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Logic : Jurnal Rancang Bangun Dan Teknologi

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Published by Politeknik Negeri Bali

ISSN : 1412114X EISSN : 25805649 DOI : https://doi.org/10.31940/logic.v21i3

Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

Logic : Jurnal Rancang Bangun dan Teknologi is a peer-reviewed research journal published by Unit Publikasi Ilmiah, Pusat Penelitian dan Pengabdian Masyarakat, Politeknik Negeri Bali, aiming at promoting and publishing original high quality research in all disciplines of engineering and applied technology. All research articles submitted to Logic should be original in nature, never previously published in any journal or presented in a conference or undergoing such process across the world. All the submissions will be peer-reviewed by the panel of experts associated with particular field. Submitted papers should meet the internationally accepted criteria and manuscripts should follow the style of the journal for the purpose of both reviewing and editing.

Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur

Articles 10 Documents

Search results for , issue "Vol. 22 No. 3 (2022): November" : 10 Documents clear

Greenship Assessment of Indoor Health and Comfort at Greenhub Suited Offices Rizka Rahmania; Dyah Nurwidyaningrum
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Implementation of Green Building can reduce global warming and create health and comfort workplace in order to improve employee performance. Greenhub Suited Office has the potential to get high points in achieving the Indoor Health and Comfort Aspect on the Greenship Interior Space 1.0. This research was done during work activities with 60% occupancy rate. This paper aims to analyze the achievements on indoor health and comfort aspect based on the Greenship rating tools Interior Space version 1.0. The descriptive approach on this reasearch was implemented by collecting data through the interview with an expert and occupants, literature study, the data retrieval with comparative study according to GBCI standard, fields survey directly, and field measurements. Based on the assessment, almost all the Indoor health and comfort criterias had been achieved by Greenhub Suited Offices. The results showed that Greenhub obtained a total index of 23 points with a percentage of 85%. Greenhub must earn 85% of Greenship Rating Tools percentage for the other five aspects on the GBCI standard to get a platinum rating.

Thermal Comfort Study of Outdoor Space for Face-to-Face Learning System: Study of Outdoor Thermal Comfort for Face-to-face Learning Systems Maria Rosita Maharani; Eddy Prianto
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

The transmission covid-19 virus is through droplets are splashed by people who have the virus. Therefore, activities that make crowding especially in closed rooms with poor air circulation are very avoided, because the rate of transmission in the inner room with poor air circulation has a higher presentation compared to transmission in the outside room. With new protocol to use maximum room capacity limit of 50%, using outdoor space can be good alternative solution to increase space for face to face learning system. But there is needed a study of thermal comfort for outdoor space. The object taken as a sample in this study was sitting area of the Undip Architect campus. This paper present measurements of dry temperature, humidity, and air movement with quntitative method. From the examine of effective temperture show that the object research have cozy thermal comfort according by Mom dan Wiesebron standards. This examamination of effective temperature can also be exam for other outdoor environments.

Analysis of Modification of Car AC Compressor to Split AC Compressor on Cooling Rate Mokh Hairul Bahri; Adi Pratama Putra
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Refrigeration or cooling technology is increasing, especially regarding the coolant, almost all new vehicles now use air conditioning to condition the air in the vehicle cabin, but there are still many aspects that currently have not been paid much attention, especially to compressors, compressors for now still rely on the engine as a direct driver which makes fuel consumption more wasteful and reduces the performance of the vehicle. The purpose of this research is to modify a conventional compressor into an electric compressor by utilizing a split ac compressor. The research method uses the direct experimental method, can a split ac compressor replace a conventional compressor. Testing without changing a lot of the cooling system on the car, only changing the compressor without any other changes. The results of the research on split ac compressors can be applied to cars, but the cooling rate is slower than car ac compressors.

Filtration Design Modeling Study with Variation in Number of Filters, Palm Oil Mill Effluent Meshing Hajar Isworo; Muhammad Khalil; Ika Kusuma Nugraheni; Kurnia Dwi Artika
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Processing activities of oil palm fruit into CPO produce liquid waste that can pollute the environment, so it is necessary to process liquid waste in palm oil mills. This study aims to design the filtration to overcome the existing pollution in the palm oil mill. The table shows the formation of 3 filter ABC formations has the highest speed of 6.419 m/s. When we place a large meshing hole on the first level, the speed and speed are smaller, this can be seen in the CBA, CBAC and CBACB formations. The meshing formation with a small size in the first position can increase the speed and pressure, we can see this in the ABC, ABCA and ABCAB formations so that the oil palm wastewater filtration process can run smoothly without a decrease in fluid velocity.

