Rights statement: This is the author’s version of a work that was accepted for publication in Materials Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Letters, 185, 2016 DOI: 10.1016/j.matlet.2016.08.104
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Assessing the potential for multi-functional textquotedbllefthybridtextquotedblright porous Al-phase change material structures
AU - Kennedy, Andrew R.
N1 - This is the author’s version of a work that was accepted for publication in Materials Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Letters, 185, 2016 DOI: 10.1016/j.matlet.2016.08.104
PY - 2016/12/15
Y1 - 2016/12/15
N2 - This study reports the potential for porous aluminium structures, containing porosity in the region of 50textendash80 to provide enhancement of the rate of energy capture in phase change materials, whilst being capable of providing a basic mechanical function. The energy stored and the time for thermal exchange between warm water (at 65 textdegreeC) and porous aluminium, pure PCM and an Al-PCM hybrid structure was measured. It was observed that the melting of the PCM within the hybrid structure can be greatly accelerated by the continuous, porous aluminium structure. The energy uptake per second was found to follow an approximately linear dependence on the thermal effusivity for the material. This knowledge was used to predict the potential for enhancement of the rate of energy capture, by varying the porosity in the structure, whilst also estimating the detriment to the energy storage density and the mechanical strength. Appreciating this trade off in performance and properties is vital to the design of multi-functional porous structures.
AB - This study reports the potential for porous aluminium structures, containing porosity in the region of 50textendash80 to provide enhancement of the rate of energy capture in phase change materials, whilst being capable of providing a basic mechanical function. The energy stored and the time for thermal exchange between warm water (at 65 textdegreeC) and porous aluminium, pure PCM and an Al-PCM hybrid structure was measured. It was observed that the melting of the PCM within the hybrid structure can be greatly accelerated by the continuous, porous aluminium structure. The energy uptake per second was found to follow an approximately linear dependence on the thermal effusivity for the material. This knowledge was used to predict the potential for enhancement of the rate of energy capture, by varying the porosity in the structure, whilst also estimating the detriment to the energy storage density and the mechanical strength. Appreciating this trade off in performance and properties is vital to the design of multi-functional porous structures.
KW - Porous materials
KW - Metallic composites
KW - Thermal properties
KW - Energy storage and conversion
U2 - 10.1016/j.matlet.2016.08.104
DO - 10.1016/j.matlet.2016.08.104
M3 - Journal article
VL - 185
SP - 339
EP - 341
JO - Materials Letters
JF - Materials Letters
SN - 0167-577X
ER -