Thermal reliability of Al-Si eutectic alloy for thermal energy storage
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065 (China)
- Department of Physics and TcSUH, University of Houston, Houston, TX 77204 (United States)
- Key Laboratory of Fluid and Power Machinery of Ministry of Education & Center for Advanced Materials and Energy, Xihua University, Chengdu, Sichuan 610039 (China)
Highlights: • Thermal reliability of material is investigated after long time vacuum thermal cycling. • The latent heat of fusion show almost no change after 1000 thermal cycles. • The thermal conductivity exhibit a good stability after 1000 cycles. • Al-Si eutectic alloy is a potentially good candidate for thermal energy storage applications. - Abstract: The thermal reliability of Al-Si eutectic alloy as phase change materials (PCMs) was investigated through vacuum thermal cycling 250, 500, 750, and 1000 times going through the solid-liquid phase change. The changes in thermal properties of Al-Si eutectic alloy, including melting point, latent heat, specific heat, thermal diffusivity and thermal conductivity, were investigated using differential scanning calorimetric (DSC) and laser flash apparatus. The results revealed that, with increasing the number of cycles, the melting point and latent heat of fusion of the Al-Si eutectic alloy showed almost no changes. Moreover, the thermal conductivity showed an outstanding stability after 1000 thermal cycles. Therefore, it is concluded that the thermal reliability of Al-Si eutectic alloy is more than adequate for long-term performance as a phase change material for thermal energy storage (TES) applications.
- OSTI ID:
- 22730457
- Journal Information:
- Materials Research Bulletin, Vol. 95; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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