Evergreen最新文献_第8页

Critical Overview and Challenge of Representative LNG-Fuelled Ships on Potential GHG Emission Reduction 代表性lng船舶对潜在温室气体减排的关键概述与挑战

Evergreen Pub Date : 2023-09-01 DOI: 10.5109/7151729

None Dian Purnama Sari, Tuswan Tuswan, Teguh Muttaqie, Meitha Soetardjo, None Totok Tri Putrastyo Murwatono, Ridwan Utina, Yuniati Yuniati, None Aditya Rio Prabowo, Saefulloh Misbahudin

引用次数: 0

Effect of Storage Time of Boosted Pertalite Fuel on Its Physical Properties to Improve Performance on a Single Cylinder 108.2 cc Petrol Engine 增压钙石燃料贮存时间对提高单缸108.2 cc汽油机性能的影响

Evergreen Pub Date : 2023-09-01 DOI: 10.5109/7151763

None Wardoyo, None D A Wulandari, Rahmat Firdaus, None Eko Arif Syaefudin

引用次数: 0

Development of Automatic Calibration System for Solid-State DC Voltage Standards and Its Validation 固态直流电压标准自动校准系统的研制与验证

Evergreen Pub Date : 2023-09-01 DOI: 10.5109/7151768

Miftahul Munir, Muhammad Azzumar, Mohamad Syahadi, Hadi Sardjono, Asep Hapiddin, Lukluk Khairiyati, Hayati Amalia, None Nibras Fitrah Yayienda, None Ashri Khusnul Chotimah Alwahid Setiawan, Agah Faisal

{"title":"Development of Automatic Calibration System for Solid-State DC Voltage Standards and Its Validation","authors":"Miftahul Munir, Muhammad Azzumar, Mohamad Syahadi, Hadi Sardjono, Asep Hapiddin, Lukluk Khairiyati, Hayati Amalia, None Nibras Fitrah Yayienda, None Ashri Khusnul Chotimah Alwahid Setiawan, Agah Faisal","doi":"10.5109/7151768","DOIUrl":"https://doi.org/10.5109/7151768","url":null,"abstract":": A manual calibration system for the solid-state DC voltage standard has been established at the National Measurement Standard (SNSU-BSN). The manual calibration was time-consuming, fatiguing, and difficult to collect data. To improve this measurement process, SNSU-BSN has developed an automatic calibration system for solid-state DC voltage standards using programmable software for data acquisition and a low thermal scanner for switching during the measurement. A differential measurement method is performed for automatic calibration system in 1.018 V and 10 V. This automatic calibration system has been validated with manual calibration mode for measurement repeatability in same environmental condition. The result shows that the standard uncertainties of repeatability for automatic and manual calibration at a nominal voltage of 1.018 V are 0.0035 μV and 0.0071 μV, and for a nominal voltage of 10 V are 0.090 μV and 0.038 μV, respectively. The normalized error (En number) values of nominal voltage 1.018 V and 10 V are less than 1, stating that the results of automatic and manual measurements are in good agreement. Therefore, the automatic measurement system can be applied to replace the manual process of measurement at SNSU-BSN since this method is faster and has better uncertainty values.","PeriodicalId":12085,"journal":{"name":"Evergreen","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135691591","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

Fuel Demand Analysis on the Optimization of Sustainable Electricity System Expansion Planning 2021-2050 in West Kalimantan 西加里曼丹2021-2050年可持续电力系统扩容规划优化的燃料需求分析

Evergreen Pub Date : 2023-09-01 DOI: 10.5109/7151717

None Arief Heru Kuncoro, None Pramudya, None La Ode M. A. Wahid, Joko Santosa, Agus Nurrohim, None Aminuddin, None Nurry Widya Hesty, None Silvy Rahmah Fitri

引用次数: 0

Small-Scale Organic Rankine Cycle Performance Using an Additional Heat Exchanger 使用附加热交换器的小型有机朗肯循环性能

Evergreen Pub Date : 2023-09-01 DOI: 10.5109/7151720

Dwika Budianto, Budi Ismoyo, None Cahyadi, Euis Djubaedah, Arnas Lubis, None M. Idrus Alhamid

