Study on thermal storage properties of hybrid nanocomposite-dibasic ester as phase change material

Parameshwaran, R.; Dhamodharan, P.; Kalaiselvam, S.

doi:10.1016/j.tca.2013.08.028

Cited by 28 publications

(12 citation statements)

References 55 publications

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“…-, 4000< Re <10 5 (16) The comparative result as depicted in Figure 8 suggests The increasing trends as observed in friction factor and pressure drop of nanofluids relative to the base fluid could be attributed to two key intrinsic reasons: (a) viscous effects [25] and (b) inter-particle/inter-molecular adhesion effects. By virtue of inter-particle adhesion forces (repulsion) present between the particles and the base fluid, beyond the critical volume fraction of nanoparticles (typically 1%), the temporal flocculation (agglomeration or clusters) may have been induced in nanofluids [25,26].…”

Section: Blasius Correlationmentioning

confidence: 94%

“…By virtue of inter-particle adhesion forces (repulsion) present between the particles and the base fluid, beyond the critical volume fraction of nanoparticles (typically 1%), the temporal flocculation (agglomeration or clusters) may have been induced in nanofluids [25,26]. In the present case, these flocs of nanoparticles being subjected to applied shear stress (may be through pumping effect) eventually would have not fragmented and reassembled to primary (tiny) particles, which manifested in the higher dynamic viscosity of nanofluids [27,28].…”

Section: Blasius Correlationmentioning

confidence: 99%

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Experimental Studies on Convective Heat Transfer and Pressure Drop Characteristics of Metal and Metal Oxide Nanofluids Under Turbulent Flow Regime

Madhesh

Parameshwaran

Kalaiselvam

2015

Heat Transfer Engineering

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This study aims at achieving improved heat transfer potential for tube-in-tube counter flow heat exchanger using silver/water (Ag) and copper oxide/water (CuO) nanofluids. Heat transfer and rheological characteristics of prepared nanofluids containing spherical nanoparticles of average size of 12-64 nm were experimentally investigated. Based on the experimental results, for increase in nanoparticles volume proportion up to 1.0%, convective heat transfer coefficient and Nusselt number were augmented by 52% and 47.5% for Ag nanofluids, 27.6% and 24.3% for CuO nanofluids, respectively, while compared with base fluid. Besides, at higher Reynolds number typically around 7500 the heat transfer potential was also increased considerably. However, increased particle loading eventually increased the density and dynamic viscosity of nanofluids which increased frictional pressure drop from 4% to 22.2%. The increased heat transfer rate at increased particle concentration was attributed to the thermal conductivity and diffusion of nanoparticles in fluid medium, whereas increased pressure drop was largely influenced by density and dynamic viscosity of nanofluids. Furthermore, the new correlations developed in this study based on the experimental results revealed that the Downloaded by [New York University] at 13:36 14 June 2015 ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT 2 mean deviation between experimental and predicted Nusselt number varied from +6% to -12% and +3% to -7% respectively, for Ag and CuO nanofluids.

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Section: Blasius Correlationmentioning

confidence: 94%

Section: Blasius Correlationmentioning

confidence: 99%

Experimental Studies on Convective Heat Transfer and Pressure Drop Characteristics of Metal and Metal Oxide Nanofluids Under Turbulent Flow Regime

Madhesh

Parameshwaran

Kalaiselvam

2015

Heat Transfer Engineering

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“…In recent times, dedicated research studies have been performed on embedding hybrid nanocomposite (HyNC) materials into organic ester PCMs to enable them to be considered as potential candidates for cooling applications [214][215][216][217][218]. The organic ester PCMs utilized in these studies include EC, dimethyl adipate (DMA), and methyl cinnamate (MC).…”

Section: Continuedmentioning

confidence: 99%

“…Through the active works performed by the research group [214][215][216][217][218], the potential thermal storage properties of these organic ester PCMs embedded with different nanomaterials have been explored. The attributes related to these organic compounds to serve as PCMs have not been explored in the past.…”

Section: Continuedmentioning

confidence: 99%