Materials for Advanced Heat Storage in Buildings

Ostrý, Milan; Charvát, Pavel

doi:10.1016/j.proeng.2013.04.106

Cited by 30 publications

(23 citation statements)

References 11 publications

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“…Thermal energy storage (TES) consists in storing heat for a later use thus reducing the discrepancy between energy availability and demand with beneficial effects on thermal management processes [1][2][3]. TES systems currently find employment in many applications, such as in power generation systems [4,5] and in construction [6,7], applications where the need for thermal energy is considerable and varies noticeably on a daily and seasonal basis [8]. Thermal energy can be stored and released as sensible heat, through a thermochemical reaction, or as latent heat by using phase change materials (PCMs).…”

Section: Introductionmentioning

confidence: 99%

Multifunctional glass fiber/polyamide composites with thermal energy storage/release capability

Fredi¹,

Dorigato²,

Pegoretti³

2018

Express Polym. Lett.

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Abstract. Thermoplastic composite laminates with thermal energy storage (TES) capability were prepared by combining a glass fabric, a polyamide 12 (PA12) matrix and two different phase change materials (PCMs), i.e. a paraffinic wax microencapsulated in melamine-formaldehyde shells and a paraffin shape stabilized with carbon nanotubes. The melt flow index of the PA12/PCM blends decreased with the PCM concentration, especially in the systems with shape stabilized wax. Differential scanning calorimetry showed that, for the matrices with microcapsules, the values of enthalpy were approximately the 70% of the theoretical values, which was attributed to the fracture of some microcapsules. Nevertheless, most of the energy storage capability was preserved. On the other hand, much lower relative enthalpy values were measured on the composites with shape stabilized wax, due to a considerable paraffin leakage or degradation. The subsequent characterization of the glass fabric laminates highlighted that the fiber and void volume fractions were comparable for all the laminates except for that with the higher amount of shape stabilized wax, where the high viscosity of the matrix led to a low fiber volume fraction and higher void content. The mechanical properties of the laminates were only slightly impaired by PCM addition, while a more sensible drop of the elastic modulus, of the stress at break and of the interlaminar shear strength could be observed in the shape stabilized wax systems.

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Section: Introductionmentioning

confidence: 99%

Multifunctional glass fiber/polyamide composites with thermal energy storage/release capability

Fredi¹,

Dorigato²,

Pegoretti³

2018

Express Polym. Lett.

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“…90 The last approach is the most suitable for PCMs integration in surface layers of building 91 structures therefore integration of PCMs in the form of microcapsules represents technology with 92 wide potential in building practice. The purpose of using microencapsulation in building 93 applications is likely to protect sensitive materials from their environment, to make active 94 materials easier and/or safer and to handle to reduce reactivity and to improve thermal properties For especially passive building applications the melting point of the PCM has to be near the 143 comfort zone. In the parametric study by , it was shown that phase change 144 temperature for maximum energy flux reduction was equal to the desired indoor temperature 145 regardless of the climate conditions [15].…”

mentioning

confidence: 99%

Review on using microencapsulated phase change materials (PCM) in building applications

Konuklu

Ostrý

Paksoy

et al. 2015

Energy and Buildings

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334

139

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“…The price-performance comparison has been used in various areas of research. For example, Esfe et al [17] compared the price and performance of three nanofluids SWCNT-MgO EG, SWCNT EG and MgO EG for thermal conductivity enhancement. No calculation was done in the referred article, as the comparison was done via chart where no exact numerical was visible.…”

Section: K Value (Price-performance Coefficient) Calculationmentioning

confidence: 99%

Cost/Performance Analysis of Commercial-Grade Organic Phase-Change Materials for Low-Temperature Heat Storage

et al. 2019

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Alkanes are widely used as phase change materials (PCMs), especially for thermal energy storage (TES), due to their high thermal capacity, stability, availability, and non-corrosiveness. However, the drawbacks of alkanes are low heat conductivity and high cost. Our aim was to explore alternative organic PCMs for TES and to compare such compounds based on the relationship between their performance and cost. For this purpose, we analysed several commercially available products, including long chain alkanes, alcohols, monocarboxylic acid, amines, ethers and esters in high purities. Differential scanning calorimetry and thermogravimetry (DSC and TGA) were used to measure the melting point, melting enthalpy and thermal stability of these compounds. The materials were classified according to their melting temperature. In order to compare the compounds, we calculated from the measured enthalpies and the price list provided by producers a coefficient that represents factors in both the performance and cost of the material. This method was used to identify the most suitable organic compound for thermal energy storage in each temperature range. As the main result of this work, it has been revealed that various organic compounds can be considered as a vital alternative to the alkanes in temperatures from −10 to 50 °C. On top of that, alcohols and carboxylic acids can cover the temperature range from 50 to 75 °C, which cannot be covered by alkanes.

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Materials for Advanced Heat Storage in Buildings

Cited by 30 publications

References 11 publications

Multifunctional glass fiber/polyamide composites with thermal energy storage/release capability

Multifunctional glass fiber/polyamide composites with thermal energy storage/release capability

Review on using microencapsulated phase change materials (PCM) in building applications

Cost/Performance Analysis of Commercial-Grade Organic Phase-Change Materials for Low-Temperature Heat Storage

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