Treatment of natural stones with Phase Change Materials: Experiments and computational approaches

Romero-Sánchez, Marı́a D.; Guillem-López, C.; López-Buendía, Ángel M.; Stamatiadou, M.; Mandilaras, Ioannis D.; Katsourinis, Dimitrios; Founti, M.

doi:10.1016/j.applthermaleng.2012.05.017

Cited by 21 publications

(15 citation statements)

References 14 publications

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“…Examples of experimental projects supported by the numerical performance analysis can be found in Katsourinis et al (2010) and Romero-Sánchez et al (2012). They used PCMs for thermal enhancement of a natural stone in order to improve its thermal performance as a building material.…”

Section: Numerical Research Studies Of Pcm-enhanced Building Productsmentioning

confidence: 98%

Thermal and Energy Modeling of PCM-Enhanced Building Envelopes

Kośny

2015

Engineering Materials and Processes

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Energy storage in building envelopes can be accomplished by means of sensible and latent heat accumulation. Latent heat storage using PCMs has been the focus of multiple building studies, due to its relatively high thermal energy storage capacity per volume, compared to sensible storage available in conventional construction materials. PCM-enhanced building envelopes are widely considered as a prospective building enclosure technology which can help in the near future in peak-hour load reductions and cutting of HVAC energy consumption. Currently, there is a great variety of commercially available PCM products that vary in PCM types (salts, paraffins, fatty acids, etc.) and in packaging and encapsulation options (i.e., PCM pouches, containers, macro-and microencapsulation). In addition, PCMs can be differentiated based on their melting temperatures, which together with PCM location and its quantity, are essential for designing of PCM building envelope applications.Most typically, PCMs used in building envelope applications, need to go through a complete phase transition during 24-h time periods in order to be fully effective. This is why it is critical that the temperature in the location where PCM is installed fluctuates (possibly daily) above and below the PCM functional temperature range. As depicted in Fig. 6.1, the PCM functional temperature range starts usually at the lowest temperature limit of the solidification process. Similarly, it ends at the highest temperature of the melting process.Ideally, the entire heat transported should be available at approximately the same temperature for both, melting and solidification processes. However, in real live, this situation only occurs for the paraffinic PCMs. That is why, for well-designed PCM systems, it is crucial that this temperature range be as narrow as possible. One of the complications is an existence of the temperature hysteresis between PCM melting and solidification. Figure 6.1 depicts a situation when the melting point of a PCM-enhanced material is well above its solidification point. In addition, in most of inorganic and some organic PCMs the supercooling effect can be observed.

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Section: Numerical Research Studies Of Pcm-enhanced Building Productsmentioning

confidence: 98%

Thermal and Energy Modeling of PCM-Enhanced Building Envelopes

Kośny

2015

Engineering Materials and Processes

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“…4 Several research studies focused on the natural stone impregnated with PCM have been performed in southern Europe. Examples of experimental projects supported by the numerical performance analysis can be found in Katsourinis et al (2010) and Romero-Sánchez et al (2012). They used PCMs for thermal enhancement of a natural stone in order to improve its thermal performance as a building material.…”

Section: Numerical Research Studies Of Pcm-enhanced Building Productsmentioning

confidence: 99%

PCM-Enhanced Building Components

Kośny

2015

Engineering Materials and Processes

103

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“…30 In this context, the aim of the current study was to numerically evaluate the thermal behaviour of a purposely built, full-scale lightweight building combining a hybrid steel frame with dry wall systems incorporating PCMs, using a dedicated simulation tool, based on a validated coupled TRNSYS and MATLAB solver. 13 The analysis of the monitoring data of the building, reported by Mandilaras et al, 29 established the effects of the activation of the PCM. A more accurate investigation of the PCM effect on the thermal behaviour of the building was carried out numerically by this study, focusing on the annual cooling loads.…”

Section: Introductionmentioning

confidence: 99%

Computational assessment of a full-scale Mediterranean building incorporating wallboards with phase change materials

Stamatiadou

Katsourinis

Founti

2016

Indoor and Built Environment

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In this study, a lightweight residential building in Greece was investigated, focusing on the summer comfort when wallboards with phase change materials (PCM) were installed in the external and internal walls. The effectiveness of the PCM wallboards installed was numerically assessed, while the energy performance of the building was examined, in order to quantify the effect of PCM in the annual cooling load needs, as a way of saving energy. Potential bigger energy savings were evaluated by defining the appropriate PCM melting temperature range and the 'energy-conscious' occupant behaviour (passive vs. active). Results were expressed in terms of percentage savings of cooling loads and with comparison to wall elements incorporated with plain gypsumboards instead of the PCM wallboards. The optimum phase change temperature change for the specific location was investigated by examining two-phase change transition temperatures of the PCM wallboards (PCM24 and PCM26 respectively). The use of PCM24 produced a 29% reduction of annual cooling loads, compared to 16% reduction produced by PCM26. Five scenarios were also examined, showing the behaviour of the PCM which was enhanced when a cooling system was installed. The cooling needs were lowered by an average of 25.7%, compared to the respective no-PCM scenarios.

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Treatment of natural stones with Phase Change Materials: Experiments and computational approaches

Cited by 21 publications

References 14 publications

Thermal and Energy Modeling of PCM-Enhanced Building Envelopes

Thermal and Energy Modeling of PCM-Enhanced Building Envelopes

PCM-Enhanced Building Components

Computational assessment of a full-scale Mediterranean building incorporating wallboards with phase change materials

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