The flowfield of a magnetoplasmadynamic thruster was simulated numerically and the results compared to experimental measurements, in order to validate the code and obtain insight into underlying physical processes. The thruster chosen was the full-scale benchmark thruster, because it has been the subject of many experimental studies. The parallelized axi-symmetric code featured detailed physica...

Jordan is a developing country with an increasing electric demand and very limited fuel resources. As a result, the majority of Jordan's electric generation is fueled by imported fossil fuels, which greatly stresses the country's economy. While Jordan is incredibly resource poor when it comes to fossil fuels, it does have a vast untapped solar energy potential. Jordan's promising renewable ener...

This is Part II of two papers evaluating the feasibility of providing all energy for all purposes (electric power, transportation, and heating/cooling), everywhere in the world, from wind, water, and the sun (WWS). In Part I, we described the prominent renewable energy plans that have been proposed and discussed the characteristics of WWS energy systems, the global demand for and availability o...

As the Electric Distribution industry enters the Smart Grid era, it is deploying a variety of new technologies (including distributed energy resources) and communications infrastructure to enhance the performance of the distribution grid, improve customer satisfaction and reduce the carbon footprint. On the one hand, these new Smart Grid investments look as though they will pay off as customers...

the continuous spread of distributed energy resources (ders) such as combined heating and power (chp), diesel generators, boilers and renewable energy sources provide an effective solution to energy related problems to serve the power and heat demands with minimum cost. moreover, the ders may play a significant role for supplying power and heat in rural areas, where grid electricity is not avai...

In this paper, they study energy efficient resource allocation scheme for Orthogonal Frequency Division Multiple Access (OFDMA) systems with heterogeneous users. The trade-off between spectral and energy efficiencies is analyzed under the constraint of maintaining the fairness among users. They formulate the energy-efficient optimization problem as an integer fractional programming and present ...

This paper describes a first version of a simulation model of the electrical energy system for the German federal state Bavaria in order to analyse its energy balance during the nuclear phaseout and the increase of renewable energy sources as well as energy storage capacities. According to current plans, in ten years 50 percent of the Bavarian electric power consumption should be covered by ren...

Thermal to electric energy conversion with thermophotovoltaics relies on radiation emitted by a hot body, which limits the power per unit area to that of a blackbody. Microgap thermophotovoltaics take advantage of evanescent waves to obtain higher throughput, with the power per unit area limited by the internal blackbody, which is n2 higher. We propose that even higher power per unit area can b...

In this study, we estimate variable fuel costs and total energy consumption for grid-powered electric cars using eight-year forecasts of cost per kilowatt hour for US national data coupled with real data distributions derived by daily electronic tracking the performance of a single Nissan Leaf located in Texas. These fuel costs are estimated based on a stochastic driving distance, then costs ar...