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1.

001-es BibID:BIBFORM117360
035-os BibID:(cikkazonosító)8009 (Scopus)85180685051
Első szerző:Bai Attila (agrár-közgazdász)
Cím:Economic Evaluation of a 1 MWel capacity Power-to-Biomethane system / Attila Bai, Péter Balogh, Adrián Nagy, Zoltán Csedő, Botond Sinóros-Szabó, Gábor Pintér, Sanjeev Kumar Prajapati, Amit Singh, Zoltán Gabnai
Dátum:2023
ISSN:1996-1073
Megjegyzések:Power-to-biomethane (bio-P2M) is a novel technology that combines the long-term storage of periodically available renewable energy sources (RES) and the upgrading of biogas. This article introduces a complex economic analysis of a 1 megawatt electric (MWel) capacity bio-P2M system based on economic characteristics considered to be typical in practice. The evaluation includes an investment analysis to present the basic scenario, a sensitivity analysis and a unit cost calculation to show the economic viability, the cost structure and the possible reserves of the synthetic natural gas (SNG) as a final output. The risk analysis is executed using Monte Carlo simulation, and the final results are the mean and standard deviation of the outputs, distribution functions and probabilities. Our results show that a significant state subsidy would be needed to boost competitiveness either in terms of investment costs (44% in our calculation) or in technology development to improve technological effectiveness. Another important competitiveness issue is the full utilization of the plant and the lowest possible price for the electricity used. If both cannot be optimized at the same time, then the first one is more important. Natural gas prices and the full utilization of waste heat might result in smaller changes.
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
P2G
power-to-gas
biomethane
price
cost
investment
Megjelenés:Energies. - 16 : 24 (2023), p. 1-27. -
További szerzők:Balogh Péter (1970-) (agrármérnök) Nagy Adrián Szilárd (1975-) (gazdasági agrármérnök) Csedő Zoltán Sinóros-Szabó Botond (1948-) (mezőgazdasági gépészmérnök) Pintér Gábor (1983-) (közgazdász) Prajapati, Sanjeev Kumar Singh, Amit Gabnai Zoltán (1988-) (gazdasági agrármérnök)
Pályázati támogatás:2019-2.1.13-TÉT_IN-2020-00061
Egyéb
TKP2021-NKTA-32
Egyéb
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2.

001-es BibID:BIBFORM089923
035-os BibID:(cikkazonosító)5614 (WoS)000588937600001 (Scopus)85094979799
Első szerző:Mizik Tamás
Cím:The Major Driving Forces of the EU and US Ethanol Markets with Special Attention Paid to the COVID-19 Pandemic / Mizik Tamás, Nagy Lajos, Gabnai Zoltán, Bai Attila
Dátum:2020
ISSN:1996-1073
Megjegyzések:Ethanol is a widely produced fuel, as well as a fuel additive. Its price is closely related to the price of gasoline, its major substitute. This paper focuses on the impacts of the related variables on regional ethanol prices. Additionally, the length of the price dataset made it possible to isolate the impacts of COVID-19 on the ethanol prices. Using multiple regression and Confirmatory Factor Analyses, we found no significant correlation between the European and US ethanol prices because the major influencing factors were regionally different. In the case of the European ethanol markets, the positive factors were wheat, maize, and potassium chloride prices, while the European sugar and diammonium phosphate prices were negative. In the US markets, gasoline, sugar, and most of the artificial fertilizer prices were positive, while wheat prices were negative. Based on factor analysis, artificial fertilizers and maize factors proved to be important to the European markets, while US ethanol prices were driven by the crude oil-gasoline and raw materials factors. The COVID variable showed no significant connection with the EU prices, but negatively affected the US ethanol prices. This is explained by the different market characteristics, as the US is not only the major consumer, but also the major producer of the different oil products. Therefore, COVID-19 had a double effect on their oil and ethanol markets.
Tárgyszavak:Agrártudományok Élelmiszertudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
ethanol
oil
price analysis
correlation
COVID-19
Megjelenés:Energies. - 13 : 21 (2020), p. 1-22. -
További szerzők:Nagy Lajos (1964-) (agrármérnök) Gabnai Zoltán (1988-) (gazdasági agrármérnök) Bai Attila (1967-) (agrár-közgazdász)
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3.

