Fossil Fuel and Biofuel Boilers in Ukraine: Trends of Changes in Levelized Cost of Heat

Stanytsina, V.V.; Artemchuk, Volodymyr; Bogoslavska, Olga; Zaporozhets, Artur; Калініченко, Антоніна; Stebila, Ján; Havrysh, Valerii; Suszanowicz, Dariusz

doi:10.3390/en15197215

Cited by 18 publications

(7 citation statements)

References 70 publications

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“…Functioning of nuclear fuel cycle facilities are considered in publications [1,2,4,[15][16][17][18], issue of developing mathematical and software tools for assessing the impact t of energy facilities on the environment is considered in works [19][20][21][22][23][24][25][26][27][28][29][30][31]. Specifics implementing of alternative and renewable energy sources are described in publications [32][33][34][35][36][37][38][39][40]. Advanced training of specialists in nuclear energy is discussed in publications [41][42][43][44].…”

Section: Literature Reviewmentioning

confidence: 99%

Perspectives of nuclear energy development in Ukraine on the global trends basis

Popov,

Iatsyshyn,

Deineha

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The article examines global trends in the development of the nuclear power industry. It includes the following: extending the operating life of nuclear power units; development of atomic energy in the context of the Paris Agreement; development of nuclear-hydrogen energy; synergistic interaction of renewable energy sources and nuclear power plants; introduction of new reactor technologies. The attitude of different countries of the world to atomic energy is described. It is determined that China and India are the leaders in developing nuclear power. It was determined that small modular reactors are considered transformative reactors that will contribute to the further development of atomic energy in the world. The advantages of small modular reactors in comparison with reactors of large capacity are described, and recommendations for selecting small modular reactors for Ukraine are formulated. Installation of small modular reactors at the operational sites of the NPPs of Ukraine can reduce the financial costs of their construction. Therefore, it will contribute to the sustainable development of the nuclear energy industry of Ukraine.

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Section: Literature Reviewmentioning

confidence: 99%

Perspectives of nuclear energy development in Ukraine on the global trends basis

Popov,

Iatsyshyn,

Deineha

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Provided that there is one of the main goals of EU as being climate neutral by 2050, companies need to achieve such goal and remain economically profitable at the same time. Therefore it is necessary to conduct business with the aim of maximizing its finances at the every possible situation and market -such as DAM [4].…”

Section: Calculating First Iteration Of Absolute Value Of Inverse Rel...mentioning

confidence: 99%

Conceptual principles of forecasting demand on the day-ahead market using changes in hourly bidded demand between previous similar days

Polukhin,

Evdokimov

2023

IOP Conf. Ser.: Earth Environ. Sci.

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On the basis of the Law on the Electricity Market adopted in 2017, the retail electricity market in Ukraine opened on January 1, 2019, and later, on July 1, 2019, the wholesale electricity market was launched. The day-ahead market (DAM) is one of the key segments of the Ukrainian electricity market. In order to implement trading strategy and successfully conduct business, to maximize the economic results in the specified market segment, it is important to understand the market situation and the structure of demand and supply. One of the indicators that must be taken into account when planning sales in the course of one’s activity is the demand for electrical energy. Currently, there are no universal algorithms in Ukraine suitable for short-term (per day) forecasting of the amount of electrical energy that will be traded on DAM. Therefore, to solve such a problem, a specialized forecasting algorithm is proposed. The basis of the developed algorithm is the possibility of considering the formulated problem in a parametric form, where, as indicators, the forecast and real data of the hourly demand on the DAM are used. At the same time, in order to find the forecast hourly demand on the market “a day ahead” – the values of the unknown indicators of the problem – an iterative method of their search is used based on statistical data of the amount of electricity purchases on the DAM, using the principle of multi-iteration analysis of changes in demand for previous similar days. The proposed algorithm is implemented in the MS Excel package, which indicates its versatility and ease of use. The high speed of obtaining a solution to the formulated problem is shown.

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“…In addition, the harmful effects of biomass are minimal-the amount of greenhouse gases released while burning this fuel is equal to the amount of CO 2 absorbed during its growth. Since there is no increase in the concentration of greenhouse gases in the atmosphere, biomass is considered a CO 2 -neutral fuel [3][4][5]. Furthermore, finely dispersed biomass in the form of waste is a by-product of the main production and therefore has a relatively low cost.…”

Section: Introductionmentioning

confidence: 99%

Increasing the Efficiency of Loading Devices for Biomass Boilers

Shyshko,

Cherniavskyi,

Shyshko

et al. 2024

Energies

Self Cite

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The article examines a method of loading biomass waste into a boiler unit, which ensures the gas tightness of the boiler’s working chamber by forming a “plug” of biomass as it moves through the cylindrical channel of the screw feeder. Local biomass wastes (sunflower husks, coniferous wood sawdust, and walnut shells) were selected for the study, a distinctive feature of which is that they did not undergo any prior processing before use (drying, fractionation, grinding, etc.). The properties of biomass as a bulk material (angle of internal friction) were determined experimentally. According to the results, sawdust from coniferous wood has an average angle of internal friction that is 1.48 times bigger than that of sunflower husks and 1.29 times bigger than walnut shells, while the average loading mass of sawdust is 2.2 times less than that of sunflower husks and 2.6 times less than that of walnut shells. This low bulk density and high angle of internal friction for sawdust suggest the likelihood of spontaneous compaction and layer suspension. Experimental studies were also conducted on the compaction force of the biomass layer. It was found that neither coniferous wood sawdust nor walnut shells can be used in the proposed feeder because the sawdust forms a dense layer that does not disperse under any compaction, and the walnut shells do not form a “plug” in the studied pressure range. Therefore, only sunflower husks were used for further studies. The empirical dependence of the density of the sunflower husk layer on the compaction pressure was obtained from the results. It was determined that to ensure a suction level through a screw feeder with a diameter of 0.1 ÷ 0.25 m into the furnace of the boiler unit of no more than 0.1 m3/h with a pressure difference between the boiler furnace and the surrounding environment ΔP = 0.05 ÷ 0.3 kPa, the relative increase in the density of the “plug” from sunflower husks should not exceed the bulk density of the uncompacted layer by more than 11.5%. Experimentally, it was determined that the geometric dimensions of the “plug” from sunflower husk, which ensure the necessary level of gas tightness of the feeder, depend only on the diameter of the channel and are 1.136·d. Calculations were made to obtain the dependencies of the compaction force of the biomass waste layer on the level of suction (in the studied range Q = 0.01 ÷ 0.1 m3/h) into the furnace of the boiler unit under controlled pressure drops (in the studied range ΔP = 0.05 ÷ 0.3 kPa) between the boiler furnace and the surrounding environment for feeders with different screw diameters (d = 0.1 ÷ 0.25 m), which can be used for the practical determination of the geometric and operational parameters of the screw feeder when operating a boiler unit on sunflower husks.

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Fossil Fuel and Biofuel Boilers in Ukraine: Trends of Changes in Levelized Cost of Heat

Cited by 18 publications

References 70 publications

Perspectives of nuclear energy development in Ukraine on the global trends basis

Perspectives of nuclear energy development in Ukraine on the global trends basis

Conceptual principles of forecasting demand on the day-ahead market using changes in hourly bidded demand between previous similar days

Increasing the Efficiency of Loading Devices for Biomass Boilers

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