In the coming years, humans will have choices to make about where we get the fuel that powers our lights for us to see at night, our stoves for our hot meals, our water heaters for our warm baths, and even our cars. These choices will affect the air we breathe: burning fuel often causes pollution, like the smog found in cities, and almost always leads to more greenhouse gases in the air. Smog a...

Future use of coal for power generation in the US depends on technologies being made available to capture and store CO2 emissions from power plants. A key candidate CO2 capture technology is oxy-firing of coal. Application of oxy-firing to existing power plants presents unquantified challenges as the characteristics of oxy-firing compared to airfiring have not been fully determined. This presen...

Coal-…red power plants may enjoy a signi…cant advantage relative to gas plants in terms of cheaper fuel cost. Still, this advantage may erode or even turn into disadvantage depending on CO2 emission allowance price. This price will presumably rise in both the Kyoto Protocol commitment period (2008-2012) and the …rst post-Kyoto years. Thus, in a carbonconstrained environment, coal plants face …n...

Investments in three coal-fired power generation technologies are valued using the "real options" valuation methodology in an uncertain carbon dioxide (CO2) price environment. The technologies evaluated are pulverized coal (PC), integrated coal gasification combined cycle (baseline IGCC), and IGCC with pre-investments that make future retrofit for CO2 capture less expensive (pre-investment IGCC...

20 The aim of this paper is to assess the Zn isotopic variabilty in feed materials and in 21 combustion by-products collected from three different coal-fired power plants and to 22 develop a generalized model that accounts for the Zn isotopic fractionation occuring 23 during coal combustion processes. Partitioning of Zn between combustion residues and 24 the isotopic composition of feed materia...

Reductions in the cost of technologies as a result of learning-by-doing, R&D investments and other factors have been observed over many decades. This study uses historical experience curves as the basis for estimating future cost trends in CO2 capture technologies applied to four types of electric power systems: pulverized coal (PC) and natural gas combined cycle (NGCC) plants with postcombusti...

China is the biggest coal product and consumption country around the world. Lots of coal consumption resulted huge carbon dioxide (CO2) emission, especially for coal-fired power plant in China. Oxy-fuel combustion is currently considered to be one of the major technologies for CO2 capture in power plants. The ash formation mechanism and mineral transformation in high CO2 atmosphere is different...

The efficiency of electricity generation in hard coal fired power plants varies considerably from country to country and over time. These differences occur both between developing and developed countries and between industrialised nations. The econometric analysis presented in this paper tests for the reasons of these discrepancies. In this examination abundance of hard coal and the price of ha...

Today coal is among the most important energy sources. In order to meet the world's energy demands, low-calorie lignite with a high ash content is generally used in the large capacity coal-fired thermal power plants. As a result of coal firing, wastes such as fly ash, slag, and flue gas are also produced. Subsequently, toxic trace elements within coal are transferred to wastes such as slag, fl...

energy policy making in the third millennium is summarized in three areas. the first area: moving toward the use of renewable, clean and environment compatible energy, the second area: restructuring in the energy sector, to make it competitive, & finally, the third area is: increasing efficiency in energy consumption. power industry as a growing sub-section of energy sector, especially in recen...