Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 6
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

The electricity production by combustion of organic fuels, especially coal, increases the atmospheric CO2 content, which contributes to global warming. The greenhouse gas emissions by the power production industry may be reduced by the application of CO2 capture and storage systems, but it remarkably decreases the thermal power plant (TPP) efficiency because of the considerable increase of the auxiliary electricity requirements. This paper describes the thermodynamic analysis of a combined cycle TPP with coal gasification and preliminary carbon dioxide capture from the syngas. Utilization of the heat produced in the fuel preparation increases the TPP net efficiency from 42.3% to 47.2%. Moreover, the analysis included the combined cycle power plant with coal gasification and the CO2 capture from the heat recovery steam generator exhaust gas, and the oxy-fuel combustion power cycle with coal gasification. The coal-fired combined cycle power plant efficiency with the preliminary CO2 capture from syngas is 0.6% higher than that of the CO2 capture after combustion and 9.9% higher than that with the oxy-fuel combustion and further CO2 capture. The specific CO2 emissions are equal to 103 g/kWh for the case of CO2 capture from syngas, 90 g/kWh for the case of CO2 capture from the exhaust gas and 9 g/kWh for the case of oxy-fuel combustion.
Go to article

Bibliography

[1] Friedlingstein P., O’Sullivan M., Jones M.W., Andrew R.M., Hauck J., Olsen A., Zaehle S.: Global carbon budget 2020. Earth Syst. Sci. Data 12(2020), 4, 3269–3340.
[2] Peters G.P., Andrew R.M., Canadell J.G., Friedlingstein P., Jackson R.B., Korsbakken J.I., Peregon A.: Carbon dioxide emissions continue to grow amidst slowly emerging climate policies. Nat. Clim. Change 10(2020), 1, 3–6.
[3] Le Quéré C., Korsbakken J.I., Wilson C., Tosun J., Andrew R., Andres R.J., van Vuuren D.P.: Drivers of declining CO2 emissions in 18 developed economies. Nat. Clim. Change 9(2019), 3, 213–217.
[4] Bui M., Adjiman C.S., Bardow A., Anthony E.J., Boston A., Brown S., Mac Dowell N.: Carbon capture and storage (CCS): The way forward. Energ. Environ. Sci. 11(2018), 5, 1062–1176.
[5] Tong D., Zhang Q., Zheng Y., Caldeira K., Shearer C., Hong C., Qin Y., Davis S.J.: Committed emissions from existing energy infrastructure jeopardize 1.5˚C climate target. Nature 572(2019), 7769, 373–377.
[6] Nejat P., Jomehzadeh F., Taheri M.M., Gohari M., Majid M.Z.A.: A global review of energy consumption, CO2 emissions and policy in the residential sector (with an overview of the top ten CO2 emitting countries). Renew. Sust. Energ. Rev. 43(2015), 843–862.
[7] Vega F., Baena-Moreno F.M., Fernández L.M.G., Portillo E., Navarrete B., Zhang Z.: Current status of CO2 chemical absorption research applied to CCS: Towards full deployment at industrial scale. Appl. Energ. 260(2020), 114313.
[8] Fan J.L., Xu M., Li F., Yang L., Zhang X.: Carbon capture and storage (CCS) retrofit potential of coal-fired power plants in China: The technology lock-in and cost optimization perspective. Appl. Energ. 229(2018), 326–334. [9] Porter R.T., Fairweather M., Kolster C., Mac Dowell N., Shah N.,Woolley R.M.: Cost and performance of some carbon capture technology options for producing different quality CO2 product streams. Int. J. Greenh. Gas Con. 57(2017), 185–195.
