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Phase Behavior Measurement and Modeling of Gas-to-Liquids and Alaska North Slope Crude Oil Blends 气-液和阿拉斯加北坡原油混合物相行为测量和建模
Pub Date : 2005-06-01 DOI: 10.1080/00908310490450656
Amit P. Sharma, A. Dandekar, G. Chukwu, S. Khataniar, S. Patil, William F. Haslebacher, J. Chaddock
The feasibility of transporting gas-to-liquids (GTL) products (natural gas chemically converted to liquid hydrocarbons) through an existing oil pipeline—the Trans Alaska Pipeline System (TAPS)—for bringing value to Alaska's vast stranded natural gas resources is currently being investigated. As part of this major project, the phase behavior measurement and modeling of GTL and Alaska North Slope crude (ANSC) oil blends have been carried out. The saturation pressures for various types of GTL and ANSC oil blends were measured in a conventional windows based PVT apparatus. The phase behavior of GTL and ANSC oil blends were also modeled by the Peng-Robinson and Soave-Redlich-Kwong equations-of-state. The measured and modeled saturation pressures were found to be in close agreement. The results also indicated that the GTL and ANSC oil blends would always exist as single-phase liquid under the current TAPS operating conditions.
目前正在研究通过现有的输油管道——跨阿拉斯加管道系统(TAPS)——运输气液(GTL)产品(天然气化学转化为液态碳氢化合物)的可行性,以为阿拉斯加大量搁浅的天然气资源带来价值。作为这一重大项目的一部分,GTL和阿拉斯加北坡原油(ANSC)混合油的相行为测量和建模已经进行。在传统的基于窗口的PVT装置上测量了各种类型的GTL和ANSC混合油的饱和压力。GTL和ANSC混合油的相行为也用Peng-Robinson和sove - redlich - kwong状态方程来模拟。实测的饱和压力和模拟的饱和压力非常吻合。结果还表明,在目前的TAPS操作条件下,GTL和ANSC油混合物始终以单相液体的形式存在。
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引用次数: 1
A Review of: “The Chemistry of Alberta Oil Sands Bitumens and Heavy Oils” “阿尔伯塔油砂、沥青和重油的化学性质”综述
Pub Date : 2005-06-01 DOI: 10.1080/00908310590967283
J. Speight
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引用次数: 1
Reconstruction of the Paleoenvironment of the Lignite Deposit at Pontokomi (Sector 6), Ptolemaida Basin, Greece, Based on Its Maceral Composition 希腊Ptolemaida盆地Pontokomi(6段)褐煤矿床的矿物组成及其古环境重建
Pub Date : 2005-06-01 DOI: 10.1080/009083190518998
P. Antoniadis, S. M. Abatzi, E. Mavridou, T. Gentzis
The lignite deposit at Pontokomi (Sector 6) in the Ptolemaida Basin of Greece was studied petrographically so that the conditions that prevailed in the paleo-environment could be analyzed. The above deposit is situated in the northwestern part of the broader basin of Ptolemaida in Macedonia, Greece. It consists of alternating beds of lignite and interbedded strata. The interburden is made of clay marls, occasionally enriched in sand. Thirty-seven samples of lignite were taken for analysis from two representative coreholes (Δ3 and Δ5) located in the central part of the lignite deposit. The study showed that macerals of the huminite group were dominant, followed by inertinite macerals. Liptinites made up a small percentage of the total population. Densinite, attrinite, eu-ulminite, corpohuminite and detrogelinite were the most abundant huminite group macerals, respectively. Inertodetrinite and fusinite were the dominant inertinite macerals, while sporinite and resinite were the predominant litpinite macerals. Mineral matter consisted mainly of clays, carbonates and pyrite. Detailed maceral analysis allowed us to obtain indices related to the wetness in the peat swamp (GI), degree of vegetation growth (VI), level of water table (GWI), and preservation of plant tissues (TPI). By comparing ratios of these indices and correlating them to ternary diagrams developed by different authors, we were able to obtain valuable information as to the conditions that dominated in the original peat swamp. The ratio of VI/GWI provided data on the hydrology and nutrient supply in the peat-forming environment, whereas the ratio of TPI/GI was used to interpret the paleo-environment in relation to the water table. Evaluation of the data showed that the environment that hosted the parent flora was limnic (open water) dominated by grasses and sedges under rheotrophic to mesotrophic nutrient supply conditions.
