This paper presents the energy and exergy analysis of thermal power plant Tuzla in Tuzla, Bosnia and Herzegovina. The main aim of this paper is to analyze the components of a 200 MW steam power plant unit in order to identify and quantify... more
This paper presents the energy and exergy analysis of thermal power plant Tuzla in Tuzla, Bosnia and Herzegovina. The main aim of this paper is to analyze the components of a 200 MW steam power plant unit in order to identify and quantify the sites with the highest exergy losses and to calculate exergy efficiency values of all components when operating at nominal load. The influence of the change in ambient temperature and block load on the value of exergy losses and exergy efficiency was taken into analysis. The analysis further includes the impact of steam block operation without high-pressure and low-pressure heaters on the exergy efficiency of the steam block. The goal of the analysis is to determine the functional state of individual steam block components after a long period of exploitation and maintenance in order to take appropriate measures to improve their technical performance. Exergy losses during nominal operation of the steam power plant unit are the largest in boiler and amount to 313.42 MW, followed by a turbine with 205.60 MW, condenser 1 with 6.03 MW, condenser 2 with 5.75 MW, while other components of the steam power plant have exergy losses in the range of 0.03 to 2.15 MW. Operation of the unit at nominal load without HPH results in an exergy efficiency decrease from 5.60 to 9.80 %, while in case of operation without HPH and LPH it results in a decrease in exergy efficiency from 9.86 to 16.40 % depending on the pattern used to calculate. The conclusion after the analysis indicates that the biggest exergy losses are in the boiler and turbine and consequently these components have the lowest exergy efficiency values. The increase in ambient temperature has different effects on individual components of the thermal power plant, increasing exergy losses of the boiler while reducing the turbine exergy losses and condensers.
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Research Interests: Engineering and Casing
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This paper presents the energy and exergy analysis of thermal power plant Tuzla in Tuzla, Bosnia and Herzegovina. The main aim of this paper is to analyze the components of a 200 MW steam power plant unit in order to identify and quantify... more
This paper presents the energy and exergy analysis of thermal power plant Tuzla in Tuzla, Bosnia and Herzegovina. The main aim of this paper is to analyze the components of a 200 MW steam power plant unit in order to identify and quantify the sites with the highest exergy losses and to calculate exergy efficiency values of all components when operating at nominal load. The influence of the change in ambient temperature and block load on the value of exergy losses and exergy efficiency was taken into analysis. The analysis further includes the impact of steam block operation without high-pressure and low-pressure heaters on the exergy efficiency of the steam block. The goal of the analysis is to determine the functional state of individual steam block components after a long period of exploitation and maintenance in order to take appropriate measures to improve their technical performance. Exergy losses during nominal operation of the steam power plant unit are the largest in boiler ...
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The paper calculates the power, exergy losses and exergy efficiencies of the high, medium and low pressure steam turbine, as well as the total exergy losses and exergy efficiency of the 200 MW steam turbine. The calculation was performed... more
The paper calculates the power, exergy losses and exergy efficiencies of the high, medium and low pressure steam turbine, as well as the total exergy losses and exergy efficiency of the 200 MW steam turbine. The calculation was performed for three modes of operation of the steam turbine with a load of 100%, 90% and 80%. For all three operating modes, the calculation of the analyzed parameters includes the operation of the steam turbine with and without turbine steam extraction. Based on the obtained results, a comparative analysis of steam turbine parameters was performed for all three operating modes and for operation with and without turbine steam extraction. Comparative analysis of the obtained results will show the influence of different operating modes of steam turbine with and without turbine steam removal on power, exergy losses and exergy efficiency of each module individually, but also on the total values of analyzed steam turbine parameters. The comparative analysis will a...
