...Mehdi Yousefi; M. A. Ehyaei; Marc A. Rosen The energy, exergy, and economic aspects are analyzed of a cycle consisting of a polymer fuel cell, a burner, a reformer, and a heat exchanger. Water is used for cooling the fuel cell, and the heated water is used for domestic consumption. The exergy...

... is considered. Exergy analysis of the system has been carried out. Social cost of air pollution is the charge based on negative effects of air pollution on the health of society and environment. The economic aspect of these effects is called externalized social cost of air pollution. The present...

... scale are also confirmed on a system level, except for the production of pure CO 2 . Net system efficiencies of around 78% were found for the developed system. An exergy analysis of the system shows where the losses in the system occur. If the cathode of the DCFC must be operated as a standard MCFC...

... balance with large scale material flow accounting, embodied energy analysis, exergy efficiency, and emergy synthesis, within a LCA perspective. Results show that the best performance from the point of view of energy and exergy efficiency is shown by the MCFC-hybrid system. The latter is also characterized...

... stacks allow this reaction to occur at elevated pressures. An exergy analysis of a gas turbine cycle integrated with SOFCs with internal reforming is conducted. As the efficiency of a gas turbine cycle is mainly defined by the maximum temperature at the turbine inlet, this temperature is fixed at 1573 K...

... proton exchange membrane fuel cells hydrogen economy catalysts irreversible thermodynamics organic compounds exergy carbon compounds steam reforming ethanol hydrogen production exergetic analysis energetic analysis The consumption of energetic resources have increased over...

...N. Woudstra; T. P. van der Stelt; K. Hemmes Energy conversion today is subject to high thermodynamic losses. About 50% to 90% of the exergy of primary fuels is lost during conversion into power or heat. The fast increasing world energy demand makes a further increase of conversion efficiencies...

...Petar Varbanov; Jiří Klemeš; Ramesh K. Shah; Harmanjeet Shihn A new view is presented on the concept of the combined cycle for power generation. Traditionally, the term “combined cycle” is associated with using a gas turbine in combination with steam turbines to better utilize the exergy potential...

... of methane fuel utilization efficiency and each component of the plant has been evaluated on the basis of second law efficiency. The analyses show that in all cases the exergy losses (irreversibilities) in the combustion chamber are the most significant losses in the cycle. Furthermore, for the same power...