The paper discusses the energy consumption and energy saving potential for a major energy-intensive product in the chemical industry-ammonia, based on technologies currently in use and possible process improvements. The paper consists of four parts. In the first part, mainly references to...

As an example of a new communication technology that has reached a high penetration rate within only a few years, this article looks at the energy demand of mobile phone services in Germany. Mobile phone services combine two trends of modern communication technologies — mobility and...

A quantitative estimation of the energy potential of ocean surface waves, ocean currents and tides and a review of the techniques for utilizing these renewable energy sources, their present state of development and their economic and environmental aspects are presented. The potential of wave...