Wojciech Stanek's research while affiliated with Silesian University of Technology and other places
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Publications (29)
ECOS 2019 was the 32th edition of International Conference on Efficiency, Cost, Optimisation, Simulation and Environmental Impact of Energy Systems and was organizing by Institute of Thermal Technology, Silesian University of Technology, Gliwice, Poland in cooperation with Wroclaw University of Technology.
This special issue of Journal of Energy Resources Technology presents selected scientific output of the 5th Conference on Contemporary Problems of Thermal Engineering CPOTE 2018, which was held on September 18-21, 2018 in Gliwice, Upper Silesia, Poland.
This paper shows the common developments performed by the Institute of Thermal Technology and the Research Centre for Energy Resources and Consumption regarding the assessment of natural resource degradation. Particularly, it shows the last model of the Szargut's Reference Environment, which was updated with new geological and geochemical informati...
The increasing focus on the installation of sustainable energy systems has resulted in a wide range of micro wind turbine systems being introduced in the market. Although the majority of the commercially installed wind turbines are the horizontal axis ones, vertical axis turbines are considered as a promising technology for the future. It is genera...
An example of ironworks is used to illustrate the application of thermo-economic analysis to industrial ecology. The case study analyzes the changes in blast furnace plant when part of the coke is replaced by coal. The application of direct exergy analysis apparently shows that the replacement has negative effects, which is contrary to experience....
Depletion of non-renewable natural resources is one of the factors leading mining industry to reach sustainability. Meeting this challenge entails the assessment of mineral resources as well as the mining operations needed to produce commodities. In this chapter, an exergy analysis of six minerals (aluminium, copper, chromium, gold, iron and mangan...
Conservation laws are important tools in analysis of thermal processes. In engineering practice, substance conservation law and energy conservation law are commonly used. Exergy analysis based on first and second law of thermodynamics are still rarely applied in engineering and industrial practices. Demonstration of its potential to examine the imp...
The aim of the chapter is to introduce thermoeconomics and thermoecology, which are methodologies based on exergy and cost. After introducing thermoeconomics, the concept of exergy cost and a theory that enables its calculation is presented. Exergy cost of a flow within a system is the amount of exergy resources consumed by that system that are nee...
Any activity around the world as well as further development of humankind relies on natural resources. The primary deposits, which represent the work that nature offers us, are essential for current and future civilizations. There are several examples of ancient civilizations that collapsed due to the depletion of local natural resources; the most...
Thermo-Ecological Cost theory has been applied to analyse different energy and technological systems. Chapter 11 presents in details several example applications of TEC analysis. These examples include: thermo-ecological cost analysis of hard coal with inclusion of the whole life cycle chain; thermo-ecological cost assessment of heat and electricit...
This chapter provides three examples illustrating the usefullness of the concepts of exergy, exergy cost and thermo-ecological cost. The first example is related to exergo-ecological evaluation of adsorption chiller system. System consisted of cogeneration, solar collector and adsorption chiller are analyzed using the concept of thermo-ecological c...
In most cases the assumption of the balance boundary is important from the point of view of energy and exergy analysis. Analysis in the local boundary encompassing single component of the system is in many cases constrained only for comparison of similar technologies of resources transformation. For complex analysis the system approach has to be ap...
Related to an energy unit, combustion of natural gas produces about the half of CO2 amount than coal. This however, does not necessarily mean that the greenhouse effect of natural gas fired power plants is only the half of that of coal fired. The pipeline transportation of natural gas over very long distances and leakage of methane, whose greenhous...
This chapter presents the application of the concept of thermo-ecological cost in the analysis of EU and Poland’s energy policy in the aspect of their thermodynamic motivation. The thermo-ecological cost comprising the cumulative exergy consumption connected both manufacturing the useful product and compensation of its harmful impact on the environ...
Natural resources can be evaluated from different points of view. One of them, and perhaps the most commonly known is the economic point of view. Nevertheless, the price-fixing mechanisms, rarely take into account the concrete physical characteristics which make them valuable. But natural resources have at least two physical features which make min...
The reduction of energy consumption in the blast furnace is still the subject of investigations using mathematical modelling of a blast furnace plant. Theoretical-empirical hybrid models of a blast furnace and its equipment have been presented. This model is built based on the mass and energy balances of furnace zones and empirical data from the me...
Metallurgy represents complex technological chain supplied with different kinds of primary resources. Iron metallurgy based on blast-furnace process, dominates in world steel production. Metallurgical coke is the basic fuel in this case. Its production is connected with several environmental disadvantageous impacts. One of them is the extended prod...
Metallurgy represents a complex production system of fuel and mineral non-renewable resources transformation. The effectiveness of resource management in metallurgical chains depends on the applied ore grade and on the irreversibility of components of the system. TEC can be applied to measure the influence of metallurgy on the depletion of natural...
In the paper the method for energy and ecological evaluation of refrigeration system based on the adsorption machine is presented. The energy effectiveness is calculated on the level of the primary energy consumption. The method for ecological evaluation is also discussed. In the ecological evaluation the influence on greenhouse gasses (GHG) is tak...
Polish energy sector is mainly based on coal. More than 90% of electricity is generated in steam power or heat-and-power plants fired by hard coal or lignite. Obviously, the share of coal fired units in Poland is higher than in EU-15 countries. By taxing CO2 generation EU enforces the development of low carbon technologies. The motivation behind th...
