Simulation of the ribbon-shaped electron beam of the diode electron-optical system of microwave devices
Complex numerical simulation of the ribbon-shaped electron beam, which is formed by the diode electron gun with magnetic field focusing was conducted. Analysis of the beam formation dynamics in longitudinal and cross-section as well as the results of calculation of the separate electron trajectories agree with experimental data, obtained previously by using of the method of electron beam diagnostics by means of transient radiation.
The problem of ribbon electron beam modeling
The three-dimensional model and algorithm of numeral calculation of electric field intensity is offered in a diode gun, and calculation of current density in the cross-sections of ribbon electron beam is carried out. The emission nonuniform, power and angular dispersion, electrons settling on electrodes are taken into account during calculations.
Thermodynamic Evaluation of Solar Integration into a Natural Gas Combined Cycle Power Plant
The term integrated solar combined-cycle (ISCC) has been used to define the combination of solar thermal energy into a natural gas combined-cycle (NGCC) power plant. Based on a detailed thermodynamic cycle model for a reference ISCC plant, the impact of solar addition is thoroughly evaluated for a wide range of input parameters such as solar thermal input and ambient temperature. It is shown that solar hybridization into an NGCC plant may give rise to a substantial benefit from a thermodynamic point of view. The work here also indicates that a significant solar contribution may be achieved in an ISCC plant, thus implying substantial fuel savings and environmental benefits.