001-es BibID:BIBFORM074732
035-os BibID:(cikkazonosító)1135 (WoS)000435610300113 (Scopus)85047078463
Első szerző:Nagy Dávid
Cím:Economic Analysis of Pellet Production in Co-Digestion Biogas Plants / Dávid Nagy, Péter Balogh, Zoltán Gabnai, József Popp, Judit Oláh, Attila Bai
Dátum:2018
ISSN:1996-1073
Megjegyzések:In our paper we examine the economics of a technological process which utilizes the separated biogas plant digestate as the primary material and, as auxiliary material, the waste heat produced by the cogeneration process, to produce a marketable pellet which can be used in two ways (to supply soil nutrients and heat energy). Using multivariate linear regression model we developed an equation for the biogas yield from the modelled production recipe and expected nutrient pellet prices, and sensitivity analysis were also performed for the substrate dry matter content. We found that pellets can be produced at a cost of 88?90 EUR/ton with a 6 to 10% dry matter substrate content and that, primarily, sales of pellets for heating justify pelleting; producer's own use and use for nutrient purposes can only be justified in exceptional cases. In the case of dry solid content above 5%, the process does not require the total amount of waste heat; some of this can be used to cover other heat requirements
Tárgyszavak:Társadalomtudományok Közgazdaságtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
biogas
manure
economics
pellet
waste heat
Megjelenés:Energies. - 11 : 5 (2018), p. 1-21. -
További szerzők:Balogh Péter (1970-) (agrármérnök) Gabnai Zoltán (1988-) (gazdasági agrármérnök) Popp József (1955-) (közgazdász) Oláh Judit (1973-) (agrárközgazdász, logisztika) Bai Attila (1967-) (agrár-közgazdász)
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4.

001-es BibID:BIBFORM100417
035-os BibID:(cikkazonosító)1539 (WoS)000824087900001 (Scopus)85127387165
Első szerző:Novotny Ádám (közgazdász)
Cím:National Culture and the Market Development of Battery Electric Vehicles in 21 Countries / Adam Novotny, Inez Szeberin, Sándor Kovács, Domicián Máté
Dátum:2022
ISSN:1996-1073
Megjegyzések:Electric vehicles (EVs) have become a symbol of the fight against climate change. However, in many countries, the market development of EVs is sluggish, and adoption rates greatly vary worldwide. This study examines the impact of Hofstede's six dimensions of national culture on the development of the electric car market using sales data from 2019 and 2020 in 21 OECD countries. Results of (OLS) linear regression analyses show that uncertainty avoidance, individualism, masculinity, and indulgence have a significantly negative impact on the sales of battery electric cars, while long-term orientation positively influences their market share. The results indicate that national culture is an important cross-country factor that influences the rate and direction of the adoption electric cars. The research also explains how cultural values are translated into the purchase of EVs and provides marketers and policymakers with an insight into how they can increase the spread of alternative-fuel vehicles.
Tárgyszavak:Műszaki tudományok Közlekedéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
battery electric vehicles (BEVs)
national culture
Hofstede
OLS linear regression
Megjelenés:Energies. - 15 : 4 (2022), p. 1-16. -
További szerzők:Szeberin Inez Kovács Sándor (1978-) (matematika tanár) Máté Domicián (1976-) (közgazdász, informatika tanár)
Pályázati támogatás:ÚNKP-21-5-DE-78
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5.

001-es BibID:BIBFORM075108
035-os BibID:(cikkazonosító)2392 (WoS)000446604500213 (Scopus)85053891408
Első szerző:Popp József (közgazdász)
Cím:The relationship between prices of various metals, oil and scarcity / József Popp, Judit Oláh, Mária Farkas Fekete, Zoltán Lakner, Domicián Máté
Dátum:2018
ISSN:1996-1073
Megjegyzések:No consensus has been reached on the problem of solving resource depletion. A recognition of the fact that resources are not endless and the Earth is a finite globe reinforces the idea that the vision of continuous economic growth is not sustainable over time. The aim of this paper is to examine the efficacy of real prices as an indicator of metals and oil in consideration of growth tendencies in the Consumer Price Indexes. In addition, enhancing the current literature on commodity price interrelationships, the main contribution of this study is the substitution of different proxies in order to justify the effect of scarcity and crude oil changes on the examined metal group prices. In order to demonstrate the usefulness of scarcity as an indicator of real price deviations, the study has been conducted involving various non-renewable metals, i.e., copper, molybdenum, zinc, gold and platinum group metals. The real price indices and metal prices of the US market are constructed between 1913 and 2015. Moreover, additional econometric analyses are also carried out to discover whether prices of various metals associate with oil prices and scarcity, as the proxy of reserves-to-production ratio. The linear regression results seem to suggest that the effects of the R/P ratios are negatively correlated with each of the examined precious (gold, PGMs), mass consumable (copper, zinc) and doping agent (molybdenum) metals from 1991 to 2015. An increase in oil-prices is positively associated with the price levels of each non-renewable resource in the short-run. The findings of multivariate co-integration and Granger causality tests also suggest that pairwise and direct relationships among these variables seem to arise in the long-run. These findings indicate essential questions that must be addressed by future generations in order to appropriately solve scarcity problems.
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
scarcity
reserves
real prices
non-renewable resources
inflation
energy policies
Megjelenés:Energies. - 11 : 9 (2018), p. 1-19. -
További szerzők:Oláh Judit (1973-) (agrárközgazdász, logisztika) Farkasné Fekete Mária (1951-) (közgazdász) Lakner Zoltán (agrárökonómia) Máté Domicián (1976-) (közgazdász, informatika tanár)
Pályázati támogatás:ÚNKP-18-4
egyéb
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6.

