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Editorial Staff Asian Journal Scieence and Engineering Jl. Soekarno Hatta No.9, Jatimulyo, Kec. Lowokwaru, Kota Malang, Jawa Timur 65141
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Asian Journal Science and Engineering
Published by CV. Creative Tugu Pena
ISSN : 29636752     EISSN : 29636752     DOI : http://dx.doi.org/10.51278/ajse.v1i2.545
Core Subject : Science, Engineering,
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering
Asian Journal Science and Engineering publishes all those best ideas from the science, which can be introduced in the engineering. Since, obtaining the high-quality, competitive products is based on introducing high technologies from various independent spheres of scientific researches, but united by a common end result - a finished high-technology product. The purpose of this journal is to publish quality articles dedicated to the scientific research development that focuses Mechanical Engineering, Civil Engineering, Chemical Cngineering, Electrical Engineering, Engineering Physics
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 1 No 2 (2022): Asian Journal Science and Engineering" : 5 Documents clear
Solar Charger Controller Efficiency Analysis of Type Pulse Width Modulation (PWM) and Maximum Power Point Tracking (MPPT) Elka Faizal; Yuniarto Agus Winoko; Mohammad Sukri Mustapa; Muhammad Kozin
Asian Journal Science and Engineering Vol 1 No 2 (2022): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (451.952 KB) | DOI: 10.51278/ajse.v1i2.546

Abstract

Solar radiation at any time can be different due to various things such as blocking of sunlight due to clouds, the intensity of the sun from sunrise to sunset, cloudiness in the rainy season, and the presence of fog in certain areas which causes different levels of solar energy. radiation that causes the output power of solar cells to vary. and not optimal. For that we need a control device that can stabilize the energy output from solar cells called Solar Charge Controller (SCC). This research was conducted to determine the value of the output power, voltage, and current of SCC type Type Pulse Width (PWM) and Maximum Power Point Tracking (MPPT), then determine the value of efficiency, and compare which type of SCC is better to use. Sampling of solar voltage and current data in the field at 10.00 – 15.00, this is because at that time the sunlight reaches its maximum intensity. The results showed that the MPPT type SCC efficiency was higher than the PWM type SCC efficiency value, namely 84.623% the MPPT type SCC efficiency compared to 80.935% PWM type SCC efficiency. Keywords: Solar Charge Controller, Pulse Width Modulation, Maximum Power Point Tracking
Engineering and Financial Feasibility of Residential Housing Using Greenship Rating Tool Parameters Joko Setiono; Taufiq Rochman
Asian Journal Science and Engineering Vol 1 No 2 (2022): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (662.822 KB) | DOI: 10.51278/ajse.v1i2.545

Abstract

Green building aims to reduce environmental effect by improving indoor air quality for households and the community. Green buildings use the Greenship Rating Tools evaluation standards to accomplish environmentally sustainable residential development. Purpose of the study: The most important part of this thesis is to do a engineering and financial preliminary study before the construction of houses. Methods: Three home types (48/66, 70/84, and 80/112) will be used to generate Malang Residential Home data for this project. On the basis of BBC, BFC, and GBC, the technical viability will be assessed. The NPV, BCR, IRR, and PBP will be utilized to establish the project's financial viability. Variations in capital proportion, as well as increases or decreases in project revenue and outcome, would all be included when calculating sensitivity. Results: Between 60% and 75% of the BBC's technical feasibility has been determined, whereas BFC is between 0.60 and 1%, and GBC is larger than 10%. To put Malang Residential Housing in the silver level, IDR 1,382,745,228 was the NPV, with a BCR of 1.02, an IRR of 59.75 percent, and a PBP of one year and six months. It was concluded that the project was viable based on the sensitivity of the project's income and results to its viability. Keywords: Greenship Rating Tool, Engineering Feasibility, Financial Preliminary Study
The Effect of Heating and Cooling Media Temperature on Injection Molding Products Shrinkage Gumono Gumono; Zahratul Jannah AR; Agus Sujatmiko; Candra Adityaca
Asian Journal Science and Engineering Vol 1 No 2 (2022): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (425.004 KB) | DOI: 10.51278/ajse.v1i2.547