{"title":"Small-Scale Organic Rankine Cycle Performance Using an Additional Heat Exchanger","authors":"Dwika Budianto, Budi Ismoyo, None Cahyadi, Euis Djubaedah, Arnas Lubis, None M. Idrus Alhamid","doi":"10.5109/7151720","DOIUrl":"https://doi.org/10.5109/7151720","url":null,"abstract":": The Organic Rankine Cycle (ORC) power generation system is a unique approach to heat recovery which substitutes an organic fluid with a low boiling point for water. To improve its lower thermal efficiency and maximum power generation, an Internal Heat Exchanger (IHE) is proposed after the expansion scroll expander. Using a small-scale scroll expander ORC testing facility as the simulation model, this study analyzes the net thermal efficiency and energy consumption of the ORC system with and without the IHE under conditions of equivalent power output. While the working fluid's outlet temperature in the evaporator was adjusted from 70 to 130 degrees Celsius, the outlet condenser temperature was kept constant at 55, 60, and 65 degrees Celsius. In the numerical simulation of the small-scale ORC, five distinct working fluids, including R245fa, R123, R1233zd, n-Pentane, and R141b were assessed. The results indicated that R245fa had the largest recuperation effect on the working fluid, followed by n-Pentane, R1233zd, R123, and R141b, with a total thermal energy reduction of 3.34 kW, 2.63 kW, 2.06 kW, 1.9 kW, and 0.92 kW, respectively. In conclusion, the installation of IHE in ORC units leads to improved thermal","PeriodicalId":12085,"journal":{"name":"Evergreen","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135691594","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 Test of 1 kW PEM Fuel Cell System to Determine Its Empirical Model 1kw PEM燃料电池系统性能试验，确定其经验模型

Evergreen Pub Date : 2023-09-01 DOI: 10.5109/7151761

Khotimatul Fauziah, None Kurniawan, Asih Kurniasari, Yuli Astriani, Bayu Samodra, Didik Rostyono, None Eniya Listiani Dewi

{"title":"Performance Test of 1 kW PEM Fuel Cell System to Determine Its Empirical Model","authors":"Khotimatul Fauziah, None Kurniawan, Asih Kurniasari, Yuli Astriani, Bayu Samodra, Didik Rostyono, None Eniya Listiani Dewi","doi":"10.5109/7151761","DOIUrl":"https://doi.org/10.5109/7151761","url":null,"abstract":": The proton exchange membrane fuel cell (PEMFC) has a higher power density, so it is suitable to be utilized for powering electric vehicles (EVs) and supporting the grid’s power balance and voltage stability. As its load will vary during operation, the PEMFC system have to manage the fuel feed following load variations. In this study, a dead-end anode-type PEMFC system with a rated power of 1 kW is used to investigate its performance under current loading rates of 0–28 A in steady-state conditions. From the test results, the empirical models were derived and simulated in MATLAB. The test is conducted by measuring the PEMFC stack’s current, voltage, hydrogen flow rate, and purging behavior. The experimental results show a nonlinear correlation between stack current and voltage as well as its efficiency of hydrogen consumption to the electricity generated. The hydrogen flow rate exhibits a linear relationship to the generated power output in normal operation, neglecting the purging flow rate. Meanwhile, the total consumed hydrogen, including purging process, performs an exponential result which indicates more hydrogen was consumed for purging. Moreover, the observed purging behavior shows that the load current affects the purging interval time in an exponential decay manner. Some possible control methods are then discussed to control the hydrogen flow that dynamically follow the load variation and enable a not-complete purge; thus, the hydrogen consumption could be optimized and the excess hydrogen during the purging could be minimized.","PeriodicalId":12085,"journal":{"name":"Evergreen","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135691596","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

Preparation And Characterization of MCM-41 Membrane for Biogas Purification MCM-41沼气净化膜的制备及性能研究

Evergreen Pub Date : 2023-09-01 DOI: 10.5109/7151735

Hens Saputra, Dwi Husodo, None SD. Sumbogo Murti, None Semuel Pati Senda

引用次数: 0

A Method to Present the Uniqueness for Uniform Program Applied in Irrigation Telecontrol 一种用于灌溉遥控的统一程序的唯一性表示方法

Evergreen Pub Date : 2023-09-01 DOI: 10.5109/7151719

Tatik Maftukhah, Sensus Wijonarko, None Purwowibowo, Dadang Rustandi, None Mahmudi, None Siddiq Wahyu Hidayat, None Jalu A. Prakosa, Emir Kartarajasa, None Ivan Mangaratua Siburian

引用次数: 0

Investigation of the Compositional Raw Mixtures for Preparation of the Sintered Microporous Material and Mineral Feed Additives 烧结微孔材料及矿物饲料添加剂合成原料的研究

Evergreen Pub Date : 2023-09-01 DOI: 10.5109/7151675

Sarsenbek Montayev, Nurgul Montayeva, Ainur Taudaeva, Muratbai Ryskaliyev, Sabit Zharylgapov

引用次数: 0

Life Cycle Assessment of a Water Treatment Plant based on Non-Conventional Moving Bed Biofilm Reactor Process 基于非常规移动床生物膜反应器工艺的水处理厂生命周期评价

Evergreen Pub Date : 2023-09-01 DOI: 10.5109/7151687

Shradha Sarraf, Surinder Deswal

引用次数: 0