Alternative experimental characterization of phase change material plasterboard using two-step temperature ramping technique

Baccega, Eleonora; Bottarelli, Michele; Su, Yuehong

doi:10.1016/j.enbuild.2022.112153

Cited by 4 publications

(3 citation statements)

References 35 publications

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“…The uncertainties affecting the experimental data are determined thanks to the accuracy of the measuring instruments for the directly measured physical quantities or by using Equation ( 12) for the indirect ones [68].…”

Section: Uncertainties Estimationmentioning

confidence: 99%

Design of a Ventilated Façade Integrating a Luminescent Solar Concentrator Photovoltaic Panel

et al. 2023

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The increasing trend towards decarbonization requires the reduction of the environmental impact of the building sector that currently accounts for approximately 40% of the total CO2 emissions of European countries. Even though Luminescent Solar Concentrator (LSC) panels could be a very promising technology to be installed in urban environments, there is still little implementation of LSC panels in building façades. Here, the realization of a Ventilated Façade (VF) integrating an LSC device as an external pane is presented and a preliminary numerical and experimental investigation is used to evaluate the interaction between the different structure components. Thanks to the realization of a dedicated mock-up finite element method, models are calibrated and validated against experimental measurements, showing a good correspondence between simulated and measured data. Moreover, the electrical characterization of the LSC panel confirms that large area devices can be used as an external skin of VF, reporting a photovoltaic efficiency of 0.5%. The system’s thermal and optical properties (estimated thanks to the software COMSOL Multiphysics) encourage the continuation of the research by considering different technologies for the VF internal skin, by scaling up the case study, and by running the simulation of an entire building considering winter and summer energy demands.

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Section: Uncertainties Estimationmentioning

confidence: 99%

Design of a Ventilated Façade Integrating a Luminescent Solar Concentrator Photovoltaic Panel

et al. 2023

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“…1(b). The thermo-physical properties were estimated following the methodology previously reported in [29]: the thermal conductivity was estimated through a steady-state test while the speci c and latent heat were estimated through a two-step ramp unsteady-state test, as shown in Fig. 2.…”

Section: Thermo-physical Properties Estimationmentioning

confidence: 99%

“…Through the customised set up realised at the University of Ferrara [29], the experimental characterisation of two PCM-enhanced plasters was carried out, followed then by the thermo-physical properties validation against experimental data gathered under real outdoor conditions. The PCMs used have phase change temperatures of 27°C and 28°C, and are hereafter named TK27 and AS28, respectively.…”

Section: Borreguero Et Almentioning

confidence: 99%

Thermo-physical Characterisation of Plasters Containing Phase Change Materials (PCMs)

Baccega

2023

Preprint

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Phase change materials (PCMs) added into building materials largely demonstrated their effect in improving the overall thermal capacity, thus contributing to the reduction of the energy demand for heating and/or cooling. Knowing the thermo-physical properties of the enhanced materials is essential to maximize the achievable effect. The most used technique to do so is the Differential Scanning Calorimetry (DSC), but in case of inhomogeneous materials this method turns out to be poorly reliable, mainly due to the small amount of material usually needed to carry out the test. To overcome the main limitations, an alternative set up was realized, which allowed the characterization of different plaster samples enhanced with granular PCM. More specifically, plasters enhanced with 10% by mass of two different PCMs with melting temperatures of 28°C and 27°C, respectively, were considered. At first, a steady-state test was conducted and constant thermal gradients were maintained through which the thermal conductivity of the materials used was estimated. Then, an unsteady-state test was conducted through which the specific heat and the latent heat were estimated, showing a good agreement with values provided by the PCM suppliers. The estimated properties were then validated against experimental data acquired during the monitoring activity under real outdoor conditions of different wall samples on which the PCM-enhanced plasters were applied. With the estimated properties, RMSE values were lower than 1°C for temperatures and lower than 2.50 W/m2 for heat fluxes.

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Thermo-physical Characterisation of Plasters Containing Phase Change Materials (PCMs)

Baccega

2024

Int J Thermophys

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The integration of phase change materials (PCMs) within building materials is an interesting strategy to improve the thermal performance of buildings, thus reducing the energy demand for heating and/or cooling. To do so, the thermo-physical characterisation of the new enhanced materials is of outmost importance which, however, is difficult to carry out due to several limitations related to the most used techniques. To overcome these, a new alternative set up was realized, which allowed the thermo-physical characterization of different plaster samples enhanced with granular organic PCM. A steady-state test was conducted maintaining constant thermal gradients through which the thermal conductivity of the materials used was estimated. Then, a two-step ramp unsteady-state test was conducted through which the specific heat and the latent heat were estimated, showing a good agreement with values provided by the PCM suppliers. The estimated properties were then validated against experimental data acquired during the monitoring activity under real outdoor conditions of different wall samples on which the PCM-enhanced plasters were applied. With the estimated properties, RMSE values were lower than 1 °C for temperatures and lower than 2.50 W·m−2 for heat fluxes.

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Alternative experimental characterization of phase change material plasterboard using two-step temperature ramping technique

Cited by 4 publications

References 35 publications

Design of a Ventilated Façade Integrating a Luminescent Solar Concentrator Photovoltaic Panel

Design of a Ventilated Façade Integrating a Luminescent Solar Concentrator Photovoltaic Panel

Thermo-physical Characterisation of Plasters Containing Phase Change Materials (PCMs)

Thermo-physical Characterisation of Plasters Containing Phase Change Materials (PCMs)

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