[10] Erlach B., Schmidt M., Tsatsaronis G.: Comparison of carbon capture IGCC with pre-combustion decarbonisation and with chemical-looping combustion. Energy 36(2011), 6, 3804–3815.
[11] Atsonios K., Koumanakos A., Panopoulos K.D., Doukelis A., Kakaras E.: Techno-economic comparison of CO2 capture technologies employed with natural gas derived GTCC. In: Proc. ASME Turbo Expo: Turbine Tech. Conf. Exp, San Antonio, June 3–7, 2013, GT2013-95117, V002T07A018.
[12] Kanniche M., Gros-Bonnivard R., Jaud P., Valle-Marcos J., Amann J.M., Bouallou C.: Pre-combustion, post-combustion and oxy-combustion in thermal power plant for CO2 capture. Appl. Therm. Eng. 30(2010), 1, 53–62.
[13] Merkel T.C., Lin H., Wei X., Baker R.: Power plant post-combustion carbon dioxide capture: An opportunity for membranes. J. Membrane Sci. 359(2010), 126– 139.
[14] Merkel T.C., Zhou M., Baker R.W.: Carbon dioxide capture with membranes at an IGCC power plant. J. Membrane Sci. 389(2012), 441–450.
[15] Merkel T.C., Wei X., He Z., White L.S., Wijmans J.G., Baker R.W.: Selective exhaust gas recycle with membranes for CO2 capture from natural gas combined cycle power plants. Ind. Eng. Chem. Res. 52(2013), 3, 1150–1159.
[16] Song C., Liu Q., Deng S., Li H., Kitamura Y.: Cryogenic-based CO2 capture technologies: state-of-the-art developments and current challenges. Renew. Sust. Energ. Rev. 101(2019), 265–278.
[17] Chiesa P., Campanari S., Manzolini G.: CO2 cryogenic separation from combined cycles integrated with molten carbonate fuel cells. Int. J. Hydrogen Energ. 36(2011), 16, 10355–10365.
[18] Komarov I., Kharlamova D., Makhmutov B., Shabalova S., Kaplanovich I.: Natural gas-oxygen combustion in a super-critical carbon dioxide gas turbine combustor. E3S Web Conf. 178(2020), 01027.
[19] Allam, R., Martin, S., Forrest, B., Fetvedt, J., Lu, X., Freed, D., Brown Jr. G.W., Sasaki T., Itoh M., Manning J.: Demonstration of the Allam cycle: An update on the development status of a high efficiency supercritical carbon dioxide power process employing full carbon capture. Enrgy Proced. 114(2017), 5948–5966.
[20] Rogalev A., Kindra V., Osipov S., Rogalev N.: Thermodynamic analysis of the net power oxy-combustion cycle. In: Proc. 13th Eur. Conf. on Turbomachinery Fluid Dynamics and Thermodynamics, ETC13, Lausanne, April 8-12, 2018, ETC2019-030.
[21] Mukherjee S., Kumar P., Yang A., Fennell P.: Energy and exergy analysis of chemical looping combustion technology and comparison with pre-combustion and oxy-fuel combustion technologies for CO2 capture. J. Environ. Chem. Eng. 3(2015), 3, 2104–2114.
[22] Li J., Zhang H., Gao Z., Fu J., Ao W., Dai J.: CO2 capture with chemical looping combustion of gaseous fuels: An overview. Energ. Fuels 31(2017), 4, 3475–3524.
[23] Lyngfelt A., Linderholm C.: Chemical-looping combustion of solid fuels–status and recent progress. Enrgy Proced. 114(2017), 371–386.
