Thermal behavior of a hybrid PCM/plaster: A numerical and experimental investigation

Lachheb, Mohamed; Younsi, Zohir; Naji, Hassane; Karkri, Mustapha; Nasrallah, Sassi Ben

doi:10.1016/j.applthermaleng.2016.09.083

Cited by 86 publications

(34 citation statements)

References 38 publications

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“…Several studies have been carried out to evaluate the thermal performance of PCM-enhanced elements by considering different scales of the samples. For instance, a transient GHP method based on heat flux and temperature measurements was used by Lachheb et al [200] for the experimental assessment of the thermal behavior of a plaster composite containing a microencapsulated PCM. Amaral et al [201] evaluated the thermal conductivity of rigid polyurethane (RPU) foams, with and without PCMs, based on steady-state and transient methods ( Figure 11).…”

Section: Pcm-enhanced Elementsmentioning

confidence: 99%

Laboratory and in-situ non-destructive methods to evaluate the thermal transmittance and behavior of walls, windows, and construction elements with innovative materials: A review

Soares

Martins

Gonçalves

et al. 2019

Energy and Buildings

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The experimental characterization of the overall thermal transmittance of homogeneous, moderately-and non-homogeneous walls, windows, and construction elements with innovative materials is very important to predict their thermal performance. It is also important to evaluate if the standard calculation methods to estimate the U-value of new and existing walls can be applied to more complex configurations, since the correct estimation of this value is a critical requirement when performing building energy simulations or energy audit. This paper provides a survey on the main methods to measure the thermal transmittance and thermal behaviour of construction elements, considering laboratory conditions and in-situ non-destructive measurements. Five methods are described: the heat flow meter (HFM); the guarded hot plate (GHP); the hot box (HB), considering the guarded HB (GHB) and the calibrated HB (CHB); and the infrared thermography (IRT). Then, previous studies dedicated to the assessment of the thermal performance of different heavy-and light-weight walls are discussed. Particular attention is devoted to the measurement of the U-value of nonhomogeneous walls, including the effect of thermal bridging caused by steel framing or mortar joints, and the presence of PCMs or new insulation materials in the configuration of the walls. hot box; calibrated hot box; infrared thermography. Highlights: -Review on the main methods to measure the U-value of non-homogeneous walls. -Methods: heat flow meter, guarded hot plate, guarded and calibrated hot box, infrared thermography. -Standards framework and discussion of the main advantages and drawbacks of each method. -Description of methodologies and working principles of laboratory and in-situ measurements. -Measurement of the thermal transmittance of different heavy-and light-weight walls.

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Section: Pcm-enhanced Elementsmentioning

confidence: 99%

Laboratory and in-situ non-destructive methods to evaluate the thermal transmittance and behavior of walls, windows, and construction elements with innovative materials: A review

Soares

Martins

Gonçalves

et al. 2019

Energy and Buildings

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“…A lot of work has been done to use such kind of materials that are capable to store large amount of energy to meet the increasing energy demand in this sector. Researchers [77][78][79] have studied the thermal properties of synthesized form-stable HPCM for the building applications. They mainly focused to increase the latent heat storage capacity to store the thermal energy for later use.…”

Section: Discussionmentioning

confidence: 99%

“…The PCM can be integrated with the porous building clays like perlite [67][68][69], diatomite [41,[70][71][72][73], vermiculite [19,54], kaolin [74,75] and bentonite [76]. In this aspect Lachheb et al [77] studied the thermal behavior of hybrid micronal/plaster to minimize the energy demand in buildings. The composite prepared, was consisted of a plaster matrix having micro-encapsulated paraffin with 10% mass fraction.…”

Section: Thermal Comfort In Modern Buildingsmentioning

confidence: 99%

Thermal applications of hybrid phase change materials: A critical review

2020

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Phase change materials (PCM) with their high latent heat capacity have a great ability to store energy during their phase change process. The PCM are renowned for their applications in solar and thermal energy storage systems for the purpose of heating and cooling. However, one of the major drawbacks of PCM is their low thermal conductivity due to which their charging and discharging time reduces along with the reduction in energy storage capacity. This reduction in the energy storage capacity of PCM can be improved by producing organic-inorganic hybrid form-stable PCM, with the combination of two or more PCM together to increase their energy storage capacity. Nanoparticles that possess high thermal conductivity are also doped with these hybrid PCM (HPCM)to improve the effectiveness of thermal conductivity. This paper presents a short review on the applications of HPCM in energy storage and building application. Apart from this a short section of applications of composite PCM (CPCM) is also reviewed with discussions made at the end of each section. Results from the past literature depicted that the application of these HPCM and CPCM enhanced the energy storage capacity and thermal conductivity of the base PCM and selection of a proper hybrid material plays an essential role in their stability. It is presumed that this study will provide a sagacity, to the readers, to investigate their thermophysical properties and other essential applications.

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“…In particular, a set of possible optimal solutions were identified to maximize the indoor thermal comfort of the occupants for different external boundary conditions. To the same aim, numerical simulation was used in Ref to analyze the capability of phase change material (PCM) integrated in building envelope to maintain the building indoor thermal comfort by enhancing the TES of the wall and the roof. In particular, a numerical model based on a finite volume/enthalpy method has been implemented to study the effect of different parameters, that is, the wallboard thickness and mass fraction of the microencapsulated PCM on the building temperature regulation.…”

Section: Interaction Of Building Simulation With Other Thermal‐energymentioning

confidence: 99%

Uses of dynamic simulation to predict thermal‐energy performance of buildings and districts: a review

Castaldo

Pisello

2017

WIREs Energy & Environment

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The design of sustainable constructions also resilient to climate change has become a challenging issue given the increasing greenhouse emissions rate imputable to the built environment in urban areas. In this context, dynamic simulation models represent a suitable tool to support the design from very preliminary phases, since they allow an accurate prediction of the constructions requirements, their environmental performance, and indoor comfort conditions for their occupants. Therefore, starting from specific inputs, that is, weather conditions, construction technologies, materials, energy systems, operation settings, occupancy, and so forth, it is possible to estimate the realistic building energy performance. Moreover, the calibration procedures allow making the model even more representative of the field conditions of a construction. Given the massive progress carried out by the scientific community during the last decades, this paper presents a comprehensive review of the different building dynamic simulation approaches and available tools. While previous review studies focused on single separated aspects of dynamic simulations approaches, that is, calibration methods, software, simulation of single building energy systems, the aim of the present review is to propose a more holistic approach by investigating the recent scientific progress in simulating realistic dense urban environments. In this view, the review focus bridges the gap between the simulation at single-building level and simulation at the increasingly important neighborhood scale by showing the multiple benefits deriving from using dynamic simulation tools at district level, for a more reliable investigation of building performance in their urban context, where more than 50% of the global population worldwide currently lives.

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Thermal behavior of a hybrid PCM/plaster: A numerical and experimental investigation

Cited by 86 publications

References 38 publications

Laboratory and in-situ non-destructive methods to evaluate the thermal transmittance and behavior of walls, windows, and construction elements with innovative materials: A review

Laboratory and in-situ non-destructive methods to evaluate the thermal transmittance and behavior of walls, windows, and construction elements with innovative materials: A review

Thermal applications of hybrid phase change materials: A critical review

Uses of dynamic simulation to predict thermal‐energy performance of buildings and districts: a review

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