2021 12th International Renewable Energy Congress (IREC)最新文献_第5页

Effect of impurity addition on the dry reforming of methane reaction in the presence of CoxNiyMgzAl2 catalysts CoxNiyMgzAl2催化剂存在下杂质添加对甲烷干重整反应的影响

2021 12th International Renewable Energy Congress (IREC) Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624901

M. Chaghouri, S. Hany, F. Cazier, L. Tidahy, C. Gennequin, E. Abi-aad

{"title":"Effect of impurity addition on the dry reforming of methane reaction in the presence of CoxNiyMgzAl2 catalysts","authors":"M. Chaghouri, S. Hany, F. Cazier, L. Tidahy, C. Gennequin, E. Abi-aad","doi":"10.1109/IREC52758.2021.9624901","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624901","url":null,"abstract":"The composition of a biogas produced in a landfill was analyzed using gas chromatography. Major compounds, such as CH4 and CO2, and minor compounds, such as volatile organic compounds (VOCs), were identified and quantified. Cobalt and nickel based materials synthesized using coprecipitation method were tested in the dry reforming of methane reaction (DRM). Toluene was selected as model molecule for VOCs. 12h-stability tests at 750°C were performed in the presence or absence of toluene in order to mimic the effect of volatile organic compounds found in biogas. Several concentrations of toluene were used during the DRM tests. The effect of this molecule on the catalytic performance was determined. Used samples were characterized by thermal analysis (DTA-TG) and scanning electron microscopy (SEM). Results showed that even though the presence of toluene did affect the activity and selectivity of the catalyst to the DRM reaction, it did not cause the direct deactivation of the material. It was concluded that the valorization of biogas in the DRM reaction is possible even before it has completed its upgrading process.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127231311","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

Improving the Efficiency of Switched Reluctance Motors of Electric Cars Using Sigmoid Torque Sharing Function 利用Sigmoid转矩共享功能提高电动汽车开关磁阻电机效率

2021 12th International Renewable Energy Congress (IREC) Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624935

Abdullah Albarghouthi, Mohammad Alsharayrai, A. Harb

引用次数: 0

On Grid Techno- Economic Evaluation of pv/wind Hybrid system for A Compound building: Simulation Study 某复合建筑光伏/风能混合系统的电网技术经济评价:仿真研究

2021 12th International Renewable Energy Congress (IREC) Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624836

A. Elbreki, N. A. Adbulsalam, F. Mohamed

{"title":"On Grid Techno- Economic Evaluation of pv/wind Hybrid system for A Compound building: Simulation Study","authors":"A. Elbreki, N. A. Adbulsalam, F. Mohamed","doi":"10.1109/IREC52758.2021.9624836","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624836","url":null,"abstract":"This study aimed to design and sizing a compound building includes a motel, gas station, and a mosuqe as case study located at Teka town 35km from the west of Libya, Benghazi. The loads were estimated virtually based on 24 hours of working hour. Load total load of electric application for [motel, mosque, and gas station] were found to be 18.3 kW. A hybrid system designing of the proposed compound building was carried out. The economic analysis of the hybrid system was taken in our consideration. At the same time, the wining scenario which produce less CO2 emissions to preserve the environment was evaluated. In order to achieve the aims of this study, three different gird’s tariff scenarios, ranges between (A=20, B=25, and C= 30 cents) were simulated. From the obtained results we can conclude that the wining case has the lowest NPC and COE. Therefore, scenario (A) was the cheapest configuration for 25 years of the project life cycle among the other scenarios which has 1kw wind turbines with solar energy of 15. 1kw.This configuration has COE of 0.149 USD/kWh and NPC value of 79,803 USD when Grid sales tariff is 20 cents/ KWh.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134380533","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

Discrete time model of DC-DC buck converter based on the Euler forward difference 基于欧拉正演差分的DC-DC降压变换器离散时间模型

2021 12th International Renewable Energy Congress (IREC) Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624880

B. S., A. A., B. M, Sbita L.

引用次数: 2

An AC/DC switch mode power supply based on half bridge DC/DC converter for low power applications 一种基于半桥DC/DC变换器的低功耗交流/直流开关电源

2021 12th International Renewable Energy Congress (IREC) Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624938

