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Wyświetlanie 1-5 z 5
Tytuł:
Green energy transformation in Poland
Autorzy:
Kiciński, Jan
Powiązania:
https://bibliotekanauki.pl/articles/2173583.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environmentally friendly power engineering
energy transformation
low-emission technologies
civic power engineering
energetyka przyjazna środowisku
transformacja energii
technologie niskoemisyjne
energetyka obywatelska
Opis:
Is the world’s power engineering at a crossroads? Will ongoing climate changes and rise of new technologies such as the Internet of Things (IoT), Smart City or e-mobility give us a completely different perspective on the world’s future energy? What are our actual visions and development forecasts in this matter? Who is right concerning this matter, large energy companies and some politicians, environmentalists, climate researchers and all kinds of visionaries? Is transformation based on solar energy and hydrogen a holy grail for the energy sector? The author of this article tries to find answers to these and many other questions. Today we can already accept as a proven thesis that rapid and dangerous climate changes for our civilisation can also be attributed to high carbon and low-efficient power engineering. Power engineering and climate neutrality are no longer just problems for politicians, companies, and scientists, but have become a challenge for our civilisation. If we are to save the Earth, our civilisation has to change its mentality and develop ideas that will not prioritise economic growth and high consumption but sustainable growth in harmony with nature. For this to happen, the way people think about energy and global transformation must also change. The foregoing general remarks, but also the fact that a gradual transition from traditional large-scale fossil fuel-based energy generation to distributed energy generation based on renewable resources is inevitable, constitute the main message of this article. The article also aims to discuss the role of the Institute of Fluid-Flow Machinery of the Polish Academy of Sciences (IMP PAN) in Gdańsk in the process of energy transformation in our country. The institute, as the coordinating entity of over a dozen of high-budgeted national and European projects in the field of environmentally-friendly power engineering, has contributed to some extent to the creation of conditions required for the development of prosumer power engineering (or more broadly: civic power engineering) in our country.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; art. no. e136213
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Green energy transformation in Poland
Autorzy:
Kiciński, Jan
Powiązania:
https://bibliotekanauki.pl/articles/2090706.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environmentally friendly power engineering
energy transformation
low-emission technologies
civic power engineering
energetyka przyjazna środowisku
transformacja energii
technologie niskoemisyjne
energetyka obywatelska
Opis:
Is the world’s power engineering at a crossroads? Will ongoing climate changes and rise of new technologies such as the Internet of Things (IoT), Smart City or e-mobility give us a completely different perspective on the world’s future energy? What are our actual visions and development forecasts in this matter? Who is right concerning this matter, large energy companies and some politicians, environmentalists, climate researchers and all kinds of visionaries? Is transformation based on solar energy and hydrogen a holy grail for the energy sector? The author of this article tries to find answers to these and many other questions. Today we can already accept as a proven thesis that rapid and dangerous climate changes for our civilisation can also be attributed to high carbon and low-efficient power engineering. Power engineering and climate neutrality are no longer just problems for politicians, companies, and scientists, but have become a challenge for our civilisation. If we are to save the Earth, our civilisation has to change its mentality and develop ideas that will not prioritise economic growth and high consumption but sustainable growth in harmony with nature. For this to happen, the way people think about energy and global transformation must also change. The foregoing general remarks, but also the fact that a gradual transition from traditional large-scale fossil fuel-based energy generation to distributed energy generation based on renewable resources is inevitable, constitute the main message of this article. The article also aims to discuss the role of the Institute of Fluid-Flow Machinery of the Polish Academy of Sciences (IMP PAN) in Gdańsk in the process of energy transformation in our country. The institute, as the coordinating entity of over a dozen of high-budgeted national and European projects in the field of environmentally-friendly power engineering, has contributed to some extent to the creation of conditions required for the development of prosumer power engineering (or more broadly: civic power engineering) in our country.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; e136213, 1--15
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The properties of mass concrete with CFBC fly ash-slag binder
Właściwości betonu masywnego ze spoiwem żużlowo-popiołowym
Autorzy:
Machowska, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/1849778.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
CFBC
spoiwo żużlowo-popiołowe
spoiwo niskoemisyjne
beton masywny
gospodarka obiegu zamkniętego
właściwości
fly ash-slag binder
low-emission binder
mass concrete
circular economy
properties
Opis:
The manuscript presents the research results concerning the properties of concrete with non-clinker, low-emission binder composed of by-products from metallurgy and power industry: ground granulated blast furnace slag and fly ash from circular fluidized-bed combustion of brown coal. The binder was added in five proportions. The consistency and air content of the concrete mix were measured, as well as the temperature of the concrete mix during hardening. The compressive strength of the hardened concrete was investigated in three periods of samples’ curing: after 28, 90 and 360 days. Also the penetration depth of water under pressure and freeze and thaw resistance of concrete samples were investigated. The results confirm the possibility of application of slag-CFBC fly ash binder for mass concrete due to low temperature during hardening. The obtained results of the compressive strength and penetration depth of water under pressure reveal the influence of changing the proportion of the binder ingredients, as well as the sample damage during testing the freeze/thaw resistance. The CFBC fly ash-slag binder can be used for mass concrete, hydrotechnical concretes in particular, but excluding the zones exposed to frost.
