Visualization study of the shrinkage void distribution in thermal energy storage capsules of different geometry

Journal Article · Mon Jan 15 00:00:00 EST 2007 · Experimental Thermal and Fluid Science

DOI:https://doi.org/10.1016/J.EXPTHERMFLUSCI.2006.03.026· OSTI ID:20829600

Revankar, Shripad T ^[1]; Croy, Travis ^[2]

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1. School of Nuclear Engineering, Purdue University, West Lafayette, IN 47907 (United States)
2. INEEL, Idaho Falls, ID 83404-5558 (United States)

The presence of concentrated shrinkage voids in thermal energy storage systems employing encapsulated phase change material can cause serious problems when one attempts to melt the solidified phase change material for the next thermal cycle. Experiments were performed and void-formation phenomena with rectangular flat plate, spherical, and torus shape capsules were investigated. The initial void growth, distribution and the total void in the capsule were photographically studied from transparent capsules using cyclohexane, hexadecane, butanediol and octadecane as phase change materials. The observations on freezing process and the shrinkage void distribution are presented. (author)

• OSTI ID: 20829600
• Journal Information: Experimental Thermal and Fluid Science, Vol. 31, Issue 3; Other Information: Elsevier Ltd. All rights reserved; ISSN 0894-1777
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
25 ENERGY STORAGE
PHASE CHANGE MATERIALS
VOIDS
THERMAL ENERGY STORAGE EQUIPMENT
ENCAPSULATION
PLATES
SPHERES
TORI
SPATIAL DISTRIBUTION
CYCLOHEXANE
HEXADECANE
ALKANES
BUTANEDIOLS