Lauric acid/intercalated kaolinite as form-stable phase change material for thermal energy storage

Song, Shaokun; Dong, Lijie; Zhang, Yang; Chen, Shun; Li, Qi; Guo, Yongsheng; Deng, Sufen; Si, Shubin; Xiong, Chuanxi

doi:10.1016/j.energy.2014.08.042

Cited by 121 publications

(36 citation statements)

References 37 publications

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“…4,5 Fatty acids and their mixtures have superior properties over the other investigated organic PCMs, such as high latent heat, low vapor pressure, no or less volume change during solid-liquid phase transition, low degree of supercooling, non-toxicity, and good thermal and chemical stability aer long-term utilisation. [6][7][8] Therefore, fatty acids have been extensively studied as promising PCMs for TES and have been applied in many areas such as solar energy applications, 9 construction and building engineering, 10 renewable energy saving applications 11 and so forth.…”

Section: Introductionmentioning

confidence: 99%

Preparation and thermal properties of crosslinked polyurethane/lauric acid composites as novel form stable phase change materials with a low degree of supercooling

Kong

Yuan

et al. 2017

RSC Adv.

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In this article, a series of crosslinked polyurethane/lauric acid composites was prepared as form stable phase change materials (FSPCMs) through a brief and solvent-free method. In the FSPCMs, lauric acid functioned as a phase change substance, and crosslinked polyurethane simultaneously functioned as a supporting material and phase change substance. Compared with traditional supporting materials in FSPCMs, the crosslinked polyurethane here obviously reduces the loss of latent heat from the supporting material and reduces the degree of supercooling of the obtained FSPCMs. The obtained FSPCMs were extensively studied by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), polarizing microscopy (POM), differential scanning calorimetry (DSC), thermal cycling tests and thermogravimetric analysis (TGA). The FTIR confirmed the chemical structure of the obtained FSPCMs. The XRD and POM results indicated that the FSPCMs exhibit comprehensive crystalline properties of polyurethane and lauric acid. DSC data showed that the FSPCMs have superior phase change properties with the phase change temperature and latent heat in the range of 26-38 C and 90-131 J g À1 . Moreover, low or no supercooling of the obtained FSPCMs was detected by DSC. The phase change temperature is suitable in the fields of solar energy saving and building engineering. Thermal cycling tests and thermogravimetric analysis (TGA) proved the good thermal reliability and stability of the obtained FSPCMs.

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Section: Introductionmentioning

confidence: 99%

Preparation and thermal properties of crosslinked polyurethane/lauric acid composites as novel form stable phase change materials with a low degree of supercooling

Kong

Yuan

et al. 2017

RSC Adv.

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“…Several studies have investigated the use of different types of PCMs applied in the context of buildings, such as: copolymer composite [4]; epoxy resin/paraffin spheres [5], tiles [6] plastering mortars [7], ceiling panels [8], bricks [9], shape-stabilized PCMs [10], etc.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical studies of hybrid PCM embedded in plastering mortar for enhanced thermal behaviour of buildings

Kheradmand

Azenha

Castro-Gomes

2016

Energy

136

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This paper proposes a methodology for improvement of energy efficiency in buildings through the innovative simultaneous incorporation of three distinct phase change materials (here termed as hybrid PCM) in plastering mortars for façade walls. The thermal performance of a hybrid PCM mortar was experimentally evaluated by comparing the behaviour of a prototype test cell (including hybrid PCM plastering mortar) subjected to realistic daily temperature profiles, with the behaviour of a similar prototype test cell, in which no PCM was added. A numerical simulation model was employed (using ANSYS-FLUENT) to validate the capacity of simulating temperature evolution within the prototype containing hybrid PCM, as well as to understand the contribution of hybrid PCM to energy efficiency. Incorporation of hybrid PCM into plastering mortars was found to have the potential to significantly reduce heating/cooling temperature demands for maintaining the interior temperature within comfort levels when compared to normal mortars (without PCM), or even mortars comprising a single type of PCM.

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“…Different compounding processes are used in the preparation of these composites, such as direct impregnation, vacuum impregnation, melting intercalation, solution intercalation, melting adsorption, and fusion adsorption …”

Section: Introductionmentioning

confidence: 99%

“…High-temperature calcination, 19 acid/alkali treatment, 20 ion exchange, 21 hydrothermal treatment, 22 and organic activation 21 are examples of such modifications. 6 Different compounding processes are used in the preparation of these composites, 6 such as direct impregnation, 3,10,11,23 vacuum impregnation, 24,25 melting intercalation, 26 solution intercalation, [27][28][29] melting adsorption, 12 and fusion adsorption. 30 Diatomite or diatomaceous earth is a naturally occurring, soft, siliceous sedimentary rock made up of the fossilized remains of tiny, aquatic organisms called diatoms.…”

Section: Introductionmentioning

confidence: 99%

Development of pentadecane/diatomite and pentadecane/sepiolite nanocomposites fabricated by different compounding methods for thermal energy storage

2019

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Summary Global warming is one of the most important consequences of excess energy consumption. Phase change materials (PCMs) have prominent advantages in thermal energy storage owing to their high latent heat capacities and small temperature variations during the phase change process. However, leakage is a major problem that limits the use of PCMs. Leakage may occur in encapsulated PCMs or in composites where the PCM is attached to the surface of a supporting material or within the pores of that material. In this study, pentadecane/diatomite and pentadecane/sepiolite nanocomposites were fabricated by using unmodified and microwave‐irradiated diatomite and sepiolite samples and by using different compounding processes, such as direct impregnation, vacuum impregnation, and ultrasonic‐assisted impregnation methods. The microstructures and the chemical and thermal properties of the composites were characterized by scanning electron microscopy, Fourier‐transform infrared spectroscopy, and differential scanning calorimetry. Subsequently, the thermal reliability and stability and the thermal conductivity of the PCM composites were also investigated. A melting temperature of 9.25°C and a latent heat capacity of 58.73 J/g were determined for the pentadecane/diatomite composite that was prepared with the direct impregnation method using a microwave‐treated diatomite sample. The pentadecane/sepiolite composite prepared in the melting temperature range 7.98°C to 8.53°C and latent heat capacity range 41.05 to 46.02 J/g. The results of the thermal analysis indicate that fabricated diatomite‐based or sepiolite‐based PCM composites have good potential as thermal energy storage materials.

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Lauric acid/intercalated kaolinite as form-stable phase change material for thermal energy storage

Cited by 121 publications

References 37 publications

Preparation and thermal properties of crosslinked polyurethane/lauric acid composites as novel form stable phase change materials with a low degree of supercooling

Preparation and thermal properties of crosslinked polyurethane/lauric acid composites as novel form stable phase change materials with a low degree of supercooling

Experimental and numerical studies of hybrid PCM embedded in plastering mortar for enhanced thermal behaviour of buildings

Development of pentadecane/diatomite and pentadecane/sepiolite nanocomposites fabricated by different compounding methods for thermal energy storage

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