This work examines the possible use of post-pyrolysis char made from spent vehicle tyres as a carrier for phase change materials (PCM), which could be used as an additive to cement mortar. Because of the ability of PCM to accumulate heat, the cement composite obtained from it, apart from its structural and strength properties, will acquire an additional energy storage function, which can be very important for energy-saving construction. In the development of the new cement composite, Rubitherm RT22 was used as a PCM. Rubitherm's phase change temperature is within the range (ca 17–25 °C) of temperature fluctuations in buildings. Systematic comparative tests were carried out in order to evaluate the thermal properties of the new cement composite containing 0.67, 2.00, 3.33, 4.67 and 6.67% of char, which contains 32% PCM, i.e. the maximum amount that can be permanently absorbed without activation. These tests included calorimetric measurements of the influence of the composite's composition on the cumulative specific heat, and took phase change effects into consideration. The results of the experiments showed that the use of tyre char as a PCM carrier in cement mortars is not only possible, but also thermodynamically advantageous.
Authors
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1016/j.energy.2021.121936
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2022
