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Solar augmentation of conventional steam plants: From system studies to reality
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.ORCID iD: 0000-0001-9923-4189
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
2012 (English)In: World Renewable Energy Forum, WREF 2012, Including World Renewable Energy Congress XII and Colorado Renewable Energy Society (CRES) Annual Conference, American Solar Energy Society , 2012, 2682-2689 p.Conference paper, Published paper (Refereed)
Abstract [en]

Solar energy is often available in abundant quantities in the vicinity of conventional steam power plants close to large energy-consumption centers, where also the need for clean add-on power is substantial. Fossil-fuel based power units (coal fired steam plants or natural gas fired combined cycles) can be augmented with solar thermal power for feedwater preheating or parallel steam generation. Especially relevant is if the solar field in such developments is designed to deliver lower temperatures when compared to solar-only steam units, therefore decreasing the costs for the solar hardware and its maintenance. Employing solar energy either for upgrade of existing large-scale utility plants or in new constructions avails also of their intrinsically high efficiency of energy conversion and established infrastructure. The potential benefits of solar-fossil hybrid steam cycles have already been widely recognized and various feasibility studies carried out. A more systematic approach for proper evaluation of efficiency gain is necessary, for several representative types and sizes of conventional utility steam plants. More straightforward optimization studies are also required for finding the optimum penetration of solar power in the fossil-fired steam cycle, taking into account both technological and economy values. The present work attempts to provide an exhaustive review of previous efforts in this field, summarize the potential for practical deployment, and primarily build up the basis for a normalized systematic approach upon which various broad optimization studies can be performed with the ultimate goal of examining the technical and economical feasibility of any solar-fossil integrated concept and ultimately proposing a viable practical application for any specific location.

Place, publisher, year, edition, pages
American Solar Energy Society , 2012. 2682-2689 p.
Keyword [en]
Economical feasibility, Efficiency gain, Energy-consumption, Feasibility studies, Feedwater, Natural gas fired combined cycle, New constructions, Optimization studies, Potential benefits, Power units, Solar fields, Solar thermal power, Specific location, Steam cycles, Steam generation, Steam plant, System study
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-116798Scopus ID: 2-s2.0-84871536862ISBN: 978-162276092-3 (print)OAI: oai:DiVA.org:kth-116798DiVA: diva2:600916
Conference
World Renewable Energy Forum, WREF 2012, Including World Renewable Energy Congress XII and Colorado Renewable Energy Society (CRES) Annual Conference, 13 May 2012 through 17 May 2012, Denver, CO
Note

QC 20130128

Available from: 2013-01-28 Created: 2013-01-28 Last updated: 2013-10-16Bibliographically approved

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fulltext(119 kB)257 downloads
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