The investigation results on the reduction of slag from flash smelting furnace and the use of carbon granulates obtained from fine-grained waste materials of both the coal enrichment and coking processes have been presented in the paper. The investigation results on the reduction of slag from flash furnace and the use of carbon granulates obtained...
Unfavourable influence of human activity on the natural environment can be divided into two groups: depletion of limited non-renewable resources and rejection of harmful substances. The depletion of non-renewable resources should be minimized to keep them for generations which are yet to come (sustainable development). Exergy can be applied as a me...
Mathematical models of the processes, that proceed in energetic machines and devices, in many cases are very complicated. In such cases, the exact analytical models should be equipped with the auxiliary empirical models that describe those parameters which are difficult to model in a theoretical way. Regression or neural models identified basing on...
The paper is devoted to the problems of exergetic cost determination. A
brief description of theoretical fundamentals of exergetic cost
determination and its application are presented. The applied method of
calculations is based on the rules of determination of cumulative exergy
consumption. The additional possibilities ensured by the exergetic cos...
Szargut proposed the algorithm for determination of the influence of
irreversibility of components of thermal process on the emission of
CO2 [6]. In the presented paper, basing on Szargut's
proposal, the example of analysis of influence of operational parameters
of coal fired power plant on the local increase of CO2
emission is presented. The influ...
Citations
... It is defined in accordance with refs. [30][31][32], even if the adiabatic operating condition implies that no fossil fuel is consumed. ...
... Then, an extension of the previous 40 cost accounting method is presented, based on the concept of the TEE. This is a consistent 41 ultimate boundary of exergy cost accounting, where various exergy reservoirs, of limited 42 content, are immersed in the zero-exergy matrix as shown in Fig. 1, but they remain 43 separated from it because of some confinement constraints. Starting from this very simple 44 but meaningful framework, the concept of bioresource stock replacement (BSR) cost is 45 precisely defined, allowing the exergy cost evaluation of all biological resources used as 46 production process inputs. ...
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... • Small VAWTs, which can be classified as SWTs, are considered to be not harmful to birds according to studies of Minderman et al. (Minderman et al., 2012) and Krijgsveld et al.(Krijgsveld et al., 2009). • VAWTs can be more energy-consuming and emission-intensive, compared to HAWTs; according to studies of Lombardi et al. (Lombardi et al., 2018)and Uddin et al.(Uddin et al., 2014). However, the embodied energy of VAWTs could be reduced to 36% with the thermoplastic turbine and 40% with fiberglass turbine, reducing environmental impacts to more than 15% on average (Uddin et al., 2014). ...
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... However, quantification of greenhouse gas emissions and evaluation of energy consumption in the production of various products has a crucial contribution to reducing environmental risks (Deng et al., 2020). Not considering the quality of consumed inputs is a major problem and limitation, which in previous investigations has received less attention from researchers (Stanek et al., 2017;Sartor and Dewallef, 2017). The quality of resources employed in the manufacturing process is calculated using the exergy index. ...
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... The conclusion of their work was that the single-screw expander has great prospects in small-scale waste heat pressure energy recovery systems, as well as in new and renewable energy applications [18]. Stanek et al. presented the usefulness of exergy analysis, which in contrast to energy analysis, provides tools to indicate and quantify the origin of the electricity generated by a turboexpander [19]. Similar research was performed by Prilutskii, who compared the application of turbo-and piston expanders [20]. ...
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... Thus, an interesting extension to this work would be to analyze the build-up of in-use stocks and outflows of materials by distinguishing flows and stocks in the LCI datasets. Thermoecological approaches based on exergy and entropy (Stanek et al. 2017;Valero et al. 2015) appear to us promising ways to describe material cycles more physically. ...
... 17 While their exergy efficiency might be low, processes using renewable exergy resources do not contribute to resource depletion. 64 An indicator that has been introduced to better assess the degree of depletion of nonrenewable resource is the exergy replacement cost 65 : ...
... The inclusion of exergy-based indicators into the Industrial Ecology (IE) have been implemented by Stanek et al. [33], who applied the Thermo-Ecological Cost (TEC) theory to the analysis of different energy and technological systems (e.g., hard coal production). Exergy analysis offers also advanced tools for the evaluation of non-renewable mineral resources, as demonstrated by Valero et al. [34][35][36]. ...
... Research on the relation between exergy and ecology has also received increased attention in recent years. Valero et al. (2017) describe the theory of exergy cost and thermoecological cost, while Valero et al. (2018) Some studies have focused on climate change. For example, Berthiaume and Rosen (2017) examine limits imposed by the second law of thermodynamics on reducing greenhouse gas emissions, while Hernandez and Cullen (2019) describe exergy as a universal metric for measuring resource efficiency to address industrial decarbonisation. ...
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... The life cycle assessment (LCA) studies available in the literature have been conducted for a broad range of turbine capacities in both, onshore [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] and offshore [8,[21][22][23][24][25][26] locations. The majority of mentioned studies presents the analysis of the single turbine [3,[5][6][7][9][10][11][12][13][14][16][17][18][19][20]22,23,26,24], while other studies concern the environmental impacts of electricity produced in the wind farm [2,4,8,15,21,25]. ...
