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This article attempts to model interdependencies between socio-economic, energy, and environmental factors with selected data characterizing the development of the hydrogen economy. The study applies Spearman’s correlation and a linear regression model to estimate the influence of gross domestic product, population, final energy consumption, renewable energy, and CO2 emission on chosen hydrogen indicators—production, patents, energy technology research, development, and demonstration budgets. The study was conducted in nine countries selected for their actions towards a hydrogen economy based on analyses of national strategies, policies, research and development programs, and roadmaps. The results confirm the statistically significant impact of the chosen indicators, which are the drivers for the development of the hydrogen economy from 2008 to 2018. Moreover, the empirical results show that different characteristics in each country contribute to the development of the hydrogen economy vision.
Justyna Cader; Renata Koneczna; Piotr Olczak. The Impact of Economic, Energy, and Environmental Factors on the Development of the Hydrogen Economy. Energies 2021, 14, 4811 .
AMA StyleJustyna Cader, Renata Koneczna, Piotr Olczak. The Impact of Economic, Energy, and Environmental Factors on the Development of the Hydrogen Economy. Energies. 2021; 14 (16):4811.
Chicago/Turabian StyleJustyna Cader; Renata Koneczna; Piotr Olczak. 2021. "The Impact of Economic, Energy, and Environmental Factors on the Development of the Hydrogen Economy." Energies 14, no. 16: 4811.
Since increasing electricity consumption in developing countries is observed, the measures that can reduce electricity bills are of key importance for individuals. One of them is the assemblage of PV installation of their households. The fundamental parameters that may be adjusted are the number of PV panels and the change in their orientation towards the roof plane (tilt and azimuth angles). The paper presents the first study aimed at conducting a quantitative economic and environmental analysis that allows one to compare these two choices and provide valuable findings based on the specific case of a single-family house in Poland. Results indicate that NPV is higher in the case of an additional PV panel by EUR 354 per 30 years. However, an adjustable mounting rack installation provides a higher reduction of carbon emissions (by 1.2 Mg CO2/30 years). Additionally, the study provides maps that may be used to compare the economic and environmental efficiency for various orientations of roofs and PV installations throughout the country. The outcomes are mainly relevant for the residential sector because they provide information that supports the decision-making processes in the context of changes in PV installations and selecting support mechanism for renewable sources.
Piotr Olczak; Aleksandra Komorowska. An adjustable mounting rack or an additional PV panel? Cost and environmental analysis of a photovoltaic installation on a household: A case study in Poland. Sustainable Energy Technologies and Assessments 2021, 47, 101496 .
AMA StylePiotr Olczak, Aleksandra Komorowska. An adjustable mounting rack or an additional PV panel? Cost and environmental analysis of a photovoltaic installation on a household: A case study in Poland. Sustainable Energy Technologies and Assessments. 2021; 47 ():101496.
Chicago/Turabian StylePiotr Olczak; Aleksandra Komorowska. 2021. "An adjustable mounting rack or an additional PV panel? Cost and environmental analysis of a photovoltaic installation on a household: A case study in Poland." Sustainable Energy Technologies and Assessments 47, no. : 101496.
In Poland, especially since 2018, a dynamic increase in installed capacity in photovoltaics has been observed. In households with a photovoltaic installation (of which there were about 350,000 in Poland at the end of 2020), a phenomenon called ”duck curve” is observed, consisting in low energy consumption from the power grid (correlated with the simultaneous delivery of the produced PV energy to the grid) during the day and relatively high energy consumption in the evening. This case concerns days with relatively high insolation values. The aim of the work is to analyse data from 608 PV installations, including the estimation of the difference (VDC) between maximum hourly electricity overproduction and maximum hourly net electricity consumption from the grid. The maximum monthly VDC value (calculated as the average of daily values) in 2019 reached the level of 2.9 kW per one prosumer household. Calculation for each day of 2019 allowed to determine the maximum VDC value of 3.9 kW, counting on a prosumer household. The median of this value (for 365 days) was 2.08 kW. It is estimated that the maximum power fluctuation in the national power grid due to the connection of 400,000 prosumer households in the grid is approximately 1.6 GW.
