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    Numbering-Up of Microscale Devices for Megawatt-Scale Supercritical Carbon Dioxide Concentrating Solar Power Receivers

    Source: Journal of Solar Energy Engineering:;2016:;volume( 138 ):;issue: 006::page 61007
    Author:
    Zada, Kyle R.
    ,
    Hyder, Matthew B.
    ,
    Kevin Drost, M.
    ,
    Fronk, Brian M.
    DOI: 10.1115/1.4034516
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Concentrated solar power (CSP) plants have the potential to reduce the consumption of nonrenewable resources and greenhouse gas emissions in electricity production. In CSP systems, a field of heliostats focuses solar radiation on a central receiver, and energy is then transferred to a thermal power plant at high temperature. However, maximum receiver surface fluxes are low (30–100 W cm−2) with high thermal losses, which has contributed to the limited market penetration of CSP systems. Recently, small (∼4 cm2), laminated micro pin-fin devices have shown potential to achieve concentrated surface fluxes over 100 W cm−2 using supercritical CO2 as the working fluid. The present study explores the feasibility of using these microscale unit cells as building blocks for a megawatt-scale (250 MW thermal) open solar receiver through a numbering-up approach, where multiple microscale unit cell devices are connected in parallel. A multiscale model of the full-scale central receiver is developed. The model consists of interconnected unit cell and module level (i.e., multiple unit cells in parallel) submodels which predict local performance of the central receiver. Each full-scale receiver consists of 3000 micro pin-fin unit cells divided into 250 modules. The performance of three different full-scale receivers is simulated under representative operating conditions. The results show that the microscale unit cells have the potential to be numbered up to megawatt applications while providing high heat flux and thermal efficiency. At the design incident flux and surface emissivity, a global receiver efficiency of approximately 90% when heating sCO2 from 550 °C to 650 °C at an average incident flux of 110 W cm−2 can be achieved.
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      Numbering-Up of Microscale Devices for Megawatt-Scale Supercritical Carbon Dioxide Concentrating Solar Power Receivers

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4235670
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    contributor authorZada, Kyle R.
    contributor authorHyder, Matthew B.
    contributor authorKevin Drost, M.
    contributor authorFronk, Brian M.
    date accessioned2017-11-25T07:19:13Z
    date available2017-11-25T07:19:13Z
    date copyright2016/09/19
    date issued2016
    identifier issn0199-6231
    identifier othersol_138_06_061007.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4235670
    description abstractConcentrated solar power (CSP) plants have the potential to reduce the consumption of nonrenewable resources and greenhouse gas emissions in electricity production. In CSP systems, a field of heliostats focuses solar radiation on a central receiver, and energy is then transferred to a thermal power plant at high temperature. However, maximum receiver surface fluxes are low (30–100 W cm−2) with high thermal losses, which has contributed to the limited market penetration of CSP systems. Recently, small (∼4 cm2), laminated micro pin-fin devices have shown potential to achieve concentrated surface fluxes over 100 W cm−2 using supercritical CO2 as the working fluid. The present study explores the feasibility of using these microscale unit cells as building blocks for a megawatt-scale (250 MW thermal) open solar receiver through a numbering-up approach, where multiple microscale unit cell devices are connected in parallel. A multiscale model of the full-scale central receiver is developed. The model consists of interconnected unit cell and module level (i.e., multiple unit cells in parallel) submodels which predict local performance of the central receiver. Each full-scale receiver consists of 3000 micro pin-fin unit cells divided into 250 modules. The performance of three different full-scale receivers is simulated under representative operating conditions. The results show that the microscale unit cells have the potential to be numbered up to megawatt applications while providing high heat flux and thermal efficiency. At the design incident flux and surface emissivity, a global receiver efficiency of approximately 90% when heating sCO2 from 550 °C to 650 °C at an average incident flux of 110 W cm−2 can be achieved.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleNumbering-Up of Microscale Devices for Megawatt-Scale Supercritical Carbon Dioxide Concentrating Solar Power Receivers
    typeJournal Paper
    journal volume138
    journal issue6
    journal titleJournal of Solar Energy Engineering
    identifier doi10.1115/1.4034516
    journal fristpage61007
    journal lastpage061007-9
    treeJournal of Solar Energy Engineering:;2016:;volume( 138 ):;issue: 006
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian