Tag Archives: Peak oil

Liquid nitrogen vehicles

A liquid nitrogen vehicle is powered by liquid nitrogen, which is stored in a tank. Traditional nitrogen engine designs work by heating the liquid nitrogen in a heat exchanger, extracting heat from the ambient air and using the resulting pressurized gas to operate a piston or rotary motor. Vehicles propelled…

Liquid nitrogen vehicles

Competition between Food and fuel

Food versus fuel is the dilemma regarding the risk of diverting farmland or crops for biofuels production to the detriment of the food supply. The biofuel and food price debate involves wide-ranging views, and is a long-standing, controversial one in the literature. There is disagreement about the significance of the…

Competition between Food and fuel

Energy returned on energy invested

In physics, energy economics, and ecological energetics, energy returned on energy invested (EROEI or ERoEI); or energy return on investment (EROI), is the ratio of the amount of usable energy (the exergy) delivered from a particular energy resource to the amount of exergy used to obtain that energy resource. It…

Energy returned on energy invested

Peak oil prediction

Peak oil is the temporal maximum of the world crude oil production rate . The concept of a maximum oil price is based on the observation that the extraction of raw materials from certain deposits will reach a historic maximum long before the final depletion of reserves due to several…

Peak oil prediction

Peak oil

Peak oil is the theorized point in time when the maximum rate of extraction of petroleum is reached, after which it is expected to enter terminal decline. Peak oil theory is based on the observed rise, peak, fall, and depletion of aggregate production rate in oil fields over time. It…

Peak oil

Overconsumption

Overconsumption is a situation where resource use has outpaced the sustainable capacity of the ecosystem. A prolonged pattern of overconsumption leads to environmental degradation and the eventual loss of resource bases. Generally, the discussion of overconsumption parallels that of human overpopulation; that is the more people, the more consumption of…

Overconsumption

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