Exergy analysis is based on combined first and second laws of thermodynamics and is a useful tool to analyze the energy systems in a better and more realistic way than an energy analysis, based on the first law of thermodynamics. Combination of exergy from thermodynamics with conventional concepts from engineering economy which is referred to as thermo-economy (exergo-economy) is a valuable too...

Since producing our first steam turbine in 1959, Fuji Electric has manufactured more than 464 steam turbines having a total combined output capacity that exceeds 23,619 MW, and has delivered these turbines to various countries throughout the world. In the industrial sector, Fuji Electric shipped Japan's first supercritical, pure transformation plant in 1973, achieving higher operating efficienc...

Poor control of steam generator water level is the main cause of unexpected shutdowns in nuclear power plants. Such shutdowns are caused by violation of safety limits on the water level and are common at low operating power where the plant exhibits strong nonminimum phase characteristics. In addition, the steam generator is a highly complex, nonlinear and time-varying system and its parameters ...

This presentation is a pure steam-plasma torch generated by microwave energy and uses it for coal gasification in a lightweight operating system. The high temperature of the steam torch when used for fast gasification reactions of low-grade coal ensures a compact reaction system for an electrical power plant.

Most of the advanced integrated energy systems need a heat recovery steam cycle (HRSC), either fired or unfired, that recovers the waste heat from gas turbines and process units in order to generate electric power and supply mechanical power to compressors, heat to endothermic processes, and steam to external users. The key feature of such HRSCs is the integration between the heat recovery stea...

The purpose of this study is to comparatively evaluate four types of advanced conceptual power plants based on coal. With efficiency, costof-electricity, and emissions as main criteria, the evaluation was made under consistent design conditions and economic assumptions. The plants considered are a supercritical steam power plant (SC 580◦C), an indirectly coal-fired power system (HIPPS), an adva...

The direct steam generation (DSG) in parabolic trough collectors is an attractive option regarding the economic improvement of parabolic trough technology for solar thermal electricity generation in the multi Megawatt range. The European DISS project has proven the feasibility of the direct steam generation under real solar conditions in more than 4000 operation hours. Within the European R&D p...