Determination of Heat Transfer Coefficient for the Air Forced Cooling Over a Flat Side of Coil

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Determination of Heat Transfer Coefficient for the Air Forced Cooling Over a Flat Side of Coil. / Ghahfarokhi, Payam Shams; Kallaste, Ants; Belahcen, Anouar; Vaimann, Toomas.

In: ELECTRICAL, CONTROL AND COMMUNICATION ENGINEERING, Vol. 15, No. 1, 09.2019, p. 15-20.

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@article{cc86d99106c24b12a46136d84a91f6af,
title = "Determination of Heat Transfer Coefficient for the Air Forced Cooling Over a Flat Side of Coil",
abstract = "The paper deals with the analytical and experimental determination of the forced convection heat transfer coefficients over the flat coil module. In the analytical part, the forced convection coefficients at different wind speeds are calculated based on various known equations of the forced convection heat transfer coefficient with unheated starting length. The experimental part presents the description of the test: loading the coil with DC current and measurements of the coil temperatures with thermal sensors while it was inside a wind tunnel. Based on the measurement, the convection coefficients were determined. In the final part, the experimental and analytical results are compared. It is found that the accuracy of the analytical results is more precise in highly turbulent flows.",
keywords = "Flat surface, Forced convection, Heat transfer coefficient, Laminar and turbulent flow, Convection coefficient, Natural-convection",
author = "Ghahfarokhi, {Payam Shams} and Ants Kallaste and Anouar Belahcen and Toomas Vaimann",
year = "2019",
month = "9",
doi = "10.2478/ecce-2019-0003",
language = "English",
volume = "15",
pages = "15--20",
journal = "ELECTRICAL, CONTROL AND COMMUNICATION ENGINEERING",
issn = "2255-9140",
publisher = "Sciendo",
number = "1",

}

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TY - JOUR

T1 - Determination of Heat Transfer Coefficient for the Air Forced Cooling Over a Flat Side of Coil

AU - Ghahfarokhi, Payam Shams

AU - Kallaste, Ants

AU - Belahcen, Anouar

AU - Vaimann, Toomas

PY - 2019/9

Y1 - 2019/9

N2 - The paper deals with the analytical and experimental determination of the forced convection heat transfer coefficients over the flat coil module. In the analytical part, the forced convection coefficients at different wind speeds are calculated based on various known equations of the forced convection heat transfer coefficient with unheated starting length. The experimental part presents the description of the test: loading the coil with DC current and measurements of the coil temperatures with thermal sensors while it was inside a wind tunnel. Based on the measurement, the convection coefficients were determined. In the final part, the experimental and analytical results are compared. It is found that the accuracy of the analytical results is more precise in highly turbulent flows.

AB - The paper deals with the analytical and experimental determination of the forced convection heat transfer coefficients over the flat coil module. In the analytical part, the forced convection coefficients at different wind speeds are calculated based on various known equations of the forced convection heat transfer coefficient with unheated starting length. The experimental part presents the description of the test: loading the coil with DC current and measurements of the coil temperatures with thermal sensors while it was inside a wind tunnel. Based on the measurement, the convection coefficients were determined. In the final part, the experimental and analytical results are compared. It is found that the accuracy of the analytical results is more precise in highly turbulent flows.

KW - Flat surface

KW - Forced convection

KW - Heat transfer coefficient

KW - Laminar and turbulent flow

KW - Convection coefficient

KW - Natural-convection

U2 - 10.2478/ecce-2019-0003

DO - 10.2478/ecce-2019-0003

M3 - Article

VL - 15

SP - 15

EP - 20

JO - ELECTRICAL, CONTROL AND COMMUNICATION ENGINEERING

JF - ELECTRICAL, CONTROL AND COMMUNICATION ENGINEERING

SN - 2255-9140

IS - 1

ER -

ID: 37575176