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    Economic Potential of Solar Thermal Power Plants With Direct Steam Generation Compared With HTF Plants

    Source: Journal of Solar Energy Engineering:;2010:;volume( 132 ):;issue: 004::page 41001
    Author:
    Jan Fabian Feldhoff
    ,
    Daniel Benitez
    ,
    Markus Eck
    ,
    Klaus-Jürgen Riffelmann
    DOI: 10.1115/1.4001672
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The direct steam generation (DSG) in parabolic trough collectors is a promising option to improve the mature parabolic trough solar thermal power plant technology of the solar energy generating systems (SEGS) in California. According to previous studies [, 1998, “Revised LEC Projections and Discussion of Different DSG Benefits,” Technical Report No. DISS-SC-QA-02, Almeria, Spain; , , 2002, “Advances in Parabolic Trough Solar Power Technology,” ASME J. Sol. Energy Eng., 124(2), pp. 109–125; , 2002, “DISS Phase II Final Report,” Technical Report EU Contract No. JOR3-CT98-0277, Almeria, Spain], the cost reduction in the DSG process compared with the SEGS technology is expected to be 8–25%. All these studies were more or less preliminary since they lacked detailed information on the design of collector fields, absorber tubes required for steam temperatures higher than 400°C, and power blocks adapted to the specific needs of the direct steam generation. Power blocks and collector fields were designed for four different capacities (5 MWel, 10 MWel, 50 MWel, and 100 MWel) and different live steam parameters. The live steam temperature was varied between saturation temperature and 500°C and live steam pressures of 40 bars, 64 bars, and 100 bars were investigated. To assess the different cases, detailed yield analyses of the overall system were performed using hourly data for the direct normal irradiation and the ambient temperature for typical years. Based on these results, the levelized costs of electricity were determined for all cases and compared with a reference system using synthetic oil as heat transfer fluid. This paper focuses on two main project findings. First, the 50 MWel DSG system parameter comparisons are presented. Second, the detailed comparison between a DSG and a SEGS-like 100 MWel system is given. The main result of the investigation is that the benefit of the DSG process depends on the project site and can reach an 11% reduction in the levelized electricity cost.
    keyword(s): Temperature , Design , Solar energy , Industrial plants , Steam , Solar thermal power AND Pressure ,
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      Economic Potential of Solar Thermal Power Plants With Direct Steam Generation Compared With HTF Plants

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    http://yetl.yabesh.ir/yetl1/handle/yetl/144736
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    contributor authorJan Fabian Feldhoff
    contributor authorDaniel Benitez
    contributor authorMarkus Eck
    contributor authorKlaus-Jürgen Riffelmann
    date accessioned2017-05-09T00:40:40Z
    date available2017-05-09T00:40:40Z
    date copyrightNovember, 2010
    date issued2010
    identifier issn0199-6231
    identifier otherJSEEDO-28434#041001_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/144736
    description abstractThe direct steam generation (DSG) in parabolic trough collectors is a promising option to improve the mature parabolic trough solar thermal power plant technology of the solar energy generating systems (SEGS) in California. According to previous studies [, 1998, “Revised LEC Projections and Discussion of Different DSG Benefits,” Technical Report No. DISS-SC-QA-02, Almeria, Spain; , , 2002, “Advances in Parabolic Trough Solar Power Technology,” ASME J. Sol. Energy Eng., 124(2), pp. 109–125; , 2002, “DISS Phase II Final Report,” Technical Report EU Contract No. JOR3-CT98-0277, Almeria, Spain], the cost reduction in the DSG process compared with the SEGS technology is expected to be 8–25%. All these studies were more or less preliminary since they lacked detailed information on the design of collector fields, absorber tubes required for steam temperatures higher than 400°C, and power blocks adapted to the specific needs of the direct steam generation. Power blocks and collector fields were designed for four different capacities (5 MWel, 10 MWel, 50 MWel, and 100 MWel) and different live steam parameters. The live steam temperature was varied between saturation temperature and 500°C and live steam pressures of 40 bars, 64 bars, and 100 bars were investigated. To assess the different cases, detailed yield analyses of the overall system were performed using hourly data for the direct normal irradiation and the ambient temperature for typical years. Based on these results, the levelized costs of electricity were determined for all cases and compared with a reference system using synthetic oil as heat transfer fluid. This paper focuses on two main project findings. First, the 50 MWel DSG system parameter comparisons are presented. Second, the detailed comparison between a DSG and a SEGS-like 100 MWel system is given. The main result of the investigation is that the benefit of the DSG process depends on the project site and can reach an 11% reduction in the levelized electricity cost.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleEconomic Potential of Solar Thermal Power Plants With Direct Steam Generation Compared With HTF Plants
    typeJournal Paper
    journal volume132
    journal issue4
    journal titleJournal of Solar Energy Engineering
    identifier doi10.1115/1.4001672
    journal fristpage41001
    identifier eissn1528-8986
    keywordsTemperature
    keywordsDesign
    keywordsSolar energy
    keywordsIndustrial plants
    keywordsSteam
    keywordsSolar thermal power AND Pressure
    treeJournal of Solar Energy Engineering:;2010:;volume( 132 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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