[24] Naqvi R., Bolland O.: Multi-stage chemical looping combustion (CLC) for combined cycles with CO2 capture. Int. J. Greenh. Gas Con. 1(2007), 1, 19–30.
[25] Li K., Leigh W., Feron P., Yu H., Tade M.: Systematic study of aqueous monoethanolamine (MEA)-based CO2 capture process: Techno-economic assessment of the MEA process and its improvements. Appl. Energ. 165(2016), 648–659.
[26] Duan L., Zhao M., Yang Y.: Integration and optimization study on the coal-fired power plant with CO2 capture using MEA. Energy 45(2012), 1, 107–116.
[27] Ma Y., Gao J., Wang Y., Hu J., Cui P.: Ionic liquid-based CO2 capture in power plants for low carbon emissions. Int. J. Greenh. Gas Con. 75(2018), 134–139.
[28] Oh S.Y., Binns M., Cho H., Kim J.K.: Energy minimization of MEA-based CO2 capture process. Appl. Energ. 169(2016), 353–362.
[29] Ho M.T., Allinson G.W., Wiley D.E.: Comparison of MEA capture cost for low CO2 emissions sources in Australia. Int. J. Greenh. Gas Con. 5(2011), 1, 49–60.
[30] Rogalev A., Kindra V., Osipov S.: Modeling methods for oxy-fuel combustion cycles with multicomponent working fluid. AIP Conf. Proc. 2047(2018), 1, 020020.
[31] Kunze C., Spliethoff H.: Assessment of oxy-fuel, pre-and post-combustion-based carbon capture for future IGCC plants. Appl. Energ. 94(2012), 109–116.
[32] Scaccabarozzi R., Gatti M., Martelli E.: Thermodynamic analysis and numerical optimization of the NET Power oxy-combustion cycle. Appl. Energ. 178(2016), 505–526.
[33] Rogalev A.N., Kindra V.O., Rogalev N.D., Sokolov V.P., Milukov I.A.: Methods for efficiency improvement of the semi-closed oxy-fuel combustion combined cycle. J. Phys. Conf. Ser. 1111(2018), 1, 012003.
[34] Cormos C.-Cr.: Integrated assessment of IGCC power generation technology with carbon capture and storage (CCS). Energy 42(2012), 434–445.
[35] Ito E., Okada I., Tsukagoshi K., Muyama A., Masada J.: Development of key technologies for the next generation 1700C-class gas turbine. In: Proc. ASME Turbo Expo 2009: Power for Land, Sea, and Air, Orlando, June 8–12, 2009. 919–929.
[36] Ebrahimi A., Meratizaman M., Reyhani H.A., Pourali O., Amidpour M.: Energetic, exergetic and economic assessment of oxygen production from two columns cryogenic air separation unit. Energy 90(2015), 1298–1316. [37] Uddin F., Taqvi S.A., Memon I.: Process simulation and sensitivity analysis of indirect coal gasification using Aspen Plus model. J. Eng. Appl. Sci. 11(2016), 17, 10546–10552.
[38] Kapetaki Z., Brandani P., Brandani S., Ahn H.: Process simulation of a dualstage Selexol process for 95% carbon capture efficiency at an integrated gasification combined cycle power plant. Int. J. Greenh. Gas Con. 39(2015), 17–26.
[39] Kotowicz J., Brzeczek M.: Comprehensive multivariable analysis of the possibility of an increase in the electrical efficiency of a modern combined cycle power plant with and without a CO2 capture and compression installations study. Energy 175 (2019), 1100–1120.
[40] Kvamsdal H.M., Jordal K., Bolland O.: A quantitative comparison of gas turbine cycles with CO2 capture. Energy 175(2007), 10–24.
[41] Gazzani M., Macchi E., Manzolini G.: CO2 capture in integrated gasification combined cycle with SEWGS – Part A: Thermodynamic performances. Fuel 105(2013), 206–219.
Go to article