Piotr Olczak; Przemysław Jaśko; Dominik Kryzia; Dominika Matuszewska; Mykhailo Illich Fyk; Artur Dyczko. Analyses of duck curve phenomena potential in polish PV prosumer households’ installations. Energy Reports 2021, 7, 4609 -4622.
AMA StylePiotr Olczak, Przemysław Jaśko, Dominik Kryzia, Dominika Matuszewska, Mykhailo Illich Fyk, Artur Dyczko. Analyses of duck curve phenomena potential in polish PV prosumer households’ installations. Energy Reports. 2021; 7 ():4609-4622.
Chicago/Turabian StylePiotr Olczak; Przemysław Jaśko; Dominik Kryzia; Dominika Matuszewska; Mykhailo Illich Fyk; Artur Dyczko. 2021. "Analyses of duck curve phenomena potential in polish PV prosumer households’ installations." Energy Reports 7, no. : 4609-4622.
Supervised machine learning and its algorithms are a developing trend in the prediction of rockfill material (RFM) mechanical properties. This study investigates supervised learning algorithms—support vector machine (SVM), random forest (RF), AdaBoost, and k-nearest neighbor (KNN) for the prediction of the RFM shear strength. A total of 165 RFM case studies with 13 key material properties for rockfill characterization have been applied to construct and validate the models. The performance of the SVM, RF, AdaBoost, and KNN models are assessed using statistical parameters, including the coefficient of determination (R2), Nash–Sutcliffe efficiency (NSE) coefficient, root mean square error (RMSE), and ratio of the RMSE to the standard deviation of measured data (RSR). The applications for the abovementioned models for predicting the shear strength of RFM are compared and discussed. The analysis of the R2 together with NSE, RMSE, and RSR for the RFM shear strength data set demonstrates that the SVM achieved a better prediction performance with (R2 = 0.9655, NSE = 0.9639, RMSE = 0.1135, and RSR = 0.1899) succeeded by the RF model with (R2 = 0.9545, NSE = 0.9542, RMSE = 0.1279, and RSR = 0.2140), the AdaBoost model with (R2 = 0.9390, NSE = 0.9388, RMSE = 0.1478, and RSR = 0.2474), and the KNN with (R2 = 0.6233, NSE = 0.6180, RMSE = 0.3693, and RSR = 0.6181). Furthermore, the sensitivity analysis result shows that normal stress was the key parameter affecting the shear strength of RFM.
Mahmood Ahmad; Paweł Kamiński; Piotr Olczak; Muhammad Alam; Muhammad Iqbal; Feezan Ahmad; Sasui Sasui; Beenish Khan. Development of Prediction Models for Shear Strength of Rockfill Material Using Machine Learning Techniques. Applied Sciences 2021, 11, 6167 .
AMA StyleMahmood Ahmad, Paweł Kamiński, Piotr Olczak, Muhammad Alam, Muhammad Iqbal, Feezan Ahmad, Sasui Sasui, Beenish Khan. Development of Prediction Models for Shear Strength of Rockfill Material Using Machine Learning Techniques. Applied Sciences. 2021; 11 (13):6167.
Chicago/Turabian StyleMahmood Ahmad; Paweł Kamiński; Piotr Olczak; Muhammad Alam; Muhammad Iqbal; Feezan Ahmad; Sasui Sasui; Beenish Khan. 2021. "Development of Prediction Models for Shear Strength of Rockfill Material Using Machine Learning Techniques." Applied Sciences 11, no. 13: 6167.
Justyna Cader; Piotr Olczak; Renata Koneczna. Regional dependencies of interest in the “My Electricity” photovoltaic subsidy program in Poland. Polityka Energetyczna – Energy Policy Journal 2021, 24, 97 -116.
AMA StyleJustyna Cader, Piotr Olczak, Renata Koneczna. Regional dependencies of interest in the “My Electricity” photovoltaic subsidy program in Poland. Polityka Energetyczna – Energy Policy Journal. 2021; 24 (2):97-116.
Chicago/Turabian StyleJustyna Cader; Piotr Olczak; Renata Koneczna. 2021. "Regional dependencies of interest in the “My Electricity” photovoltaic subsidy program in Poland." Polityka Energetyczna – Energy Policy Journal 24, no. 2: 97-116.
