Thermal energy storage behavior of composite using hybrid nanomaterials as PCM for solar heating systems

Harikrishnan, S.; Kunhappan, Deepak; Kalaiselvam, S.

doi:10.1007/s10973-013-3472-x

Cited by 55 publications

(23 citation statements)

References 22 publications

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“…The experiments conducted by Ahammed et al (2016) [7] showed an increase of 5.23% in thermal conductivity of graphene-water nanocomposite, prepared using surfactant, when the volume concentration of nanoparticles is changed from 0.05% to 0.1%, and a 14.56% enhancement was observed when the volume concentration increased by three times. Harikrishnan et al (2014) [8] inferred that the latent heat of composite PCMs is lower than that of base material for both melting and freezing and the maximum changes are 3.56% and 3.82%, respectively. The thermal conductivity of graphene-water nanocomposite is found to be higher when compared with that of the metal oxide nanoparticles and is lower when compared with that of pure metallic nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…However, the use of pure metallic nanoparticles in fluids causes stability problems. Hence, Ahammed et al (2016) [9] suggested that instead of using a high-volume concentration of metal oxide and pure metal nanoparticles, a low-volume concentration of graphene can be used as the heat transfer fluid to enhance thermal conductivity. Harish et al (2015) [10] treated graphene nanoparticles with concentrated nitric acid to avoid the use of surfactants.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Investigation of Freezing and Melting Characteristics of Graphene-Based Phase Change Nanocomposite for Cold Thermal Energy Storage Applications

et al. 2019

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In the present work, the freezing and melting characteristics of water seeded with chemically functionalized graphene nanoplatelets in a vertical cylindrical capsule were experimentally studied. The volume percentage of functionalized graphene nanoplatelets varied from 0.1% to 0.5% with an interval of 0.1%. The stability of the synthesized samples was measured using zeta potential analyzer. The thermal conductivity of the nanocomposite samples was experimentally measured using the transient hot wire method. A ~24% (maximum) increase in the thermal conductivity was observed for the 0.5% volume percentage in the liquid state, while a ~53% enhancement was observed in the solid state. The freezing and melting behavior of water dispersed with graphene nanoplatelets was assessed using a cylindrical stainless steel capsule in a constant temperature bath. The bath temperatures considered for studying the freezing characteristics were −6 °C and −10 °C, while to study the melting characteristics the bath temperature was set as 31 °C and 36 °C. The freezing and melting time decreased for all the test conditions when the volume percentage of GnP increased. The freezing rate was enhanced by ~43% and ~32% for the bath temperatures of −6 °C and −10 °C, respectively, at 0.5 vol % of graphene loading. The melting rate was enhanced by ~42% and ~63% for the bath temperatures of 31 °C and 36 °C, respectively, at 0.5 vol % of graphene loading.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Freezing and Melting Characteristics of Graphene-Based Phase Change Nanocomposite for Cold Thermal Energy Storage Applications

et al. 2019

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“…Different potential candidates for PCM with a solid-liquid phase transition have been studied in the literature. Among them, inorganic salts, paraffins, hydrated salts and fatty acids [11,12,[15][16][17][18][19]. Compared to all these materials, the eutectic Mg-51%Zn alloy, in addition to its high energy density, its constant heat supply and its recovery temperature, has the further advantage of a high thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Thermal emissivity spectra and structural phase transitions of the eutectic Mg-51%Zn alloy: A candidate for thermal energy storage

Echániz

Pérez-Sáez

Risueño

et al. 2016

Journal of Alloys and Compounds

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“…To solve the environmental problems occurred due to the use of fossil fuels, renewable energy is being used in many countries around the world not only for harnessing the energy but also to solve the environmental problems [6]. Buildings have the major share of total energy, which is approximately 72.4 % and currently mainly supplied by fossil fuels [7].…”

Section: Introductionmentioning

confidence: 99%

Thermal and economic analysis of low-cost modified flat-plate solar water heater with parallel two-side serpentine flow

Hossain

Pandey

Tunio

et al. 2015

J Therm Anal Calorim

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The present study deals with the thermal performance evaluation and economic analysis of a low-cost modified flat-plate solar water heater (SWH) with a parallel two-side serpentine flow. This is a unique inexpensive and easily fabricated SWH having better thermal efficiency than those investigated by earlier authors. The solar water heating system is having parallel two-side serpentine arrangement with 68 pieces of copper elbows inclined at an angle of 908 for the water flow inside the collector. A PV panel of the suitable wattage has been applied to supply power to the controller circuit and pump which makes this system selfsufficient. This experimental setup is developed at the roof of the building keeping the fact in the mind to be used for both residential and commercial buildings as per the needs. The peak thermal efficiency of the system is 81.26 and 80.20 % individually for the months of June and July under typical climatic condition of Malaysia, while the average thermal efficiencies for the months of June and July have been found to be 70.24 and 70.96 % relatively, which is compared with those of other eight designs presented to the study. Furthermore, a comprehensive fiscal analysis for the long run using MATLAB has been presented to the study. It is found that this solar water heater is more economical than that of an electric water heater in the long run.

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Thermal energy storage behavior of composite using hybrid nanomaterials as PCM for solar heating systems

Cited by 55 publications

References 22 publications

Experimental Investigation of Freezing and Melting Characteristics of Graphene-Based Phase Change Nanocomposite for Cold Thermal Energy Storage Applications

Experimental Investigation of Freezing and Melting Characteristics of Graphene-Based Phase Change Nanocomposite for Cold Thermal Energy Storage Applications

Thermal emissivity spectra and structural phase transitions of the eutectic Mg-51%Zn alloy: A candidate for thermal energy storage

Thermal and economic analysis of low-cost modified flat-plate solar water heater with parallel two-side serpentine flow

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