Wyniki wyszukiwania - BazTech

1

Policy of decarbonisation of the transport sector of the economy of Ukraine : problems and perspectives

Abuselidze George, Levchenko Nataliia, Shyshkanova Ganna, Platonov Oleg, Iushchenko Lyudmila

Ecological Chemistry and Engineering. S

|

2023

|

Vol. 30, nr 4

517--540

EN

Practically, the strategic guideline for a transformation of transport sector of the Ukraine’s economy is the reduction of the transport carbon footprint. The decarbonisation policy of the Ukrainian transport sector is characterised in the present paper. Moreover, inefficiency of the current policy is proved. The authors created the mathematical model of structural improvement in road transportations by redistribution of transportations volumes between the motor transport and the railway. Guided by the scenario approach, the three most probable scenarios for traffic optimisation are developed, such as pessimistic, basic, and optimistic. The carbon reduction percentage is computed in each of these scenarios. In addition, the priority vectors of the policy of the structural optimisation of the road transport by redistribution of traffic volumes between the motor transport and the railway are determined.

2

Assessment of the Impact of Digitalization on Greenhouse Gas Emissions on the Example of EU Member States

Kuzior Aleksandra, Vyshnevskyi Oleksandr, Trushkina Nataliia

Production Engineering Archives

|

2022

|

Vol. 28, Iss. 4

407--419

EN

Digitization and climate neutrality are among the development priorities of EU member states. This causes wide scientific and practical interest in the description of these processes, including their mutual influence. In this case, digitalization is a factor, and climate neutrality, largely characterized by green-house gas emissions, is the answer. Therefore, the purpose of the study is to assess the impact of digitalization on greenhouse gas emissions using the example of EU member states. The scientific novelty of the obtained results is the proposition of hypotheses, the proof of which will allow us to estimate the level of influence of the digitalization process on the volume of greenhouse gases per capita of the EU member states using economic and mathematical tools. It is justified that the direct impact of digitalization on the level of greenhouse gas emissions cannot be considered significant and statistically significant. The impact of digitalization on the processes of reducing greenhouse gas emissions with a delay of 1 to 4 years has not been identified. Considering the low degree of correlation-regression dependence between greenhouse gas emissions and the level of digitization, it can be assumed that either (1) other factors have a significant impact (list), or (2) the observation horizon is "captured" only by the part of the Kuznets curve, which corresponds to the descending part parabolas. Consequently, the conducted analysis shows that there are serious reasons to believe that digitalization is not the main (leading) factor in reducing greenhouse gas emissions. This necessitates further re-search with the inclusion of a wide range of variables (related to regulatory policy, tax policy, investment policy, the culture of consumption) in the model.

3

Emisje gazów cieplarnianych z transportu osobowego w Warszawie na podstawie danych z Barometru Warszawskiego

Szymalski Wojciech, Bukowicka Karolina

Prace Komisji Geografii Komunikacji PTG

|

2022

|

nr 25(3)

76--87

PL

W artykule przedstawiono metodę obliczenia emisji gazów cieplarnianych z transportu osobowego w Warszawie na podstawie wyników systematycznie prowadzonego badania ankietowego Barometr Warszawski. Uzyskane wyniki dla roku 2015 porównano do dwóch innych dostępnych oszacowań dla tego okresu. Sumaryczna emisja w przedstawionej metodzie jest bardzo zbliżona do wcześniejszych opracowań i wynosi niewiele ponad 1,4 mln kg CO2eq. Znaczne różnice ujawniają się jednak na poziomie rozbicia na środki transportu – transport indywidualny wydaje się być znacznie przeszacowany, zaś zbiorowy niedoszacowany. W artykule omówiono możliwe źródła różnic oraz przedstawiono rekomendacje mogące prowadzić do zwiększenia wiarygodności prezentowanej metody.

EN

This paper presents a method for calculating greenhouse gas emissions from passenger transport in Warsaw based on the results of the systematically conducted Warsaw Barometer survey. The results obtained for 2015 were compared to two other available estimates for this period. The total emissions in the presented method are very similar to previous studies and amount to just over 1.4 million kg CO2eq. However, significant differences emerge at the level of the breakdown by mode of transport – individual transport appears to be significantly overestimated, while collective transport appears to be underestimated. The article discusses the possible sources of the differences and makes recommendations that could lead to an increase in the reliability of the method presented.

4

Energy and environmental performance analysis of grid-connected photovoltaic systems under similar outdoor conditions in the Saharan environment

Deriche Mohammed Amine, Hafaifa Ahmed, Tahri Ali, Mohammedi Kamal, Tahri Fatima

Diagnostyka

|

2020

|

Vol. 21, No. 2

13--23

EN

The aim of this paper is to present a one-year performance analysis of four grid-connected PV systems installed at Ghardaia city in Algeria’s Sahara. The grid-connected PV systems are based on four different PV module technologies which are: monocrystalline silicon (m-Si), multi-crystalline silicon (mc-Si), cadmium telluride (Cd-Te) and amorphous (a-Si) PV module technologies. The PV systems based on the thin film technologies have their performance ratio better throughout the year when the performance ratio of the mc-Si technology is better in the winter season. The a-Si PV system has its performance ratio about 6.13 % more better than mc-Si and 8.90 % better than m-Si. The AC energy produced with the a-Si PV system is 13.32 % more than what the mc-Si system produces. It was found that the a-Si PV system performs better than the other technologies under the Saharan climate conditions of Ghardaia city. The energy payback time (EPBT) and greenhouse gases (GHG) emissions of the different PV systems were analyzed. The EPBT and GHG emissions per year, vary from a minimum value of 2.8 years to a maximum value of 5.73 years and from 13.24 tons to 32.03 tons of CO2/kWh for CdTe and m-Si respectively. The CdTe PV system performs better in terms of EPBT and GHG emissions compared to the other technologies (m-Si, mc-Si and a-Si) due to its low life cycle energy requirement.

5

Spalanie odpadów komunalnych największym źródłem emisji gazów cieplarnianych (głos w dyskusji o realizacji postanowień Konferencji Klimatycznej w Paryżu)

Klimek W.

Energetyka

|

2016

|

nr 9

504--505

PL

Omówiono negatywne aspekty i skutki budowy spalarni odpadów komunalnych. Przeciwstawiono dwa procesy: spalanie jako proces przebiegający szybko, a nawet gwałtownie i powolne procesy adsorpcyjne. Zwrócono także uwagę, że w wyniku spalania odpadów komunalnych otrzymuje się więcej odpadów niebezpiecznych niż było ich przed spaleniem.

EN

Discussed are negative aspects and effects of building a municipal waste incinerator. Compared are two types of processes - incineration as a very quick one (almost deflagration) and slow adsorption processes. Attention is also called to the fact that as a result of municipal wastes incineration we obtain greater amount of dangerous products than we had before the incineration process.