Krystian Majchrzak; Piotr Olczak; Dominika Matuszewska; Magdalena Wdowin. Economic and environmental assessment of the use of electric cars in Poland. Polityka Energetyczna – Energy Policy Journal 2021, 24, 153 -168.
AMA StyleKrystian Majchrzak, Piotr Olczak, Dominika Matuszewska, Magdalena Wdowin. Economic and environmental assessment of the use of electric cars in Poland. Polityka Energetyczna – Energy Policy Journal. 2021; 24 (1):153-168.
Chicago/Turabian StyleKrystian Majchrzak; Piotr Olczak; Dominika Matuszewska; Magdalena Wdowin. 2021. "Economic and environmental assessment of the use of electric cars in Poland." Polityka Energetyczna – Energy Policy Journal 24, no. 1: 153-168.
Piotr Olczak. Temperature verification method of solar heat gains in installations with flat plate solar collectors – case study. Polityka Energetyczna – Energy Policy Journal 2021, 24, 115 -132.
AMA StylePiotr Olczak. Temperature verification method of solar heat gains in installations with flat plate solar collectors – case study. Polityka Energetyczna – Energy Policy Journal. 2021; 24 (1):115-132.
Chicago/Turabian StylePiotr Olczak. 2021. "Temperature verification method of solar heat gains in installations with flat plate solar collectors – case study." Polityka Energetyczna – Energy Policy Journal 24, no. 1: 115-132.
The several government subsidies available in Poland contributed to an increased interest in PV installations. Installed PV capacity increased from 100 MW in 2016 up to 2682.7 MW in July 2020. In 2019 alone, 104,000 microinstallations (up to 50 kWp) were installed in Poland. The paper determines the energy gain and the associated reduction of CO2 emissions for two types of solar installation located in Poland. The monofacial solar modules with a power of 5.04 kWp (located in Leki) and bifacial solar modules with a power of 6.1 kWp (located in Bydgoszcz). Both installations use mono-crystalline Si-based 1st generation PV cells. With comparable insolation, a bifacial installation produces approx. 10% (for high insolation) to 28% (for low insolation) more energy than a monofacial PV installation. Avoided annual CO2 emission in relation to the installation capacity ranges from 0.58 to 0.64 Mg/kWp for monofacial and from 0.68 to 0.74 Mg/kWp for bifacial and is on average approx. 16% higher for bifacial installations. Cost-benefit analyses were made. For different electricity prices, the NPV for monofacial and bifacial was determined.
Piotr Olczak; Małgorzata Olek; Dominika Matuszewska; Artur Dyczko; Tomasz Mania. Monofacial and Bifacial Micro PV Installation as Element of Energy Transition—The Case of Poland. Energies 2021, 14, 499 .
AMA StylePiotr Olczak, Małgorzata Olek, Dominika Matuszewska, Artur Dyczko, Tomasz Mania. Monofacial and Bifacial Micro PV Installation as Element of Energy Transition—The Case of Poland. Energies. 2021; 14 (2):499.
Chicago/Turabian StylePiotr Olczak; Małgorzata Olek; Dominika Matuszewska; Artur Dyczko; Tomasz Mania. 2021. "Monofacial and Bifacial Micro PV Installation as Element of Energy Transition—The Case of Poland." Energies 14, no. 2: 499.
There are a lot of studies that show the legitimacy of subsidizing renewable energy; however, some mechanisms are defective, and there are problems with the appropriate allocation of funds. Therefore, this paper aims to look at the situation of allocating funds to photovoltaics (PV) micro-installations in Poland through the “My Electricity” program. The article presents the results of analyses aimed at identifying inequalities between provinces in the use of funds available under the “My Electricity” program and verifying whether these inequalities are getting worse and whether the intensity of support should not be territorially conditioned in terms of maximization an electricity production. As part of two editions of the “My Electricity” program (until 1 August 2020), over 64,000 PV micro-installations were created with an average power of approximately 5.7 kWp. The total installed PV capacity was 367.1 MWp (1st edition: 159.3 MWp, 2nd edition: 207.8 MWp). Financial resources (as a whole), in the second edition of “My Electricity” program, were distributed better than in the first edition. In the first edition, as much as 7.60% of funds were allocated inefficiently; in the second edition, it was only 3.88%. Allocation surpluses occur in provinces where the average disposable income is low and where there are a small number of households. There is a potential to introduce a territorial project selection criteria. The analysis shows that the criteria should promote provinces with higher disposable income and a larger number of households.
