TY - GEN
T1 - Experimental Validation of Composite Phase Change Material Optimized for Thermal Energy Storage
AU - Tamraparni, Achutha
AU - Hoe, Alison
AU - Deckard, Michael
AU - Zhang, Chen
AU - Elwany, Alaa
AU - Shamberger, Patrick J.
AU - Felts, Jonathan R.
N1 - Publisher Copyright:
©2021 IEEE
PY - 2021
Y1 - 2021
N2 - Thermal energy storage based on phase change materials (PCMs) are advantageous due to their large latent heat storage capacity and favorable melting temperatures. While PCMs have high energy storage by volume, they are limited by low thermal conductivity properties and are often integrated with high thermal conductivity materials to increase the overall power density of phase change/metal composites. The general approach to make such PCM composites consists of dispersing small volume fraction of high thermal conductivity nanomaterials or by implementing micron sized metal foams and flakes, or by using macro scale fins to increase the rate of heat transfer in PCMs. Here, we describe a PCM composite using effective medium properties which are valid for a critical length scale and identify the volume fraction at this scale that is optimized for thermal energy storage. Experimental investigations for cartesian and cylindrical composites made of AlSi12 alloy and octadecane indicate a critical pitch of 1 mm and an optimum metal volume fraction of 0.5 to 0.6. Combined, the optimized composite PCM for thermal energy storage have significantly larger length scale and volume fractions of metal components which is facilitated conveniently using additive manufacturing.
AB - Thermal energy storage based on phase change materials (PCMs) are advantageous due to their large latent heat storage capacity and favorable melting temperatures. While PCMs have high energy storage by volume, they are limited by low thermal conductivity properties and are often integrated with high thermal conductivity materials to increase the overall power density of phase change/metal composites. The general approach to make such PCM composites consists of dispersing small volume fraction of high thermal conductivity nanomaterials or by implementing micron sized metal foams and flakes, or by using macro scale fins to increase the rate of heat transfer in PCMs. Here, we describe a PCM composite using effective medium properties which are valid for a critical length scale and identify the volume fraction at this scale that is optimized for thermal energy storage. Experimental investigations for cartesian and cylindrical composites made of AlSi12 alloy and octadecane indicate a critical pitch of 1 mm and an optimum metal volume fraction of 0.5 to 0.6. Combined, the optimized composite PCM for thermal energy storage have significantly larger length scale and volume fractions of metal components which is facilitated conveniently using additive manufacturing.
KW - Phase change composites
KW - Phase change materials
KW - Thermal energy storage
UR - http://www.scopus.com/inward/record.url?scp=85125300365&partnerID=8YFLogxK
U2 - 10.1109/ITherm51669.2021.9503204
DO - 10.1109/ITherm51669.2021.9503204
M3 - Conference contribution
AN - SCOPUS:85125300365
T3 - InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITHERM
SP - 551
EP - 555
BT - Proceedings of the 20th InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITherm 2021
PB - IEEE Computer Society
T2 - 20th InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITherm 2021
Y2 - 1 June 2021 through 4 June 2021
ER -
