ENHANCING PERFORMANCE OF BUILDING ELEMENTS WITH PHASE CHANGE MATERIALS FOR COOLING WITH AIR-BASED SYSTEMS

date: 30.03.2022

category: Sporočila za javnost

 

Researchers from the Laboratory for Heating, Sanitary and Solar Technology & Air-conditioning (LOSK) are in collaboration with the French institution Graduate School of Civil Environmental and Urban Engineering (ENTPE) explored the possibilities of storing night cold (anergy) to reduce energy use for air conditioning of buildings. The results of the study are published in the recognised Journal of Energy Storage (IF: 6,585).

Prefabricated buildings with poor thermal stability overheat quickly in summer, as building envelopes with already low heat capacity are often accompanied by a high proportion of glazing. In addition, heat waves are becoming more common in Europe and around the world. One of the answers to the topic of passive cooling of buildings is the combination of phase change materials (PCM) with building elements (roof, mezzanine structure, floor or wall), which increase the heat capacity of a building at a relatively small volume. PCM solidifies at night and thus accumulates cold, while during the day they melt and thus accumulate excess heat at room melting point.

Stritih

Figure: left - day cycle, right - night cycle

 

Authors: Eva Zavrl*, Mateja Dovjak**, Mohamed Elmankibi***, Uroš Stritih*

*University of Ljubljana, Faculty of Mechanical Engineering, Ljubljana, Slovenija

**University of Ljubljana, Faculty of Civil and Geodetic Engineering, Ljubljana, Slovenija

*** National School of State Public Works (ENTPE), France

Link to the article: https://doi.org/10.1016/j.est.2022.104461.

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