Tensile Strength Analysis of AISI 1045 Steel Results of Smaw Welding Using Variations of Preheat and Cooling Media Bayu Pranoto; Subagiyo; Samsul Hadi; Muhamad Zidan Wibowo
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

In the welding process, there are many factors that need to be considered, including heat input, cooling rate, the material being welded, and the use of added materials, if these factors are not considered, they can cause cracks in the American Iron & Steel Institute (AISI) 1045 material. to determine the effect of preheat variations on tensile strength, the effect of cooling media on tensile strength, and to determine the interaction of preheat variations and cooling media on tensile strength. This research method used experimentally by varying the preheat temperature 250⁰C, 325⁰C, 400⁰C, and the cooling medium was lime, sand, and normal air, then tensile test was carried out. The results showed that the cooling medium affected the tensile strength with the highest tensile strength of 64.35 kg/mm2 on the sand cooling medium, while the preheat variation had no effect on the tensile strength as shown by a graph close to the horizontal straight at the tensile strength ranging from 60 kg/mm2, interaction between preheat and cooling medium has no effect on tensile strength. This is indicated by the tensile strength values that are almost close to each preheat point, namely at a temperature of 250⁰C between 53-67 kg/mm2, at 325⁰C between 56-60 kg/mm2, and a temperature of 400⁰C between 51-64 kg/mm2. In this study it can be concluded that a good cooling medium uses sand media with a preheat temperature of 250⁰C.

Design and Build an Internet of Things (IoT) Automatic TV Broadcasting Antenna System Jon Endri; Elizah Fitri; Suroso
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Nowadays, television is used for educational purposes. It is easily accessible through air-to-air broadcasts and can be connected via satellite. What is witnessed on a television screen is all image and sound elements. Many people feel uncomfortable watching television shows because when the television is used, the broadcasts that appear are not all images and sounds that can be seen and heard properly. Most antennas used by every household are patented in a certain position. Based on the existing description, the problem that would be solved is how to design an IoT-based TV broadcasting antenna system to make it easier to watch television with clear broadcasts and good sound without changing the antenna's position manually. With the design method, the tool to be made consists of a flowchart and a circuit design, namely, building a system with inputs, processes, and outputs. The automatic TV broadcasting antenna system based on the internet of things (IoT) is a system that points the antenna in the best position for each selected broadcast that can be controlled via Android using the Blynk IoT Application. After that, the test was carried out by taking data at two locations for the IoT antenna. The assessment results showed that each location was different, and the position of the antenna direction would also be different, so the location of the antenna must be changed by changing the angle contained in the Arduino IDE software.

Design & Build Banknote Nominal Identification Tools for Visual Impairment Using Convolutional Neural Network Algorithm and Tensorflow with Android Based Selvia Rossa; Lindawati; Suzanzefi
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

The buying and selling transactions that we usually do in our daily lives are difficult for people with visual impairment because it is difficult to distinguish the denomination of rupiah banknotes because of the limitation of sight, so it becomes one of the problems. This research focused on making a voice-based rupiah banknote nominal detection tool, using convolutional neural network algorithms in machine learning as the core of this system. This tool was also equipped with a voice-based android application to monitor the remaining money used when making buying and selling transactions-testing the tool used real test data of 20 images per class, producing an accuracy of 83%, as evidenced by Confusion matrix calculations.

Corrosion Rate and Residual Stress on GMAW Weld Joint of SUS 304 Steel with Static Thermal Tensioning Treatment R.N. Akhsanu Takwim; Anggit Murdani; Bayu Pranoto
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

One of the biggest problems in the metal welding process, especially for stainless steel, is the occurrence of large distortions. To reduce distortion during the welding process, it is recommended to provide secondary thermal like Static Thermal Tensioning. However, the provision of secondary thermal is allegedly able to decrease residual stress but reduce the corrosion resistance of stainless steel . In this study, variations in temperature of static thermal tensioning were applied during the GMAW process of SUS 304 plate. Furthermore, the results of the welding were made test specimens to determine the residual stress and corrosion rate of each temperature variation. The measurement of the residual stress using slitting method and measurements of the corrosion rate was carried out with the Autolab PGSTAT 204 potentiostat. The measurement results showed that residual stress of the welding results decrease along with the increase in the temperature of the Static Thermal Tensioning treatment where the treatment temperature of 200 ºC have highest residual stress at 113.79 MPa, followed by the treatment temperature of 250 ºC with 105.67 MPa value, and the lowest residual stress at temperature of 300 ºC with 77.82 MPa value. But, the corrosion rate value at the opposite way where the treatment temperature of 200 ºC produces the lowest corrosion rate, which is 0.70 mm/year, followed by the treatment temperature of 250 ºC of 0.99 mm/year and at a treatment temperature of 300 ºC with a corrosion rate of 1.27mm/year.

