The optimization of the steam parameters heat recovery generators (HRSG) Combined Cycle Gas Turbines (CCGT) has become one important means to reduce power generation cost combined cycle units. Based on structural theory thermoeconomics, a thermoeconomic model for triple pressure reheat HRSG is established. Taking minimization system as objective, an algorithm based three factors and six levels ...

Low-grade heat can be successfully recovered from waste energy sources for power production by an organic Rankine cycle (ORC). In this work, reheat ORC has been studied with three different wet fluids. The performance of R1270, R152a and Cyclopropane modelled in operated a source 413.15K. model contains economizer, evaporator, superheater, reheater, two turbine, pump condensers. With variable t...

For the continuous operation in another 20 or more years from aged thermal power generating units that have already been operated for 30 years, Fuji Electric has replaced a two-cylinder reheat type turbine with sophisticated single-cylinder reheat type turbine, were reused the existing foundation and nearly all the auxiliary machinery as counter-measures of life prolongation of the plant. By re...

Nowadays, energy plays an important role in the economic and community development of country. Consequently, performance analysis of energy systems is one of the effective methods being used to prevent waste of energy resources. Among the different power generation technologies, steam power plants make a significant contribution to power generation in Iran, with a share of 47 % of electricity g...

Nowadays, energy plays an important role in the economic and community development of country. Consequently, performance analysis of energy systems is one of the effective methods being used to prevent waste of energy resources. Among the different power generation technologies, steam power plants make a significant contribution to power generation in Iran, with a share of 47 % of electrici...

Chandra images show symmetric, 8 kpc long, arm-like features in the X-ray halo surrounding NGC 4636. The leading edges of these features are sharp and are accompanied by temperature increases of ∼ 30%. These properties, along with their scale and symmetry, suggest that the arm-like structures are produced by nuclear outburst driven shocks. We interpret these observations as part of a cycle in w...

This communication presents thermodynamic methodology for the performance evaluation of combustion gas turbine cogeneration system with reheat. The energetic and exergetic efficiencies have been defined. The effects of process steam pressure and pinch point temperature used in the design of heat recovery steam generator, and reheat on energetic and exergetic efficiencies have been investigated....

It aimed at the secondary reheat ultra-supercritical unit to study direction of energy saving, through comparing design reasonable optimization and improve cycle thermal efficiency, reduce coal consumption, achieve goal saving reducing consumption. From traditional heat extraction scheme, by setting cooler, increase series a new solution method, such as scheme different performance, investment,...