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| 1 |
ID:
125700
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| Publication |
2013.
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| Summary/Abstract |
This paper proposes a first study in-depth of solar-fossil hybridization from a general perspective. It develops a set of useful parameters for analyzing and comparing hybrid plants, it studies the case of hybridizing Brayton cycles with current solar technologies and shows a tentative extrapolation of the results to integrated combined cycle systems (ISCSS). In particular, three points have been analyzed: the technical requirements for solar technologies to be hybridized with Brayton cycles, the temperatures and pressures at which hybridization would produce maximum power per unit of fossil fuel, and their mapping to current solar technologies and Brayton cycles. Major conclusions are that a hybrid plant works in optimum conditions which are not equal to those of the solar or power blocks considered independently, and that hybridizing at the Brayton cycle of a combined cycle could be energetically advantageous.
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| 2 |
ID:
117307
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| Publication |
2013.
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| Summary/Abstract |
Biomass Integrated Gasification Combined Cycles (BioIGCC) are a promising technology, alternative to fossil fuels for power generation. Significant reduction of CO2 emissions could be achieved, although important changes in the gas turbines and gasifiers design and further technological development would be necessary. The aim of this work is to study quantitatively the benefits of using BioIGCC plants instead of fossil fuel technologies, in terms of power supply and CO2 emission avoidance, including the study of pre-combustion CO2 capture. Different biomass substrates are analysed and compared and the required land use in each case and for different scenarios is also studied and quantified. The power generation and greenhouse gas emission avoidance potential of BioIGCC technology in Europe is also studied and the viability of this technology in different circumstances is discussed. In several cases BioIGCC plants are found to be viable from the point of view of availability of biomass resources and the cost of the produced kWh. In the whole EU-27 the potential hovers around 30 GW and a reduction of nearly 4% of the total EU emissions in 2009 in a conservative scenario, and up to 100 GW and 15% of emission reduction in a more optimistic one.
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