Piotr Olczak; Dominik Kryzia; Dominika Matuszewska; Marta Kuta. “My Electricity” Program Effectiveness Supporting the Development of PV Installation in Poland. Energies 2021, 14, 231 .
AMA StylePiotr Olczak, Dominik Kryzia, Dominika Matuszewska, Marta Kuta. “My Electricity” Program Effectiveness Supporting the Development of PV Installation in Poland. Energies. 2021; 14 (1):231.
Chicago/Turabian StylePiotr Olczak; Dominik Kryzia; Dominika Matuszewska; Marta Kuta. 2021. "“My Electricity” Program Effectiveness Supporting the Development of PV Installation in Poland." Energies 14, no. 1: 231.
In Poland an increase in the of number solar thermal collectors is observed in household applications. For economic and ecological profitability the creation of a solar thermal installation design in a proper manner is essential. In order to determine solar installations size, software...
Piotr Olczak. The comparison of solar installation heat gains and SHW simulation results – case study. Polityka Energetyczna – Energy Policy Journal 2020, 23, 41 -54.
AMA StylePiotr Olczak. The comparison of solar installation heat gains and SHW simulation results – case study. Polityka Energetyczna – Energy Policy Journal. 2020; 23 (3):41-54.
Chicago/Turabian StylePiotr Olczak. 2020. "The comparison of solar installation heat gains and SHW simulation results – case study." Polityka Energetyczna – Energy Policy Journal 23, no. 3: 41-54.
The paper considers technical and economic possibilities to provide geothermal heat to individual recipients using a mobile thermal storage system (M-TES) in Polish conditions. The heat availability, temperature and heat cost influence the choice of location—Bańska Niżna, near Zakopane in the southern part of the Poland. The indirect contact energy storage container was selected with phase change material characterized by a melting temperature of 70 °C and a heat storage capacity of 250 kJ/kg, in the amount of 800 kg. The economic profitability of the M-TES system (with a price per warehouse of 6000 EUR, i.e., a total of 12,000 EUR—two containers are needed) can be achieved for a heat demand of 5000 kWh/year with the price of a replaced heat source at the level of 0.21 EUR/kWh and a distance between the charging station and building (heat recipient) of 0.5 km. For the heat demand of 15,000 kWh/year, the price for the replaced heat reached EUR 0.11/kWh, and the same distance. In turn, for a demand of 25,000 kWh/year, the price of the replaced heat source reached 0.085 EUR/kWh. The distance significantly affected the economic profitability of the M-TES system—for the analyzed case, a distance around 3-4 km from the heat source should be considered.
Dominika Matuszewska; Marta Kuta; Piotr Olczak. Techno-Economic Assessment of Mobilized Thermal Energy Storage System Using Geothermal Source in Polish Conditions. Energies 2020, 13, 3404 .
AMA StyleDominika Matuszewska, Marta Kuta, Piotr Olczak. Techno-Economic Assessment of Mobilized Thermal Energy Storage System Using Geothermal Source in Polish Conditions. Energies. 2020; 13 (13):3404.
Chicago/Turabian StyleDominika Matuszewska; Marta Kuta; Piotr Olczak. 2020. "Techno-Economic Assessment of Mobilized Thermal Energy Storage System Using Geothermal Source in Polish Conditions." Energies 13, no. 13: 3404.
There are many financial ways to intensify the construction of new renewable energy sources installations, among others: feed in tariff, grants. An example of photovoltaic grant support in Poland is the “Mój Prąd” [My Electricity] program created in 2019. This program, with a budget of...
Piotr Olczak; Dominika Matuszewska; Dominik Kryzia. ”Mój Prąd” as an example of the photovoltaic one off grant program in Poland. Polityka Energetyczna – Energy Policy Journal 2020, 23, 123 -138.
AMA StylePiotr Olczak, Dominika Matuszewska, Dominik Kryzia. ”Mój Prąd” as an example of the photovoltaic one off grant program in Poland. Polityka Energetyczna – Energy Policy Journal. 2020; 23 (2):123-138.