对希腊托勒梅达盆地Pontokomi(6区)褐煤矿床进行了岩石学研究,分析了其在古环境中占优势的条件。上述矿床位于希腊马其顿广阔的托勒梅达盆地的西北部。它由褐煤层和互层地层交替组成。夹层由粘土泥灰岩构成,偶尔富含沙子。从位于褐煤矿床中部的两个具有代表性的岩心孔(Δ3和Δ5)中采集了37个褐煤样品进行分析。研究表明,腐殖岩类矿物占主导地位,惰质矿物次之。利普顿人只占总人口的一小部分。辉石、亚克力石、欧铝石、硅铝石和硅铝石分别是最丰富的腐殖石组矿物。惰泥质和丝质是主要的惰泥质矿物,孢子质和树脂质是主要的岩质矿物。矿物主要由粘土、碳酸盐和黄铁矿组成。详细的显微分析使我们能够获得与泥炭沼泽的湿度(GI)、植被生长程度(VI)、地下水位(GWI)和植物组织保存(TPI)相关的指标。通过比较这些指数的比率,并将它们与不同作者开发的三元图相关联,我们能够获得有关原始泥炭沼泽占主导地位的条件的宝贵信息。VI/GWI比值提供了泥炭形成环境的水文和养分供应数据,而TPI/GI比值用于解释古环境与地下水位的关系。结果表明,在流变-中营养化条件下,原生植物区系为以禾草和莎草为主的沼泽(开阔水域)环境。
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引用次数: 1
Competition Potential of Wind Power Plants 风力发电厂的竞争潜力
Pub Date : 2005-05-01 DOI: 10.1080/00908310490448550
A. Demirbaş
Abstract In Turkey, wind energy has great potential. According to the Organization for Economic Cooperation and Development (OECD), Turkey theoretically has 160 terrawatt hours a year of wind potential. Substantial potential of wind energy in Turkey is important with respect to the economic, financing, and environmental benefits. Therefore, the evaluation of the substitution potential of wind energy is becoming an important task by generation planning of power systems. Wind energy is among the fastest developing energy sources in Turkey. The Marmara, southeast Anatolian and Aegean regions are highly suitable for wind power generation since wind speeds exceed 3 m/s in most of these areas. Old windmills found in the Marmara and Aegean regions are good indicators of the wind energy potential for these regions. While the average density of wind power is below the 40 W/m2 in 89.3% of Turkey's total domain, it is over 40 W/m2 in 10.7% and it exceeds 100 W/m2 in 0.8%. There are also some regions of Turkey where average density of wind power reaches 294.1 W/m2 level.
在土耳其,风能具有巨大的潜力。根据经济合作与发展组织(OECD)的数据,土耳其理论上每年有160太瓦时的风能潜力。土耳其风能的巨大潜力在经济、融资和环境效益方面非常重要。因此,风能替代潜力的评估正成为电力系统发电规划的一项重要任务。风能是土耳其发展最快的能源之一。马尔马拉、安纳托利亚东南部和爱琴海地区的风速超过3米/秒,非常适合风力发电。在马尔马拉和爱琴海地区发现的旧风车是这些地区风能潜力的良好指标。风电平均密度低于40 W/m2的占89.3%,超过40 W/m2的占10.7%,超过100 W/m2的占0.8%。土耳其也有部分地区风电平均密度达到294.1 W/m2水平。
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引用次数: 5
Estimating Energy and Exergy Production and Consumption Values Using Three Different Genetic Algorithm Approaches. Part 2: Application and Scenarios 利用三种不同的遗传算法估算能源和火用生产和消耗值。第2部分:应用程序和场景
Pub Date : 2005-05-01 DOI: 10.1080/00908310490448631
H. Ceylan, H. Ozturk, A. Hepbasli, Z. Utlu
Abstract The main objective of the present study is to investigate the application of the genetic algorithm (GA) method with various scenarios for the future estimation of the energy and exergy production and consumption values. The methodology developed and presented in detail in Part 1 of this study was applied to Turkey's energy and exergy utilization values. Good correlations were obtained in all cases, indicating the validity of the models proposed that can be used to estimate total energy and exergy production and consumption of Turkey for the period of 2000–2020. It may be concluded that the models reported here will provide the investigators with knowledge about how a country can model its natural resources in terms of energy and exergy utilizations.
