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Determination of convective and radiative heat transfer coefficients using 34-zones thermal manikin: Uncertainty and reproducibility evaluation

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F16%3APU118848" target="_blank" >RIV/00216305:26210/16:PU118848 - isvavai.cz</a>

  • Result on the web

    <a href="http://www.journals.elsevier.com/experimental-thermal-and-fluid-science" target="_blank" >http://www.journals.elsevier.com/experimental-thermal-and-fluid-science</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.expthermflusci.2016.04.015" target="_blank" >10.1016/j.expthermflusci.2016.04.015</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Determination of convective and radiative heat transfer coefficients using 34-zones thermal manikin: Uncertainty and reproducibility evaluation

  • Original language description

    A lot of research has been done in order to investigate heat transfer coefficients of human body in various postures, wind speeds and wind directions (e.g., [1-15]). However, there has not been any reference to measurement reproducibility and measurement confidence intervals. The purpose of this study was to determine heat transfer coefficients of a thermal manikin experimentally, while focusing on the repeated determination of the coefficients and statistic data evaluation. The manikin imitates human metabolic heat production; it measures a combined dry heat flux from its surface and also its surface temperature. The major part of the radiative heat flux was eliminated by low-emissivity coating applied to the surface of the nude manikin. The tests were performed across 34 zones that correspond to parts of a human body. Both standing and seated postures were investigated. The tests were conducted at constant air temperature (24°C) and constant wind speed (0.05 m.s-1) environment. Based on three repetitions of each case, the average values of heat transfer coefficients with their confidence intervals were calculated. Next, the results of this paper were compared to the results of similar experimental work of de Dear (de Dear et al. 1997) and Quintela (Quintela et al. 2004). A mismatch of the values is up to 1 W.m-2.K-1, while an extreme was found on the manikin’s seat with a difference of over 1 W.m-2.K-1. The outcomes of this study provide essential information on how to create detailed computational models of thermal environment with regards to thermal comfort where separate values of convective and radiative heat transfer coefficients are required.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20303 - Thermodynamics

Result continuities

  • Project

    <a href="/en/project/LO1202" target="_blank" >LO1202: NETME CENTRE PLUS</a><br>

  • Continuities

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

Others

  • Publication year

    2016

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    EXPERIMENTAL THERMAL AND FLUID SCIENCE

  • ISSN

    0894-1777

  • e-ISSN

    1879-2286

  • Volume of the periodical

    77

  • Issue of the periodical within the volume

    2016

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    8

  • Pages from-to

    257-264

  • UT code for WoS article

    000377829000023

  • EID of the result in the Scopus database

    2-s2.0-84977629589