Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020)最新文献_第2页

Failure Analysis and Performance Assessment of Tubular Air Heater at PLTU South Sumatra V 中南理工大学南苏门答腊电厂管式空气加热器失效分析与性能评价

Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020) Pub Date : 2021-02-09 DOI: 10.2991/AHE.K.210205.040

Lulu Khoirunnisa, H. Basri

{"title":"Failure Analysis and Performance Assessment of Tubular Air Heater at PLTU South Sumatra V","authors":"Lulu Khoirunnisa, H. Basri","doi":"10.2991/AHE.K.210205.040","DOIUrl":"https://doi.org/10.2991/AHE.K.210205.040","url":null,"abstract":"Tubular air heater has a design operational lifespan limit. This lifespan limit, if not monitored and controlled, can accelerate any damage. Tubular air heater damage will result in tube failures that affect the boiler heat transfer system and emission control. This research aims to find out the root cause of tube failure. This research analyses the physical failure mechanism related to the material: chemical composition test, hardness test, tensile test, metallography examination, SEM-EDX examination, and x-ray diffraction analysis. The failure mode analysis concluded that the tubes were attacked by sulphuric acid condensation due to the air heater tubes temperature drops below the sulphuric acid dew point temperature. The existing tubes material is Corten Steel, which has good atmospheric resistance but low in the acidic environment. One thousand two hundred tubes replaced with ND Steel, the ideal steel for sulphuric acid-resistant and 3,986 tubes used carbon steel. There is no air heater performance degradation after tubes replacement, indicated after two weeks outages at high load. The leakage significantly decreases from 64% to approximately 19%.","PeriodicalId":310770,"journal":{"name":"Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128720818","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

Drying Rate of Skim Milk From Virgin Coconut Oil Remaining Water 从初榨椰子油中提取的脱脂乳的干燥速率

Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020) Pub Date : 2021-02-09 DOI: 10.2991/AHE.K.210205.016

A. Hasan, I. Purnamasari, M. Yerizam, R. Junaidi

{"title":"Drying Rate of Skim Milk From Virgin Coconut Oil Remaining Water","authors":"A. Hasan, I. Purnamasari, M. Yerizam, R. Junaidi","doi":"10.2991/AHE.K.210205.016","DOIUrl":"https://doi.org/10.2991/AHE.K.210205.016","url":null,"abstract":"Coconut tree’s benefits were not only in flesh that can be processed into coconut milk, copra, and coconut oil but also in all part of coconut plants. Coconut oils were produced from dried coconut by extraction. The oil from this process is known as virgin coconut oil (VCO). During the VCO production, coconut residue (left after removing the coconut milk), coconut skim milk (CSM) and insoluble protein are the main by-products. By product such as skim milk and insoluble protein in coconut have been used to increase products value, which is used as a low protein healthy drink. This study aims to determine the drying rate in producing of CSM using a dryer. VCO remaining water is fed into the vacuum freeze dryer, the drying temperature is maintained (-10 ̊C) – (-25 C) with drying time of 12 hours and 13 hours. The results show that the lower temperature and the longer time drying, the slower drying rate. The highest levels protein were at the drying time for 13 hours with a drying temperature of -25 C, namely 36.28% with water content contained in the CSM of 5.49%. The drying rate obtain 2.53 – 2.54 gram per hour in every driying times and temperatures.","PeriodicalId":310770,"journal":{"name":"Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122316168","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

Contingency Analysis on 150 kV Electricity Power System on The Madura Island Based on The 1P1Q Method 基于1P1Q法的马杜拉岛150kv电力系统应急分析

Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020) Pub Date : 2021-02-09 DOI: 10.2991/AHE.K.210205.036

M. Falah, Sujito, I. M. Wirawan

{"title":"Contingency Analysis on 150 kV Electricity Power System on The Madura Island Based on The 1P1Q Method","authors":"M. Falah, Sujito, I. M. Wirawan","doi":"10.2991/AHE.K.210205.036","DOIUrl":"https://doi.org/10.2991/AHE.K.210205.036","url":null,"abstract":"A major factor in the power system operation is the desire to maintain system security. System security involves a design to keep the system operating in the event of interference or failure. Interferences in electrical power systems are divided into generator, transmission, and load. Failure or interference of the transmission network results in a contingency of the transmission lines that can cause voltage in the bus and overload in the transmission lines, so it is very necessary to overcome the problem with a contingency analysis simulation to find solutions to problems caused by the disconnection of the transmission line. One of the contingency analysis methods is the 1P1Q (performance contingency index) method where the 1P1Q method lists the worst contingency impact on the electric power system to help engineers to solve problems and determine their next steps when contingencies occur. In the study, the Newton raphson's methods were used to determine the power flow in electrical systems at normal conditions or contingency. Calculating the value of the contingency index in times of interference or failure using the 1P1Q method. The results show that the worst impact or highest-ranking performance index for the Madura 150 kV electric power system occurs in the infinity-base scenario where two lines are overloaded and exceed the maximum value limit of the transmission line power of the infinity-gilitimur channel of 157.5 MW with a maximum value limit transmission line of 92,359 MW and gilitimur-bangkalan of 149 MW with a maximum value limit of transmission line of 88,616 MW. So there is prevention with load shedding of 87,638 MVA with scenario 6 in table 4:24 of load shedding on the bus Sampang, Sumenep, Pamekasan because by shedding loads of 95,528 MVA the power flowing at infinity-gilitimur becomes 72.9 MW.","PeriodicalId":310770,"journal":{"name":"Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020)","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114680769","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

