Thermal conductivity measurement and characterization of binary nanofluids

Jung, Jung-Yeul; Cho, Chang-Hwan; Lee, Wook Hyun; Kang, Yong Tae

doi:10.1016/j.ijheatmasstransfer.2011.01.021

Cited by 55 publications

(19 citation statements)

References 14 publications

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“…It is well known that the stably dispersed nanoparticles with a high thermal conductivity can greatly enhance the effective thermal conductivity of the nanofluids. A lot of studies on the abnormal enhancement of thermal properties of nanofluids have been carried out experimentally and theoretically [3][4][5][6]. It is also reported that the mass transfer is enhanced in the absorption refrigerator by the nanofluids [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

CO2 absorption/regeneration enhancement in DI water with suspended nanoparticles for energy conversion application

Lee

Kang

2015

Applied Energy

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Section: Introductionmentioning

confidence: 99%

CO2 absorption/regeneration enhancement in DI water with suspended nanoparticles for energy conversion application

Lee

Kang

2015

Applied Energy

Self Cite

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“…This is because (1) such NPs have an inherently high thermal conductivity and (2) the small size of the NPs (diameter d ∼ 10 0 -10 2 nm) provides an extremely large surface-area to volume ratio interfacing the two phases. Thus, the resulting fluid develops a notably higher thermal conductivity than the carrier liquid [2][3][4][5][6][7][8][9][10][11]. This enhances their performance in thermal management where the nanofluids form the cooling fluid, i.e., they remove heat from a cold-plate mated to a heat source and subsequently reject it to the ambient through a radiator [12,13].…”

Section: Introductionmentioning

confidence: 99%

Viscosity of magnetite–toluene nanofluids: Dependence on temperature and nanoparticle concentration

et al. 2015

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We examine the dependence of the viscosity of nanofluids, comprised of magnetite nanoparticles dispersed in toluene, on particle concentration and temperature. The nanofluid viscosity increases monotonically with particle concentration. We show that although the nanoparticles aggregate to form clusters with increasing concentration, the cluster size is fairly monodisperse and hence the viscosity can be expressed as a function of only the particle concentration. The viscosity of the nanofluid is found to decrease with temperature, similarly to the characteristics of the carrier liquid. We describe these dependencies through an empirical correlation, since the observations are useful to employ such nanofluids in engineering applications.

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“…Figure 4 presents a comparison of the thermal conductivity values of the H2O-LiBr-Al2O3 nanofluid predicted using correlations shown in Table 3. The same experimental conditions used by [51] are considered (a salt mass fraction of 50% and a temperature of 22.3 °C), because this is the unique experimental work available in the open literature about thermal conductivity of this nanofluid. The results obtained using the correlation of [44] are not shown as these are identical to those of [45].…”

Section: Solar Thermal Facilitymentioning

confidence: 99%

Performance of a Solar Absorption Cooling System Using Nanofluids and a Membrane-Based Microchannel Desorber

et al. 2020

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In this work, the performance of a single effect absorption cooling system fed by solar thermal energy is evaluated. The absorption chiller includes a membrane-based microchannel desorber using three types of nanoparticles: Al2O3, CuO, or carbon nanotubes (CNT). Correlations available in the open literature to calculate the thermal conductivity of nanofluids are reviewed. Using experimental data for the water-lithium bromide solution (H2O-LiBr) with Al2O3 and CNT nanoparticles, the most appropriate correlation for thermal conductivity is selected. Nanofluid properties are evaluated using a concentration of nanoparticles of up to 5% in volume. The largest increase in the desorption rate (7.9%), with respect to using pure H2O-LiBr solution, is obtained using CNT nanoparticles and the maximum concentration of nanoparticles simulated. The performance of the chiller is evaluated and the daily solar coefficient of performance (SCOP) for the solar cooling facility is obtained. The best improvement with respect to the conventional system (without nanoparticles) represents an increase in the cooling effect of up to 6%. The maximum number of desorber modules recommended, always lower than 50, has been identified.

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Thermal conductivity measurement and characterization of binary nanofluids

Cited by 55 publications

References 14 publications

CO2 absorption/regeneration enhancement in DI water with suspended nanoparticles for energy conversion application

CO2 absorption/regeneration enhancement in DI water with suspended nanoparticles for energy conversion application

Viscosity of magnetite–toluene nanofluids: Dependence on temperature and nanoparticle concentration

Performance of a Solar Absorption Cooling System Using Nanofluids and a Membrane-Based Microchannel Desorber

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