摘要本研究的主要目的是探讨遗传算法(GA)方法在各种情景下的应用,用于未来能源和火用生产和消费值的估计。本研究第1部分中详细介绍的方法已应用于土耳其的能源和能源利用价值。在所有情况下都获得了良好的相关性,表明所提出的模型的有效性,可用于估计土耳其2000-2020年期间的能源和能源生产和消费总量。可以得出的结论是,这里报告的模型将向调查人员提供关于一个国家如何在能源和能源利用方面对其自然资源进行建模的知识。
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引用次数: 31
General Outlook of World Main Energy Resources and Numerical Approach for Prediction of SO2 Emission Value 世界主要能源展望及二氧化硫排放数值预测方法
Pub Date : 2005-05-01 DOI: 10.1080/00908310490448640
Nuray Tokgöz
Abstract It is stated in the report of the World Energy Committee that coal will be the first energy source in the year of 2000 because of reserve capacity and widespread existence of the coal geographic region. Solid fuels especially are increasingly dominated inputs for primary electricity generation (54% total input in 1980, and increasing to 66% in 1997) and in a few key industrial sectors, such as steel, cement and chemical. However, since 1990, coal consumption in the European Union was declining due to the restructuring coal industry. It was the only part of the world, except for the “CIS and Central—Eastern Europe” for other reasons (economical and political reforms), in which the trend was observed. These scientific evidences and observations indicated that coal would be the most favored energy source of the next century in spite of decreasing economic petroleum reserves. Besides of this, according to environmental problems, the technologies of coal preparing, washing, and combustion for obtaining appropriate methods and limits progressed fast. Based on these aspects, to provide numerical information on fundamental SO2 value, two different equations are derived and showed in nomogram based on coal technological parameters (according to coal [hard and brown coal] consumption [C, tons] lower heat value [LHV, GJ/tons], moisture content [N, %], sulphur content [S, %] and sulphur content in ash [K s , %]). These equations and nomograms contain data of 17 different Central and Eastern Western countries of Europe from 1997. It is obvious that large coal consumer's countries are also large amount SO2 value producer countries. For instance, CIS (8.85 × 106 ton), Ukraine (4.26 × 106 ton), Poland (3.11 × 106 ton), Germany (2.36 × 106 ton), and Czechoslovakia (2.27 × 106 ton.).
摘要世界能源委员会的报告指出,由于煤炭地理区域的广泛存在和储备能力,到2000年煤炭将成为世界第一能源。特别是固体燃料在初级发电(1980年占总投入的54%,1997年增加到66%)和一些关键工业部门,如钢铁、水泥和化学方面的投入日益占主导地位。然而,自1990年以来,由于煤炭工业的重组,欧盟的煤炭消费量正在下降。除了由于其他原因(经济和政治改革)的“独联体和中欧-东欧”以外,这是世界上唯一观察到这种趋势的地区。这些科学证据和观察表明,尽管经济意义上的石油储量正在减少,煤仍将是下个世纪最受欢迎的能源。除此之外,根据环境问题,为获得合适的方法和限度,煤的选煤、洗选、燃烧等技术发展迅速。在此基础上,根据煤的工艺参数(按煤[硬煤和褐煤]消耗量[C,吨]低热值[LHV, GJ/吨]、含水率[N, %]、硫含量[S, %]和灰分中硫含量[K, S, %]),推导出两种不同的方程,并用图表示出基本的SO2值。这些方程和模态图包含了1997年以来欧洲17个不同的中东欧国家的数据。很明显,煤炭消费大国同时也是大量二氧化硫价值的生产国。例如,独联体(8.85 × 106吨)、乌克兰(4.26 × 106吨)、波兰(3.11 × 106吨)、德国(2.36 × 106吨)、捷克斯洛伐克(2.27 × 106吨)。
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引用次数: 2
Estimating Energy and Exergy Production and Consumption Values Using Three Different Genetic Algorithm Approaches. Part 1: Model Development 利用三种不同的遗传算法估算能源和火用生产和消耗值。第1部分:模型开发
Pub Date : 2005-05-01 DOI: 10.1080/00908310490448604
H. Ceylan, H. Ozturk, A. Hepbasli, Z. Utlu
Abstract The present study, consisting of two parts, proposes new models for estimating energy and exergy production and consumption values using the genetic algorithm approach. Part 1 of this study deals with the model development, while the application and testing with various scenarios will be treated in Part 2. In this regard, the genetic algorithm energy (GAEN) and genetic algorithm exergy (GAEX) estimating models have been proposed. During the energy and exergy estimation, independent variables are the GDP, population, and the ratio of export to import. The three forms of the GAEN and GAEX are developed, of which one is linear, second is exponential and the third is a mix of the exponential and linear form of the equations. Among them, the best fit models in terms of average relative errors and for the testing period are selected for future estimation and proposed both for GAEN and GAEX. It may be concluded that the models proposed here can be used as an alternative solution and estimation techniques to available estimation techniques.
