0
Research Papers

A Study of Shellside Condensation of a Hydrocarbon in the Presence of Noncondensable Gas on Twisted Elliptical Tubes

[+] Author and Article Information
H. F. Gu

Associate Professor
State Key Laboratory of Multiphase
Flow in Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: ghf@mail.xjtu.edu.cn

Q. Chen

State Key Laboratory
of Multiphase Flow in Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 1216529725@qq.com

H. J. Wang

Professor
State Key Laboratory of Multiphase Flow
in Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: whj@mail.xjtu.edu.cn

Z. Zhang

State Key Laboratory of Multiphase Flow
in Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 752511649@qq.com

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received July 27, 2015; final manuscript received July 3, 2016; published online August 30, 2016. Assoc. Editor: Amir Jokar.

J. Thermal Sci. Eng. Appl 8(4), 041013 (Aug 30, 2016) (7 pages) Paper No: TSEA-15-1202; doi: 10.1115/1.4034256 History: Received July 27, 2015; Revised July 03, 2016

Experimental data were collected for one smooth round tube bundle and three twisted elliptical tube bundles using a kerosene mixture as a condensing vapor and air as a noncondensable gas. Experimental results showed that heat transfer for the twisted tubes was enhanced by a factor of 1.5–3 as compared to the plain tubes, depending on the specific tube geometry and process conditions. Heat transfer enhancement was found to increase with decreasing twist pitch, increasing tube ellipticity, and increasing mass flow rate. The presence of noncondensable gas was observed to significantly decrease condensation heat transfer performance due to the increase in mass diffusion resistance and lowering of the vapor condensation temperature at the vapor–liquid interface. Using the heat and mass transfer analogy method, a correlation for the condensation heat transfer coefficient of the mixture has been developed from the experimental data. Comparisons show that the predicative accuracy of the new correlation is within ±25% for the majority of experimental data.

FIGURES IN THIS ARTICLE
<>
Copyright © 2016 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 2

Test bundle and tube layout

Grahic Jump Location
Fig. 1

Process flow diagram of condensation test rig

Grahic Jump Location
Fig. 3

Thermocouple arrangement

Grahic Jump Location
Fig. 4

Comparison of heat transfer coefficients versus Rev at xair = 0.05–0.098

Grahic Jump Location
Fig. 5

Comparison of heat transfer coefficients versus Rev at xair = 0.15–0.20

Grahic Jump Location
Fig. 6

Comparison of heat transfer coefficients for different A/B versus xair

Grahic Jump Location
Fig. 7

Comparison of heat transfer coefficients for different St and A/B versus xair

Grahic Jump Location
Fig. 8

Comparison of heat transfer coefficients for different St and A/B versus xair

Grahic Jump Location
Fig. 9

Profile of heat transfer coefficient versus Sc, Ja, and xmix along tube length

Grahic Jump Location
Fig. 10

Comparison of predicted versus measured condensation heat transfer coefficients

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In