Current Journal: International Journal Applied Technology Research最新文献_第4页

Optimization of Device Installations in the Home Solar Power Generation System 家用太阳能发电系统中设备安装的优化

Current Journal: International Journal Applied Technology Research Pub Date : 2022-10-01 DOI: 10.35313/ijatr.v3i2.80

I. R. Mardiyanto, Sri Paryanto Mursid, S. Utami

引用次数: 0

Biodiesel Production from Rubber Seed Oil as An Alternative Energy Source – A Review 橡胶籽油作为替代能源生产生物柴油研究进展

Current Journal: International Journal Applied Technology Research Pub Date : 2022-10-01 DOI: 10.35313/ijatr.v3i2.92

H. Budiastuti, Nira Aulia Hanifah, Devita Utami Mardiani, H. Haryadi, R. Rusdianasari, A. Fudholi

{"title":"Biodiesel Production from Rubber Seed Oil as An Alternative Energy Source – A Review","authors":"H. Budiastuti, Nira Aulia Hanifah, Devita Utami Mardiani, H. Haryadi, R. Rusdianasari, A. Fudholi","doi":"10.35313/ijatr.v3i2.92","DOIUrl":"https://doi.org/10.35313/ijatr.v3i2.92","url":null,"abstract":"Biodiesel is one of alternative energies that can be used to overcome problem caused by limited amount of fossil fuels reserved. Biodiesel can be made from rubber seed oil that has high potencies in Indonesia. The availability of rubber seed is quite much with more than 3-million-hectare rubber plantation area. The production of biodiesel from rubber seed oil has been carried out by several researchers using various methods. Therefore, this study was conducted as a review to obtain optimum operation conditions and effect of antioxidant addition in biodiesel production. Production methods of biodiesel from rubber seed oil observed in this study are esterification-transesterification, one stage transesterification, and in situ transesterification methods. Types of antioxidant added to biodiesel from rubber seed oil observed are TBHQ, D-TBHQ, BHA, BHT, PG, and OG. Esterification-transesterification was chosen as the most effective method in producing biodiesel with a minimum yield of 96.4%. Antioxidant addition of TBHQ with 1000 × 10-6 (ω) dosage was selected as the most effective to increase biodiesel induction period to become 6.41 hours, fulfilling the SNI 7182-2015 standard, which is minimum of 6 hours. Standard used as the reference for observing biodiesel parameters is SNI 7182-2015.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128867267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Using mathematical model to design and sizing of pumping water system 应用数学模型对抽水系统进行设计和选型

Current Journal: International Journal Applied Technology Research Pub Date : 2022-04-17 DOI: 10.35313/ijatr.v3i1.62

L. Raji, Y. Gajawa, Aji A. B.

引用次数: 0

The Effect of Inclusion on Crack Propagation Using Extended Finite Element Method 扩展有限元法分析夹杂物对裂纹扩展的影响

Current Journal: International Journal Applied Technology Research Pub Date : 2022-04-17 DOI: 10.35313/ijatr.v3i1.78

L. M. Mauludin, Aji Pratama Rendragraha

{"title":"The Effect of Inclusion on Crack Propagation Using Extended Finite Element Method","authors":"L. M. Mauludin, Aji Pratama Rendragraha","doi":"10.35313/ijatr.v3i1.78","DOIUrl":"https://doi.org/10.35313/ijatr.v3i1.78","url":null,"abstract":"Numerical simulation is developed to investigate the effect of inclusion on crack propagation. In this study, the crack growth is modeled using extended finite element method (XFEM). Two-dimensional rectangular plate with single inclusion embedded off-centered is modeled. The specimen is subjected to uniaxial tension. The dimensions of the specimen are 40 mm x 80 mm and the radius of the inclusion is 10 mm. The specimen is pre-cracked with the length of an edge crack is 5 mm. The motion of the crack is modeled by XFEM based on traction-separation cohesive behavior for 2D mixed mode problem. In addition, enrichment procedure is used to implicitly determine predefined crack in XFEM framework. Two different inclusions, which are soft and hard inclusions, are considered on crack propagation scheme. The effects of soft and hard inclusions on crack propagation are studied and observed. The results showed that the trajectory of crack highly depends on inclusion inside the material. In the case of soft inclusion, propagation of the crack tended to approach the inclusion. Whereas in the case of hard inclusion, crack trajectory tended to move away from the inclusion. The mismatch of elastic modulus between inclusion and surrounded materials has significant effect on propagation of crack.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"30 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125802513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effectiveness of precipitation pH and temperature of Mg/Al Hydrotalcite synthesis on the glucose isomerization Mg/Al水滑石合成过程中沉淀pH和温度对葡萄糖异构化的影响

