Abstract
An experimental study was planned and executed for the application of Phase Change Materials (PCM) containing fiber-reinforced cementitious panels on buildings. The objective of the research was to enhance the thermal performance of the panels. Panels with the dimensions of 60x120x2.5 cm were produced and experimental investigations about the thermal and the mechanical performance of the composites were carried out. PCM containing composites showed higher latent heat capacity and lower thermal conductivity. Reinforcement with chopped fibers compensated the strength loss due to PCM in cementitious panels. Specific fracture energy of the panels increased with increase of PCM ratio. PCM containing fiber reinforced cementitious panels showed great potential for energy efficient buildings with enhanced thermal and mechanical properties.
Highlights
The use of solar energy has become a promising method to reach energy efficient solutions throughout the last century
Microencapsulated Phase change materials (PCM) have been used in many researches to enhance the thermal performance of building materials (Barreneche et al, 2013; Arce et al, 2012; Thiele et al, 2015, Su et al, 2012; Borreguero et al 2014; Li et al, 2019; Tuncel and Pekmezci, 2018)
The ratio of PCM, leads to a change in the thermal conductivity values, this change is not significant when evaluated from the viewpoint of heat insulation
Summary
The use of solar energy has become a promising method to reach energy efficient solutions throughout the last century. With PCMs, it is possible to store high amount of energy in order to control the heat fluctuations in the indoor environment and to increase comfort (Mehling and Cabeza, 2008; Souayfane et al, 2016). When the ambient temperature rises above the melting temperature of the PCMs, the PCM performs a phase conversion from solid to liquid During this conversion heat accumulates at high temperatures. It solidifies when the temperature falls below the melting temperature of the ambient temperature and releases the stored heat This process prevents high fluctuations in ambient temperature. There is a common conclusion on the success of the PCMs on thermal performance enhancement, their effects on the mechanical properties of the building materials which they are integrated in, still need further examination for reliable applications
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