Full Content is available to subscribers

Subscribe/Learn More  >

Thermal Modeling of High Temperature Energy Storage Using Encapsulated Phase Change Materials

[+] Author Affiliations
Ali F. Elmozughi, Weihuan Zhao, Sudhakar Neti, Alparslan Oztekin

Lehigh University, Bethlehem, PA

Paper No. IMECE2012-86794, pp. 1621-1628; 8 pages
  • ASME 2012 International Mechanical Engineering Congress and Exposition
  • Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D
  • Houston, Texas, USA, November 9–15, 2012
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4523-3
  • Copyright © 2012 by ASME


Transient heat transfer analysis is conducted to investigate high temperature energy storage using encapsulated phase change materials (EPCMs) for concentrated solar power applications. The phase change material considered is the eutectic mixture of NaCl-MgCl2 (57 mole% NaCl and 43 mole% MgCl2) encapsulated by stainless steel in a cylindrical shaped capsule (or tube). Energy storage into EPCM and energy retrieval from EPCM is simulated for various flow conditions of the heat transfer fluid. Heat storage/retrieval times are determined from numerical simulations for various sizes of capsules and flow conditions by an accurate modeling of propagating solid/liquid interface. Numerical simulations are conducted by employing a front tracking method and the enthalpy–porosity approach. A two-dimensional horizontally placed cylindrical shaped EPCM capsule is considered in simulations using gas (air) and liquid (VP1-Therminol) as heat transfer fluids. The results predicted by the front tracking method agree well with those predicted by the enthalpy–porosity method. It is illustrated by the present work that enthalpy–porosity method can be employed to simulate the modeling at the single capsule level and system level. System level storage unit is a thermocline that includes an arrangement of several EPCMs.

Copyright © 2012 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