Andalasian International Journal of Applied Science, Engineering, and Technology
The Andalasian International Journal of Applied Science, Engineering, and Technology (AIJASET) is an international journal dedicated to the improvement and dissemination of knowledge on applied science, engineering and technologies including energy, environment, industrial, agriculture, civil, transportation, Information and communication and other related sciences and engineering. AIJASET follows new trends and advanced technology for practical applications of appropriate technology.
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<![CDATA[Power Plant Performance Analysis on Variations of Generator Loading at Ombilin Coal Fired Steam Power Plant Unit 1 (2x100 MW) ]]>
<![CDATA[Ryan Adytia Putra]]>;
<![CDATA[Refdinal Nazir]]>
<![CDATA[ Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): July 2023 ]]>
Publisher : <![CDATA[LPPM Universitas Andalas ]]>
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DOI: 10.25077/aijaset.v3i2.58
<![CDATA[Abstract— Steam Power Plants are classified as thermal plants that convert chemical energy in fuel into electrical energy. In an effort to increase the effectiveness of the work of the plant, there needs to be proper planning for its operations, this is important because it directly affects the operational costs incurred by the plant. This journal aims to determine the effect of changes in load or variations in generator loading on power plant performance, both efficiency, heat rate and production costs of electricity generation and to identify the magnitude of the decline in the thermal performance of the generator, as well as determine the causes and parts of the plant whose performance level decreases compared to optimal conditions. The method used to calculate the efficiency and heat rate is the “Direct Method”, namely by directly comparing the input energy with the electrical output produced. The data used in this study is the “Power Plant Performance Test” data. The results of this study get the most optimal conditions when loading 93.39 MW Net with efficiency 34.693%, heat rate 2475,445 kcal/kWh and electricity production costs 413,297 Rp/kWh. The conclusion of this study is that plant performance is getting better at high loads. Keywords: Thermal efficiency, Heat Rate, Electricity Production Cost, and Steam Power Plant]]>
<![CDATA[Simulation of Cofferdam Calculations Using Geo-Studio Application in Peusangan Hydropower Dam Construction ]]>
<![CDATA[Hermansyah Hermansyah]]>;
<![CDATA[Irwan Irwan]]>;
<![CDATA[Habib Satria]]>;
<![CDATA[Indri Dayana]]>;
<![CDATA[Rudi Salam]]>
<![CDATA[ Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): July 2023 ]]>
Publisher : <![CDATA[LPPM Universitas Andalas ]]>
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DOI: 10.25077/aijaset.v3i2.82
<![CDATA[Cofferdam is a building in the form of earth, stone, concrete or masonry filling and holds water, prevents flooding, provides irrigation. The building has many functions such as for agriculture, power generation, and tourist attractions. Cofferdam will also be very helpful in flood control which will control flood water so that it will not overflow excessively which endangers the surrounding community. Besides having great benefits. If the cofferdam collapses (broken) it will cause flash floods that result in casualties. Therefore the cofferdam must be designed safely and technically feasible. The research approach used in this study is a quantitative approach using the 2012 GEO-SLOPE program. The conclusions from the analysis of slope seepage and seepage stability are the Critical Safety Factors for cofferdam stability according to the results of the analysis after running SLOPE/W are 1.711 & 1.512 because it is higher than 1.5 (SNI 8460:2017 Geotechnical Requirements Design, This means that the stability of the cofferdam is safe. The modeling results show that the seepage discharge is 1.81x10-7 m3/s = 1.81x10-4 liters/sec = 15.64 liters/day which is smaller than the maximum allowable discharge of 50 liters/day. So it can be concluded that the seepage discharge is safe.]]>
<![CDATA[The Implementation of Augmented Reality Based on Vuforia and Unity for Interactive Learning in Introducing Ragam Randang Objects ]]>
<![CDATA[Zulfadli Zulfadli]]>;
<![CDATA[Budi Sunaryo]]>;
<![CDATA[Reihan Hanafi Wiyanatra]]>;
<![CDATA[Randi Proska Sandra]]>
<![CDATA[ Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): July 2023 ]]>
Publisher : <![CDATA[LPPM Universitas Andalas ]]>
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DOI: 10.25077/aijaset.v3i2.84
<![CDATA[Augmented Reality (AR) is a technology that combines objects from the real world and virtual or virtual objects with real-time or direct conditions. The merging of real and virtual objects occurs because of the right technological support while the interactions that are carried out can occur using certain devices. AR is a variation of Virtual Environments (VE), better known as Virtual Reality (VR). This VR technology allows users to fully immerse themselves in a virtual environment. While Augmented Reality technology is developing very fast, many applications in Indonesia use AR technology. This study uses the waterfall system development method, where the research flow will follow the phases of the waterfall. This application is built using Unity and Vuforia. The purpose of this research is an interactive application to make it easier for students and museum visitors to understand augmented reality through mobile devices. So that museum visitors and students can see objects containing information interactively]]>
