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Research Papers: Piper and Riser Technology

Heat Loss of Insulated Pipes in Cross-Flow Winds

[+] Author and Article Information
Bjarte O. Kvamme

Department of Mechanical and Structural
Engineering and Materials Science,
University of Stavanger,
Randabergveien 10E,
Stavanger 4025, Rogaland, Norway
e-mail: bjarte@valhall.onl

Jino Peechanatt

Department of Mechanical and Structural
Engineering and Materials Science,
University of Stavanger,
Peechanatt (H), Panangad P.O.,
Ernakulam 682506, Kerala, India
e-mail: jino_2239@yahoo.co.in

Ove T. Gudmestad

Professor
Department of Mechanical and Structural
Engineering and Materials Science,
University of Stavanger,
Stavanger 4036, Rogaland, Norway
e-mail: ove.t.gudmestad@uis.no

Knut E. Solberg

Department of Mechanical and Structural
Engineering and Materials Science,
University of Stavanger,
Stavanger 4036, Rogaland, Norway
e-mail: knut.espen.solberg@gmc.no

Yaaseen A. Amith

Department of Mechanical and Structural
Engineering and Materials Science,
University of Stavanger,
Stavanger 4036, Rogaland, Norway
e-mail: yaaseen.a.amith@uis.no

1Corresponding author.

Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received July 26, 2017; final manuscript received September 6, 2018; published online October 12, 2018. Assoc. Editor: Søren Ehlers.

J. Offshore Mech. Arct. Eng 141(2), 021701 (Oct 12, 2018) (11 pages) Paper No: OMAE-17-1126; doi: 10.1115/1.4041458 History: Received July 26, 2017; Revised September 06, 2018

In recent years, there has been unprecedented interest shown in the Arctic region by the industry as it has become increasingly accessible for oil and gas exploration. This paper reviews existing literature on heat transfer coefficients and presents a comprehensive study of the heat transfer phenomenon in horizontal pipes (single/multiple pipe configurations) subjected to cross-flow wind besides the test methodology used to determine heat transfer coefficients through experiments. In this study, cross-flow winds of 5 m/s, 10 m/s, and 15 m/s blowing over several single pipe and multiple pipe configurations of diameter 25 mm and 50 mm steel pipes with insulation are examined. Based on the findings, the best correlation for use by the industry for single and multiple pipe configurations was found to be Churchill–Bernstein correlation. The deviation from the theoretical calculations and the experimental data for this correlation was found to be in the range of 0.40–1.61% for a 50 mm insulated pipe and −3.86% to −2.79% for a 25 mm insulated pipe. In the case of a multiple pipe configurations, the deviation was in the range 0.5–2.82% for 50 mm insulated pipe and 12–14% for 25 mm insulated pipes.

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References

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Figures

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Fig. 1

Temperature distribution through a cylinder with outer insulation

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Fig. 2

Picture of the testing rig mounted on a pallet inside the climate laboratory

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Fig. 3

Overhead view of the test rig, with key components marked

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Fig. 4

Pipe with ice glazing as tested

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Fig. 5

Insulated pipe with glued quartz particles compared to a normal, insulated pipe, experiment 6

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Fig. 6

Comparison of overall heat transfer coefficients of single insulated 50 mm pipes

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Fig. 7

Comparison of overall heat transfer coefficients of single uninsulated 50 mm pipes

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Fig. 8

Exp. 1: Overall heat transfer coefficients compared to experimental data for single insulated 50 mm pipe

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Fig. 9

Exp. 8: Overall heat transfer coefficients compared to experimental data for single insulated 25 mm pipe

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Fig. 10

Exp. 11: Overall heat transfer coefficients compared to experimental data for single uninsulated 50 mm pipe

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Fig. 11

Dimensions and measurements of pipes used for experimental testing

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Fig. 12

Drawing of sensor locations and grouping of experimental measurements

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Fig. 13

Drawing of wind nozzle and locations of wind speed measurements

Tables

Errata

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