001-es BibID:BIBFORM104473
035-os BibID:(WoS)000881297100001 (Scopus)85141875008
Első szerző:Rabbi, Mohammad Fazle (közgazdász)
Cím:Energy Security and Energy Transition to Achieve Carbon Neutrality / Mohammad Fazle Rabbi, József Popp, Domicián Máté, Sándor Kovács
Dátum:2022
ISSN:1996-1073
Megjegyzések:Successful energy transitions, also referred to as leapfrog development, present enormous prospects for EU nations to become carbon neutral by shifting from fossil fuels to renewable energy sources. Along with climate change, EU countries must address energy security and dependency issues, exacerbated by factors such as the COVID-19 pandemic, rising energy costs, conflicts between Russia and Ukraine, and political instability. Diversifying energy sources, generating renewable energy, increasing energy efficiency, preventing energy waste, and educating the public about environmental issues are proposed as several strategies. The study draws the conclusion that central European countries may transition to a clean energy economy and become carbon neutral on economic and strategic levels by locating alternative clean energy supply sources, reducing energy use, and producing renewable energy. According to the study, the EU energy industry can be decarbonised and attain energy security using three basic strategies, such as supply diversification, energy savings, and quicker adoption of renewable energy to replace fossil fuels. The energy transformation industry still needs to improve energy efficiency, incorporate a circular and sustainable bioeconomy, and support renewable energies, including solar, wind, hydropower, nuclear, and hydrogen.
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
energy security
energy efficiency
energy transition
renewable energy
energy trilemma
environmental sustainability
carbon neutrality
Megjelenés:Energies. - 15 : 21 (2022), p. 1-18. -
További szerzők:Popp József (1955-) (közgazdász) Máté Domicián (1976-) (közgazdász, informatika tanár) Kovács Sándor (1978-) (matematika tanár)
Pályázati támogatás:Bolyai János Kutatási Ösztöndíj
Egyéb
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7.

001-es BibID:BIBFORM073393
035-os BibID:(cikkazonosító)1114 (WoS)000435610300092 (Scopus)85047097028
Első szerző:Zsiborács Henrik (PhD hallgató)
Cím:Comparison of thermal models for ground-mounted south-facing photovoltaic technologies: a practical case study / Henrik Zsiborács, Gábor Pintér, Attila Bai, József Popp, Zoltán Gabnai, Béla Pályi, István Farkas, Nóra Hegedűsné Baranyai, Christian Gützer, Heidelinde Trimmel, Sandro Oswald, Philipp Weihs
Dátum:2018
ISSN:1996-1073
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
solar energy
PV model
heat transfer
energy analisys
Megjelenés:Energies. - 11 : 5 (2018), p. 1114-1-18. -
További szerzők:Pintér Gábor (1983-) (közgazdász) Bai Attila (1967-) (agrár-közgazdász) Popp József (1955-) (közgazdász) Gabnai Zoltán (1988-) (gazdasági agrármérnök) Pályi Béla (1957-) (agrármérnök) Farkas István (1951-) (agrármérnök) Hegedűsné Baranyai Nóra (1978-) (egyetemi oktató) Gützer, Christian (agrármérnök) Trimmel, Heidelinde Oswald, Sandro Weihs, Philipp (agrármérnök)
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