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In this paper, an exergy analysis of nickel processing is performed through the application of two methodologies: TEC (thermo-ecological cost) and ERC (exergy replacement cost). The merging of both methodologies allows to have a complete assessment of non-fuel mineral processing. TEC evaluates the cumulative consumption of non-renewable exergy required to produce a unit of useful product from the...
In the current context of environmental and global challenges, eco-innovation has become one of the European Union's priorities. A proper measurement system is a need for the promotion, long-term decision making and progress assessment of eco-innovative activities. Public and private sectors have to refocus their activities in order to pursue maximum profits, not only economic but social and environmental...
This paper makes an assessment of the exergy loss of the main minerals produced in the world throughout the 21st century, namely coal, oil, natural gas, iron, aluminium and copper. The reason for using the exergy analysis as an assessment tool is because it takes into account the main physical features that make a natural resource valuable: concentration, composition and quantity. Furthermore, using...
This paper proposes a method of thermoeconomic diagnosis based on the concepts of the fuel impact formula and the analytical reconciliation method. Such a method is able to detect, isolate and quantify individually the causes in terms of the additional fuel consumption, when internal malfunctions or control deviations occur. Commonly, any diagnosis method requires the definition of a Test State Condition...
Physical hydronomics (PH) is the specific application of thermodynamics that physically characterizes the governance of water bodies, i.e., the Water Framework Directive (WFD) for European Union citizens. In this paper, calculation procedures for the exergy analysis of river basins are developed within the WFD guidelines and a case study is developed. Therefore, it serves as an example for the feasible...
Increasing concerns about the environmental impact and unreasonable consumption of natural resources for energy production and conversion processes have led to analyze thoroughly the current state of energy systems development. Hence, what is required is not only producing with the maximum cost effectiveness, but also minimizing the emission of pollutants and waste disposals, too. Unavoidably, in...
This paper explains some capabilities and drawbacks of the emerging field of exergy accounting. Among other applications, exergy accounting is successfully used for diagnosing energy systems and for the accounting of Earth's exergy resources. Both applications rely on the concept of exergetic cost. This concept tries to measure the amount of exergy resources to produce any good. The process of cost...
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