Preparation and thermal energy properties of paraffin/halloysite nanotube composite as form-stable phase change material

Zhang, Jiangshan; Zhang, Xiang; Wan, Yazhen; Mei, Dandan; Zhang, Bing

doi:10.1016/j.solener.2012.01.002

Cited by 86 publications

(22 citation statements)

References 39 publications

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“…Li et al used palygorskite to absorb capric-palmitic acid for the first time and synthesized formstable composites with storage capacity of 48 J·g −1 (Li et al, 2011a). Researchers prepared form-stable composites by using halloysite as an adsorbent for capric acid, paraffin, and stearic acid (Mei et al, 2011a,b;Zhang et al, 2012). Opal was exploited as a desirable carrier of organic PCM (i.e., binary paraffin blends) for thermal energy storage in…”

Section: Introductionmentioning

confidence: 99%

Kaolinite stabilized paraffin composite phase change materials for thermal energy storage

Ouyang

et al. 2015

Applied Clay Science

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Section: Introductionmentioning

confidence: 99%

Kaolinite stabilized paraffin composite phase change materials for thermal energy storage

Ouyang

et al. 2015

Applied Clay Science

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“…The most potential and practically useful method is to prepare form-stable composite PCMs12. The porous inorganic materials or silicate minerals have been used as supports to stabilized organic PCMs, such as porous silica131415, expanded perlite161718, attapulgite19, diatomite20, halloysite212223, montmorillonite or bentonite2425, and expanded vermiculite2627.…”

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confidence: 99%

Enhanced performance and interfacial investigation of mineral-based composite phase change materials for thermal energy storage

Ouyang

et al. 2013

Sci Rep

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A novel mineral-based composite phase change materials (PCMs) was prepared via vacuum impregnation method assisted with microwave-acid treatment of the graphite (G) and bentonite (B) mixture. Graphite and microwave-acid treated bentonite mixture (GBm) had more loading capacity and higher crystallinity of stearic acid (SA) in the SA/GBm composite. The SA/GBm composite showed an enhanced thermal storage capacity, latent heats for melting and freezing (84.64 and 84.14 J/g) was higher than those of SA/B sample (48.43 and 47.13 J/g, respectively). Addition of graphite was beneficial to the enhancement in thermal conductivity of the SA/GBm composite, which could reach 0.77 W/m K, 31% higher than SA/B and 196% than pure SA. Furthermore, atomic-level interfaces between SA and support surfaces were depicted, and the mechanism of enhanced thermal storage properties was in detail investigated.

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“…This limiting characteristic can be circumnavigated by adding heat transfer enhancers to the storage container and embedding the phase change material into it. Different HTE's have been investigated, such as metal foams [11], graphite matrix [12], adding of metal particles, encapsulating the phase change materials and by extending the heat transfer surface of the heat exchangers with fins [13] and short heat pipes [14]. Long heat pipes have also been suggested in thermal storage systems because of high heat transfer rates, and the heat is extracted over a larger distance especially during the critical solidification phase of the phase change material [6][7][8][9].…”

Section: Literature Studymentioning

confidence: 99%

Solar Thermal Energy Storage in Power Generation Using Phase Change Material with Heat Pipes and Fins to Enhance Heat Transfer

2015

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Phase change materials absorb or otherwise release heat at close to a constant temperature during its melting and solidification phases. This is a very sought after property in power generation, where a high temperature heat source is required within a narrow temperature range as heat input for the turbine. Solar tower technology provides a high temperature heat source, but unfortunately it is time dependent. A sufficient amount of this heat may be stored in a phase change storage system which can deliver dispatchable heat. In such a storage system the phase change material needs to be exposed to a sufficient heat transfer area to melt or solidify at sufficient rates. In this study this is achieved with heat pipes with metallic fins. The analysis of this design included testing an experimental module during heat absorption and heat removal cycles, as well as a numerical analysis to model the storage module. To determine the parameters for a specific phase change storage system in a high temperature solar tower application the validated numerical thermal response simulation is incorporated. Certain solar input conditions and load cases are applied to the phase change storage system model and the size and geometry of the solar thermal storage system are determined from this analysis.

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Preparation and thermal energy properties of paraffin/halloysite nanotube composite as form-stable phase change material

Cited by 86 publications

References 39 publications

Kaolinite stabilized paraffin composite phase change materials for thermal energy storage

Kaolinite stabilized paraffin composite phase change materials for thermal energy storage

Enhanced performance and interfacial investigation of mineral-based composite phase change materials for thermal energy storage

Solar Thermal Energy Storage in Power Generation Using Phase Change Material with Heat Pipes and Fins to Enhance Heat Transfer

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