Implementation of Fuzzy Logic Type-2 on Mobile Robot Navigation System 模糊2型逻辑在移动机器人导航系统中的实现

Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020) Pub Date : 2021-02-09 DOI: 10.2991/AHE.K.210205.101

A. Handayani, Sarjana, Jefri Al-Kausar, N. Husni

引用次数: 0

Study of Capacitor Placement to Improve the Voltage Profile in Contingency Conditions of the 150 kV Madura Electricity Power System 马杜洛拉150千伏电力系统应急条件下电容器配置改善电压分布的研究

Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020) Pub Date : 2021-02-09 DOI: 10.2991/AHE.K.210205.025

Sujito, M. Falah, M. R. Faiz

{"title":"Study of Capacitor Placement to Improve the Voltage Profile in Contingency Conditions of the 150 kV Madura Electricity Power System","authors":"Sujito, M. Falah, M. R. Faiz","doi":"10.2991/AHE.K.210205.025","DOIUrl":"https://doi.org/10.2991/AHE.K.210205.025","url":null,"abstract":"The contingency is a very important issue in the electricity power system security. The contingency impact can change voltage, particularly the voltage drop on the load bus. This condition can have an impact on the quality of power supplied to the load, system reliability, and system security. The solution to overcome the voltage drop is to improve the voltage profile through the injection of reactive power sources into the system. This study focuses on improving the stress profile when a contingency occurs in the electricity power system. The stabilization profile is improved by placing the capacitor in distribution and centrally on the electricity power system. Newton Raphson method is used to determine the power flow and voltage on each bus normal and contingency conditions. The results showed that the worst undervoltage impact occurred in scenario 7 where the value of the Sumenep bus voltage decreased to 132.4 kV and the value of the bus voltage of Pamekasan was 131.8 kV. the centralized capacitor placement method is carried out on the Sumenep bus with an injection of a negative power of 24.93 MVAR. the centralized capacitor placement method can increase the bus voltage profile above the standard minimum value used. the distributed capacitor placement method is carried out by measuring the reactive power on each bus Sumenep 24.93 MVAR, Sampang 29.78 MVAR, Bangkalan 50.85 MVAR, Gilitimur 67.41 MVAR. The results of the voltage profile show that the voltages of all load buses are above the standard. The voltage standard used is the Regulation of the Minister of Energy and Mineral Resources CC2.0: 2007 with a minimum voltage limit of -10%.","PeriodicalId":310770,"journal":{"name":"Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020)","volume":"36 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133474233","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

Production of Green Diesel From Crude Palm Oil (CPO) Through Hydrotreating Process by Using Zeolite Catalyst 沸石催化剂加氢处理粗棕榈油生产绿色柴油

Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020) Pub Date : 2021-02-09 DOI: 10.2991/AHE.K.210205.013

A. Zikri, Indah Puspita, Erlinawati, M. S. PLAgus, PB Elbi Zalita, K. Andre

{"title":"Production of Green Diesel From Crude Palm Oil (CPO) Through Hydrotreating Process by Using Zeolite Catalyst","authors":"A. Zikri, Indah Puspita, Erlinawati, M. S. PLAgus, PB Elbi Zalita, K. Andre","doi":"10.2991/AHE.K.210205.013","DOIUrl":"https://doi.org/10.2991/AHE.K.210205.013","url":null,"abstract":"Green diesel is an alkane compound produced from vegetables oil by hydrogenation which has properties similar to diesel fuel. The ingredients that can be converted into green diesel is Crude Palm Oil (CPO). Green diesel is produced using a catalytic hydrogenation process with 10-30 psia hydrogen injection, the use of natural zeolite catalysts with the variation of catalyst by 1 wt%, 2 wt%, 3 wt% and 4 wt%, and temperatures of 350°C, 375°C, and 400°C for 3 h. The purpose of this research is to obtain optimum conditions in the process of hydrotreating CPO into green diesel. The use of 3 wt% of zeolite catalyst at 400°C and H2 pressure 30 psia was the optimum condition in this study and resulted in a yield percentage of 37.30%. The physical properties of green diesel obtained from this study include density (782.41–807.99 kg/m3), kinematic viscosity (2.24–2.53 cSt), and flash point (55.1–58.5°C). The green diesel specifications obtained have fulfill Green Diesel European Standard (The National Standards Authority of Ireland,","PeriodicalId":310770,"journal":{"name":"Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126061178","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: 2