Chicago/Turabian StylePiotr Olczak; Dominika Matuszewska; Dominik Kryzia. 2020. "”Mój Prąd” as an example of the photovoltaic one off grant program in Poland." Polityka Energetyczna – Energy Policy Journal 23, no. 2: 123-138.
The analysis of a solar installation operation was conducted on the example of a detached house in the Lesser Poland province in Poland. A gas boiler and three flat-plate collectors are located inside the house, which are used for heating water in the hot water tank with a volume of 220 dm 3...
Piotr Olczak. The influence of excessive solar heat gains on heat loss in the hot water tank – case study. Polityka Energetyczna – Energy Policy Journal 2020, 23, 91 -104.
AMA StylePiotr Olczak. The influence of excessive solar heat gains on heat loss in the hot water tank – case study. Polityka Energetyczna – Energy Policy Journal. 2020; 23 (2):91-104.
Chicago/Turabian StylePiotr Olczak. 2020. "The influence of excessive solar heat gains on heat loss in the hot water tank – case study." Polityka Energetyczna – Energy Policy Journal 23, no. 2: 91-104.
Micro-cogeneration (mCHP) is a promising solution for the generation of heat and electricity in households, it contributes to reducing carbon dioxide emissions in countries where the production of electricity is mainly based on fossil fuels. Its dissemination in Poland faces barriers in the form of high purchase prices in relation to electricity productivity. In this work 1% of the household population in Poland was analyzed using the Monte Carlo method. It was found that for mCHP to become economically profitable for a group of at least 10,000 households, its price should fall from around 18,000 euros (711.5 euros/kWth and 18,000 euros/kWe) to 4800 euros (189.7 euros/kWth and 4800 euros/kWe) and for 100,000 households to 4100 euros (162.1 euros/kWth and 4100 euros/kWe). These calculations were made for fixed gas and electricity prices. The analysis also included cases of various changes in gas and energy prices. Faster growth of electricity prices than gas prices reduce the profitability barrier. In addition, a building located in Lesser Poland region was analyzed, with an above average demand for electricity and heat. Gas micro-cogeneration becomes profitable for this household at a price of 3700 euros (146.2 euros/kWth and 3700 euros/kWe) at fixed gas and electricity prices.
Dominik Kryzia; Marta Kuta; Dominika Matuszewska; Piotr Olczak. Analysis of the Potential for Gas Micro-Cogeneration Development in Poland Using the Monte Carlo Method. Energies 2020, 13, 3140 .
AMA StyleDominik Kryzia, Marta Kuta, Dominika Matuszewska, Piotr Olczak. Analysis of the Potential for Gas Micro-Cogeneration Development in Poland Using the Monte Carlo Method. Energies. 2020; 13 (12):3140.
Chicago/Turabian StyleDominik Kryzia; Marta Kuta; Dominika Matuszewska; Piotr Olczak. 2020. "Analysis of the Potential for Gas Micro-Cogeneration Development in Poland Using the Monte Carlo Method." Energies 13, no. 12: 3140.
In the research we examined the influence of a few geostatistical models (interpolators and kriging models) on the resource base and economic efficiency measures, on the example of coking coal deposits. The research was carried out in scenario-based mode, with 4 alternative analytic models prepared. The assessment criteria for fitted variability models based on deviations of selected technical and economic indicators and parameters, such as: volume of reserves, price of coking coal, production cost, EBITDA, NPV, IRR, mining height, coal yield, total waste volume, mine lifetime were examined. The variability of seam structural parameters and coking coal quality parameters was modelled with use of interpolators based on finite element method (FEM), inverse distance weighting method (Inverse), as well as triangulation coupled with extrapolation (Planar). Also model C was built separately, where ordinary kriging was used to assess empirical variograms and theoretical models of quality and quantity parameters. A dedicated discount model was used for generating the resultant economic and financial indicators. Monte Carlo simulation (bootstrap method) was applied with empirical copulas as binding functions. It was demonstrated in the course of the research that the selection of geostatistical model is of significant importance for the assessment of geological, technical and economic potential of the analysed deposit. It was shown that for the mean size of resource base, in the order of 44.6 million Mg (Ref. Model), the differences in estimated volume of reserves may reach 18%. For relatively insignificant differences in operating costs and coal price distributions, the highest differences in totalled EBITDA amounted to some 2.054 billion PLN (18%). NPV differences were calculated at maximum of 16%, whereas the IRR deviations reached 9%. Depending on the interpolator used, the mining height may differ relatively by maximum of 18%, mean waste volume by 17%, mean coal yield by 7%, while mine lifetime by maximum of 10%. Relative differences may reach a few dozen percent (in certain cases of other technical and economic parameters). Based on this data, we formed the conclusion that these differences are significant. Also the assessment of Spearman's rank correlation coefficients may provide insufficient information about correlation structure, what had been verified with use of empirical copulas.
