| Abstrakt: |
Phase change heat storage materials (PCM) are a class of materials with the ability to store or release a large amount of thermal energy at constant temperatures in the form of so-called latent heat, which is the heat that is necessary to supply or remove from the system to make it change the phase. Due to their energy efficiency, these materials are becoming more and more popular and offer a whole range of practical applications. It is worth mentioning, for example, their use for solar energy storage, waste heat recovery or thermal energy management in buildings [1 – 5]. In the experimental part of this work, we focus on the study of phase transformations and energy accumulation and on the characterization of the thermal properties of new industrial PCMs from the Rubitherm® RT series [10 – 12]. These paraffine wax based materials were developed by the German company Rubitherm Technologies GmbH. Relative thermal conductivity of these materials enables their application even in cases requiring rapid temperature changes and efficient heat transfer, such as systems for cooling electronics or thermal management of batteries. Experiments were performed with three commercially available materials Rubitherm® RT18HC, Rubitherm® RT28HC and Rubitherm® RT35HC. These materials are chemically inert, do not subcool during phase transformations and have a long service life. Materials from the Rubitherm® RT series are available in a full range of different melting temperatures, from −9 °C to 100 °C. For this experiment, materials with melting temperatures of 18 °C, 28 °C and 35 °C were chosen, as their names suggest [10 – 12]. [ABSTRACT FROM AUTHOR] |
