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Heat transfer enhancement in a pipe, using a flow inverter

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F09%3A00158946" target="_blank" >RIV/68407700:21220/09:00158946 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Heat transfer enhancement in a pipe, using a flow inverter

  • Original language description

    Flow inversion, transferring a liquid from the wall region towards the center of the pipe improves heat transfer in the laminar flow regime. Two original flow inverter designs were tested in a long pipe (3m in length) heated by condensing steam, using starch molasses as a working medium. Experiments carried out in the range of Reynolds number 4 - 60 and Graetz number 150 - 700 resulted in an increase of 20 - 35% in the heat transfer coefficient, accompanied by a 30-40% increase in the pressure drop. Theexperimental results confirm the numerical model prediction (within an extended Reynolds number range starting from Re=0.1). Thus an almost 40% increase in heat transfer can be expected at the optimal Graetz number in the range 50-100, using only one flow inverter located in the middle of a sufficiently long pipe.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BK - Liquid mechanics

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA101%2F06%2F0535" target="_blank" >GA101/06/0535: Thermal processing of biodegradable materials</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2009

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Heat Transfer Engineering

  • ISSN

    0145-7632

  • e-ISSN

  • Volume of the periodical

    30

  • Issue of the periodical within the volume

    12

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    9

  • Pages from-to

  • UT code for WoS article

    000265857600005

  • EID of the result in the Scopus database