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Seasonal Correlation Between the Atlantic Multiple Oscillation (AMO) and Mediterranean Temperature 大西洋多重涛动(AMO)与地中海温度的季节相关性
Pub Date : 2023-11-08 DOI: 10.51646/jsesd.v12i2.159
Haifa Ben Miloud, Zaher Al Abadla
Numerous studies on the surface of the planet have focused on the role that oceans play in the increase in temperatures brought on by climatic changes. This study has primarily emphasized the long-term warming of the Atlantic Ocean and how it affects the seasonal temperature changes of the Mediterranean Sea as a whole as well as its constituent western, central, and eastern areas. In the fall and summer, a substantial positive connection of roughly (Pearson correlation r= 0.69) and (r=0.65), respectively, between the entire Mediterranean Sea and the AMO is evident, but this correlation declines in the spring and winter. Positive correlation increases in the western portion of the Mediterranean and diminishes in some areas as we move closer to the eastern Mediterranean; it reaches a maximum of (r=0.61) to (r=0.57) in the fall and summer seasons, respectively, and declines in the spring and winter. According to the findings, there is a noticeable increase in water temperature in the fall and summer, particularly in the western Mediterranean, which is influenced by AMO.
许多关于地球表面的研究都集中在海洋在气候变化引起的温度升高中所起的作用上。本研究主要强调大西洋的长期变暖及其如何影响整个地中海及其组成部分西、中、东部地区的季节性温度变化。在秋季和夏季,整个地中海与AMO之间存在显著的正相关关系(Pearson相关r= 0.69)和(r=0.65),但在春季和冬季,这种相关关系减弱。随着我们向地中海东部移动,地中海西部的正相关增加,而在某些地区则减少;在秋季和夏季分别达到最大值(r=0.61) ~ (r=0.57),在春季和冬季逐渐下降。根据调查结果,水温在秋季和夏季明显升高,特别是在地中海西部,这是受AMO的影响。
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引用次数: 0
Electricity from Wastewater Treatment Plants 来自污水处理厂的电力
Pub Date : 2023-09-29 DOI: 10.51646/jsesd.v12i2.156
Abdulhakeem Miskeen, Rahma Elzer, Ibrahim Mangir, Yasser Nassar, Hala J. El-Khozondar, Mohamed M. Khaleel, Abdussalam A. Ahmed, Abdulgader Alsharif, Ibrahim I. Alzayani
Wastewater treatment plants that are located in high places can provide opportunities for generating sustainable energy, by installing hydroturbines at inlet and exit pipes of wastewater treatment plants, as well as exploiting the sludge resulting from the treatment process as a source for generating biogas, which can be used to generate electric power. Then the treated water is used to irrigate ornamental trees in the roads, gardens and forests, as well as the residues of the fermentation process are used as organic fertilizer and to improve the quality of agricultural soil. In this research, a hybrid system consisting of a hydroelectric station and an electric generator working on biogas was proposed at the wastewater treatment plant in Gharyan. This is because the city is distinguished by its high location, about 713 m above sea level. . The obtained results showed that the proposed hybrid renewable energy system will provide the wastewater treatment plant an electric power of 490 kW, which is sufficient to cover 87.5% of the plant's electrical energy consumption. The amount of treated water was about 13,000 m3/day, and the amount of organic fertilizer was about 17 tons/day. The investment value was estimated at about $1,478,000, and the leveized cost of energy LCOE was estimated at about 2.88 ¢/kWh. The annual net profit from the proposed system is estimated at $307,765/year, and the payback time money at 3.44 years. The proposed system will prevent the release of an annual amount of CO2 gas estimated at 1,886 tons.
