Characterization of light-induced, volumetric steam generation in nanofluids

Taylor, Robert A.; Phelan, Patrick E.; Adrian, Ronald J.; Gunawan, Andrey; Otanicar, Todd

doi:10.1016/j.ijthermalsci.2012.01.012

Cited by 70 publications

(21 citation statements)

References 16 publications

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“…It should also be noted that the temperature observed by the IR camera is only the first 100 nm of the fluid's depth (from the cuvette's wall) because the average absorption coefficient for water between 3.6 and 5.1 /<m is 288 cm " 1. Thus, more than 95% of IR emission sig nal in this spectral range is absorbed in a 100 /an thickness of water [8,14].…”

Section: Experimental Approachmentioning

confidence: 95%

“…Biocompatible nanoparticles of controlled size and shape can be used to strongly absorb visible or near-infrared light and convert it to heat through surface plasmon resonance [1,2]. This causes a temperature rise in nearby tissues, which, based on the position and loading of the nanoparticles, can potentially kill can cerous cells while sparing healthy ones [3], Various types of gold nanoparticles (e.g., nanorods, nanoshells, and nanospheres) are generally used in PPTT because they have proven to be biocom patible [2][3][4] and are optically tunable through controlled size and morphology [2,[5][6][7][8]. Monodisperse samples can be fabricated to possess strong visible (380-750 nm) and near-infrared (750-1400 nm) light absorption over a short wavelength band.…”

Section: Introductionmentioning

confidence: 99%

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Nanoparticle-Assisted Heating Utilizing a Low-Cost White Light Source

Taylor

Wong

Baek

et al. 2013

Journal of Nanotechnology in Engineering and Medicine

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In this experimental study, a filtered white light is used to induce heating in water-based dispersions of 20 nm diameter gold nanospheres (GNSs)-enabling a low-cost form of plasmonic photothermal heating. The resulting temperature fields were measured using an infrared (IR) camera. The effect of incident radiative flux (ranging from 0.38 to 0.77W-cmT2) and particle concentration (ranging from 0.25-1.0 x 10 3 particles per mL) on the solution's temperature were investigated. The experimental results indicate that surface heat treatments via GNSs can be achieved through complementary tuning of GNS solutions and filtered light.

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Section: Experimental Approachmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Nanoparticle-Assisted Heating Utilizing a Low-Cost White Light Source

Taylor

Wong

Baek

et al. 2013

Journal of Nanotechnology in Engineering and Medicine

Self Cite

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“…Laser irradiance on nanoparticles has been shown to induce dramatic localized heating and even vaporization of their hosting medium [40,41]. Lukianova-Hleb et al were the first group to present the idea of introducing short laser pulses to generate transient vapor nanobubbles around plasmonic nanoparticles [42].…”

Section: Nanobubbles Formation Using Conductive Nanoparticle Under Lamentioning

confidence: 99%

Novel Receiver-Enhanced Solar Vapor Generation: Review and Perspectives

Raza

Alzaim

et al. 2018

Energies

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Efficient solar vapor/steam generation is important for various applications ranging from power generation, cooling, desalination systems to compact and portable devices like drinking water purification and sterilization units. However, conventional solar steam generation techniques usually rely on costly and cumbersome optical concentration systems and have relatively low efficiency due to bulk heating of the entire liquid volume. Recently, by incorporating novel light harvesting receivers, a new class of solar steam generation systems has emerged with high vapor generation efficiency. They are categorized in two research streams: volumetric and floating solar receivers. In this paper, we review the basic principles of these solar receivers, the mechanism involving from light absorption to the vapor generation, and the associated challenges. We also highlight the two routes to produce high temperature steam using optical and thermal concentration. Finally, we propose a scalable approach to efficiently harvest solar energy using a semi-spectrally selective absorber with near-perfect visible light absorption and low thermal emittance. Our proposed approach represents a new development in thermally concentrated solar distillation systems, which is also cost-effective and easy to fabricate for rapid industrial deployment.

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“…Firstly, in conventional flat-plate collectors, nanofluid improves thermo-physical properties of fluid which is investigated in many studies (Moraveji and Razvarz, 2012;Mahmoodi and Hashemi, 2012;Ghadimi et al, 2011;Peyghambarzadeh et al, 2011;Ramesh and KotekarPrabhu, 2011;Roy et al, 2012). Secondly, in direct absorption solar collectors, which solar energy is directly absorbed with in the fluid volume, nanofluid enhances solar incident absorption drastically (Khullar et al, 2013;Lenert and Wang, 2012;Veeraragavan et al, 2012;Taylor et al, 2012). Tiwari et al (2013) theoretically demonstrated the enhancement of collector efficiency by using nanofluid as working fluid in flat-plate collector and the potential of reducing 31% in CO 2 emission in comparison with the conventional models.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Nanoparticle Shape Effect on a Nanofluid Based Flat-Plate Solar Collector Efficiency

Amin

Ghasempour

Fatemeh

et al. 2015

Energy Exploration & Exploitation

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Solar thermal energy is a very convenient source of heating which is environmentally benign. Solar collectors convert solar radiation into heat and transfer the heat to a medium. Flat-plate solar collectors are the most common and cost effective devices for exploiting solar energy. However, these systems have relatively low efficiency due to the poor thermo-physical properties of working fluid. Dispersing of nanometer sized particles into the base fluid is proposed as an efficient method to improve heat transfer properties of the working fluid. In order to evaluate the thermal performance of nanofluid in a solar collector, firstly, it is essential to understand the thermo-physical variations of base fluid through addition of nanoparticles. Thermo-physical properties of base fluid vary with parameters such as particle concentration, particle diameter, and particle shape. In this study the effect of these parameters are explored on thermal performance of a flat-plate solar collector theoretically. Investigating shape effect of particles on collector efficiency is a highlight in this study. It is observed that increasing nanoparticles volumetric concentration leads to enhancenement in flat-plate collector efficiency. Reversely, particle size enhancement reduces the efficiency. In addition, particle shape affects collector efficiency. For different shapes of particles, including spherical, brick, cylinders, platelets, and blades, the blade shape particles relatively have the highest efficiency.

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Characterization of light-induced, volumetric steam generation in nanofluids

Cited by 70 publications

References 16 publications

Nanoparticle-Assisted Heating Utilizing a Low-Cost White Light Source

Nanoparticle-Assisted Heating Utilizing a Low-Cost White Light Source

Novel Receiver-Enhanced Solar Vapor Generation: Review and Perspectives

Evaluation of Nanoparticle Shape Effect on a Nanofluid Based Flat-Plate Solar Collector Efficiency

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