Determination of heat transfer coefficient from housing surface of a totally enclosed fan-cooled machine during passive cooling

Payam Shams Ghahfarokhi; Andrejs Podgornovs; Ants Kallaste; Antonio J.Marques Cardoso; Anouar Belahcen; Toomas Vaimann; Bilal Asad; Hans Tiismus

doi:10.3390/machines9060120

Determination of heat transfer coefficient from housing surface of a totally enclosed fan-cooled machine during passive cooling

Payam Shams Ghahfarokhi^*, Andrejs Podgornovs, Ants Kallaste, Antonio J.Marques Cardoso, Anouar Belahcen, Toomas Vaimann, Bilal Asad, Hans Tiismus

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

This paper presents the analytical calculation of the heat transfer coefficient of a complex housing shape of a Totally Enclosed Fan-Cooled (TEFC) industrial machine when it works below 20% of its nominal speed or close to stall. Therefore, passive cooling is dominant, and most of the heat is extracted by the combination of natural convection and radiation phenomena. Under these conditions, the area-based composite approach was used for the development of the analytical calculation method. A test rig using a TEFC Synchronous Reluctance Motor (SynRM) was constructed, and the collected experimental data was used to validate the proposed analytical method successfully.

Original language	English
Article number	120
Number of pages	12
Journal	Machines
Volume	9
Issue number	6
DOIs	https://doi.org/10.3390/machines9060120
Publication status	Published - Jun 2021
MoE publication type	A1 Journal article-refereed

Keywords

AC motor
Analytical approach
Heat transfer
Natural convection
Passive cooling
Radiation
Thermal analysis
Totally enclosed fan-cooled machine
View factor

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ELEC_Ghahfarokhi_Determiation_of_heat_transfer_MachinesFinal published version, 1.64 MBLicence: CC BY

Cite this

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title = "Determination of heat transfer coefficient from housing surface of a totally enclosed fan-cooled machine during passive cooling",

abstract = "This paper presents the analytical calculation of the heat transfer coefficient of a complex housing shape of a Totally Enclosed Fan-Cooled (TEFC) industrial machine when it works below 20% of its nominal speed or close to stall. Therefore, passive cooling is dominant, and most of the heat is extracted by the combination of natural convection and radiation phenomena. Under these conditions, the area-based composite approach was used for the development of the analytical calculation method. A test rig using a TEFC Synchronous Reluctance Motor (SynRM) was constructed, and the collected experimental data was used to validate the proposed analytical method successfully.",

keywords = "AC motor, Analytical approach, Heat transfer, Natural convection, Passive cooling, Radiation, Thermal analysis, Totally enclosed fan-cooled machine, View factor",

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year = "2021",

month = jun,

doi = "10.3390/machines9060120",

language = "English",

volume = "9",

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AU - Ghahfarokhi, Payam Shams

AU - Podgornovs, Andrejs

AU - Kallaste, Ants

AU - Cardoso, Antonio J.Marques

AU - Belahcen, Anouar

AU - Vaimann, Toomas

AU - Asad, Bilal

AU - Tiismus, Hans

PY - 2021/6

Y1 - 2021/6

N2 - This paper presents the analytical calculation of the heat transfer coefficient of a complex housing shape of a Totally Enclosed Fan-Cooled (TEFC) industrial machine when it works below 20% of its nominal speed or close to stall. Therefore, passive cooling is dominant, and most of the heat is extracted by the combination of natural convection and radiation phenomena. Under these conditions, the area-based composite approach was used for the development of the analytical calculation method. A test rig using a TEFC Synchronous Reluctance Motor (SynRM) was constructed, and the collected experimental data was used to validate the proposed analytical method successfully.

AB - This paper presents the analytical calculation of the heat transfer coefficient of a complex housing shape of a Totally Enclosed Fan-Cooled (TEFC) industrial machine when it works below 20% of its nominal speed or close to stall. Therefore, passive cooling is dominant, and most of the heat is extracted by the combination of natural convection and radiation phenomena. Under these conditions, the area-based composite approach was used for the development of the analytical calculation method. A test rig using a TEFC Synchronous Reluctance Motor (SynRM) was constructed, and the collected experimental data was used to validate the proposed analytical method successfully.

KW - AC motor

KW - Analytical approach

KW - Heat transfer

KW - Natural convection

KW - Passive cooling

KW - Radiation

KW - Thermal analysis

KW - Totally enclosed fan-cooled machine

KW - View factor

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DO - 10.3390/machines9060120

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SN - 2075-1702

VL - 9

JO - Machines

JF - Machines

IS - 6

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ER -

Determination of heat transfer coefficient from housing surface of a totally enclosed fan-cooled machine during passive cooling

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