<![CDATA[Influence of Corn Cob Ash-Silica Fume Blend on the Mechanical and Durability Properties of Concrete ]]>
<![CDATA[Linda Akoth Otieno]]>;
<![CDATA[Sylvester Abuodha]]>;
<![CDATA[Siphila Mumenya]]>;
<![CDATA[Muthomi Munyua]]>
<![CDATA[ Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): July 2023 ]]>
Publisher : <![CDATA[LPPM Universitas Andalas ]]>
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DOI: 10.25077/aijaset.v3i2.86
<![CDATA[— This research explored the feasibility of corn cob ash-silica fume blend in the production of pozzolanic cement to produce High-Performance Concrete. The cement in concrete was partially replaced by corn cob ash-silica fume blend in 5,10,15 and 20% by weight of cement and was compared to a control mix of 0% replacement. An intelligent mix design, Densified Mix Design Algorithm (DMDA), was used to effectively reduce both water and cement content. In order to create high strength and workability, a polycarboxylate-based super plasticizing admixture was utilized in conjunction with a low water binder ratio of 0.35. Compressive strength was appraised to determine the mechanical properties at days 3,7,14,28 and 56 to determine the optimum percentage replacement and compared to the control at the specific ages. With the optimum percentage replacement, the flexural test was investigated at 28 days. Water absorption and electrical resistivity tests were also investigated as potential indicators of durability. All of the blends that included corn cob ash and silica fume produced a higher strength than the control except 15 and 20%, with 10% replacement yielding a cube strength of 61 MPa at day 56.]]>
<![CDATA[Fuzzy Logic-based Integrated Cooling System to Improve PV Efficiency ]]>
<![CDATA[Seflahir Dinata]]>;
<![CDATA[Ahmad Faisal Mohamad Ayob]]>;
<![CDATA[Aliashim Albani]]>;
<![CDATA[Raynaldi Cristian]]>;
<![CDATA[Donie Agus Ardianto]]>;
<![CDATA[Ojak Abdul Rozak]]>
<![CDATA[ Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): July 2023 ]]>
Publisher : <![CDATA[LPPM Universitas Andalas ]]>
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DOI: 10.25077/aijaset.v3i2.87
<![CDATA[Photovoltaic (PV) temperature is an important parameter that can influence PV performance. The increase in PV temperature can cause a drop in PV output voltage, which indicates that the PV does not operate optimally. In this paper, a design of an integrated cooling system based on fuzzy logic to control the PV temperature is presented. This, in effect, will potentially ensure that the PV performance is at its maximum condition. In this work, the temperature of the PV is kept constant by attaching a cooling system that carries water inside it. The constant temperature of the cooling system is carried out through a radiator and thermoelectric with electronic control. The experiments are carried out using two 320-watt PV systems; one with the cooling mechanism and the latter without the cooling system as a control. Several important data such as temperature, voltage, current, and radiation measurement in each PV were collected for three days from 10:00 to 17:00 with an interval of 10 minutes for each measurement. The results of the integrated cooling system measurement showed an increase in PV power generation and efficiency of 1.32% compared to the control PV unit. From the results of the study, it can be concluded that the fuzzy logic-controlled cooling system contributed to the increase in PV performance.]]>
<![CDATA[A Cassava Washing Appliance Design for The Home Industry ]]>
<![CDATA[Riska Safitri]]>;
<![CDATA[Hilma Zadry]]>;
<![CDATA[Dendi Adi Saputra]]>;
<![CDATA[Muhammad Amin]]>
<![CDATA[ Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): July 2023 ]]>
Publisher : <![CDATA[LPPM Universitas Andalas ]]>
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DOI: 10.25077/aijaset.v3i2.89
<![CDATA[The food business opportunity is very interesting for home industry entrepreneurs in West Sumatra, a home industry of cassava chips. The step of the cassava chip production process that takes longer time than the other step is the washing process. The cassava washing process is carried out manually because washing device that uses motor drives are not affordable for home industry entrepreneurs. In addition, the cassava washing process makes a physical complaint from the operators. Therefore, this research designs a cassava washer that is affordable for the home industry by considering design methods, ergonomic aspects, and customers' needs. This design is carried out using the Quality Function Deployment (QFD) method to translate the voice of the customer into technical and design characteristics, morphological charts for generating alternative designs, and an objective weighted method for evaluating that alternative. The result of this research is the design of a cassava washer which is more practical because it makes the operator works easier and can save time in the washing process. It is also very affordable, with an estimated cost of production IDR2,397,743.]]>
<![CDATA[Quality Control of Camille Beauty Face Mask Products Using Failure Mode and Effect Analysis Method : A Case Study ]]>
<![CDATA[Prima Fithri]]>;
<![CDATA[Abim Dwi Putra]]>;
<![CDATA[Anton Satria Prabuwono]]>;
<![CDATA[Pawenary Pawenary]]>
<![CDATA[ Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): July 2023 ]]>
Publisher : <![CDATA[LPPM Universitas Andalas ]]>
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DOI: 10.25077/aijaset.v3i2.85