摘要本研究分为两个部分,提出了利用遗传算法估算能源和火用生产和消费值的新模型。本研究的第1部分处理模型开发,而在各种场景下的应用程序和测试将在第2部分进行处理。在这方面,提出了遗传算法能量(GAEN)和遗传算法火用(GAEX)估计模型。在能源和能源估算中,自变量为GDP、人口和进出口比。提出了GAEN和GAEX方程的三种形式,即线性形式、指数形式和指数形式与线性形式的混合形式。其中,选取平均相对误差和测试周期的最佳拟合模型用于未来估计,并提出了GAEN和GAEX的拟合模型。可以得出结论,这里提出的模型可以用作可用估计技术的替代解决方案和估计技术。
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引用次数: 11
Turkey's Non-fossil Energy Sources and Positive Expectations in the Next Decades 土耳其的非化石能源和未来几十年的积极期望
Pub Date : 2005-05-01 DOI: 10.1080/00908310490448569
A. Demirbaş, R. Bakış
Abstract According to some projections, Turkey's primary energy demand is expected to increase four times its 1998 value in the next 20 years. Turkish gas demand is expected to increase more than five folds in 2010 and eight times in 2020. Supplies of fossil and nuclear sources are generally acknowledged to be finite; non-fossil energy sources, such as nuclear, hydropower, biomass, solar and wind, are generally considered renewable and therefore sustainable over the relative long term. Turkey plans to increase hydropower production in the near future. The sharp growth of the energy sector has been accompanied by institutional reforms. One of the most important developments has been liberalization of all energy sectors, including electricity production and distribution, to private capital both national and foreign. Turkey possesses a relatively high abundance of hydropower, geothermal energy, biomass, moderate wind speeds and solar radiation, and nuclear energy resources. Renewable environmentally friendly energy must be encouraged, promoted, implemented and demonstrated for use in Turkey.
据预测,未来20年土耳其的一次能源需求预计将比1998年增长4倍。预计2010年土耳其天然气需求将增长5倍以上,2020年将增长8倍。人们普遍认为矿物和核资源的供应是有限的;非化石能源,如核能、水电、生物质能、太阳能和风能,通常被认为是可再生的,因此在相对长期内是可持续的。土耳其计划在不久的将来增加水力发电。能源部门的急剧增长伴随着体制改革。最重要的发展之一是向国内和外国私人资本开放所有能源部门,包括电力生产和分配。土耳其拥有相对丰富的水电、地热能、生物质能、中等风速和太阳辐射以及核能资源。必须鼓励、促进、实施和示范在土耳其使用可再生的环境友好型能源。
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引用次数: 5
Recovering Renewable Energy from Palm Oil Waste and Biogas 从棕榈油废料和沼气中回收可再生能源
Pub Date : 2005-05-01 DOI: 10.1080/00908310490448406
Choy Yee Keong
Abstract Malaysia is endowed with abundant supplies of non-renewable energy resources, especially oil and gas. However, its current oil and gas reserves are expected to be depleted within 17 and 37 years, respectively. With the future prospect of energy prices likely to soar when the level of use of these non-renewable fossil fuel resources exceeds their threshold capacity, there is an urgent need for Malaysia to optimize the use of its huge quantities of palm oil biomass wastes as a renewable energy source. Against this background, this article aims to empirically and quantitatively analyze the potential of recovering renewable energy from palm oil wastes, which contributes substantially to harnessing a sustainable resource management system in Malaysia.
马来西亚拥有丰富的不可再生能源资源,尤其是石油和天然气。然而,其目前的石油和天然气储量预计将分别在17年和37年内枯竭。当这些不可再生的化石燃料资源的使用水平超过其阈值容量时,未来的能源价格可能会飙升,马来西亚迫切需要优化其大量棕榈油生物质废物作为可再生能源的使用。在此背景下,本文旨在实证和定量分析从棕榈油废物中回收可再生能源的潜力,这有助于在马来西亚利用可持续的资源管理系统。
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引用次数: 13
Options and Trends of Thorium Fuel Utilization 钍燃料利用的选择和趋势
Pub Date : 2005-05-01 DOI: 10.1080/00908310490448596
A. Demirbaş
Abstract Turkey has rich thorium reserves amounting to about 380,000 tons as observed until today. Thorium reactors are under development by some countries. They are less dangerous than the classical uran reactors. In a comparison of fuels, spent thorium fuel is considerably less radiotoxic than spent uranium fuel. From the stand point of environmental protection, the thorium reactors will have a future. Turkey must develop cooperation with countries that develop thorium reactor technology. The protection of environment and conservation of energy by using new technologies and new techniques are also important aspects. Nuclear power plants must be built in Turkey.
土耳其拥有丰富的钍储量,据今天观察,储量约为38万吨。一些国家正在开发钍反应堆。它们比传统的城市反应堆危险性小。在燃料的比较中,乏钍燃料的放射性毒性比乏铀燃料小得多。从环境保护的角度来看,钍反应堆是有前途的。土耳其必须与开发钍反应堆技术的国家发展合作。利用新技术和新工艺保护环境和节约能源也是重要方面。核电站必须建在土耳其。
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引用次数: 11
期刊
Energy Sources
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