A novel paraffin/expanded perlite composite phase change material for prevention of PCM leakage in cementitious composites

Ramakrishnan, Sayanthan; Wang, Xiaoming; Alam, Morshed; Wilson, John L.

doi:10.1016/j.apenergy.2015.08.019

Cited by 255 publications

(74 citation statements)

References 32 publications

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“…However, materials with simple physical complex are still prone to leakage phenomenon. For instance, Li et al and Ramakrishnan et al discovered a serious leakage of paraffin when the paraffin/diatomite composite was used in practical application . As desired, the materials with semi‐IPN in this study significantly maintained the solid state even after 100 times melt/freeze cycles (Figure ).…”

Section: Resultssupporting

confidence: 56%

Novel semi‐interpenetrating network structural phase change composites with high phase change enthalpy

et al. 2017

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High phase change enthalpy, controllable temperature, and stable shape can expand the application of phase change materials (PCMs) in energy storage. In this study, a series of novel form-stable PCMs with high phase change enthalpy (169-195 J/g) and controllable temperature (45.3-61.48C) were prepared. The PCMs exhibited a semi-interpenetrating polymer network (semi-IPN) structure resulting from the combination of polyethylene glycol (PEG) and a threedimensional (3-D) network gel. The gel itself featured an inherent phase change characteristic and a 3-D network structure. Thus, it improved the phase transition enthalpy of the materials and facilitated the formation of a semi-IPN that endowed the materials with excellent form-stable properties. In addition, the latent heat of the composites (169-195 J/g) is much higher than most of the previously reported composites using PEG as phase change component (68-132 J/g).

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Section: Resultssupporting

confidence: 56%

Novel semi‐interpenetrating network structural phase change composites with high phase change enthalpy

et al. 2017

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“…efficient supporting materials to remain the shape stabilization of PCMs during the phase change process. Many materials have been developed to serve as supporting materials, such as expanded perlite [20], diatomite [21], bentonite [22], vermiculite [23], expand graphite [24], polymethyl methacrylate (PMMA) [25], high-density polyethylene (HDPE) [26], poly(melamine-formaldehyde) [27] and so on.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of polyethylene glycol based semi-interpenetrating polymer network as novel form-stable phase change materials for thermal energy storage

Liu

Zhang

et al. 2016

Energy and Buildings

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“…The release of paraffin wax into the surrounding matrix was assumed to be responsible for the loss of strength. Real size concrete cubicles, for analyzing the improved thermal inertia as well as the inner thermal comfort, were investigated by [82] considering M-PCMs with a melting point of 26 • C. In recent years, additional mixing techniques have been proposed using expanded perlite particles [83]. These porous materials are capable of absorbing paraffin PCMs and can be used in direct mixing.…”

Section: Experimental Investigations On Pcm-concretesmentioning

confidence: 99%

Reviewing Theoretical and Numerical Models for PCM-embedded Cementitious Composites

2018

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Accumulating solar and/or environmental heat in walls of apartment buildings or houses is a way to level-out daily temperature differences and significantly cut back on energy demands. A possible way to achieve this goal is by developing advanced composites that consist of porous cementitious materials with embedded phase change materials (PCMs) that have the potential to accumulate or liberate heat energy during a chemical phase change from liquid to solid, or vice versa. This paper aims to report the current state of art on numerical and theoretical approaches available in the scientific literature for modelling the thermal behavior and heat accumulation/liberation of PCMs employed in cement-based composites. The work focuses on reviewing numerical tools for modelling phase change problems while emphasizing the so-called Stefan problem, or particularly, on the numerical techniques available for solving it. In this research field, it is the fixed grid method that is the most commonly and practically applied approach. After this, a discussion on the modelling procedures available for schematizing cementitious composites with embedded PCMs is reported.

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A novel paraffin/expanded perlite composite phase change material for prevention of PCM leakage in cementitious composites

Cited by 255 publications

References 32 publications

Novel semi‐interpenetrating network structural phase change composites with high phase change enthalpy

Novel semi‐interpenetrating network structural phase change composites with high phase change enthalpy

Preparation and properties of polyethylene glycol based semi-interpenetrating polymer network as novel form-stable phase change materials for thermal energy storage

Reviewing Theoretical and Numerical Models for PCM-embedded Cementitious Composites

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