Long-term thermophysical behavior of paraffin wax and paraffin wax/polyaniline (PANI) composite phase change materials

George, M. V.; Pandey, A. K.; Rahim, N.A.; Tyagi, V.V.; Shahabuddin, Syed; Saidur, R.

doi:10.1016/j.est.2020.101568

Cited by 52 publications

(18 citation statements)

References 38 publications

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“…In addition, the melting and crystallization properties of PW in the FSPCMs were blocked at some level by the PU foam, which also led to the partial decline of the melting and crystal enthalpies. Nevertheless, as shown in Table S3, the latent heat storage density of the developed FSPCMs in this work reached 87.1 to 93.2% of pristine PW, which was higher or comparable to the recently reported data [27,28,[38][39][40][41][42][43].…”

Section: Thermal Properties Of the Fspcmssupporting

confidence: 84%

“…One scalable method is to design and develop form-stable PCMs (FSPCMs) with improved solar-thermal energy conversion ability, which can not only remove the leakage threats but also gather thermal energy from solar irradiation [24][25][26]. Polyaniline (PANI) [27,28], polydopamine (PDA) [29][30][31] and polypyrrole (PPy) [32,33] as kinds of polymer-based light absorber materials have been introduced into organic PCMs due to their impressive solar-thermal conversion property. Nevertheless, stable solar-thermal energy harvesting and high latent heat energy storage density with ignorable heat waste for the FSPCMs remains one of the hotspots due to liquid leakage, low heat-conducting property and limited energy conversion efficiency, obstructing their further development and business application.…”

Section: Introductionmentioning

confidence: 99%

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Silver/Polypyrrole-Functionalized Polyurethane Foam Embedded Phase Change Materials for Thermal Energy Harvesting

et al. 2021

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Conversion of solar energy into thermal energy stored in phase change materials (PCMs) can effectively relieve the energy dilemma and improve energy utilization efficiency. However, facile fabrication of form-stable PCMs (FSPCMs) to achieve simultaneously energetic solar–thermal, conversion and storage remains a formidable challenge. Herein, we report a desirable solar–thermal energy conversion and storage system that utilizes paraffin (PW) as energy-storage units, the silver/polypyrrole-functionalized polyurethane (PU) foam as the cage and energy conversion platform to restrain the fluidity of the melting paraffin and achieve high solar–thermal energy conversion efficiency (93.7%) simultaneously. The obtained FSPCMs possess high thermal energy storage density (187.4 J/g) and an excellent leak-proof property. In addition, 200 accelerated solar–thermal energy conversion-cycling tests demonstrated that the resultant FSPCMs had excellent cycling durability and reversible solar–thermal energy conversion ability, which offered a potential possibility in the field of solar energy utilization technology.

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Section: Thermal Properties Of the Fspcmssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Silver/Polypyrrole-Functionalized Polyurethane Foam Embedded Phase Change Materials for Thermal Energy Harvesting

et al. 2021

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“…The improvement for the thermal conductivity of PCM by using improving the composite phase change material paraffin wax (RT60) and graphite (GNP) [8]. The improvement is also done by using polyaniline to improve the thermal reliability [9]. Another method is done by using aluminum by 8 % w/w can increase the thermal conductivity up to 0.63 W/mK [10].…”

Section: Introductionmentioning

confidence: 99%

Improvement the performance of composite PCM paraffin-based incorporate with volcanic ash as heat storage for low-temperature application

et al. 2021

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Paraffin is well known thermal energy storage with the high latent heat of fusion. Unfortunately, low thermal conductivity and low melting temperature inhibit large-scale applications for lower temperature applications like solar water heaters and desalination. The addition of high thermal conductivity material can increase the thermal conductivity of paraffin and increase the melting temperature of paraffin. In this study, a new approach is taken by using volcanic sand as thermal conductivity enhancement material. The properties of the sand are examined. The chemical composition of the sand is dominated by Fe (51.23 %), Fe2O3 (23.24 %) and SiO2 (11 %), which are known as good thermal conductivity materials. Six different compositions of paraffin/sand (weight ration) are tested to observe the melting and vapor temperature of the composite. Adding sand (with granule size of 44 µm) by 30 wt % can accelerate the charging rate by 25 % compared to pure paraffin, where the discharging rate is increased significantly by 17.8 %. The supercooling degree of the composite is only 1 °C, where pure paraffin has a supercooling degree by 8 °C. The charging and discharging characteristics for each sample are discussed in detail within the article. Overall, the addition of volcanic sand improves paraffin's charging and discharging rate, reducing the supercooling degree and can be considered a convenient method to improve the paraffin performance as latent heat storage

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“…24 In contrast, the CPCM prepared by porous material adsorption PCM can effectively prevent the leakage of PCM, and the preparation method is simple and easy to realize industrialization. [25][26][27] Wu et al 27 prepared a CPCM with melamine foam (MF)@poly-dopamine (PDA) as the carrier material to adsorb PW. It was beneficial for MF@PDA to absorb more PW because of its low density and high porosity, so that CPCM had high latent heat and good shape stability.…”

Section: Introductionmentioning

confidence: 99%

“…Utilizing electrospinning can obtain the CPCM with PCM as the core layer and fiber as the skin layer, but it is unable to solve the problem of fiber anisotropy and PCM leakage effectively 24 . In contrast, the CPCM prepared by porous material adsorption PCM can effectively prevent the leakage of PCM, and the preparation method is simple and easy to realize industrialization 25–27 . Wu et al 27 prepared a CPCM with melamine foam (MF)@poly‐dopamine (PDA) as the carrier material to adsorb PW.…”

Section: Introductionmentioning

confidence: 99%

Novel paraffin wax/ultra‐high molecular weight polyethylene composite phase change materials modified by carbon nanotubes with excellent combination property

Cao

et al. 2021

J of Applied Polymer Sci

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Phase change materials store and release heat energy in the process of phase change, so as to realize the effective recovery and utilization of heat energy. In this work, ultra-high molecular weight polyethylene (UHMWPE)@carbon nanotubes (CNT) 3D porous matrix were fabricated by rotary sintering. By vacuum adsorbing paraffin wax (PW) into UHMWPE@CNT porous matrix, composite phase change materials (CPCM) with excellent shape stability and mechanical properties were obtained. In addition, thermal gravimetric analysis (TG) results showed that the thermal stability of PW in CPCM was significantly improved. Moreover, the highest thermal conductivity of CPCM was 0.31 W m À1 K À1 at a relatively low content of CNT, which was 1.71 times that of CPCM without CNT. CNT was uniformly dispersed in the porous matrix of UHMWPE to enhance the thermal properties of CPCM. Especially when the CNT content was 1.5%, the thermal storage performance and photothermal conversion efficiency of CPCM were effectively improved. Therefore, the CPCM prepared by this method with excellent combination property, had great application prospect in energy storage.

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Long-term thermophysical behavior of paraffin wax and paraffin wax/polyaniline (PANI) composite phase change materials

Cited by 52 publications

References 38 publications

Silver/Polypyrrole-Functionalized Polyurethane Foam Embedded Phase Change Materials for Thermal Energy Harvesting

Silver/Polypyrrole-Functionalized Polyurethane Foam Embedded Phase Change Materials for Thermal Energy Harvesting

Improvement the performance of composite PCM paraffin-based incorporate with volcanic ash as heat storage for low-temperature application

Novel paraffin wax/ultra‐high molecular weight polyethylene composite phase change materials modified by carbon nanotubes with excellent combination property

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