This paper briefs the developmental course, manufacturing and applications, as well as future prospect of excitation systems of large size turbogenerators in China, emphatically expounds the advantages of seif-excitat...This paper briefs the developmental course, manufacturing and applications, as well as future prospect of excitation systems of large size turbogenerators in China, emphatically expounds the advantages of seif-excitation systems with potential source reetifiers and matters needing to be noted during dissemination and application of them.展开更多
To reduce greenhouse gas emissions from fossil fuel fired power plants,a range of new combustion technologies are being developed or refined,including oxy-fuel combustion,co-firing biomass with coal and fluidized bed ...To reduce greenhouse gas emissions from fossil fuel fired power plants,a range of new combustion technologies are being developed or refined,including oxy-fuel combustion,co-firing biomass with coal and fluidized bed combustion.Flame characteristics under such combustion conditions are expected to be different from those in normal air fired combustion processes.Quantified flame characteristics such as temperature distribution,oscillation frequency,and ignition volume play an important part in the optimized design and operation of the environmentally friendly power generation systems.However,it is challenging to obtain such flame characteristics particularly through a three-dimensional and non-intrusive means.Various tomography methods have been proposed to visualize and characterize flames,including passive optical tomography,laser based tomography,and electrical tomography.This paper identifies the challenges in flame tomography and reviews existing techniques for the quantitative characterization of flames.Future trends in flame tomography for industrial applications are discussed.展开更多
Electricity generation generally is made in thermal, hydro, geothermal power plants and windfarms/windparks. Because of some advantages such as renewability, low-cost, clean, safe and naturality geothermal and wind en...Electricity generation generally is made in thermal, hydro, geothermal power plants and windfarms/windparks. Because of some advantages such as renewability, low-cost, clean, safe and naturality geothermal and wind energy will have been electricity generation source in the near future. Turkey has hot water springs suitable for electricity generation between 130-242 ~C with natural vapor and hydrothermal alterations in connection with grabens limited to active faults and diffuse young volcanism in Western Anatolia Region. Other renewable energy and electricity generation resource is wind energy. In Turkey electricity generation is made by windfarms/windparks. These parks/farms are generated 1,414.55 MW electricity. The year 2010 electricity general total installed capacity in Turkey is about 49,524.1 MW. According to the total installed capacity, thermal power plants have 65.18%, hydro power plants have 31.97%, geothermal power plants and wind farms have 2.85%. Electricity generation generally was obtained from 15 thermal power plants. In this study high temperature geothermal fields and windparks/windfarms in Turkey which are suitable for electricity generation potential were investigated.展开更多
Based on the changes in the European energy market and EU goals for CO2 reduction, the fossil fired power plants, especially the high effective combined cycle power plants, are faced with new challenges. Flexible load...Based on the changes in the European energy market and EU goals for CO2 reduction, the fossil fired power plants, especially the high effective combined cycle power plants, are faced with new challenges. Flexible load requirements associated with frequent shutdowns especially in plants with peak load area are the results. In addition, large reserve capacities have to be retained for short-terms needs which can be quickly start operation. For this reason, preservation procedures play an increasingly important role. They should provide a good protective effect with the most simple handling and flexible management system. The preservation using FFA （film forming amines）, for example, octadecylamine become more and more attraction. With the lecture, a first insight into the preservation process using octadecylamine will be given to the operators of boiler and turbine plants. Especially in the view of the further increase in supply of renewable energy and related flexibility requirements in the existing power plants, an efficient and sustainable preservation technology will be presented.展开更多
文摘This paper briefs the developmental course, manufacturing and applications, as well as future prospect of excitation systems of large size turbogenerators in China, emphatically expounds the advantages of seif-excitation systems with potential source reetifiers and matters needing to be noted during dissemination and application of them.
基金Supported by the National Natural Science Foundation of China(50736002,61072005)the 1000-Talent-Plan,Changjiang Scholars and Innovative Team Development Plan(IRT0952)partly by Research Councils United Kingdom's Energy Programme(EP/G063214/1)
文摘To reduce greenhouse gas emissions from fossil fuel fired power plants,a range of new combustion technologies are being developed or refined,including oxy-fuel combustion,co-firing biomass with coal and fluidized bed combustion.Flame characteristics under such combustion conditions are expected to be different from those in normal air fired combustion processes.Quantified flame characteristics such as temperature distribution,oscillation frequency,and ignition volume play an important part in the optimized design and operation of the environmentally friendly power generation systems.However,it is challenging to obtain such flame characteristics particularly through a three-dimensional and non-intrusive means.Various tomography methods have been proposed to visualize and characterize flames,including passive optical tomography,laser based tomography,and electrical tomography.This paper identifies the challenges in flame tomography and reviews existing techniques for the quantitative characterization of flames.Future trends in flame tomography for industrial applications are discussed.
文摘Electricity generation generally is made in thermal, hydro, geothermal power plants and windfarms/windparks. Because of some advantages such as renewability, low-cost, clean, safe and naturality geothermal and wind energy will have been electricity generation source in the near future. Turkey has hot water springs suitable for electricity generation between 130-242 ~C with natural vapor and hydrothermal alterations in connection with grabens limited to active faults and diffuse young volcanism in Western Anatolia Region. Other renewable energy and electricity generation resource is wind energy. In Turkey electricity generation is made by windfarms/windparks. These parks/farms are generated 1,414.55 MW electricity. The year 2010 electricity general total installed capacity in Turkey is about 49,524.1 MW. According to the total installed capacity, thermal power plants have 65.18%, hydro power plants have 31.97%, geothermal power plants and wind farms have 2.85%. Electricity generation generally was obtained from 15 thermal power plants. In this study high temperature geothermal fields and windparks/windfarms in Turkey which are suitable for electricity generation potential were investigated.
文摘Based on the changes in the European energy market and EU goals for CO2 reduction, the fossil fired power plants, especially the high effective combined cycle power plants, are faced with new challenges. Flexible load requirements associated with frequent shutdowns especially in plants with peak load area are the results. In addition, large reserve capacities have to be retained for short-terms needs which can be quickly start operation. For this reason, preservation procedures play an increasingly important role. They should provide a good protective effect with the most simple handling and flexible management system. The preservation using FFA （film forming amines）, for example, octadecylamine become more and more attraction. With the lecture, a first insight into the preservation process using octadecylamine will be given to the operators of boiler and turbine plants. Especially in the view of the further increase in supply of renewable energy and related flexibility requirements in the existing power plants, an efficient and sustainable preservation technology will be presented.
