0
Research Papers: Heat Exchangers

Exergy Study of Fouling Factors in Heat Exchanger Networks

[+] Author and Article Information
Zunlong Jin1

Thermal Energy Engineering Research Center, Zhengzhou University, Zhengzhou 450002, P.R. Chinazljin@zzu.edu.cn

Qiwu Dong, Minshan Liu

Thermal Energy Engineering Research Center, Zhengzhou University, Zhengzhou 450002, P.R. China

1

Corresponding author.

J. Heat Transfer 132(1), 011802 (Oct 30, 2009) (4 pages) doi:10.1115/1.3194766 History: Received December 30, 2008; Revised May 28, 2009; Published October 30, 2009

Selection of fouling factors is somewhat arbitrary in heat exchanger networks (HENs) synthesis. Fouling factors were reconsidered in this article for heat exchanger networks design. An objective function based on exergoeconomic analysis was introduced to assess optimal less conservative fouling factors. The objective took account of exergy consumption expense and heat exchanger capital cost at the same time. The exergy consumption of heat transfer in HENs was calculated using subsection integral on balanced composite curves. The proposed method was applied to an industrial case. Numerical results indicated that the optimal less conservative fouling factors were 80% of the original values and the heat transfer area of the system saved 350m2 compared with root design. So it is necessary to reconsider the values of fouling factors for HENs design and that exergoeconomic analysis is useful in determining the optimal less conservative fouling factors.

FIGURES IN THIS ARTICLE
<>
Copyright © 2010 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Balanced composite curves for exergy consumption calculation

Grahic Jump Location
Figure 2

HENs of grassroot design in local site

Grahic Jump Location
Figure 3

Exergy consumption versus heat transfer area needed

Grahic Jump Location
Figure 4

Area saving versus fouling factor

Grahic Jump Location
Figure 5

Exergy consumption increasing versus fouling factor

Grahic Jump Location
Figure 6

Cost saving versus fouling factor

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