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TECHNICAL PAPERS

Simulation of Transient Heat Transfer of Sandwich Pipes With Active Electrical Heating

[+] Author and Article Information
Jian Su1

Nuclear Engineering Program, COPPE,  Universidade Federal do Rio de Janeiro, C.P. 68509, 21945-970, Rio de Janeiro, Brazilsujian@con.ufrj.br

Djane R. Cerqueira

Nuclear Engineering Program, COPPE,  Universidade Federal do Rio de Janeiro, C.P. 68509, 21945-970, Rio de Janeiro, Brazildcerqueira@con.ufrj.br

Segen F. Estefen

Ocean Engineering Program, COPPE,  Universidade Federal do Rio de Janeiro, C.P. 68508, 21945-970, Rio de Janeiro, Brazilsegen@lts.coppe.ufrj.br

1

Corresponding author.

J. Offshore Mech. Arct. Eng 127(4), 366-370 (Apr 04, 2005) (5 pages) doi:10.1115/1.2073090 History: Received September 23, 2004; Revised April 04, 2005

This paper presents an analysis of transient heat transfer in sandwich pipelines with active electrical heating. The mathematical models governing the heat conduction in the composite pipeline and the energy transport in the produced fluid were solved by using finite difference methods. Numerical results of computational simulation of cool-down for three sandwich pipeline configurations under typical production conditions were presented. The analysis showed that the sandwich pipe with active heating is a viable solution to meet severe flow assurance requirements of ultra-deepwater oil production even under unplanned and prolonged cool-down conditions.

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Copyright © 2005 by American Society of Mechanical Engineers
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Figures

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Figure 1

Cross section of a sandwich pipeline with active heating by four strips of electrical heater

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Figure 2

Cross section of a multilayered composite pipeline

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Figure 3

Longitudinal view of a pipeline

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Figure 4

Case 1: temperature distributions of the produced fluid during cool-down without active heating

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Figure 5

Case 1: temperature distributions of the produced fluid during cool-down with active heating

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Figure 6

Case 2: temperature distributions of the produced fluid during cool-down without active heating

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Figure 7

Case 2: temperature distributions of the produced fluid during cool-down with active heating

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Figure 8

Case 3: temperature distributions of the produced fluid during cool-down without active heating

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Figure 9

Case 3: temperature distributions of the produced fluid during cool-down with active heating

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