Current Journal: International Journal Applied Technology Research Pub Date : 2022-04-17 DOI: 10.35313/ijatr.v3i1.55

A. R. Permanasari

{"title":"The effectiveness of precipitation pH and temperature of Mg/Al Hydrotalcite synthesis on the glucose isomerization","authors":"A. R. Permanasari","doi":"10.35313/ijatr.v3i1.55","DOIUrl":"https://doi.org/10.35313/ijatr.v3i1.55","url":null,"abstract":"Mg/Al Hydrotalcite as the catalyst in isomerization of glucose into fructose was made by coprecipitation of Mg(NO3)2.6H2O and Al(NO3)3.9H2O. Operating condition of precipitation including the temperature and pH was determined by Response Surface Method (RSM). The catalyst synthesis was carried out in the mole ratio of Mg/Al 3:1 for 18 h and the catalyst was activated by calcination for 3 h at 500°C. Catalyst characterization was done by FTIR, BET, and XRD. The highest mass product of Hydrotalcite Mg/Al 4.52 g, reached at the precipitation conditions of pH 9 and temperature of 45ºC. The catalytic activity of hydrotalcite Mg/Al was tested by the isomerization of Glucose into Fructose. The highest yield and selectivity were 20.14%, 62.40%, respectively. It was reached in pH 9 and 45ºC. While the highest conversion, 53.47%, was achieved in the pH 11.12 with a precipitation temperature of 45ºC. By the RSM analysis, neither the mass of catalyst product nor the catalytic activity from the isomerization (yield, conversion, and selectivity) were affected significantly by the pH and temperature precipitation.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124812632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantitative Approach to Condensate from Residential Air Conditioners with Different Capacity as Drinking Water 住宅空调不同容量冷凝水作为饮用水的定量分析

Current Journal: International Journal Applied Technology Research Pub Date : 2022-04-17 DOI: 10.35313/ijatr.v3i1.76

K. Sumeru, T. P. Pramudantoro, Afif Miftakh Hafidzudin, Mohamad Firdaus bin Sukri, Cecep Sunardi

{"title":"Quantitative Approach to Condensate from Residential Air Conditioners with Different Capacity as Drinking Water","authors":"K. Sumeru, T. P. Pramudantoro, Afif Miftakh Hafidzudin, Mohamad Firdaus bin Sukri, Cecep Sunardi","doi":"10.35313/ijatr.v3i1.76","DOIUrl":"https://doi.org/10.35313/ijatr.v3i1.76","url":null,"abstract":"During operation, the evaporator of split-type air conditioner (A/C) produces condensate water due to lower evaporator temperature, as compared to dew point temperature of the indoor air. So far, the condensate is considered unimportant and therefore being wasted. The split-type A/C is widely used in high-rise buildings, hotels, shopping areas, and even residential. The study aims to investigate the potential feasibility of the condensate to be used as for drinking water. Of course, treatment of the condensate is required before it can be used as a drinking water. The experiments were carried out in two cities, namely Bandung and Cirebon. Bandung represents a city with a cool climate, while Cirebon represents a city with a hot climate. The capacities of the A/C utilized in Bandung and Cirebon are 0.5 HP and 1 HP, respectively. The quantities of the condensate from the A/C were collected for 24 for hours. The quality of the condensate was benchmarked with guidelines/standard from PERMENKES NO 492/MENKES/PER/IV/2010. The benchmarking process involved testing and evaluation of 22 significant parameters related to water quality for drinking purpose. By utilizing waste condensate water, it is predicted that it can be a vital alternative of potable water in the future","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127195375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Evaluation of Thermoelectric Cooling with Two Difference Fluids Medium 两差流体介质热电冷却性能评价