位于高处的污水处理厂可以通过在污水处理厂的进出口管道上安装水轮机,以及利用处理过程中产生的污泥作为产生沼气的来源,从而提供产生可持续能源的机会,沼气可以用来发电。处理后的水用于灌溉道路、花园和森林中的观赏树木,发酵过程中的残留物用作有机肥和改善农业土壤质量。在这项研究中,在Gharyan的污水处理厂提出了一个由水力发电站和沼气发电机组成的混合系统。这是因为这座城市的地理位置高,海拔约713米。结果表明,所提出的混合可再生能源系统将为污水处理厂提供490 kW的电力,足以覆盖污水处理厂87.5%的电力消耗。处理水量约13000 m3/d,有机肥用量约17吨/d。投资价值估计约为1,478,000美元,能源LCOE的平准化成本估计约为2.88美分/千瓦时。预计该系统的年净利润为307,765美元/年,投资回收期为3.44年。拟议中的系统将防止每年排放约1886吨的二氧化碳气体。
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引用次数: 0
Simulating the Energy, Economic and Environmental Performance of Concentrating Solar Power Technologies Using SAM 利用SAM模拟聚光太阳能发电技术的能源、经济和环境性能
Pub Date : 2023-09-14 DOI: 10.51646/jsesd.v12i2.153
Yasser Nassar, Hala ElKhozondar, Mohammed Abouqeelah, Ahmed Abubaker, Abdulhakeem Miskeen, Mohamed M. Khaleel Khaleel, Abdussalam Ahmed, Abdulgader Alsharif, Monaem Elmnifi
According to the Libyan government's newly released strategic plan, renewable and environmentally friendly energy sources would provide 30% of the country's power by 2030. The goal of this research is to shed light on solar energy technologies that may be used to generate clean and sustainable electricity. An energy-economic-environmental study of five Concentration Solar Power (CSP) technologies (parabolic trough, solar dish, linear Fresnel reflector, solar tower, and concentrated PV solar cell) was conducted for 22 selected locations in Libya. The Levelized Cost Of Energy (LCOE) was chosen as a reference for identifying which technology would be most suited for each site. The economic estimates include the cost of environmental damage caused by carbon dioxide gas (CO2) emissions from fossil-fuel-powered power plants. This technique allows clean and renewable energy to compete fairly in the global energy market, even in countries that produce oil and subsidize electricity. According to the data, the solar mirror technology in Libya has the lowest LCOE of all the technologies evaluated in this study. The LCOE estimates varied from 0.01 to 0.04 dollars per kWh. The clean energy produced by the solar tower surpassed 100 MW, or about 400.332 GWh. Furthermore, the adoption of clean concentrating solar energy technology avoided the discharge of 4,235 tCO2/year/MWp.
根据利比亚政府最新发布的战略计划,到2030年,可再生能源和环保能源将提供该国30%的电力。这项研究的目标是揭示可能用于产生清洁和可持续电力的太阳能技术。在利比亚选定的22个地点对五种聚光太阳能(CSP)技术(抛物面槽、太阳能盘、线性菲涅耳反射器、太阳能塔和聚光光伏太阳能电池)进行了能源经济环境研究。选择平准化能源成本(LCOE)作为确定哪种技术最适合每个站点的参考。经济估算包括由化石燃料发电厂排放的二氧化碳气体造成的环境破坏的成本。这项技术允许清洁和可再生能源在全球能源市场上公平竞争,即使在生产石油和补贴电力的国家也是如此。根据数据,利比亚的太阳镜技术在本研究评估的所有技术中具有最低的LCOE。LCOE估算值从每千瓦时0.01美元到0.04美元不等。太阳能塔产生的清洁能源超过100兆瓦,约400.332千瓦时。此外,采用清洁聚光太阳能技术,避免了4235 tCO2/年/MWp的排放。
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引用次数: 0
Design and implementation of Hybrid Renewable energy (PV/Wind/Diesel/Battery) Microgrids for rural areas. 农村地区混合可再生能源(光伏/风能/柴油/电池)微电网的设计和实施。
Pub Date : 2023-08-24 DOI: 10.51646/jsesd.v12i1.151
Mohamed M G Almihat, Mohamed MTE Kahn
This study examines the variation in sensitivity of a microgrid system comprised of photovoltaics, wind turbines, diesel engines, and batteries. The primary objective is to increase our knowledge of renewable energy resources (RERs) and their technical and economic factors in the context of the conceptual design of a microgrid system. The investigation employs Typhoon HIL software for simulation and testing, concentrating on hybrid PV/Wind/Diesel/Battery systems and devising a perturb & observe (P&O) maximum power point tracking (MPPT) strategy. Additionally, the study investigates the Optimal Power Controlling MPPT technique and the development and implementation of hybrid renewable energy resources (HRES). The Typhoon HIL system is utilized in the power, automotive, and aerospace industries, among others, to simulate and test control systems in real-time. This study presents a control strategy for a microgrid system that combines renewable energy sources such as solar and wind power with reserve power options such as diesel generators and batteries. The coordinated control technique is implemented by employing a centralized control method, effectively managing the flow of electricity from diverse distributed energy resources (DER) and ensuring the microgrid's stability. The findings indicated that the coordinated control method and dynamic models could be utilized to design and optimize microgrid systems. Future research can concentrate on refining the accuracy of the models and verifying the proposed coordinated control method in microgrid systems that operate in the real world.
