Thermophysical properties and applications of nano-enhanced PCMs: An update review

Yang, Linjun; Huang, Jian‐An; Zhou, Fengjiao

doi:10.1016/j.enconman.2020.112876

Cited by 233 publications

(59 citation statements)

References 164 publications

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“…Opaque silicon-based spaced type STPV has potential to restrict the solar energy transmission as silicon has high absorption [36][37]. Due to latent heat capacity, STPV-PCM slowed down the increment of a building's interior room temperature in a higher order compared to other two systems [38][39]. The utilization of STPV with the PCM module will reduce the cooling load of the building by minimizing the solar heat gain into the ZEB buildings.…”

Section: Thermal Performance Of Stpvmentioning

confidence: 99%

Investigation of Inorganic Phase Change Material for a Semi-Transparent Photovoltaic (STPV) Module

et al. 2020

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The semi-transparent photovoltaic (STPV) module is an emerging technology to harness the solar energy in the building. Nowadays, buildings are turning from energy consumers to energy producers due to the integration of the STPV module on the building envelopes and facades. In this research, the STPV module was integrated on the rooftop window of the experimental room at Kovilpatti (9°10′0″ N, 77°52′0″ E), Tamil Nadu, India. The performance of the STPV modules varies with respect to the geographical location, incident solar radiation, and surface temperature of the module. The surface temperature of the STPV module was regulated by the introduction of the mixture of graphene oxide and sodium sulphate decahydrate (Na2SO4·10H2O). The various concentration of the graphene oxide was mixed together with the Na2SO4·10H2O to enhance the thermal conductivity. The thermal conductivity of the mixture 0.3 concentration was found to be optimum from the analysis. The instantaneous peak temperature of the semi-transparent photovoltaic phase change material (STPV-PCM) module was reduced to 9 °C during summer compared to the reference STPV. At the same time, the energy conversion efficiency was increased by up to 9.4% compared to the conventional STPV module. Due to the incorporation of the graphene oxide and Na2SO4·10H2O, the daily output power production of the STPV module was improved by 12.16%.

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Section: Thermal Performance Of Stpvmentioning

confidence: 99%

Investigation of Inorganic Phase Change Material for a Semi-Transparent Photovoltaic (STPV) Module

et al. 2020

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“…The thermo-physical properties of the BHE components are shown in Tables 1 and 2. Based on a review article conducted by Yang et al [39], mostly dispersed nanoparticles into the PCMs, such as Cu, CuO, Al 2 O 3 , TiO 2 , SiO 2 , MWCNT, and graphene, are used as nanoparticles in this study to be added to the Paraffin (n-Octadecane) as the base fluid.…”

Section: Computational Fluid Dynamics Model and Simulation Conditionsmentioning

confidence: 99%

“…The range of volume fraction of nanoparticles (0-20%) is chosen based on the past NEPCM published articles, e.g., [33][34][35][36][37][38][39][40][41]. Twenty percent is the maximum percentage of nanoparticles' volume fraction that has been dispersed into the base fluid to prepare a NEPCM thus far [39][40][41]. The variation of the liquid fraction with operating time at various volume fractions of the NEPCM containing Cu nanoparticles is represented in Figure 9.…”

Section: Impact Of Nano-enhanced Phase Change Materials Volume Fractiomentioning

confidence: 99%

“…However, based on the previous works concerning NEPCMs [39][40][41] and to the best of the authors' knowledge, to this day, no scholar has studied the application of NEPCMs as backfill in the BHE which indicates the significance of this study. Therefore, the novelty of the present article is the numerical simulation of NEPCMs in a single U-tube BHE.…”

Section: Introductionmentioning

confidence: 97%

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Numerical Study on the Thermal Performance of a Single U-Tube Borehole Heat Exchanger Using Nano-Enhanced Phase Change Materials

et al. 2020

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To investigate the impacts of using nano-enhanced phase change materials on the thermal performance of a borehole heat exchanger in the summer season, a three-dimensional numerical model of a borehole heat exchanger is created in the present work. Seven nanoparticles including Cu, CuO, Al2O3, TiO2, SiO2, multi-wall carbon nanotube, and graphene are added to the Paraffin. Considering the highest melting rate and lowest outlet temperature, the selected nano-enhanced phase change material is evaluated in terms of volume fraction (0.05, 0.10, 0.15, 0.20) and then the shape (sphere, brick, cylinder, platelet, blade) of its nanoparticles. Based on the results, the Paraffin containing Cu and SiO2 nanoparticles are found to be the best and worst ones in thermal performance improvement, respectively. Moreover, it is indicated that the increase in the volume fraction of Cu nanoparticles could enhance markedly the melting rate, being 0.20 the most favorable value which increased up to 55% the thermal conductivity of the nano-enhanced phase change material compared to the pure phase change material. Furthermore, the blade shape is by far the most appropriate shape of the Cu nanoparticles by considering about 85% melting of the nano-enhanced phase change material.

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“…1 To overcome this challenge, phase change materials (PCMs) are integrated in heat sinks for latent heat storage. 2,3 These PCMs are integrated in numerous fields of applications like the thermal regulation of the building, 4 the thermal regulation of agricultural greenhouses. 5 In the past few years, the development of passive cooling of electronic components using PCM-based heat sinks has announced a new trend in cooling technologies.…”

Section: Introductionmentioning

confidence: 99%

Investigating the effect of single and hybrid nanoparticles on melting of phase change material in a rectangular enclosure with finite heat source

2020

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Summary This article presents two‐dimensional (2D) transient numerical simulation and mathematical modeling of a heat sink based on nano‐enhanced phase change materials (NePCMs) to study their performance for the cooling of an electronic component. n‐eicosane is used as a PCM and Al2O3, ZnO, CuO and Cu are used as nanoparticles in NePCMs. An electronic component is mounted in the center of the bottom wall and which an aluminum fin simulating the role of a substrate (motherboard) occupies. The NePCM completely fills the inner part of the heat sink. The NePCM store the heat generated by the protuberant electronic component. The transient regime is numerically performed adopting the finite volume method and the enthalpy‐porosity technique. It has been found that the mean heat transfer and the fluid flow structure are closely dependent on the nanoparticles type in NePCM. The addition of single NePCM, with volume fractions of 2% and 4%, decreases the electronic component operating temperature and the latent heat phase duration during which the electronic component operates safely. The hybrid NePCM shows a different behavior by decreasing the electronic component operating temperature and increasing the latent phase duration. Compared to pure PCM, by inserting a volume fraction of 4%‐Cu, the electronic component working temperature decreases by 4.69% and the latent heat phase duration decreases by 3.33%. Compared to pure PCM, hybrid nanoparticle insertion of 1%‐Al2O3 and 3%‐Cu showed a 5.77% decrease in the electronic component operating temperature and a 31.11% increase in the latent heat phase duration. By inserting hybrid nanoparticles instead of single nanoparticles, the effective thermal effusivity of NePCM is improved by 10.85%.

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Thermophysical properties and applications of nano-enhanced PCMs: An update review

Cited by 233 publications

References 164 publications

Investigation of Inorganic Phase Change Material for a Semi-Transparent Photovoltaic (STPV) Module

Investigation of Inorganic Phase Change Material for a Semi-Transparent Photovoltaic (STPV) Module

Numerical Study on the Thermal Performance of a Single U-Tube Borehole Heat Exchanger Using Nano-Enhanced Phase Change Materials

Investigating the effect of single and hybrid nanoparticles on melting of phase change material in a rectangular enclosure with finite heat source

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