Current Journal: International Journal Applied Technology Research Pub Date : 2022-04-17 DOI: 10.35313/ijatr.v3i1.74

BowoYuli Prasetyo

{"title":"Performance Evaluation of Thermoelectric Cooling with Two Difference Fluids Medium","authors":"BowoYuli Prasetyo","doi":"10.35313/ijatr.v3i1.74","DOIUrl":"https://doi.org/10.35313/ijatr.v3i1.74","url":null,"abstract":"Thermoelectric has been used in various applications related to cooling systems (TEC). Most researchers focused on expanding the application of TEC and improving heat transfer. The improvement of the heat transfer relied on the configuration, heat exchanger, and fluid medium. However, no previous work has reported the influence of air and water as the fluid’s medium on the TEC performance. Therefore, in this study, the performance of TEC with water and air as working fluids is evaluated experimentally. Besides, several input parameters are controlled to evaluate the TEC performance under different conditions. The results reveal that the variation of working fluid and input parameters influenced the overall TEC output. The increment of TEC cooling capacity is proportional to the input power, mass flow rate, and inlet temperature of the working fluid. While the input power and inlet temperature also vary the heat exchanger thermal resistance. The overall thermal resistance of the water block is averagely ten times lower than that of the heat sink, therefore, the water block is significantly better compared to the heat sink. While the highest COP obtained from the water and air system is 1.72 and 1.41, respectively.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"156 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132090517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation of IoT-Based Temperature and Humidity Conditioning System in Screen House 基于物联网的纱房温湿度调节系统仿真

Current Journal: International Journal Applied Technology Research Pub Date : 2022-04-17 DOI: 10.35313/ijatr.v3i1.54

Wirenda Sekar Ayu, Bowo Prasetyo

{"title":"Simulation of IoT-Based Temperature and Humidity Conditioning System in Screen House","authors":"Wirenda Sekar Ayu, Bowo Prasetyo","doi":"10.35313/ijatr.v3i1.54","DOIUrl":"https://doi.org/10.35313/ijatr.v3i1.54","url":null,"abstract":"Nowadays, various problems have arisen in agricultural sector. One of which is the decline in productivity of farmers' crops up to 40% which is caused by non-optimal environmental conditions during the plant growth process. This is certainly a challenge for Indonesian farmers to be able to continue in supplying the country's needs for high quality agricultural products. The challenges faced by Indonesian farmers do not only come from the environmental conditions of plant growth, but the development of Industry 4.0 technology also plays an important role in the development of agricultural sector in Indonesia. In order to adapt to these technological changes, a solution is needed in the form of an integrated agricultural equipment with Industry 4.0 technologies such as the Internet of Things (IoT). One of which is creating an IoT-based control and monitoring system that will be applied to the screen house. In this research, an IoT-based temperature and humidity conditioning system was designed in the screen house. The system design is modeled and tested through simulation on Vensim software. Based on the simulation results of system design, the screen house internal temperature can be controlled or maintained in the optimal temperature range for tomato plant growth, which is 18–24oC with an offside value of ±0.5oC. The heating capacity or heating rate required in this system is 10oC/hour. The cooling capacity or cooling rate generated to compensate the influence of external temperature and heating effect on the screen house internal temperature is 1–1.8oC/hour. The heating and cooling rate values generated in this research are still need to be converted into fan and pump PWM values to be implemented in a fan- pad evaporative cooling system.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126783961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Homer Software for Cost Analysis of Stand-Alone Power Generation for Small Scale Industry in Nigeria: A Case Study Lumatec Aluminium Products 使用Homer软件进行尼日利亚小型工业独立发电成本分析:以Lumatec铝制品为例