本研究考察了由光伏、风力涡轮机、柴油发动机和电池组成的微电网系统的灵敏度变化。主要目标是在微电网系统概念设计的背景下,增加我们对可再生能源(res)及其技术和经济因素的认识。调查使用台风HIL软件进行模拟和测试,重点是混合光伏/风能/柴油/电池系统,并设计了一个扰动& &观察最大功率点跟踪(MPPT)策略。此外,研究了最优功率控制MPPT技术和混合可再生能源(HRES)的开发与实现。台风HIL系统用于电力、汽车和航空航天工业等,以实时模拟和测试控制系统。本研究提出了一种微电网系统的控制策略,该系统将可再生能源(如太阳能和风能)与备用能源(如柴油发电机和电池)相结合。协调控制技术采用集中控制的方法,有效地管理来自不同分布式能源(DER)的电流,保证微电网的稳定性。研究结果表明,协调控制方法和动态模型可用于微电网系统的设计和优化。未来的研究可以集中在改进模型的准确性,并在实际运行的微电网系统中验证所提出的协调控制方法。
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引用次数: 0
Carbon and Energy Life Cycle Analysis of Wind Energy Industry in Libya 利比亚风能产业碳和能源生命周期分析
Pub Date : 2023-08-17 DOI: 10.51646/jsesd.v12i1.150
Suhaylah Mohammed Mohammed, Yasser Nassar, Wedad El-Osta, Hala J. El-Khozondar, Abdulhakeem Miskeen, Ali Basha
By analyzing a wide range of energy, economic, and environmental variables for a variety of attractive locations in Libya, the study established the fundamentals of localizing the wind energy business in Libya. The estimate of the greenhouse gas (GHG) emission factor resulting from the conversion of wind energy into electric energy also includes the quantity of GHG emissions from cement manufacturing and transportation, as well as manufacturing (for various wind turbine manufacturers), sea transportation of wind energy equipment from the site of manufacture to the port of Tripoli, land transportation to the location of the wind energy farm, and calculating the energy and emissions used for recycling recyclable materials and for transportation. Hourly climate data over a 25-year period (1995-2020) were gathered from the SolarGis climate information portal. For many viable wind energy production locations in Libya, the System Advisor Model (SAM) software was used to calculate the productivity of wind farms with a 100 MW capacity. The study's findings showed that the Gamesa turbine, whose capital cost was around (146,916,400 dollars), had the best economic and environmental indices. The GHG emission rates for all the cities that were targeted ranged from 24-63g GHG/kWh. The time needed for carbon to recover ranged from 5.5 to 14.5 months. The expected energy payback time was 14 to 22 months. An LCOE's production costs ranged from 4.8 to 11.1 cents per kWh.
通过分析利比亚各种有吸引力的地点的广泛的能源、经济和环境变量,该研究建立了利比亚风能业务本地化的基础。对风能转化为电能所产生的温室气体(GHG)排放因子的估计还包括水泥制造和运输,以及制造(对于各种风力涡轮机制造商),风能设备从制造地点到的黎波里港口的海上运输,到风力发电场所在地的陆路运输,并计算用于回收可回收材料和运输的能源和排放。从SolarGis气候信息门户网站收集了25年(1995-2020年)的每小时气候数据。对于利比亚许多可行的风能生产地点,使用系统顾问模型(SAM)软件来计算100兆瓦容量的风力发电场的生产力。研究结果显示,投资成本约为14万691.64万美元的Gamesa涡轮机具有最佳的经济和环境指标。所有目标城市的温室气体排放量在24-63克温室气体/千瓦时之间。碳恢复所需的时间从5.5到14.5个月不等。预期能源回收期为14至22个月。LCOE的生产成本从每千瓦时4.8到11.1美分不等。
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引用次数: 2
Learning lessons from Murzuq-Libya meteorological station 从穆祖克-利比亚气象站学习经验
Pub Date : 2023-08-11 DOI: 10.51646/jsesd.v12i1.149
Khalil Bakouri, Tareq Foqha, Omar Ahwidi, Ahmed Abubaker, Yasser Nassar, Hala El-Khozondar
In this study, an examination was conducted on weather data gathered from the Murzuq weather station over a period of nine months, specifically focusing on 15-minute time series solar radiation data. The data was sourced from the Center for Solar Energy Research and Studies in Tajoura-Tripoli, through a collaborative agreement between the Faculty of Engineering at Wadi Alshatti University and the research center. The information collected encompassed various solar radiation components, such as global horizontal solar radiation, direct normal radiation, sky-diffuse solar radiation, and ground reflected solar radiation. The aim of this study is to verify calculated values of these components using mathematical models by comparing them with their measured values. The investigation revealed that the Earth's reflectance value for the region was estimated and determined to be around 0.4. It is important to note that this figure was different from the typically advised value of 0.2 that was given in previous literature.