Black Box Testing Using Equivalence Partition Method in Sintana Application 在Sintana应用中使用等价分区方法进行黑盒测试

Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020) Pub Date : 2021-02-09 DOI: 10.2991/AHE.K.210205.089

Yayuk Ike Melani, Mahmud

引用次数: 2

Characterization of Thermal Activated Fly Ash Adsorbent by Studying the Effect of Temperature 研究温度对热活化粉煤灰吸附剂性能的影响

Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020) Pub Date : 2021-02-09 DOI: 10.2991/AHE.K.210205.015

Aida Syarif, Rusdianasari, M. Yerizam, Sayhirmanyusi

{"title":"Characterization of Thermal Activated Fly Ash Adsorbent by Studying the Effect of Temperature","authors":"Aida Syarif, Rusdianasari, M. Yerizam, Sayhirmanyusi","doi":"10.2991/AHE.K.210205.015","DOIUrl":"https://doi.org/10.2991/AHE.K.210205.015","url":null,"abstract":"Fly ash is a solid waste resulting from the use of coal as an energy resource. The potential for fly ash presence in Indonesia is considerable with increased coal consumption where the potential availability of coal ash is 10% of total coal consumption, with 80% details being fly ash. The increase in energy needs in Indonesia will have an impact on the increasing need for coal. Coal production in Indonesia in 2015 amounted to 461 million tons, by 2020 targeted coal production of 550 million tons (ESDM 2020). The potential for coal as an energy resource provides opportunities for the potential presence of fly ash. The chemical composition of fly ash coal ash consists of compounds SiO2, CaO, MgO. From the chemical composition contained in this fly ash, researchers studied the manufacture of fly ash as the raw material of adsorbents with methods thermal activated. In this study the parameters analyzed are the effect of activation temperature and length of time. From the results of the study, the temperature and activation time affects the characteristics of adsorbent from coal ash it can be seen the number of iodine increases in line with the increase in temperature, namely at a temperature 250C and 350C iodine number are 635 mg/Kg and 930 mg/ Kg.","PeriodicalId":310770,"journal":{"name":"Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122325703","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: 2

Wireless Detector for Lung Sound Disorder Based on DSP TMS320C6416T Module 基于DSP TMS320C6416T模块的肺音障碍无线检测仪

Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020) Pub Date : 2021-02-09 DOI: 10.2991/AHE.K.210205.102

N. Husni, Arganda Meranda, D. A. Pratama, E. Prihatini, Selamat Muslimin, A. Handayani

{"title":"Wireless Detector for Lung Sound Disorder Based on DSP TMS320C6416T Module","authors":"N. Husni, Arganda Meranda, D. A. Pratama, E. Prihatini, Selamat Muslimin, A. Handayani","doi":"10.2991/AHE.K.210205.102","DOIUrl":"https://doi.org/10.2991/AHE.K.210205.102","url":null,"abstract":"Lung sound disorder can be one of the signs that indicate the human respiratory problems. The conventional stethoscope can be used to determine the imperfection of the lung; however, it only depends on the ability of hearing. When someone’s has problem of hearing, they cannot use this device. In addition, the sound of the conventional stethoscope sometimes cannot be heard clearly. This paper proposed a digital stethoscope that can be visualized. This research focuses on the ability of the system to transfer the signal sound into digital display that can be monitored in mobile phone. In this research, the recorded data of lung sound is stored in the PC using the ‘record sound’ program. The data was then analyzed using the waveform graph time-domain, FFT Power Spectrum, STFT Spectrogram and Wavelet Scalogram. For the communication between DSP TMS320C6416T and LabView 2012, a LabView 8.6 is used. In this research, the authors also use NodeMCU ESP826 as the Access Point of the communication. On the other hand, for generating the communication between the LabView and NodeMCU, the author used VISA (Virtual Instrument Software Architecture) of LabView 2012. From experiment to 6 patients, it can be found that the proposed device can run well and can visualize the normal lung with the frequency of 300 Hz – 600 Hz.","PeriodicalId":310770,"journal":{"name":"Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127508825","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

Water Quality Monitoring System in Guorami Fish Cultivation Based on Microcontroller 基于单片机的果拉米鱼养殖水质监测系统

Proceedings of the 4th Forum in Research, Science, and Technology (FIRST-T1-T2-2020) Pub Date : 2021-02-09 DOI: 10.2991/AHE.K.210205.022

Sujito, Abdullah Iskandar Syah, I. Zaeni, Danny Mayrawan, Muhammad Solihul Hadi, I. M. Wirawan, Faiz Syaikhoni Aziz

引用次数: 2