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    Aerothermodynamics and Exergy Analysis in Radial Turbine With Heat Transfer

    Source: Journal of Turbomachinery:;2018:;volume 140:;issue 009::page 91007
    Author:
    Lim, Shyang Maw
    ,
    Dahlkild, Anders
    ,
    Mihaescu, Mihai
    DOI: 10.1115/1.4040852
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This study was motivated by the difficulties to assess the aerothermodynamic effects of heat transfer on the performance of turbocharger turbine by only looking at the global performance parameters, and by the lack of efforts to quantify the physical mechanisms associated with heat transfer. In this study, we aimed to investigate the sensitivity of performance to heat loss, to quantify the aerothermodynamic mechanisms associated with heat transfer and to study the available energy utilization by a turbocharger turbine. Exergy analysis was performed based on the predicted three-dimensional flow field by detached eddy simulation (DES). Our study showed that at a specified mass flow rate, (1) pressure ratio drop is less sensitive to heat loss as compared to turbine power reduction, (2) turbine power drop due to heat loss is relatively insignificant as compared to the exergy lost via heat transfer and thermal irreversibilities, and (3) a single-stage turbine is not an effective machine to harvest all the available exhaust energy in the system.
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      Aerothermodynamics and Exergy Analysis in Radial Turbine With Heat Transfer

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4253331
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    contributor authorLim, Shyang Maw
    contributor authorDahlkild, Anders
    contributor authorMihaescu, Mihai
    date accessioned2019-02-28T11:09:44Z
    date available2019-02-28T11:09:44Z
    date copyright8/28/2018 12:00:00 AM
    date issued2018
    identifier issn0889-504X
    identifier otherturbo_140_09_091007.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4253331
    description abstractThis study was motivated by the difficulties to assess the aerothermodynamic effects of heat transfer on the performance of turbocharger turbine by only looking at the global performance parameters, and by the lack of efforts to quantify the physical mechanisms associated with heat transfer. In this study, we aimed to investigate the sensitivity of performance to heat loss, to quantify the aerothermodynamic mechanisms associated with heat transfer and to study the available energy utilization by a turbocharger turbine. Exergy analysis was performed based on the predicted three-dimensional flow field by detached eddy simulation (DES). Our study showed that at a specified mass flow rate, (1) pressure ratio drop is less sensitive to heat loss as compared to turbine power reduction, (2) turbine power drop due to heat loss is relatively insignificant as compared to the exergy lost via heat transfer and thermal irreversibilities, and (3) a single-stage turbine is not an effective machine to harvest all the available exhaust energy in the system.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleAerothermodynamics and Exergy Analysis in Radial Turbine With Heat Transfer
    typeJournal Paper
    journal volume140
    journal issue9
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.4040852
    journal fristpage91007
    journal lastpage091007-11
    treeJournal of Turbomachinery:;2018:;volume 140:;issue 009
    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
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