在本研究中,对从Murzuq气象站收集的9个月的天气数据进行了检查,特别关注15分钟时间序列太阳辐射数据。数据来自塔朱拉-的黎波里太阳能研究中心,通过瓦迪阿尔沙蒂大学工程学院与该研究中心的合作协议。收集的信息包括各种太阳辐射成分,如全球水平太阳辐射、直接正常辐射、天空散射太阳辐射和地面反射太阳辐射。本研究的目的是通过将这些成分的计算值与实测值进行比较,利用数学模型来验证这些成分的计算值。调查显示,地球在该地区的反射率值估计在0.4左右。值得注意的是,这个数字与以前文献中给出的通常建议值0.2不同。
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引用次数: 0
An Analysis Study on the Effect of Increasing Carbon Dioxide Gas and Climate Change on Temperatures in Libya 二氧化碳气体增加和气候变化对利比亚气温影响的分析研究
Pub Date : 2023-06-01 DOI: 10.51646/jsesd.v12i1.144
Haifa M. Ben Miloud Ben Miloud, Amel Saad Ashargawi Ashargawi
Carbon dioxide CO2 has been increased in the atmosphere and therefore had a significant impact on global warming on the world. Libya had the share of high temperatures in recent years reached 22.6 0C compared to about 20.9 0C in 1980. It was noted the increase of carbon dioxide over Libya in the time series (1980-2019) has stepped from 338.8 PPM in 1980, to reach 409.6 PPM in 2019. In this study, a statistical analysis of the data to determine the type and strength of the relationship between the two variables, carbon dioxide (CO2 PPM) and temperature (0C), was performed. It showed that there is a percentage of the effect gas carbon dioxide on the temperature up to 32.6%, and the relationship between the variables is positive, and the correlation coefficient is 0.571. Through analysis of variance to test the significance of the quality of the model, there is a linear relationship between the two variables, and the value of t indicates that there is an effect of carbon dioxide on temperatures.
二氧化碳已经在大气中增加,因此对全球变暖产生了重大影响。利比亚近年来的高温达到了22.6摄氏度,而1980年约为20.9摄氏度。值得注意的是,在1980年至2019年的时间序列中,利比亚上空二氧化碳的增加已经从1980年的338.8 PPM上升到2019年的409.6 PPM。在本研究中,对数据进行统计分析,以确定两个变量,二氧化碳(CO2 PPM)和温度(0℃)之间的关系的类型和强度。结果表明,二氧化碳对温度的影响比例高达32.6%,各变量之间呈正相关关系,相关系数为0.571。通过方差分析检验模型质量的显著性,两个变量之间存在线性关系,t的值表明二氧化碳对温度有影响。
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引用次数: 0
Chapter 3 Energy Sources 第三章能源
Pub Date : 2020-12-16 DOI: 10.1515/9781501519772-003
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引用次数: 0
Chapter 1 Introduction to Energy and Development 第一章能源与发展导论
Pub Date : 2020-12-16 DOI: 10.1515/9781501519772-001
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引用次数: 0
Chapter 6 Energy Policy 第六章能源政策
Pub Date : 2020-12-16 DOI: 10.1515/9781501519772-006
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引用次数: 0
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Solar Energy and Sustainable Development
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