Coal Analysis Articles
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Influence and control of coal facies on physical properties of the coal reservoirs in Western Guizhou and Eastern Yunnan, China
Western Guizhou and Eastern Yunnan have abundant coal resources, and they are considered as the most prospective areas for coalbed methane (CBM) development in Southern China. To explore the potential of CBM production in these areas, this paper identifies the plane distribution of coal facies, and analyses its control on the physical properties of coal reservoirs. Four types of coal facies ...
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Exergoeconomic analysis of a Kalina cycle coupled coal–fired steam power plant
This paper presents exergoeconomic analysis of a Kalina cycle coupled coal–fired steam power plant using specific exergy costing (SPECO) methodology. Cost–balance and auxiliary equations are developed and solved. The results indicate that in the topping cycle, the boiler and the turbine contribute maximum to the formation of product cost. High value of exergoeconomic factor for the boiler ...
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Chemical exergy analysis of Afşin–Elbistan lignite and its effects on the thermal power plant exergy efficiency
In this study, the chemical exergy of low profile industrial lignite has been studied through a case study at the 1440 MW Afşin–Elbistan B lignite–fired power plant. Chemical exergy methods in the literature were applied to design lignite to investigate results on the exergy efficiency of the power plant for different power rates. The ASTM standard and well known methods have been compared by ...
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Power Sector Opportunities for Reducing Carbon Dioxide Emissions: Michigan
According to new WRI analysis, in the near- to mid-term, Michigan can meet and possibly exceed future emissions standards for existing power plants. The state has renewable energy (RPS) and energy efficiency standards in place that are already set to achieve significant reductions in CO2 emissions from the power sector. WRI analysis finds that Michigan can reduce its CO2 emissions 33 percent ...
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Power sector opportunities for reducing carbon dioxide emissions: North Carolina
According to new WRI analysis, in the near-term, North Carolina can meet and possibly exceed forthcoming emissions standards for existing power plants.[1] The state has a renewable energy and energy efficiency standard (REPS) in place, which has already achieved significant reductions in CO2 emissions from the power sector. WRI analysis finds that North Carolina can reduce its CO2 emissions 29 ...
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Power sector opportunities for reducing carbon dioxide emissions: Ohio
According to new WRI analysis, in the near-term, Ohio can meet and possibly exceed forthcoming emissions standards for existing power plants. Ohio has a renewable portfolio standard (RPS) and an energy efficiency resource standard (EERS) in place, which if successful will achieve significant reductions in CO2 emissions from the power sector. WRI analysis finds that Ohio can reduce its CO2 ...
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Application of artificial neural network to exergy performance analysis of coal fired thermal power plant
This study presents an artificial neural network (ANN) model to predict the exergy efficiency in a thermal power plant. An ANN model based on back–propagation learning algorithm for prediction of exergy efficiency was developed. In the ANN model, the actual data set includes 27 values, of which 18 values were used for training the network and 9 values, were selected randomly to test the ...
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New coal report underscores the urgent need for global clean energy development
The latest International Energy Agency’s (IEA) Medium-Term Coal Market Report 2012 re-confirms the dangerous path the world is on–a path of increasing dependence on coal, which carries serious environmental risks for people and the planet. According to the report, the world will burn 1.2 billion metric tons more coal per year by 2017 compared to today, surpassing oil as the ...
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New global assessment reveals nearly 1,200 proposed coal-fired power plants
Coal-fired power plants are a major source of greenhouse gas emissions—one that could be increasing significantly globally, according to new analysis from the World Resources Institute. Several months ago, WRI began compiling and analyzing information about proposed new coal-fired plants in order to assess potential future risks to the global climate. We released our findings today in the ...
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Performance analysis of a single cylinder DI diesel engine using different biodiesel
Biodiesel produced from cottonseed oil is quite a promising alternative fuel for diesel engines. Use of vegetable oils in diesel engines leads to slightly inferior performance and higher smoke emissions due to their high viscosity and carbon residue. But the performance of vegetable oils can be improved by modifying them through the transesterification process. The research work discusses the ...
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Heavy media coal hydro-transport in Malinau, Indonesia: a process study
In Indonesia, coal transportation has traditionally been handled by trucks and by other mechanical means. With the expansion plan of coal production and increasing truck costs, Kayan Putra Utama Coal believes that alternative modes of transportation must be considered. For long distance transport of export size coal, one of the most viable options is to use coal slurry pipeline. This paper ...
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Thermo-economic efficiency of low capacity coal-based power plants
The method of estimation of thermo-economic factors, allowing the justification of the construction of low capacity coal-based power plants has been developed in the present paper. The C-curve method applied for thermo-economic analysis is used here for determination of the optimal ratio between specific exergetic and cost-performance factors. The results of the analysis show that for coal-based ...
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Heavy media coal hydro-transport in Malinau, Indonesia: a process study
In Indonesia, coal transportation has traditionally been handled by trucks and by other mechanical means. With the expansion plan of coal production and increasing truck costs, Kayan Putra Utama Coal believes that alternative modes of transportation must be considered. For long distance transport of export size coal, one of the most viable options is to use coal slurry pipeline. This paper ...
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Hours of work risk factors for coal mining
This paper considers the principal variations in accident and incident risk in relation to roster design within the Australian coal mining industry. Analysing industry-wide accident and incident statistics for both a wide range of coal mine operating conditions and different roster patterns allowed for the impact of hours on shift, number of successive shifts and the type of shift to be ...
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Improving steam power plant efficiency through exergy analysis: effects of altering excess combustion air and stack-gas temperature
Modifications are examined to increase coal-fired steam power plant efficiency by reducing irreversibilities in the steam generator, including decreasing the fraction of excess combustion air, and/or the stack-gas temperature. Overall-plant energy and exergy efficiencies both increase by 1.4% when the fraction of excess combustion air decreases from 0.4 to 0.15, and by 3.5% when the stack-gas ...
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Efficiency analysis of coal-based thermal power generation in India during post-reform era
Coal-based thermal power stations are the leaders in electricity generation in India. This study employs the stochastic frontier production function methodology for panel data to measure the technical efficiency (TE) of coal-based thermal power plants in India during 1994-1995 to 2001-2002. Efficiency varies widely across plants and regions, while the TE is time-invariant. The average TE is ...
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