Authors and Affiliations

Vladimir Olegovich Kindra
1
Igor Alexandrovich Milukov
1
Igor Vladimirovich Shevchenko
1
Sofia Igorevna Shabalova
1
Dmitriy Sergeevich Kovalev
1

  1. National Research University “Moscow Power Engineering Institute”, Krasnokazarmennaya 14, Moscow, 111250 Russia
Download PDF Download RIS Download Bibtex

Abstract

Folklore plays a crucial role in the preservation of the local heritage, and it can provide valuable information regarding cultural and religious norms, language, and environment of that people. The folktale is one of the many forms of folklore and it represents the product of the individual traditional heritage that originates from a population’s collective cultural imagination and background. In the Arabian Gulf societies, the oral tradition of storytelling has been prominent for a very long time and it has somehow been preserved until fairly recent times. The folktale belongs to the Emirati intangible cultural heritage, and it constitutes a deeply rooted element related to Bedouin tribal clans and to the desertic and maritime environments which characterised the territory. The United Arab Emirates is very attentive to the conservation of their heritage, both at national and international levels. This study provides a socio-cultural and linguistic analysis of the Emirati folktale, based on a sample of three stories from Al-Ain, written in Emirati Arabic, which share a common feature: the wickedness of wives.
Go to article

Authors and Affiliations

Najla Kalach
1
ORCID: ORCID

  1. University of International Studies of Rome, Italy
Download PDF Download RIS Download Bibtex

Abstract

The starting point of the study on the problems, dilemmas and hopes for effective implementation of revitalization projects in Polish cities was the conviction that revitalization is one of the processes affecting the development and changes in the spatial and functional fabric of cities. Revitalization is defined as a deliberate and purposeful process, the effect of which is to restore life in the dysfunctional and degraded parts of cities. Taking up such a topic required an answer to the question about the nature of revitalization and its aspects. The focus of the study was on the problems of revitalization that stem from the legal and socio-economic situation and the dilemmas faced by local government authorities of Polish cities. The introduction to these considerations is the brief outline of the revitalization of Polish cities in the period after World War II, while the conclusion deals with the fears and hopes related to revitalization activities that are presently initiated. The discussion takes into account the existing, critically assessed, legal regulations on revitalization.

Go to article

Authors and Affiliations

Jerzy J. Parysek
Download PDF Download RIS Download Bibtex

Abstract

Underground spaces having features such as stability, resistance, and being undetected can play a key role in reducing vulnerability by relocating infrastructures and manpower. In recent years, the competitive business environment and limited resources have mostly focused on the importance of project management in order to achieve its objectives. In this research, in order to find the best balance among cost, time, and quality related to construction projects using reinforced concrete in underground structures, a multi-objective mathematical model is proposed. Several executive approaches have been considered for project activities and these approaches are analyzed via several factors. It is assumed that cost, time, and quality of activities in every defined approach can vary between compact and normal values, and the goal is to find the best execution for activities, achieving minimum cost and the maximum quality for the project. To solve the proposed multi-objective model, the genetic algorithm NSGA-II is used.

Go to article

Authors and Affiliations

S.A. Hosseini
A. Akbarpour
H. Ahmadi
B. Aminnejad
Download PDF Download RIS Download Bibtex

Abstract

For at least two centuries Europeans, in particular the political elites of Europe, have assumed that modernity and the rational character of the civilization require a marginalization of religion. A separation and juxtaposition of reason and faith, sci-ence and religion or the state and the church are regarded as almost obvious. Gradual-ly the legitimate principle of religious freedom has started to be understood as a pos-tulate of “purification” of public life from any references to sacrum and religion itself as an area of irrational and random opinions has been located in the private sphere. This has led to the conviction that religion (Christianity) does not have or should not have any significance in social life, the public order, the legal system or the widely understood political sphere . The central issue of the paper, which is the possibility of reversing the direction taken by European civilization, is conditioned not only by making the secularist policy of the West more friendly towards Christian tradition (for instance by grounding it on natural law) but still more by the revitalization of religious life of the Churches and Christian communities.

Go to article

Authors and Affiliations

Ks. Jan Perszon
Download PDF Download RIS Download Bibtex

Abstract

The eternal traveller, who was to become the founder of the Gdańsk Library, traversed Moravia several times and sojourned there at least twice. During his stay of 1562–1564, which was probably the longest, died his little dog named Viola, a reminiscency of his Apulian fatherland taken along in exile. Bonifacio wrote elegies after that death, in which he utters many names of persons of similar Weltanschauung he knew. Together with him mourned his favourite servant Julia: she was to be unable to stand the consequent void of the death and abandoned her master (and lover). So Bonifacio was hit by a double loss. He tried to overcome the depression in which he stayed: He succeeded with the animal, the dogs, who were to accompany him as far as to Gdańsk, but he failed with the women. He was to go his way without company, dedicating his leisure to the reading of his books (he possessed over 1000 volumes), but merging into depression. Blinded in a shipwreck, he bequeathed his books and the manuscript with the verses on Viola in 1591 to the city of Gdańsk; he died six years later.
Go to article

Authors and Affiliations

Manfred Welti

This page uses 'cookies'. Learn more