Preparation and Characterization of Novel Plaster with Improved Thermal Energy Storage Performance

Abstract

Thermal energy storage systems based on latent heat utilization represent a promising way to achieve building sustainability and energy efficiency. The application of phase change materials (PCMs) can substantially improve the thermal performance of building envelopes, decrease the energy consumption, and support the thermal comfort maintenance, especially during peak periods. On this account, the newly formed form-stable PCM (FSPCM) based on diatomite impregnated by dodecanol is used as an admixture for design of interior plasters with enhanced thermal storage capability. In this study, the effect of FSPCM admixture on functional properties of plasters enriched by 8, 16 and 24 wt.% is determined. On this account, the assessment of physical, thermal, hygric, and mechanical properties is done in order to correlate obtained results with applied FSPCM dosages. Achieved results reveal only a minor influence of applied FSPCM admixture on material properties when compared to negative impacts of commercially produced PCMs. The differential scanning calorimetry discloses variations of the phase change temperature, which ranging from 20.75 °C to 21.68 °C and the effective heat capacity increased up to 15.38 J/g accordingly to the applied FSPCM dosages.

Influence of Superabsorbent Polymers on Moisture Control in Building Interiors

“…The effect of applied SAP admixture on material porosity and pore size distribution was studied by mercury intrusion porosimetry (MIP) with the help of Pascal 140 and Pascal 440 porosimeters (Thermo Scientific, Waltham, Massachusetts, USA). At the evaluation of measured data, the circular cross-section of capillaries was assumed, whereas the mercury contact angle was 130° [34].…”

Clay Composites for Thermal Energy Storage: A Review

“…After the incorporation of the composite into the cement-lime plaster, the phase transition intervals shifted to 18.3 to 30.6 • C and 21.1 to 14.6 • C, respectively, whereas the LHS capacity reduced to 4.88 and 10.32 J/g (for the mixtures containing 8 and 16 wt% of the composite additive). Further, the same group studied the properties of plaster composition containing 8, 16, and 24 wt% of the dodecanol/diatomite composites [98]. The addition of 24 wt% to the plaster mixture improved the LHS capacity up to 15.38 J/g without a significant reduction in the mechanical performance of the plaster.…”

Functional Properties of SAP-Based Humidity Control Plasters

“…Such intentions complied with the increased efforts of scientists towards improvements in the thermal performance of building envelopes. In this sense, many research studies aimed at the investigation of thermal insulation walls, heat transfer in porous building materials, application of different material layers including insulation materials, or utilization of various admixtures including phase change materials were carried out on this account [2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

“…Highly porous materials were considered as potentially suitable admixtures to plasters and mortars by various researchers in order to access passive solutions for the abovementioned issue [27,28]. In particular, the lightweight Polymers 2021, 13, 2279 2 of 17 aggregates, such as perlite, charcoal, and vermiculite, became popular for the attempts to provide the required material performance [6,[29][30][31]. Notwithstanding, the effectiveness of these admixtures did not provide satisfactory results and only minor improvements were achieved.…”