Thermal properties of smart microencapsulated paraffin/plaster composites for the thermal regulation of buildings

Direct Incorporation of Butyl Stearate as Phase Change Material into Concrete for Energy Saving in Buildings

“…As the PCMs are continuously subjected to change phase from solid to liquid in solar cycles during the day, they need to be kept in containers. In building integrated latent heat storage applications, PCMs can be contained in a porous construction material such as concrete [5], gypsum [6], plasters [7], brick holes [8], textured finishes etc.…”

Numerical assessment of brick walls` use incorporating a phase change material towards thermal performance in buildings during a passive cooling strategy

“…Before performing the numerical simulations via governing equations resolution, the following conjectures were made to simplify as follows: The heat transfer is 1-D, and end effects are neglected; All wall system layers are homogenous and isotropic; The microcapsules are uniformly distributed inside the mortar; The thermophysical properties are constant, although different in liquid and solid phases, densities, heat capacities and thermal conductivities are assumed to be time and temperature independent [7]; Horizontal walls are assumed to be insulated; Interfacial resistances are negligible; Natural convection and radiation heat transfer in the material are skipped; The melting point, freezing point and latent heat are constant.…”

“…It should be to point out that the PCM micro-encapsulation technology is increasingly used because of its ability to avoid leakage and to prevent forthright contact between the PCM and the building material. Although much researches have been conducted in recent years on such a topic [7][8][9][10][11], works on PCM incorporation in building bricks have been seldom addressed, yet widely used in mediterranean countries. Wherefore, this study aims to demonstrate the PCM integration concept in these typical constructions.…”

“…Since phase change problems are arduous, the enthalpy-based approach is increasingly adopted when seeking to solve them numerically. The objective of this work is twofold: to implement such an approach while validating it by comparison with experimental results of the guarded hot plates method [7], and to demonstrate the potential incorporation of the PCM into as a passive solution by reducing peak temperatures and smoothing out daily fluctuations in indoor space, which, in turn, would save lot of cooling energy.…”

A new experimental device and inverse method to characterize thermal properties of composite phase change materials

“…On their side, Franquet et al [8] characterizes thermophysical properties of a cement mortar containing a phase change material. Recently PCM composite characterization was performed by Karkri et al [9][10][11][12][13][14][15][16] using two different experimental techniques: thermal energy storage properties, such as latent heat and heat capacities, were investigated using a Transient Guarded Hot Plate Technique (TGHPT), whereas thermal conductivities and diffusivities were measured using a periodic temperature method.…”