Michał Kopacz; Jarosław Kulpa; Dominik Galica; Piotr Olczak. The influence of variability models for selected geological parameters on the resource base and economic efficiency measures - Example of coking coal deposit. Resources Policy 2020, 68, 101711 .
AMA StyleMichał Kopacz, Jarosław Kulpa, Dominik Galica, Piotr Olczak. The influence of variability models for selected geological parameters on the resource base and economic efficiency measures - Example of coking coal deposit. Resources Policy. 2020; 68 ():101711.
Chicago/Turabian StyleMichał Kopacz; Jarosław Kulpa; Dominik Galica; Piotr Olczak. 2020. "The influence of variability models for selected geological parameters on the resource base and economic efficiency measures - Example of coking coal deposit." Resources Policy 68, no. : 101711.
In Poland, various solar collector systems are used; among them, the most popular are flat plate collectors (FPCs) and evacuated tube collectors (ETCs). The work presents two installations located at a distance of 80 km apart, working in similar external conditions. One of them contains 120 flat plate collectors and works for the preparation of hot water in a swimming pool building; the second one consists of 32 evacuated tube collectors with a heat pipe and supports the preparation of domestic hot water for a multi-family house. During the comparison of the two quite large solar installations, it was confirmed that the use of evacuated tube solar collectors shows a much better solar energy productivity than flat plate collectors for the absorber area. Higher heat solar gains (by 7.9%) were also observed in the case of the gross collector area. The advantages of evacuated tube collectors are observed mainly during colder periods, which allows for a steadier thermal energy production.
Piotr Olczak; Dominika Matuszewska; Jadwiga Zabagło. The Comparison of Solar Energy Gaining Effectiveness between Flat Plate Collectors and Evacuated Tube Collectors with Heat Pipe: Case Study. Energies 2020, 13, 1829 .
AMA StylePiotr Olczak, Dominika Matuszewska, Jadwiga Zabagło. The Comparison of Solar Energy Gaining Effectiveness between Flat Plate Collectors and Evacuated Tube Collectors with Heat Pipe: Case Study. Energies. 2020; 13 (7):1829.
Chicago/Turabian StylePiotr Olczak; Dominika Matuszewska; Jadwiga Zabagło. 2020. "The Comparison of Solar Energy Gaining Effectiveness between Flat Plate Collectors and Evacuated Tube Collectors with Heat Pipe: Case Study." Energies 13, no. 7: 1829.
Power conversion systems based on the Organic Rankine Cycle (ORC) have been identified as a potential technology especially in converting low-grade renewable sources or waste heat. However, it is necessary to improve efficiency of ORC systems. This paper focuses on use of low geothermal resources (for temperature range of 80–128 °C and mass flow 100 kg/s) by using modified ORC. A modification of conventional binary power plant is conducted by combining gas turbines to increase quality of steam from a geothermal well. An analysis has been conducted for three different working fluids: R245fa, R1233zd(E) and R600. The paper discusses the impact of parameter changes not only on system efficiency but on other performance indicators. The results were compared with a conventional geothermal Organic Rankine Cycle (ORC). Increasing of geothermal steam quality by supplying exhaust gas from a gas turbine to the installation has a positive effect on the system efficiency and power. The highest efficiency of the modified ORC system has been obtained for R1233zd(E) as a working fluid and it reaches values from 12.21% to 19.20% (depending on the temperature of the geothermal brine). In comparison, an ORC system without gas turbine support reaches values from 9.43% to 17.54%.
Dominika Matuszewska; Piotr Olczak. Evaluation of Using Gas Turbine to Increase Efficiency of the Organic Rankine Cycle (ORC). Energies 2020, 13, 1499 .