<![CDATA[Regarding criticism and suggestions from consumers, it shows that of the 881,140 products sold, there are 22,947 products that are considered manufacturing defects, with an average percentage of defective products per month of 2.71%, with several types of defects submitted by consumers through the survey. This is quite serious because it will provide a bad experience to consumers in using this product. Failure Mode and Effect Analysis (FMEA) is a method used to evaluate system design by considering existing failure modes in a machine or equipment component system and analyzing the consequences for the reliability of the system. Based on the method used, it was found that the highest RPN value was in a case of disability, namely causing itching, with an RPN value of 504, consisting of a severity value of 9, occurrence of 7 and detection of 8, with a percentage of RPN occurrences of 35%. Beased on this result, it proposes improvements to the priority types of product defects and other product defects.]]>
<![CDATA[Evaluation of Photovoltaic Penetration on System Grid with Minimum Loading Approach ]]>
<![CDATA[Dawam Habibullah]]>;
<![CDATA[Khin Moe Moe]]>;
<![CDATA[Syafii Syafii]]>
<![CDATA[ Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): July 2023 ]]>
Publisher : <![CDATA[LPPM Universitas Andalas ]]>
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DOI: 10.25077/aijaset.v3i2.95
<![CDATA[The Indonesian government has also set a target to increase the contribution of renewable energy in the national energy mix to 23% by 2025 and 31% by 2050. In this paper, an analysis of Maximum PV Capacity was used on the transmission network with a minimum loading approach using the Power Factory15.1 simulation. From the simulation that has been done, it can be seen that the placement of two PV location points gets better results than the placement of one PV location point. This can be seen that the feeder load for PV location point of 74.3%, while for two PV location points of 35.8% which value is still within safe limits, but for two PV location points get better results. PV trip state frequency values obtained for single location point and two PV location points get a result of 2% of 50 Hz which is still within safe limits.]]>
<![CDATA[Power Plant Performance Analysis on Variations of Generator Loading at Ombilin Coal Fired Steam Power Plant Unit 1 (2x100 MW) ]]>
<![CDATA[Adytia Putra, Ryan]]>;
<![CDATA[Nazir, Refdinal]]>
<![CDATA[ Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): July 2023 ]]>
Publisher : <![CDATA[LPPM Universitas Andalas ]]>
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DOI: 10.25077/aijaset.v3i2.58
<![CDATA[Abstract— Steam Power Plants are classified as thermal plants that convert chemical energy in fuel into electrical energy. In an effort to increase the effectiveness of the work of the plant, there needs to be proper planning for its operations, this is important because it directly affects the operational costs incurred by the plant. This journal aims to determine the effect of changes in load or variations in generator loading on power plant performance, both efficiency, heat rate and production costs of electricity generation and to identify the magnitude of the decline in the thermal performance of the generator, as well as determine the causes and parts of the plant whose performance level decreases compared to optimal conditions. The method used to calculate the efficiency and heat rate is the “Direct Method”, namely by directly comparing the input energy with the electrical output produced. The data used in this study is the “Power Plant Performance Test” data. The results of this study get the most optimal conditions when loading 93.39 MW Net with efficiency 34.693%, heat rate 2475,445 kcal/kWh and electricity production costs 413,297 Rp/kWh. The conclusion of this study is that plant performance is getting better at high loads. Keywords: Thermal efficiency, Heat Rate, Electricity Production Cost, and Steam Power Plant]]>
<![CDATA[Simulation of Cofferdam Calculations Using Geo-Studio Application in Peusangan Hydropower Dam Construction ]]>
<![CDATA[Hermansyah, Hermansyah]]>;
<![CDATA[Irwan, Irwan]]>;
<![CDATA[Satria, Habib]]>;
<![CDATA[Dayana, Indri]]>;
<![CDATA[Salam, Rudi]]>
<![CDATA[ Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): July 2023 ]]>
Publisher : <![CDATA[LPPM Universitas Andalas ]]>
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DOI: 10.25077/aijaset.v3i2.82
<![CDATA[Cofferdam is a building in the form of earth, stone, concrete or masonry filling and holds water, prevents flooding, provides irrigation. The building has many functions such as for agriculture, power generation, and tourist attractions. Cofferdam will also be very helpful in flood control which will control flood water so that it will not overflow excessively which endangers the surrounding community. Besides having great benefits. If the cofferdam collapses (broken) it will cause flash floods that result in casualties. Therefore the cofferdam must be designed safely and technically feasible. The research approach used in this study is a quantitative approach using the 2012 GEO-SLOPE program. The conclusions from the analysis of slope seepage and seepage stability are the Critical Safety Factors for cofferdam stability according to the results of the analysis after running SLOPE/W are 1.711 & 1.512 because it is higher than 1.5 (SNI 8460:2017 Geotechnical Requirements Design, This means that the stability of the cofferdam is safe. The modeling results show that the seepage discharge is 1.81x10-7 m3/s = 1.81x10-4 liters/sec = 15.64 liters/day which is smaller than the maximum allowable discharge of 50 liters/day. So it can be concluded that the seepage discharge is safe.]]>
