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Development of a new methodology for validating thermal storage media: Application to phase change materials

机译:开发一种用于验证储热介质的新方法:应用于相变材料

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摘要

Long‐term stability and long‐term performance of thermal storage media are a key issue that should be thoroughly analysed when developing storage systems. However, no testing protocol or guideline exists up to now for validating storage media, so that authors apply their own criteria, not only for designing testing procedures but also for predicting the material behaviour under long‐term operation. This paper aims to cover this gap by proposing a methodology for validating thermal storage media; in particular, phase change materials (PCMs). This methodology consists of different stages that include PCM characterization, preliminary assessment tests, and accelerated life testing. For designing the accelerated life tests, lifetime relationship models have to be obtained in order to predict PCM long‐term behaviour under service conditions from shorter tests performed under stress conditions. The approach followed in this methodology will be valid for materials to be used as sensible or thermochemical storage media, too.
机译:储热介质的长期稳定性和长期性能是开发存储系统时应彻底分析的关键问题。但是,到目前为止,尚无用于验证存储介质的测试协议或准则,因此,作者可以运用自己的标准,不仅用于设计测试程序,还可以用于预测长期操作下的材料行为。本文旨在通过提出一种验证热存储介质的方法来弥补这一差距。特别是相变材料(PCM)。此方法包括PCM表征,初步评估测试和加速寿命测试等不同阶段。为了设计加速寿命测试,必须获得寿命关系模型,以便根据应力条件下进行的较短测试来预测服务条件下的PCM长期行为。这种方法学中遵循的方法对于用作敏感或热化学存储介质的材料也将是有效的。

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