Research Papers

Experimental Thermal Analysis of a Mechanical Face Seal

[+] Author and Article Information
K. Ayadi

Département Génie Mécanique et
Système Complexes,
Institut Pprime,
CNRS-Université de Poitiers-ENSMA
(UPR 3346),
Futuroscope Chasseneuil 86962, France
e-mail: khouloud.ayadi@univ-poitiers.fr

N. Brunetière, B. Tournerie

Département Génie Mécanique et
Système Complexes,
Institut Pprime,
CNRS-Université de Poitiers-ENSMA
(UPR 3346),
Futuroscope Chasseneuil 86962, France

A. Maoui

CETIM Pôle Technologies de l'Etanchéité 74,
route de la Jonelière-BP 82617,
Nantes 44326, France

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received September 12, 2015; final manuscript received March 10, 2016; published online May 3, 2016. Assoc. Editor: Sandra Boetcher.

J. Thermal Sci. Eng. Appl 8(3), 031011 (May 03, 2016) (7 pages) Paper No: TSEA-15-1260; doi: 10.1115/1.4033212 History: Received September 12, 2015; Revised March 10, 2016

An experimental study quantifying the thermal behavior of a mechanical seal is performed. Temperature measurements are obtained using embedded thermocouples within the stator at different locations, and the tests are carried out at different sealed fluid pressures and rotary shaft speeds. Furthermore, an inverse method is used to calculate the heat transfer from the measured local temperatures. The Nusselt number is calculated along the wetted surface as a function of operating conditions; the obtained values are discussed in comparison to previous works. Our results demonstrate that the amplitude of the thermal effects is highly dependent on the operating conditions. The temperature rise being increased by 600% when the rotating speed is raised from 1000 to 6000 rpm and the fluid pressure from 1 to 5 MPa. Moreover, the temperature can vary by several degrees when the distance from the wetted diameter (cooled by convection) and the friction face (heat source) is varied from less than 2 mm.

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Fig. 1

General view of the test rig

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Fig. 2

Sectional view of the experimental cell

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Fig. 3

Tested mechanical seal

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Fig. 4

Thermocouple locations: (a) 3D and (b) in the plane

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Fig. 5

Evolution of the temperature measured by the different thermocouples for ω = 6000 rpm

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Fig. 6

Evolution of the temperature measured by the thermocouple T13 for different feeding pressures at Tf = 40 °C

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Fig. 7

Evolution of thermal figure of merit for different fluid pressure values

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Fig. 8

Experimental and analytical maps of temperature rise in the stator for ω = 6000 rpm and P = 1, 3, and 5 MPa

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Fig. 9

Nusselt number from the data of Phillips et al. [7]

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Fig. 10

Comparison of experimental Nusselt number values to different empirical correlations



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