by building abiogas reactor unit portable. The problem in this research is how to design abiogas reactor portable, while the aim of this research is to know how the pressure and technology produced by thebiogas reactor. portable . This type of research that the author uses is quantitative research. For the method the author uses an experimental method, with the independent variable volume of raw material cow dung mix , tofu waste is 28 kg and the dependent variables are pressure and volume. The results showed that the biogas reactor was portable Raw material for liquid waste tofu mix cow dung with the highest volume of 34769 ml, for biogas production has the highest value of 0.0012367 liter / g, at pressure has the highest value of 118.7
Rancang Bangun Alat Pengering Biji Kopi Menggunakan Pemanas Kompor Gas Lpg Dengan Model Roll Reza Anjasmara Prasetya, Mochamad Arif Irfa’i, Agung Samudra
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 5 No 1 (2020): Juni 2020
Publisher : Universitas Hasyim Asy'ari

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Abstract

Coffee is one of the major agricultural commodities in Indonesia. The drying process is carried out conventionally (naturally), requires a relatively longer drying time between 1-2 weeks depending on the weather and hot sun, to shorten the time in the coffee bean drying process, a replacement heat source is needed, using a dryer with a roll tube type. which rotates using an LPG gas stove heater. The drying process uses drying variations of 60, 120, and 180 minutes with an initial weight of 1000 gr coffee beans with an initial moisture content of 22.8%. The drying process took 60 minutes, the weight of coffee beans was 955 gr, with 21% moisture content, temperature 42 ° C. Time 120 minutes, weight 911 gr with 20% moisture content, temperature 42 ° C, while time 180 minutes, weight yield 863 gr, water content 17%, with a temperature of 43.5 ° C. The greater the temperature in the drying process, the more effective it is to reduce the weight and moisture content of the coffee beans. The standard of coffee beans is 12% with a maximum drying temperature of 55 ° C.
Pengaruh Perubahan Diameter Pipa Mendadak 1 Inch ke ¾ dan 1 ¼ Inch Terhadap Pressure Drop dengan Variasi Bukaan Katup Muhammad Taufiq Afifudin, Basuki, Mohammad Arif Irfa’i
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 5 No 1 (2020): Juni 2020
Publisher : Universitas Hasyim Asy'ari

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Abstract

Application of the principles of fluid mechanics can be found in the fields of industry, transportation and households. The series of PVC pipes that are used to distribute water at home, of course, has losses caused by its components, one of which is the change in the cross-section of the pipe. One of the energy losses in the change in pipe section is the pressure drop. The pressure drop can be influenced by the fluid flow discharge and the magnitude of the change in the pipe, dibit has fluid flow which causes pressure on the pipe wall. The research in this thesis was carried out in the Mechanical Engineering Laboratory of the Hasyim Asy'ari University. This research is quantitative in nature which will discuss the pressure drop in the sudden change in cross-section which has a diameter of 1 inch to ¾ inch and 1 inch to 1 ¼ inch with variations in valve openings of 100%, 75% and 50%. 1 inch to ¾ inch at each valve opening is 100% 0.1 bar, 75% 0.09 bar and 50% 0.05 bar, while the pressure drop of 1 inch cross section change at each valve opening is 100% equal to 0.03 bar, 75% at 0.03 bar and 50% at 0.06 bar.
Pengaruh Jenis Sambungan Pipa Elbow 90° dan Short Bend Terhadap Head Loss Pada Sistem Perpipaan Bambang Kurniawan, Basuki, Mochamad Arif Irfa`'i
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 5 No 1 (2020): Juni 2020
Publisher : Universitas Hasyim Asy'ari

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Abstract

The environment around us will not be far from the flow of fluids to meet the needs of life. For example, a series of PVC pipes used to distribute water at home, of course, has losses caused by its components, one of which is the pipe bend connection. One of the energy losses in changing the pipe cross section is the pressure loss. The pressure loss can be affected by the flow rate of the fluid and the magnitude of the bend connection of the pipe. The research in this thesis was carried out in the Mechanical Engineering laboratory of Hasyim Asy'ari University. This research is quantitative in nature which will discuss about the pressure loss in elbow pipe bends or broken and short pipe bends with a cross-sectional size of 1 terhadap inches to the value of pressure loss. The results showed that the greatest value of pressure loss was in the bend of the elbow or broken pipe, which was 0.002206 m, while the smallest value of pressure loss was in the bend of the short pipe which had a value of 0.00000332 m. So the conclusion of this pressure loss research is that the greater the r/d value of the pipe bend, the smaller the pressure loss value.
Pengaruh Jarak Celah Bilah Penganggu Terhadap Kinerja Pompa Sentrifugal 3 Sudu Mochammad Sarifuddin, Mochammad Arif Irfa’i, Indra Herlamba Siregar
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 6 No 1 (2021): Juni 2021
Publisher : Universitas Hasyim Asy'ari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33752/reaktom.v6i1.2169

Abstract

A device that has the basic function of moving a fluid from one container to another is called a pump. In pumps that play an important role is the impeller, now there are many modifications and innovations of pump impellers to support every industrial need. The purpose of this study was to determine the effect of differences in rotational speed variations, design variants of the impeller, and temperature variations set in such a way on the performance of centrifugal pumps. The impeller used in this study is a semi-open impeller with a total of 3 blades that uses a variable spacing of 2 mm, 3 mm, and 4 mm interfering gaps and a motor rotation of 1500 rpm, 2000 rpm, 1800 rpm, and temperature variations of 30 ° C, 40 ° C and 50 ° C. By using an electric motor as the driving force, the type of flow is radial flow, and the pipe diameter is inch. The highest head value that can be produced by this study is 15.70 meters with an electric motor speed setting of 2500 rpm. The highest capacity is 47 LPM at a rotational speed of 2500 rpm. The temperature variation achieved at 30 ̊ C was 2.3 meters and became the highest head. From the analysis of the pump with the impeller gap, the greater the blade gap on the impeller, the smaller the head, capacity, and efficiency produced by the pump.
Pengembangan Alat Uji Pengaruh Variasi Kelengkungan Impeller 4 Sudu Terhadap Kinerja Pompa Sentrifugal Khusnul Hasby, Indra Herlamba, Nur Kholis
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 6 No 1 (2021): Juni 2021
Publisher : Universitas Hasyim Asy'ari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33752/reaktom.v6i1.2170

Abstract

Pumps are equipment that functions to move fluid flow from one place to another. In pumps that play an important role is the impeller, now there are many modifications and innovations of pump impellers to support every industrial need. The purpose of this study was to determine the effect of the impeller with variations in blade curvature on the performance of a centrifugal pump using variations in motor rotation and temperature. In this study, the type of impeller used is an impeller with a total of 4 blades using a blade curvature of 60°, 70°, 80°, and 90° with a motor rotation of 1500 rpm, 1800 rpm, 2100 rpm, and temperature variations of 40° C, 50° C and 60° C. The driving motor used is a motor, the pump that will be used is a radial flow centrifugal pump with a suction and discharge pipe size of inch. The results of this research are the highest head on the impeller with variations in blade curvature is 11.36 meters at a rotational speed of 2100 rpm, a capacity of 37 liters per minute at a rotation speed of 2100 rpm, and an efficiency of 13.60% at 2100 rpm. For the highest head temperature variation of 5.35 meters at a temperature of 40° C. From the analysis of pumps with variations in the curvature of the impeller blades, the larger the blade gap on the impeller, the smaller the head, capacity, and efficiency resulting from the related pump.

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