AMA StyleDominika Matuszewska, Piotr Olczak. Evaluation of Using Gas Turbine to Increase Efficiency of the Organic Rankine Cycle (ORC). Energies. 2020; 13 (6):1499.
Chicago/Turabian StyleDominika Matuszewska; Piotr Olczak. 2020. "Evaluation of Using Gas Turbine to Increase Efficiency of the Organic Rankine Cycle (ORC)." Energies 13, no. 6: 1499.
A domestic hot water (DHW) system has been modernized in a multi-family house, located in the southeastern part of Poland, inhabited by 105 people. The existing heating system (2 gas boilers) was extended by a solar system consisting of 32 evacuated tube collectors with a heat pipe (the...
Piotr Olczak; Małgorzata Olek; Dominik Kryzia. The ecological impact of using photothermal and photovoltaic installations for DHW preparation. Polityka Energetyczna – Energy Policy Journal 2020, 23, 65 -74.
AMA StylePiotr Olczak, Małgorzata Olek, Dominik Kryzia. The ecological impact of using photothermal and photovoltaic installations for DHW preparation. Polityka Energetyczna – Energy Policy Journal. 2020; 23 (1):65-74.
Chicago/Turabian StylePiotr Olczak; Małgorzata Olek; Dominik Kryzia. 2020. "The ecological impact of using photothermal and photovoltaic installations for DHW preparation." Polityka Energetyczna – Energy Policy Journal 23, no. 1: 65-74.
The paper analyses possibilities of a hard coal mine operation as an electricity consumer capable of reducing instantaneous demand for electric power in the case of a Demand Side Response (DSR) call. The analyses considered the risk of service provision or non-provision based on the 2018 data on the electricity consumption and on parameters of the Polish power system. The analyses applied to two types of DSR participation programmes: guaranteed and current, and to an example of hard coal mine from the area of the Upper Silesia, which ordered power was 20 MW. For the current programme (without fines for service non-provision) the optimum value – from the financial risk point of view - was calculated as 6 MW, and for the guaranteed programme results were determined depending on the ratio of price for service provision to the fine for non-provision.
Piotr Olczak; Dominik Kryzia; Dominika Matuszewska; Artur Halbina. Analysis of financial risk of a hard coal mine participation in DSR mechanisms in Poland – a case study. E3S Web of Conferences 2019, 123, 01005 .
AMA StylePiotr Olczak, Dominik Kryzia, Dominika Matuszewska, Artur Halbina. Analysis of financial risk of a hard coal mine participation in DSR mechanisms in Poland – a case study. E3S Web of Conferences. 2019; 123 ():01005.
Chicago/Turabian StylePiotr Olczak; Dominik Kryzia; Dominika Matuszewska; Artur Halbina. 2019. "Analysis of financial risk of a hard coal mine participation in DSR mechanisms in Poland – a case study." E3S Web of Conferences 123, no. : 01005.
Poland is the leader in hard coal mining in the European Union and in generation of electricity on this basis, it is related also to low generation of energy from renewable energy sources, in particular photovoltaic installations. The paper analyses the potential of PV installations application for the needs of a selected hard coal mine from the Upper Silesian Coal Basin. Using the hourly data on its electricity consumption in 2018 various sizes of PV installations were selected, a simple payback period was calculated as well as the percentage of energy from the installation use for the current mine operations. It has been shown that in the case of a mine, having available 20 MW of ordered power and average consumption of approx. 14 MW, an installation of 20 MWp rating covers approx. 15% of the electricity demand per year, while for 1 o’clock p.m., i.e. the hour at which most frequently the peak consumption occurred, the share in electricity demand coverage by the PV installation of this power on average amounts to approx. 50% per year.
Sylwester Kaczmarzewski; Piotr Olczak; Artur Halbina. Issues of photovoltaic installation size choice for a hard coal mine. E3S Web of Conferences 2019, 123, 01014 .
AMA StyleSylwester Kaczmarzewski, Piotr Olczak, Artur Halbina. Issues of photovoltaic installation size choice for a hard coal mine. E3S Web of Conferences. 2019; 123 ():01014.
Chicago/Turabian StyleSylwester Kaczmarzewski; Piotr Olczak; Artur Halbina. 2019. "Issues of photovoltaic installation size choice for a hard coal mine." E3S Web of Conferences 123, no. : 01014.