Experimental Design Factorial Parameters of Honey Water Content Levels to Improve Honey Processing Productivity Denny Nurkertamanda; Mohammad Habiel Baihaqi; Yusuf Widharto
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

In producing honey products, must meet all SNI quality standards (8665:2018), one of which is honey water content of less than 22%. Honey from farmers has a moisture content of more than 22% so the water content must be reduced. On of the technique that use in a company to meet those standard uses a dehumidification system combined with air conditioning and a honey rain device. With the current machine configuration, the required honey moisture reduction process time is 11 days. This study focuses on finding a combination of degrees Celsius temperature factor and relative humidity percentage factor that results in the optimal rate of reduction in water content. The results showed that temperature and relative humidity each had an effect on the rate of decrease in the water content of honey and no interaction effect was found between the factors of temperature and relative humidity on the rate of decrease in the water content of honey. The combination of selected temperature and relative humidity factors, namely 27℃ and 40%, in the most optimal rate of decrease in water content with an average of 0.416667% per hour. When compared with the combination of temperature and relative humidity in the company, namely 30°C and 60%, the selected treatment combination can reduce the processing time for reducing the honey moisture content and increases productivity by 50%.

Analysis of Financial Feasibility of Tourism Transport and Shuttle Transport Business: (Case Study: PT. Penjor Bali Transport) I Gede Fery Surya Tapa; I Nyoman Indra Kumara; I Nengah Darma Susila; I Ketut Sutapa
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Before the Covid-19 pandemic, an increase in the number of foreign and domestic tourists. With the increase in the number of tourists, the number of tourist travel efforts to increase the mode of transportation, with the aim of travel and shuttle visits increases every year. The objectives of the study are to analyze most of the BOK of tourist and shuttle transportation, to analyze the revenue of financial transportation and shuttle transportation, and to analyze the feasibility of tourist and shuttle transportation. The data needed for this study are primary data obtained from questionnaire surveys and interviews, and secondary data obtained through related institutions. The total operational cost of the tourist transportation vehicle is Rp. 5,937,007,065 12 vehicles / year, shuttle transportation of Rp. 5,975,220,122 17 vehicles / year. The total tourism transportation revenue is Rp. 7,158,878,400 12 vehicles / year, and shuttle transportation of Rp. 8,978,130,221 17 vehicles / year. The financial feasibility of tourist transportation with an NPV value of Rp. 100,640,493,054> 0 (feasible), BCR value 1.95> 1 (feasible), IRR value 42.478%> 15% MARR (feasible), and PBP time of 7 years and 1 month. Shuttle transportation NPV value of Rp. 734,194,558> 0 (feasible), BCR value 1.02> 1 (feasible), IRR value 19.649%> 15% MARR (feasible), and PBP time of 6 years 4 months. Sensitivity analysis of tourist transportation costs increased by 34%, income decreased by 34% and shuttle costs increased by 1.5%, income decreased by 1.5%. Losses during 2020-2021, for tourist transportation amounted to -Rp. 10,782,606,379 12 vehicles / 2 years, shuttle transportation of -Rp. 16,866,802,314 17 vehicles / 2years

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M. Yusuf

Contact Email
yusuf@pnb.ac.id

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+62361-701981

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logic@pnb.ac.id

Editorial Address
Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali, Jl Kampus Bukit Jimbaran, Badung, Bali, Indonesia

Location
Kab. badung,

Bali

INDONESIA

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name M. Yusuf

Contact Email yusuf@pnb.ac.id

Phone +62361-701981

Journal Mail Official logic@pnb.ac.id

Editorial Address Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali, Jl Kampus Bukit Jimbaran, Badung, Bali, Indonesia

Location Kab. badung, Bali INDONESIA

Abstract

Abstract

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Abstract

Contact Name
M. Yusuf

Contact Email
yusuf@pnb.ac.id

Phone
+62361-701981

Journal Mail Official
logic@pnb.ac.id

Editorial Address
Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali, Jl Kampus Bukit Jimbaran, Badung, Bali, Indonesia

Location
Kab. badung,

Bali

INDONESIA