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Thermal design and performance prediction of a shell condenser for closed-cycle underwater vehicles

Chen, Peiyu; Yan, Hongbin; Xie, Gongnan LU and Sunden, Bengt LU (2018) ASME 2018 International Mechanical Engineering Congress and Exposition, IMECE 2018 6A.
Abstract


The shell condenser is a key component for the underwater vehicles. To study its heat transfer performance and flow characteristics and to design a more efficient structure, a mathematical model is generated to simulate condensation inside the straight and helical channels. The model combines empirical correlations and MATLAB based on an iterative algorithm. Here, quality is used as a sign of the degree of condensation. The computational model is verified by comparison of simulations and experiments. Several cases are designed to reveal the effects of the initial condition. The inlet temperature varies from 160 to 220°C and the inlet mass velocity ranges between 133 and 200... (More)


The shell condenser is a key component for the underwater vehicles. To study its heat transfer performance and flow characteristics and to design a more efficient structure, a mathematical model is generated to simulate condensation inside the straight and helical channels. The model combines empirical correlations and MATLAB based on an iterative algorithm. Here, quality is used as a sign of the degree of condensation. The computational model is verified by comparison of simulations and experiments. Several cases are designed to reveal the effects of the initial condition. The inlet temperature varies from 160 to 220°C and the inlet mass velocity ranges between 133 and 200 kg/m
2
·s. The results show that the inlet temperature and mass velocity significantly affect flow and heat transfer in the condensation process. In addition, comparisons of the straight channel and helical channel with different Dh/R indicate that the heat transfer capability of the helical channel is obviously better than that of the straight channel, and the heat transfer coefficient and total pressure drop increase with the decrease of Dh/R. This study may provide useful information for performance prediction and structure design of shell condensers, and provide a relatively universal computational model for condensation in channels.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Condensation, Empirical correlation, Heat transfer enhancement, Package program, Simulation
host publication
Energy
volume
6A
publisher
American Society of Mechanical Engineers(ASME)
conference name
ASME 2018 International Mechanical Engineering Congress and Exposition, IMECE 2018
conference location
Pittsburgh, United States
conference dates
2018-11-09 - 2018-11-15
external identifiers
  • scopus:85063771566
ISBN
9780791852071
DOI
10.1115/IMECE2018-86999
language
English
LU publication?
yes
id
66ede232-e5c3-4fb8-8357-68f44cb831c0
date added to LUP
2019-04-23 14:58:38
date last changed
2019-05-14 04:53:56
@inproceedings{66ede232-e5c3-4fb8-8357-68f44cb831c0,
  abstract     = {<p><br>
                                                         The shell condenser is a key component for the underwater vehicles. To study its heat transfer performance and flow characteristics and to design a more efficient structure, a mathematical model is generated to simulate condensation inside the straight and helical channels. The model combines empirical correlations and MATLAB based on an iterative algorithm. Here, quality is used as a sign of the degree of condensation. The computational model is verified by comparison of simulations and experiments. Several cases are designed to reveal the effects of the initial condition. The inlet temperature varies from 160 to 220°C and the inlet mass velocity ranges between 133 and 200 kg/m                             <br>
                            <sup>2</sup><br>
                                                         ·s. The results show that the inlet temperature and mass velocity significantly affect flow and heat transfer in the condensation process. In addition, comparisons of the straight channel and helical channel with different Dh/R indicate that the heat transfer capability of the helical channel is obviously better than that of the straight channel, and the heat transfer coefficient and total pressure drop increase with the decrease of Dh/R. This study may provide useful information for performance prediction and structure design of shell condensers, and provide a relatively universal computational model for condensation in channels.                         <br>
                        </p>},
  author       = {Chen, Peiyu and Yan, Hongbin and Xie, Gongnan and Sunden, Bengt},
  isbn         = {9780791852071},
  keyword      = {Condensation,Empirical correlation,Heat transfer enhancement,Package program,Simulation},
  language     = {eng},
  location     = {Pittsburgh, United States},
  publisher    = {American Society of Mechanical Engineers(ASME)},
  title        = {Thermal design and performance prediction of a shell condenser for closed-cycle underwater vehicles},
  url          = {http://dx.doi.org/10.1115/IMECE2018-86999},
  volume       = {6A},
  year         = {2018},
}