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Wyświetlanie 1-2 z 2
Tytuł:
Thermodynamical motivation of the Polish energy policy
Autorzy:
Ziębik, A.
Powiązania:
https://bibliotekanauki.pl/articles/240888.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
efektywność energetyczna
egzergia
kogeneracja
koszt termoekologiczny
odzysk ciepła
polityka energetyczna
straty egzergii
cogeneration
energy effectiveness
energy policy
exergy
exergy losses
thermoecological cost
Waste-heat recovery
Opis:
Basing on the first and second law of thermodynamics the fundamental trends in the Polish energy policy are analysed, including the aspects of environmental protection. The thermodynamical improvement of real processes (reduction of exergy losses) is the main way leading to an improvement of the effectivity of energy consumption. If the exergy loss is economically not justified, we have to do with an error from the viewpoint of the second law analysis. The paper contains a thermodynamical analysis of the ratio of final and primary energy, as well as the analysis of the thermo-ecological cost and index of sustainable development concerning primary energy. Analyses of thermo-ecological costs concerning electricity and centralized heat production have been also carried out. The effect of increasing the share of high-efficiency cogeneration has been analyzed, too. Attention has been paid to an improved efficiency of the transmission and distribution of electricity, which is of special importance from the viewpoint of the second law analysis. The improvement of the energy effectivity in industry was analyzed on the example of physical recuperation, being of special importance from the point of view of exergy analysis.
Źródło:
Archives of Thermodynamics; 2012, 33, 4; 3-21
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System approach to the analysis of an integrated oxy-fuel combustion power plant
Autorzy:
Ziębik, A.
Gładysz, P.
Powiązania:
https://bibliotekanauki.pl/articles/240507.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
system approach
input-output analysis
oxy-fuel combustion
cumulative energy
exergy consumption
system exergy losses
thermoecological cost
zarządzanie jakością
analiza wejścia-wyjścia
spalanie w tlenie
energia skumulowana
zużycie egzergii
straty egzergii
koszt termoekologiczny
Opis:
Oxy-fuel combustion (OFC) belongs to one of the three commonly known clean coal technologies for power generation sector and other industry sectors responsible for CO2 emissions (e.g., steel or cement production). The OFC capture technology is based on using high-purity oxygen in the combustion process instead of atmospheric air. Therefore flue gases have a high concentration of CO2 - Due to the limited adiabatic temperature of combustion some part of CO2 must be recycled to the boiler in order to maintain a proper flame temperature. An integrated oxy-fuel combustion power plant constitutes a system consisting of the following technological modules: boiler, steam cycle, air separation unit, cooling water and water treatment system, flue gas quality control system and CO2 processing unit. Due to the interconnections between technological modules, energy, exergy and ecological analyses require a system approach. The paper present the system approach based on the 'input-output' method to the analysis of the: direct energy and material consumption, cumulative energy and exergy consumption, system (local and cumulative) exergy losses, and thermoecological cost. Other measures like cumulative degree of perfection or index of sustainable development are also proposed. The paper presents a complex example of the system analysis (from direct energy consumption to thermoecological cost) of an advanced integrated OFC power plant.
Źródło:
Archives of Thermodynamics; 2014, 35, 3; 39-57
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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