Hygrothermal Performance of Thick Pcm Mortar Behind Pv Panel in Energy Activated Etics Facade

Talvik, Martin; Ilomets, Simo; Klõšeiko, Paul; Kalamees, Targo; Põldaru, Mattias; Heim, Dariusz

doi:10.2139/ssrn.4375830

Cited by 2 publications

(8 citation statements)

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“…As waterproof MC4 connectors were used to make the connections, no special junction box was needed. The exact building process and detailing of the solution has been described before, in [16].…”

Section: Test Wall In Climate Chambermentioning

confidence: 99%

“…Moreover, volumetric moisture content inside the PCM mortar was measured with EC-5 soil moisture sensors [25]. The sensors were calibrated specifically for measuring this PCM mortar, as the result of several small-scale experiments and formulas for calculating volumetric moisture content with temperature corrections [16].…”

Section: Sensors Used For Measurementmentioning

confidence: 99%

“…The hygrothermal properties of the particular facade plaster system used in the experiment were previously measured at the Tallinn University of Technology [33]. Properties of the PCM composite mortar (made from PCM granules and cement filling) were measured both at Tallinn University of Technology and Lodz University of Technology [16].…”

Section: Hygrothermal Simulationsmentioning

confidence: 99%

“…However, applying a vapour-tight layer on the outermost side of the facade creates a situation in colder climates where moisture is not able to get out of the wall via diffusion in the same way it does in the case of traditional ETICS. This problem was identified and analysed numerically in [15]. A solution utilising diffusion gaps connected to the outside environment between a pair of steel sheets at the lower part of the PV has been proposed and developed [16].…”

Section: Introductionmentioning

confidence: 99%

“…This problem was identified and analysed numerically in [15]. A solution utilising diffusion gaps connected to the outside environment between a pair of steel sheets at the lower part of the PV has been proposed and developed [16]. However, the overall hygrothermal performance of this solution has not been studied before, except for the initial drying-out process of PCM mortar just after the application [16].…”

Section: Introductionmentioning

confidence: 99%

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Hygrothermal Performance of Thick PCM Mortar behind PV Panels in Energy-Activated ETICS Facades

et al. 2023

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The concept of integrating PV panels into traditional ETICS facades has been developing for several years. Problems concerning the options for passively controlling the temperatures of PV panels with PCM and directing excess moisture out of the wall via diffusion channels have been previously studied theoretically. During this study, real wall-scale experiments were conducted to test the thermal and hygrothermal performance of the wall system in an extreme climatic environment, as well as in a real outdoor environment in Tallinn, Estonia. Finally, a simulation model was calibrated according to the measured data. It was found that in case of test walls with diffusion channels, it was possible to keep the moisture content of PCM mortar under 0.11 m3/m3. Excess water drained out via channels leading to the external environment. Without diffusion channels, the moisture content rose as high as 0.18 m3/m3. Both the experiments and hygrothermal modelling showed that the high moisture content of PCM mortar, caused by water leakage, dropped to 0.08 m3/m3 over 10 solar cycles as moisture escaped via the diffusion channels. PCM mortar with a moisture content of 0.08 m3/m3 endured extreme rain and freeze-thaw cycles without visual damage, and PV panels retained their electrical production capabilities.

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Section: Test Wall In Climate Chambermentioning

confidence: 99%

Section: Sensors Used For Measurementmentioning

confidence: 99%