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    Pool Boiling of Low-Global Warming Potential Replacements for R134a on a Reentrant Cavity Surface

    Source: Journal of Heat Transfer:;2018:;volume( 140 ):;issue: 012::page 121502
    Author:
    Kedzierski, M. A.
    ,
    Lin, L.
    ,
    Kang, D.
    DOI: 10.1115/1.4040783
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper quantifies the pool boiling performance of R134a, R1234yf, R513A, and R450A on a flattened, horizontal reentrant cavity surface. The study showed that the boiling performance of R134a on the Turbo-ESP exceeded that of the replacement refrigerants for heat fluxes greater than 20 kW m−2. On average, the heat flux for R1234yf and R513A was 16% and 19% less than that for R134a, respectively, for R134a heat fluxes between 20 kW m−2 and 110 kW m−2. The heat flux for R450A was on average 57% less than that of R134a for heat fluxes between 30 kW m−2 and 110 kW m−2. A model was developed to predict both single-component and multicomponent pool boiling of the test refrigerants on the Turbo-ESP surface. The model accounts for viscosity effects on bubble population and uses the Fritz equation to account for increased vapor production with increasing superheat. Both loss of available superheat and mass transfer resistance effects were modeled for the refrigerant mixtures. For most heat fluxes, the model predicted the measured superheat to within ±0.31 K.
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      Pool Boiling of Low-Global Warming Potential Replacements for R134a on a Reentrant Cavity Surface

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    contributor authorKedzierski, M. A.
    contributor authorLin, L.
    contributor authorKang, D.
    date accessioned2019-02-28T11:01:00Z
    date available2019-02-28T11:01:00Z
    date copyright8/24/2018 12:00:00 AM
    date issued2018
    identifier issn0022-1481
    identifier otherht_140_12_121502.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4251752
    description abstractThis paper quantifies the pool boiling performance of R134a, R1234yf, R513A, and R450A on a flattened, horizontal reentrant cavity surface. The study showed that the boiling performance of R134a on the Turbo-ESP exceeded that of the replacement refrigerants for heat fluxes greater than 20 kW m−2. On average, the heat flux for R1234yf and R513A was 16% and 19% less than that for R134a, respectively, for R134a heat fluxes between 20 kW m−2 and 110 kW m−2. The heat flux for R450A was on average 57% less than that of R134a for heat fluxes between 30 kW m−2 and 110 kW m−2. A model was developed to predict both single-component and multicomponent pool boiling of the test refrigerants on the Turbo-ESP surface. The model accounts for viscosity effects on bubble population and uses the Fritz equation to account for increased vapor production with increasing superheat. Both loss of available superheat and mass transfer resistance effects were modeled for the refrigerant mixtures. For most heat fluxes, the model predicted the measured superheat to within ±0.31 K.
    publisherThe American Society of Mechanical Engineers (ASME)
    titlePool Boiling of Low-Global Warming Potential Replacements for R134a on a Reentrant Cavity Surface
    typeJournal Paper
    journal volume140
    journal issue12
    journal titleJournal of Heat Transfer
    identifier doi10.1115/1.4040783
    journal fristpage121502
    journal lastpage121502-7
    treeJournal of Heat Transfer:;2018:;volume( 140 ):;issue: 012
    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