W artykule przedstawiono wyniki badań betonu wykonanego z udziałem niskoemisyjnego, bezklinkierowego spoiwa, powstałego przez zmieszanie mielonego granulowanego żużla wielkopiecowego i popiołu lotnego z fluidalnego spalania węgla brunatnego (w pięciu proporcjach dozowania składników spoiwa, przy stałym w/s=0,5). W celu ustalenia wpływu spoiwa żużlowo-popiołowego na właściwości mieszanki betonowej wykonano badania konsystencji mieszanki metodami stożka opadowego wg PN-EN 12350-2 [12] i stolika rozpływowego wg PN-EN 12350-5 [13], badania zawartości powietrza i zmian temperatury mieszanki podczas twardnienia. Wykonanie mieszanki betonowej bez dodatku domieszki upłynniającej jest niezwykle trudne ze względu na wysoką wodożądności i rozwiniętą powierzchnię właściwą ziaren zastosowanego popiołu lotnego. Dodatek domieszki umożliwił uzyskanie konsystencji S4 wg [12] i F3÷F5 wg [13]. Zawartość powietrza w mieszance wyniosła 0,9÷1,2%. Zmierzona temperatura twardnienia betonu wykonanego według pięciu receptur wskazuje na możliwość wykorzystania do wykonania betonu masywnego (maksymalna temperatura twardnienia 26°C).
Źródło:
Archives of Civil Engineering; 2020, 66, 4; 471-484
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acoustic emission analysis of the plastic deformation stages of degraded low-carbon steel after long-term operation in the oil refining and petrochemical processing
Autorzy:
Lyasota, I.
Sarniak, Ł.
Kustra, P.
Powiązania:
https://bibliotekanauki.pl/articles/351029.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
monitoring
low carbon steel
plastic deformation
acoustic emission
refinery industry
Opis:
This paper presents results obtained from a laboratory investigation conducted on material from a pressure vessel after longterm operation in the oil refinery industry. The tested material contained structural defects which arose from improper heat treatment during steel plate manufacturing. Complex tensile tests with acoustic emission signal recording were conducted on both notched and unnotched specimens. The detailed analysis of different acoustic emission criteria allowed as to detect each stage of plastic deformation and microstructural damage processes after a long-term operation, and unused carbon steels during quasi-static axial tension testing. The acoustic emission activity, generated in the typical stages of material deformation, was correlated by microscopy observations during the tensile test. The results are to be used as the basis for new algorithms for the assessment of the structural condition of in-service pressure equipment.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 1; 143-151
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of energy and emission indicators of a piston engine supplied by a mixture of biogas
Autorzy:
Stępniak, D.
Surwiło, J.
Lampart, P.
Szymaniak, M.
Powiązania:
https://bibliotekanauki.pl/articles/175362.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
piston combustion engine
low caloric fuels
biogas
CO
CO₂
NOx emission
Opis:
The paper presents the methodology and results of research focused on experimental investigation of combustion of biogas fuels in a combustion piston engine. The study highlights the variability of exhaust gases parameters produced by the engine running in an idle mode and in a generation mode. The experimental analysis includes research about variability of temperature in the cylinders, depending on the composition of fuel used to supply the engine. The qualitative and quantitative analysis of exhaust gases extends on biogas substitutes with different proportions of CH₄ and CO₂. Characteristics of a piston combustion engine were created, including CO, CO₂, NOx emission indicators, for a range of engine load and fuel composition.
Źródło:
Transactions of the Institute of Fluid-Flow Machinery; 2016, 134; 109-120
0079-3205
Pojawia się w:
Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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