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In the paper, a thermodynamic analysis of the cogeneration organic Rankin cycle (CHP ORC) for the use of energy from biomass with working fluids was done m-xylene, p-xylene, toluene, MDM (OMTS), D4 (OMCTS), undecane and a mixture... more
In the paper, a thermodynamic analysis of the cogeneration organic Rankin cycle (CHP ORC) for the use of energy from biomass with working fluids was done m-xylene, p-xylene, toluene, MDM (OMTS), D4 (OMCTS), undecane and a mixture (toluene/MDM/m-xylene) in the estimate ratio 33/33/33. The influence of thermodynamic properties of all operating fluids and mixtures on CHP ORC performance in the regenerator and non-regenerator variant is analyzed, and the thermodynamic properties of working fluids and mixtures are optimized with the exergy efficiency of CHP ORC as a function of the target, using the genetic algorithm. The maximum CHP ORC performance values for the corresponding pressure and temperature values at the entrance to the ORC turbine were compared and analyzed under the same conditions of the heat source and defined boundary conditions. Comparative analysis of the CHP ORC parameters shows that more favorable aromatic hydrocarbons (m-xylene, p-xylene and toluene) are used for th...
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Shown the possibility of using ORC technology to transform low temperature heat source into electricity. Applying ORC CHP to be getting heat and electricity from a single heat source. A review is given ORC manufacturers with ranges of... more
Shown the possibility of using ORC technology to transform low temperature heat source into electricity. Applying ORC CHP to be getting heat and electricity from a single heat source. A review is given ORC manufacturers with ranges of power, heat source, temperature levels and used working fluid. As the working fluid plays a key role in the ORC system the generalized methodology of choice of working fluid is given. The comparison of the most commonly used working fluid through their influence on the thermodynamic or exergy efficiency of the ORC process is conducted, but also the environment and human health consequences are taken into consideration. It has been shown that the ORC system can be applied in small communities or industrial plants that have a sufficient amount of biomass to meet its demand for electricity and thermal energy.
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srednjotemperaturnih izvora toplote, pored zadovoljenja definisanih termodinamičkih, okolinskih i sigurnosnih kriterija moraju postići maksimalne vrijednosti eksergijske efikasnosti uz što manje dimenzije komponenti ORC, prije svega... more
srednjotemperaturnih izvora toplote, pored zadovoljenja definisanih termodinamičkih, okolinskih i sigurnosnih kriterija moraju postići maksimalne vrijednosti eksergijske efikasnosti uz što manje dimenzije komponenti ORC, prije svega turbine i kondenzatora. CHP ORC u pogonu sa radnim fluidom sa najmanjim vrijednostima eksergijskih gubitaka komponenti postiže maksimalne vrijednosti eksergijske efikasnosti. Analiziran je uticaj grupe radnih fluida na eksergijsku efikasnost i dimenzije kondenzatora pare ORC. Analizirani radni fluidi sa svojim termodinamičkim, okolinskim i sigurnosnim osobinama zadovoljavaju primjenu u CHP ORC za iskorištenje srednjotemperaturnih izvora toplote do 350 °C. Eksergijski gubici i dimenzije kondenzatora ORC su komparirane i analizirane pod istim uslovima izvora toplote i unaprijed definisanim graničnim uslovima. Eksergijska i dimenzionalna analiza pokazuje da je za iskorištenje srednjotemperaturnih izvora toplote od izabranih radnih fluida najpogodniji toluen...
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Fully halogenated chlorofluorocarbons (CFCs) are, despite their good thermodynamic properties, stability and non-toxicity, eliminated from use. Due to the content of one chlorine atom in the molecule, the use of hydrochlorofluorocarbons... more
Fully halogenated chlorofluorocarbons (CFCs) are, despite their good thermodynamic properties, stability and non-toxicity, eliminated from use. Due to the content of one chlorine atom in the molecule, the use of hydrochlorofluorocarbons (HCFCs) has been reduced in many European countries. The use of partially halogenated hydrofluorocarbons (HFCs) in which the molecules have no chlorine atoms, due to increased inflammability, is also to a large extent limited. This paper presents a methodology for selecting working fluids or mixtures for use in cogeneration ORCs on biomass, which will, in addition to thermodynamics, also take into account the safety and environmental requirements of working fluid acceptability. The effects of thermodynamic properties of preselected working fluids on the performance of the cogeneration ORC plant have been analyzed and the thermodynamic properties of the working fluid are optimized by the exergy efficiency of the ORC as a function of the target, using ...