Lund University Publications

LUND UNIVERSITY LIBRARIES

Advanced

Prediction and Comparison of Shell Condensers with Straight or Helical Channels for Underwater Vehicles

Chen, Peiyu ; Xie, Gongnan LU and Sunden, Bengt LU (2019) In Journal of Thermal Science and Engineering Applications 11(5).
Abstract

The shell condenser is one of the key components of underwater vehicles. To study its thermal performance and to design a more efficient structure, a computational model is generated to simulate condensation inside straight and helical channels. The model combines empirical correlations and a MATLAB-based iterative algorithm. The vapor quality is used as a sign of the degree of condensation. Three calculation models are compared, and the optimal model is verified by a comparison of simulated results and available experimental data. Several cases are designed to reveal the effects of various inlet conditions and the diameter-over-radius (Dh/R) ratio. The results show that the inlet temperature and mass rate significantly affect the flow... (More)

The shell condenser is one of the key components of underwater vehicles. To study its thermal performance and to design a more efficient structure, a computational model is generated to simulate condensation inside straight and helical channels. The model combines empirical correlations and a MATLAB-based iterative algorithm. The vapor quality is used as a sign of the degree of condensation. Three calculation models are compared, and the optimal model is verified by a comparison of simulated results and available experimental data. Several cases are designed to reveal the effects of various inlet conditions and the diameter-over-radius (Dh/R) ratio. The results show that the inlet temperature and mass rate significantly affect the flow and heat transfer in the condensation process, the heat transfer capabilities of the helical channels are much better than that of the straight channel, and both the heat transfer coefficient and total pressure drop increase with the decrease of Dh/R. This study may provide a useful reference for performance prediction and structural design of shell condensers used for underwater vehicles and may provide a relatively universal prediction model for condensation in channels.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Condensation, heat transfer coefficient, inlet condition, pressure drop, straight and helical channel
in
Journal of Thermal Science and Engineering Applications
volume
11
issue
5
article number
051007
publisher
American Society Of Mechanical Engineers (ASME)
external identifiers
  • scopus:85063628508
ISSN
1948-5085
DOI
10.1115/1.4042591
language
English
LU publication?
yes
id
367cc98a-3ca6-4606-a99f-2a4d404c0475
date added to LUP
2019-04-09 08:34:20
date last changed
2020-01-22 09:27:44
@article{367cc98a-3ca6-4606-a99f-2a4d404c0475,
  abstract     = {<p>The shell condenser is one of the key components of underwater vehicles. To study its thermal performance and to design a more efficient structure, a computational model is generated to simulate condensation inside straight and helical channels. The model combines empirical correlations and a MATLAB-based iterative algorithm. The vapor quality is used as a sign of the degree of condensation. Three calculation models are compared, and the optimal model is verified by a comparison of simulated results and available experimental data. Several cases are designed to reveal the effects of various inlet conditions and the diameter-over-radius (Dh/R) ratio. The results show that the inlet temperature and mass rate significantly affect the flow and heat transfer in the condensation process, the heat transfer capabilities of the helical channels are much better than that of the straight channel, and both the heat transfer coefficient and total pressure drop increase with the decrease of Dh/R. This study may provide a useful reference for performance prediction and structural design of shell condensers used for underwater vehicles and may provide a relatively universal prediction model for condensation in channels.</p>},
  author       = {Chen, Peiyu and Xie, Gongnan and Sunden, Bengt},
  issn         = {1948-5085},
  language     = {eng},
  number       = {5},
  publisher    = {American Society Of Mechanical Engineers (ASME)},
  series       = {Journal of Thermal Science and Engineering Applications},
  title        = {Prediction and Comparison of Shell Condensers with Straight or Helical Channels for Underwater Vehicles},
  url          = {http://dx.doi.org/10.1115/1.4042591},
  doi          = {10.1115/1.4042591},
  volume       = {11},
  year         = {2019},
}