Heat-transfer fins give phase change materials a boost
Modelling points the way towards optimal designs for systems that store and release heat The post Heat-transfer fins give phase change materials a boost appeared first on Physics World .
Researchers in Italy have explored the potential of phase change materials (PCMs) to enhance heat transfer efficiency. PCMs are known for their ability to absorb and release large quantities of energy during a phase transition, but their thermal conductivity is relatively low. To address this limitation, researchers Paolo Proia, Mauro Sbragaglia, and Giacomo Falcucci proposed modifying PCM sleeves with fin-shaped extensions.
These fins could enhance heat transfer efficiency by increasing the surface area available for heat exchange. However, the researchers recognized the importance of fin design, spacing, and quantity in achieving optimal performance.
The study published in EPL aimed to investigate the effects of fin layouts on the performance of PCMs. By examining different configurations, the researchers discovered that placing fins too close together could result in interference, causing energy wastage due to overlapping influence zones. Conversely, the researchers found that gaps between the fins allowed for the formation of larger convective structures, which improved overall heat transfer efficiency.
The study also highlighted the challenges of modeling melting in 3D, given the increased computational complexity and the need for high resolution to accurately capture the various phenomena involved.
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