Harith Al-Badrani, Y. Ameen, Mohamed N. Abdul Kadir

引用次数: 0

Bypass Diode Faults Analysis of Multi Crystalline PV Module Based on Electrical Characteristics Behaviors 基于电特性行为的多晶光伏组件旁路二极管故障分析

2021 12th International Renewable Energy Congress (IREC) Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624819

Olfa Bel Hadj Brahim Kechiche, Marwa Abiadh

引用次数: 1

Transient analysis of a variable-mode adsorption chiller 变模吸附式冷水机的瞬态分析

2021 12th International Renewable Energy Congress (IREC) Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624924

Ahmad A. Alsarayreh, A. Al-Maaitah, M. Attarakih, H. Bart

{"title":"Transient analysis of a variable-mode adsorption chiller","authors":"Ahmad A. Alsarayreh, A. Al-Maaitah, M. Attarakih, H. Bart","doi":"10.1109/IREC52758.2021.9624924","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624924","url":null,"abstract":"Adsorption cooling has high potential as a technology for saving energy and reducing greenhouse gas emissions. It can also be driven through low-temperature levels obtained from solar thermal collectors or waste heat. However, it has low relative performance at high ambient or re-cooling temperature as compared to its performance at lower temperatures. Adsorption cooling has a high heat rejection rate from the condensation and adsorption processes; due to this reason, it becomes difficult to maintain a low re-cooling temperature with an air-cooled adsorption system. Therefore, the concept of variable-mode adsorption chiller was proposed to evaluate the chiller output at different re-cooling temperatures. For performance evaluation of the proposed adsorption chiller, transient re-cooling temperature conditions were employed along with four proposed modes; single-stage mode, short and medium recovery modes, and variable mode which represent a combination of these modes. In addition, the cycle stability during shifting from one mode to another was investigated. The modeling results showed that the proposed chiller needs one cooling cycle to reach the steady-state after shifting from single-stage mode to mass recovery mode and three cooling cycles while shifting from mass recovery mode to single-stage mode. Furthermore, the variable-mode chiller has the highest averaged annual cooling capacity compared to other modes at Dubai weather conditions, while the single-stage has the highest averaged annual COP followed by variable, short and medium mass recovery modes respectively at same conditions.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127890069","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 effect of the phase change material on the hydric response of a building during the summer season of Tunisia 相变材料对突尼斯夏季建筑水力响应的影响

2021 12th International Renewable Energy Congress (IREC) Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624838

Nour Lajimi, Noureddine Boukadid

{"title":"The effect of the phase change material on the hydric response of a building during the summer season of Tunisia","authors":"Nour Lajimi, Noureddine Boukadid","doi":"10.1109/IREC52758.2021.9624838","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624838","url":null,"abstract":"The best way to reduce the energy needs of a building is to reduce losses and therefore improve the thermal insulation of the walls. The study of the thermal inertia of buildings is a subject of major interest. Thermal insulation can significantly modify the thermal inertia of the building and is one of the solutions to improve the energy efficiency of the envelope. Ceiling insulation is considered the most effective solution given the amount of solar radiation to which this wall is exposed in summer. The aim of this work is to study the one-dimensional heat and mass transfer through a ceiling wall containing micro-encapsulated PCM (phase change concrete) under realistic climatic conditions based on meteorological data. This work relates to a numerical study based on the nodal method to predict the influence of the thickness of the MCP on the temperature of the interior air of a multilayer wall and on the energy consumption to maintain the desired set temperature in a building and the effect of the phase change on the hydric response for the summer period associated with the composite building envelope.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133930040","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

Optimal energy management of smart grid connected residential PV power system 智能并网住宅光伏发电系统的最优能量管理

2021 12th International Renewable Energy Congress (IREC) Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624892

Hasanain H. Shakir, M. A. Zdiri, F. B. Salem

引用次数: 2

Energy Efficiency of Integrating Phase Change Materials in the Roof of Building in Tunisia 突尼斯建筑屋顶集成相变材料的能效研究

2021 12th International Renewable Energy Congress (IREC) Pub Date : 2021-10-26 DOI: 10.1109/IREC52758.2021.9624906

Nour Lajimi, Noureddine Boukadid

引用次数: 0