finalize the policy decisions on important issues such as energy sustainability, collaboration between policy makers, academia … develop energy systems for mobility. The analysis proceeds from the context of Sustainability Science, a new science, which … propose a scheme of definition of Sustainability Energy, defining five pillars of reference, and we redefine the energy …

Biomass energy and especially biofuels produced by biomass gasification are clean and renewable options for power … cooling. In the present paper, a biomass-integrated fogging steam injected gas turbine cycle is analyzed with energy and …) increasing the compressor pressure ratio raises the energy and exergy efficiencies, especially at lower pressure ratios; (4 …

continued availability of cheap, high energy return on investment (EROI) oil, however, is increasingly in doubt. If cheap oil is … biophysical constraints if they are to adapt to the coming energy crisis. …

This paper is a synthesis of a series of twenty papers on the topic of EROI, or energy return on investment. EROI is … simply the energy gained from an energy-obtaining effort divided by the energy used to get that energy. For example, one … and often highly technical papers. About half of the papers are reports on empirical analyses of various energy sources …

Energy Return on Investment (EROI) refers to how much energy is returned from one unit of energy invested in an energy …

) energy quality corrections, (3) energy-economic conversions, and (4) alternative EROI statistics. Lastly, we present step …

Declining energy return on investment (EROI) of a society’s available energy sources can lead to both crisis and … interpretation. There are many reasons why frugal living and an energy diet could be beneficial. A measure of wellbeing or welfare … gained per unit of energy expended (WROEI) is proposed. A threshold is hypothesized for the relation between energy …

fundamental support systems (energy, food, and water supply). The process introduced some creative tensions between imaginative …