Full Content is available to subscribers

Subscribe/Learn More  >

Analysis of a Compact Heat Exchanger Using Porous Media Cooling for Use in a SCO2 Rankine Cycle

[+] Author Affiliations
Kevin R. Anderson, Thomas Gross, Christopher McNamara, Maryam Shafahi

California State Polytechnic University, Pomona, CA

Paper No. IMECE2016-65012, pp. V008T10A096; 12 pages
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 8: Heat Transfer and Thermal Engineering
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5062-6
  • Copyright © 2016 by ASME


This paper presents the analysis of a compact heat exchanger design for application to a supercritical CO2 (SCO2) Rankine cycle waste energy conversion cycle. In this paper a compact heat exchanger using a multi-pass wavy channel configuration with surface area density β = 1222 m2/m3 and overall surface efficiency of 50% is analyzed using the NTU-ε method. Due to the high pressures used in the SCO2 Rankine cycle (high side of 20 MPa low side of 12.4 MPa) the variability of the specific heat of SCO2 leads to thermal pinch which must be accounted for in the modeling. Heat transfer augmentation is accomplished using porous media Silica particles on the low-side (12.4 MPa, a.k.a. hot fluid stream) of the SCO2 heat exchanger. Results for heat transfer area versus duty, temperature approach versus heat transfer area, and, effectiveness versus duty are presented. Parametric results for entropy generation and Second Law considerations are presented in order to place a realistic bound on the analysis. Effects of porous flow on exit temperature, temperature approach and effectiveness are summarized. Results of this study can be used to guide design and development of compact heat exchanger selection for renewable energy waste heat recovery applications.

Copyright © 2016 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

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 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