exergy flow

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• Exergy efficiency — (also known as the second law efficiency or rational efficiency) computes the efficiency of a process taking the second law of thermodynamics into account.MotivationFrom the second law of thermodynamics it can be demonstrated that no system can… …   Wikipedia

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• Material flow accounting — (MFA) is the study of material flows on a national or regional scale. It is therefore sometimes also referred to as regional, national or economy wide material flow analysis. Contents 1 Definition 2 Terms and Indicators 3 References 4 …   Wikipedia

• World energy resources and consumption — In order to directly compare world energy resources and consumption of energy, this article uses SI units and prefixes and measures energy rate (or power) in watts (W) and amounts of energy in joules (J). One watt is one joule per second. In 2005 …   Wikipedia

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• Sankey diagram — Sankey diagrams are a specific type of flow diagram, in which the width of the arrows is shown proportionally to the flow quantity. They are typically used to visualize energy or material transfers between processes. ApplicationSankey diagrams… …   Wikipedia

• Emergy — The term Emergy was originally coined by David M. Scienceman in collaboration with the late Howard T. Odum. H.T.Odum used emergy to mean both sequestered energy and emergent property of energy use [ H.T.Odum, 1988,… …   Wikipedia

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• Transformity — The concept of transformity was first introduced by David M. Scienceman in collaboration with the late Howard T. Odum. In 1987 Scienceman proposed that the phrases, energy quality , energy quality factor , and energy transformation ratio , all… …   Wikipedia