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  • Phase-changing materials for thermal stabilization of buildings [Elektronski vir]
    Krašna, Marjan ; Kralj, Samo
    In a temperature driven thermodynamic first order (discontinuous) phase transition the latent heat is released (absorbed) on entering (exiting) the low temperature phase. This mechanism could be ... exploited for thermal stabilization of buildings. In the simplest case one would need a layer coating a building, containing a phase-changing material with the phase transition temperature Tc in the regime of ambient temperatures. In the paper we present theoretical analysis, suggests how one can tune Tc to a desired value. For this purpose a material exhibiting a continuous symmetry breaking phase transition is needed. The symmetry breaking phase is then characterized by an amplitude and gauge component of the relevant order parameter characterizing the transition. We demonstrate, that by imposing a distortion to the gauge component on a characteristic length scale R, one could control Tc by varying the strength of distortions. We demonstrate what geometrical and material properties are needed for an efficient phase-changing material for thermal stabilization at ambient temperatures.
    Source: Energy efficiency [Elektronski vir] : (conference proceedings) (Str. 37-43)
    Type of material - conference contribution ; adult, serious
    Publish date - 2017
    Language - english
    COBISS.SI-ID - 23314440

    Link(s):

    http://press.um.si/index.php/ump/catalog/book/241
    DOI

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