Abstract

Injection molding is the process of molding products with various shapes and sizes from plastic materials. The problem that often arises is the presence of product defects due to shrinkage. In this regard, the effect of water cooling on product size shrinkage in the injection molding process of making acetabular cups with polypropylene plastic and metal steel mold materials will be investigated through experimental investigations. The test begins with the manufacture of molds and injection machines, then the PP liquid plastic is injected twice into the mold, the first with cooling and the second without cooling. Both products are compared for depreciation by measurement. Shrinkage analysis is done by measuring the height and diameter of the product which is then compared with the size of the mold, so that final conclusions can be drawn. Measurement of shrinkage on the outside of the product is taken from three directions, namely the height of the X-axis product (dx), the outside diameter of the Y-axis product (dy), and the outside diameter of the Z-axis product (hz). For the inside of the product with a hemispherical shape, the shrinkage measurement is calculated by calculating the volume which can then be found the average radius. The results showed that the average shrinkage of the cooling test on the X axis = 1.224 %, on the Y axis = 1.857 %, on the Z axis = 1.83%, and on the radius r = 0.825 %. The average shrinkage of the test without cooling on the X axis = 1,591 %, on the Y axis = 2,32%, on the Z axis = 2,369 %, and on the radius r = 1,267 %. Keywords: Injection Molding, Shrinkage, Heating Cooling Temperature
Comparison Analysis of Equivalent Static Earthquake and Spectrum Response Dynamics on Steel Structure Diana Ningrum; Albertus Nahak; Nawir Rasidi
Asian Journal Science and Engineering Vol 1 No 2 (2022): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (532.638 KB) | DOI: 10.51278/ajse.v1i2.548

Abstract

The purpose of this study is to compare two methods of seismic load analysis, namely the static equivalent method and the dynamic response spectrum method. The case study is the integrated service building of Tribhuwana Tunggadewi University, Malang City which has 5 levels and is located in the 4 (medium) earthquake zone with moderate soil conditions. The research method used is descriptive quantitative. Collecting data of project drawings, as well as observations and interviews. Analysis method Equivalent static and dynamic response spectrum using software Staad Pro. The results compared are the base shear force (V), the floor lateral force (F), and the displacement or displacement. The result in the form of maximum internal force is analyzed to determine the capacity or ability of the profile to withstand combined loads. The comparison of base shear and displacement does not differ much from the two seismic analysis methods used. This insignificant difference is in accordance with the SNI that for structures with a height below 40m can be analyzed using equivalent statics, while in the case study it only has a height of 30m. So that the equivalent static analysis becomes more accurate to use because the analysis process is simpler than dynamic analysis, but for structures with a height above 5 floors it is recommended to use dynamic analysis. The results of the analysis of the ability of the steel profile on the cross section of the column and beam indicate a safe condition in carrying combined loads. Keywords: Volume Fraction, Cannabis Sativa Fibers, Fiber Composites
Effect of Treatment Age on Mechanical Properties of Geopolymer Concrete Diana Ningrum; Handika Setya Wijaya; Elisabeth Van
Asian Journal Science and Engineering Vol 1 No 2 (2022): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.811 KB) | DOI: 10.51278/ajse.v1i2.544

Abstract

There are the same compound content, fly ash does not have the ability to bind, so it requires an alkaline activator for the polymerization reaction or binding reaction to occur. The alkali activators commonly used are sodium hydroxide and sodium silicate. The use of these materials makes concrete with fly ash known as geopolymer concrete. Geopolymer concrete is an alternative to conventional concrete, so it must have optimal strength like conventional concrete, therefore researchers are interested in testing the value of compressive strength, split tensile strength and mode of elasticity of geopolymer concrete using 10 molar alkali activator with a ratio of 3:2. for variations in the age of concrete 7, 14, 21, and 28 days; and the conversion value of geopolymer concrete using 10 molar alkali activator with a ratio of 3:2 for variations in the age of concrete 7, 14, 21, and 28 days. This research is an experimental study using variations in the age of concrete 7, 14, 21, and 28 days for geopolymer concrete using 10 molar alkali activator with a ratio of 3:2. The results of this study indicate that there is an effect of variations in the age of concrete on the value of compressive strength, split tensile strength, and modulus of elasticity of geopolymer concrete. Where the compressive strength, split tensile strength, and modulus of elasticity of geopolymer concrete at the age of 7 days are 31.40%; 35.44%; and 23.32% which at the age variation of 28 days increased by 100%. In addition, in this study, it is known that the conversion value at the age of 28 days for variations in the age of 7 days, 14 days, 21 days, and 28 days, respectively, is 0.31; 0.73; 0.97; 1.00 Keywords: Geopolymer Concrete, Compressive Strength, Modulus of Elasticity

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