Current Journal: International Journal Applied Technology Research Pub Date : 2021-10-01 DOI: 10.35313/ijatr.v2i2.57

L. Raji, Zhigilla Y.I, J. Wadai

{"title":"Using Homer Software for Cost Analysis of Stand-Alone Power Generation for Small Scale Industry in Nigeria: A Case Study Lumatec Aluminium Products","authors":"L. Raji, Zhigilla Y.I, J. Wadai","doi":"10.35313/ijatr.v2i2.57","DOIUrl":"https://doi.org/10.35313/ijatr.v2i2.57","url":null,"abstract":"Nigeria is one of developing countries in the world that experience shortage of electricity for her economic and social development. In Nigeria, most of the small-scale industries use diesel/petrol-based systems to generate their electricity. However, due to the cost fluctuation of oil and gas fuel, an alternative power generation should be considered. This paper targets to examine the cost analysis of system for supplying electricity to LUMATEC Aluminium products shop in Mubi, Adamawa state Nigeria. Hybrid Optimization Model for Electric Renewable (HOMER) is used as a tool for cost analysis. The scenario consider in this study was only stand-alone with battery system. Results revealed that the system have 10kW PV with cost of electricity (COE) of $0.312/kW. The initial capital cost and total net present cost (NPC) are $21.775 and $26.148 respectively, with payback period of 5.8years. In conclusion, this study provides the solution of power supply to the small-scale industries at cost effective and available throughout the year and it is feasible to solve the small-scale industries, rural and urban electricity supplying in this country (Nigeria). It is recommended that Nigerian Government & Law makers should promotes the use of standalone PV system for domestic and small-scale industry by providing financial assistance through soft loans, subsides and grants.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132541636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Edge Crack in Longitudinal Butt-Welded Joint in Thick-Wall Cylinder 厚壁圆筒纵向对接焊接接头边裂纹

Current Journal: International Journal Applied Technology Research Pub Date : 2021-10-01 DOI: 10.35313/ijatr.v2i2.56

Y. Prawoto, Rachmad Imbang Trittjahjono

{"title":"Edge Crack in Longitudinal Butt-Welded Joint in Thick-Wall Cylinder","authors":"Y. Prawoto, Rachmad Imbang Trittjahjono","doi":"10.35313/ijatr.v2i2.56","DOIUrl":"https://doi.org/10.35313/ijatr.v2i2.56","url":null,"abstract":"Thick-wall vessels and pipes cylindrical shape are very typical in power plant, chemical, processing, oil and gas industry. The equipment with cylindrical shape can be either thin or thick wall which depends on the function of that particular equipment. Typically, thick-wall cylinder is used when the equipment is needed to accommodate high pressure contents. Mostly, cracks appear either on the internal or external of a thick-wall cylinder. Primarily, when welding is applied in the fabrication of the thick-wall cylinder, cracks can easily appear due to solidification or hydrogen embrittlement at the welded joint, typically butt-welded joint. Hence, it is critical to examine the stress distribution along the crack and resolve the stress intensity factor of the cracks in both welded and non-welded internally pressurized thick-wall cylinder. Finite element analysis has been conducted using the engineering software, ABAQUS CAE to investigate the stress distribution and to perform the evaluation of stress intensity factor. Besides, weight function method has also been used by other researchers to determine the factor of stress intensity for both welded and non-welded thick-wall cylinder. The results were compared in terms of both of the methods applied. The last, the effect of the butt-welded joint profile in thick-wall cylinder has also been investigated.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133126656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0