Enhancement of solar radiation absorption using nanoparticle suspension

Kameya, Yuki; Hanamura, Katsunori

doi:10.1016/j.solener.2010.11.021

Cited by 136 publications

(50 citation statements)

References 17 publications

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“…Kameya and Hanamura [119] studied the effect of nanoparticle suspension in alkyl naphthalene-based fluid for solar radiation absorption ability. The size of nanoparticles was 4-9 nm and volume fraction was kept at 0.001.…”

Section: Belowmentioning

confidence: 99%

Progress of nanofluid application in solar collectors: A review

Verma

Tiwari

2015

Energy Conversion and Management

287

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Section: Belowmentioning

confidence: 99%

Progress of nanofluid application in solar collectors: A review

Verma

Tiwari

2015

Energy Conversion and Management

287

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“…The optical properties of the effective fluid are highly dependent on the shape and size of the particle and the optical properties of the base fluid and particles themselves [14]. The radiation absorption characteristics of a Ni nanoparticle suspension were investigated by spectroscopic transmission measurement [15]. Recently, carbon nanohorns (CNHs), as the latest to be discovered in the family of carbon-based nanostructured materials [16] with large surface area and large number of cavities [17] have been used as nanoparticles to improve optical properties of direct solar absorbers.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the effect of nanofluid-based absorbers on direct solar collector

Saidur

Meng

Said

et al. 2012

International Journal of Heat and Mass Transfer

271

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“…They developed a direct collector that absorbed solar radiation by the black fluid (water with 3.0 g/L, Indiaink). However, later on, black fluid like India Ink, as well as other organic and inorganic chromophores have been shown to experience light-and temperature-induced degradation as well as low thermal conductivity [39].…”

Section: Low Temperature Collectormentioning

confidence: 99%

Recent Developments in Heat Transfer Fluids Used for Solar Thermal Energy Applications

Srivastva¹,

Malhotra²,

Sc³

2015

J Fundam Renewable Energy Appl

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Solar thermal collectors are emerging as a prime mode of harnessing the solar radiations for generation of alternate energy. Heat transfer fluids (HTFs) are employed for transferring and utilizing the solar heat collected via solar thermal energy collectors. Solar thermal collectors are commonly categorized into low temperature collectors, medium temperature collectors and high temperature collectors. Low temperature solar collectors use phase changing refrigerants and water as heat transfer fluids. Degrading water quality in certain geographic locations and high freezing point is hampering its suitability and hence use of water-glycol mixtures as well as water-based nano fluids are gaining momentum in low temperature solar collector applications. Hydrocarbons like propane, pentane and butane are also used as refrigerants in many cases. HTFs used in medium temperature solar collectors include water, waterglycol mixtures -the emerging "green glycol" i.e., trimethylene glycol and also a whole range of naturally occurring hydrocarbon oils in various compositions such as aromatic oils, naphthenic oils and paraffinic oils in their increasing order of operating temperatures. In some cases, semi-synthetic heat transfer oils have also been reported to be used. HTFs for high temperature solar collectors are a high priority area and extensive investigations and developments are occurring globally. In this category, wide range of molecules starting from water in direct steam generation, air, synthetic hydrocarbon oils, nanofluid compositions, molten salts, molten metals, dense suspension of solid silicon carbide particles etc., are being explored and employed. Among these, synthetic hydrocarbon oils are used as a fluid of choice in majority of high temperature solar collector applications while other HTFs are being used with varying degree of experimental maturity and commercial viability -for maximizing their benefits and minimizing their disadvantages. Present paper reviews the recent developments taking place in the area of heat transfer fluids for harnessing solar thermal energy. Refrigerants/phase changing materials: These are low boiling point but high heat capacity substances used in the solar collectors to transfer heat in applications like solar space cooling and heating, refrigerators, air conditioning, etc [7]. These materials absorb heat from the solar collectors, produce work either by expanding in a turbo-generator of a vapor compression cycle or by dissociating the refrigerant from its absorbent in a vapor absorption cycle [8]. In some of the relatively high temperature applications, higher boiling point refrigerants are used as indirect heat transfer fluids, wherein the heat collected from the solar collectors is transferred to another fluid like water from where the refrigerants pick-up heat to do the required work in the turbo-generators [9,10]. Recent Developments in Heat Transfer

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Enhancement of solar radiation absorption using nanoparticle suspension

Cited by 136 publications

References 17 publications

Progress of nanofluid application in solar collectors: A review

Progress of nanofluid application in solar collectors: A review

Evaluation of the effect of nanofluid-based absorbers on direct solar collector

Recent Developments in Heat Transfer Fluids Used for Solar Thermal Energy Applications

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