Regarding energy, sustainable society, and the need for a green transition, we face a
problem for the future, namely, we have a major problem with the consumption of fossil
fuels and electricity for operating air conditioning and heating, which can be solved by
replacing them with energy storage materials. The most suitable would be materials for
latent energy storage. We closely link modern concretes for achieving energy-efficient
buildings with the addition of phase-change materials (PCM) to concrete. We are
focusing on adding organic phase – change inert materials to concrete. We have three
types of PCM materials. Organic, inorganic, and salts or eutectic mixtures. Organic PCM
materials, such as waxes or paraffins, which have a melting point in the temperature range
of indoor spaces of buildings, would be suitable. These could be encapsulated, i.e.,
packaged in hollow balls with a polyamide sleeve. Organic materials are flammable, so
we must be aware of the behavior of the material and the release of various gases in the
event of a fire.
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