Wood-based composite phase change materials with self-cleaning superhydrophobic surface for thermal energy storage

Yang, Haiyue; Wang, Siyuan; Wang, Xin; Chao, Weixiang; Wang, Nan; Ding, Xiaolun; Liu, Feng; Yu, Qianqian; Yang, Tinghan; Yang, Zhaolin; Li, Jian; Wang, Chengyu; Li, Guoliang

doi:10.1016/j.apenergy.2019.114481

Cited by 110 publications

(49 citation statements)

References 26 publications

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“…However, in the melting process, because the temperature of the solid-metastable solid and metastable solid-liquid transition is very close and indistinguishable, there is only one peak. 13 It can be found that when the shell concentration is constant, as the core feed rate increases, the latent heat deceleration of the fiber augments and finally reaches the peak value, which means the maximum encapsulation rate under this condition. For example, at the concentration of 26 wt%, the variation of latent heat is inconsistent with the core feed rate.…”

Section: Resultsmentioning

confidence: 91%

“…A typical organic solid-liquid PCM, 1-tetradecanol (TD), exhibiting remarkable properties, such as, high latent heat, non-toxic, non-corrosive, and good thermal stability. 13,14 Moreover, the phase transition temperature of TD is close to the human body temperature, which is very suitable for the application of smart textiles. Nevertheless, like other solid-liquid PCMs, TD will inevitably leak into the surrounding environment during the repeated cycles of melting and cooling, which shorten its usable life.…”

Section: Introductionmentioning

confidence: 96%

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Reversibly thermochromic and high strength core‐shell nanofibers fabricated by melt coaxial electrospinning

Wang

Fang

et al. 2021

J of Applied Polymer Sci

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Recent years, phase change materials (PCMs) with potential to store and transform energy have attracted broad attention, especially in the field of thermal energy storage. However, the instability and leak proneness of PCMs limit their universal application. In this paper, core-shell fibers with 1-tetradecanol (TD) as core and poly(vinylidene fluoride) (PVDF) as shell were prepared via melt coaxial electrospinning method, and for improvement, the dye composed of crystal violet lactone (CVL) and bisphenol A (BPA) was added to the core to endow the fiber the function of reversible thermochromism. During the preparation process, it was found that the addition of NaCl could regulate the fiber morphology and strength its mechanical property. By adjusting the concentration of shell solution and the flow rate of core solution, the high-strength reversible thermochromic fibers were produced when polymer concentration was 24 wt% with a core feed rate of 0.4 ml/h. The latent heat of these fibers is up to 88.71 J/g. Besides, its color can change from blue to white when heated, and the transition temperature is around 38 C. And 100 thermal cycle tests of the fiber showed its strong thermal stability and thermochromic property.

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Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 96%

Reversibly thermochromic and high strength core‐shell nanofibers fabricated by melt coaxial electrospinning

Wang

Fang

et al. 2021

J of Applied Polymer Sci

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“…Figure 8 showed the TG/DTA curves for wood, CA‐SA eutectic mixture, and wood/CA‐SA composite. Both original wood and wood/CA‐SA demonstrated initial weight loss between 29°C and 100°C due to evaporation of water and volatile material 51 …”

Section: Resultsmentioning

confidence: 99%

“…Both original wood and wood/CA-SA demonstrated initial weight loss between 29 C and 100 C due to evaporation of water and volatile material. 51 Faster weight loss for wood/CA-SA composite corresponds to the evaporation of PCM from the composite sample. Hemicellulose usually degrades between 100 C and 365 C while the cellulose decomposes at slightly higher temperature range, between 270 C and 400 C. 52 Rapid thermal decomposition was observed at 203 C for the wood sample as shown by the DTA curve.…”

Section: Tes Properties Of Pcmimpregnated Woodmentioning

confidence: 99%

Phase change material impregnated wood for passive thermal management of timber buildings

et al. 2020

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The Scots pine (Pinus sylvestris L.) sapwood was impregnated with the eutectic mixture of capric acid (CA) and stearic acid (SA) as phase change material (PCM) via vacuum process for passive thermoregulation in timber buildings. The hygroscopic properties, mechanical properties, thermal energy storage (TES) characteristics and lab-scale thermo-regulative performance of wood/ CA-SA composite were evaluated. The produced composite from PCM was morphologically and physico-chemically characterized by SEM, FT-IR and XRD analysis. Thermal energy storage (TES) properties, cycling chemical/thermal reliability, and thermal degradation stability of the produced composite were determined by TG/DTA and DSC analysis. The hygroscopic tests revealed that the wood/CA-SA composite showed low water absorption (WA) and high anti-swelling efficiency (ASE) after 264 hours in water. Wood treatment with CA-SA increased the bending and compression strength of wood. TG/DTA data demonstrated that the wood/CA-SA composite left higher residue of 10.31% at 800 C than that of wood with 6.87%. The DSC measurements showed that the obtained wood/CA-SA composite had a good TES capacity of about 94 J/g at 23.94 C. The cycling DSC results confirmed the eutectic PCM in wood indicated high chemical stability and storage/release reliability even though it was run 600 times melt/freeze. According to thermal performance test, the wood/CA-SA composite has ability of storing excess heat in the environment and preventing the heat flow to the environment. It can be concluded that the fabricated wood/CA-SA composite can be used for indoor temperature regulation and energy saving in timber buildings.

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“…The utilization of phase change materials (PCMs) as latent thermal energy are ideal for thermal management and storage, due to their capacity to absorb, store and release latent heat during the phase transition (Yang et al, 2020). PCMs offer considerable advantages, such as high thermal density and relatively constant phase transition temperature during the melting and solidification process.…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of Thermal Energy Storage (TES) with Phase Change Materials (PCM) for Ceiling Tile Applications

Velasco-Carrasco

Chen

Aguilar-Santana

et al. 2020

Future Cities and Environment

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Wood-based composite phase change materials with self-cleaning superhydrophobic surface for thermal energy storage

Cited by 110 publications

References 26 publications

Reversibly thermochromic and high strength core‐shell nanofibers fabricated by melt coaxial electrospinning

Reversibly thermochromic and high strength core‐shell nanofibers fabricated by melt coaxial electrospinning

Phase change material impregnated wood for passive thermal management of timber buildings

Experimental Evaluation of Thermal Energy Storage (TES) with Phase Change Materials (PCM) for Ceiling Tile Applications

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