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Meeting MS&T22: Materials Science & Technology
Symposium Energy Materials for Sustainable Development
Presentation Title Thermoplastic Elastomers for High Performance Barocaloric Cooling
Author(s) Naveen Daham Weerasekera, Kameswara Pavan Kumar Ajjarapu , Kavish Sudan, Gamini Sumanasekera, Kunal Kate, Bikram Bhatia
On-Site Speaker (Planned) Naveen Daham Weerasekera
Abstract Scope Solid state refrigeration (SSR) represents a promising alternative to vapor compression refrigeration systems which have a high global warming potential. In comparison to other SSR technologies, systems based on the barocaloric effect – temperature/entropy change in response to hydrostatic pressure – remain relatively unexplored. Soft materials are attractive candidate materials for SSR due to their low cost, high compressibility and large barocaloric response. In this work we investigate the barocaloric performance of commercially available block copolymer thermoplastic elastomers. We experimentally characterize the mechanical, thermal and barocaloric properties of these materials, and evaluate their potential for SSR. We measured a normalized refrigeration capacity as high as 42 kJ K-1 GPa-1 for a 65℃ temperature span at relatively low pressures (<100 MPa), and a quasi-adiabatic temperature change of 28 oC (applied pressure: 434 MPa). These results demonstrate the superior barocaloric properties of thermoplastic elastomers and their promise for next generation SSR devices.
Proceedings Inclusion? Undecided

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