Dense suspension of solid particles as a new heat transfer fluid for concentrated solar thermal plants: On-sun proof of concept

Flamant, Gilles; Gauthier, Daniel J.; Benoit, Hadrien; Sans, Jean-Louis; Garcia, R. F. Naranjo; Boissière, Benjamin; Ansart, Renaud; Hémati, Mehrdji

doi:10.1016/j.ces.2013.08.051

Cited by 173 publications

(105 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is lower than the heat capacity of common molten salts (1.5 kJ kg -1 K -1 for Solar Salt [14]), although the effect may be compensated with the large temperature range over which the sand may be operated (maximum of 800-1000 °C compared to 565 °C for Solar Salt) or larger quantity of this inexpensive material. The specific heat capacity reported here is comparable to that of other granular TES materials such as proppants or silicon carbide [15], [4].…”

Section: Resultssupporting

confidence: 68%

See 1 more Smart Citation

Characterization of desert sand as a sensible thermal energy storage medium

Diago

Iniesta

Delclos

et al. 2016

AIP Conference Proceedings

View full text Add to dashboard Cite

Section: Resultssupporting

confidence: 68%

“…A full scale prototype was later tested at a solar facility [3]. Recently, researchers have also proposed the use of silicon carbide [4] or sintered bauxite [5] both as solar absorbers, heat transfer and sensible heat storage media.…”

Section: Introductionmentioning

confidence: 99%

Characterization of desert sand as a sensible thermal energy storage medium

Diago

Iniesta

Delclos

et al. 2016

AIP Conference Proceedings

View full text Add to dashboard Cite

“…Applied as a heat transfer fluid (HTF) in solar receivers, this technology presents the advantages of low void fraction, mass flow control, and in addition particles can be used as a heat storage medium for direct heat storage. The concept validity was proved onsun in batch operation by Flamant et al [2], implementing a single-tube solar receiver. Furthermore Benoit et al [3] did achieve (DPS) outlet temperatures higher than 750 °C and calculated heat transfer coefficients up to 1100 W/m²/K by using the same single-tube solar rig.…”

Section: Introductionmentioning

confidence: 97%

On-sun first operation of a 150 kWth pilot solar receiver using dense particle suspension as heat transfer fluid

López

Benoit

Gauthier

et al. 2016

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

“…A comparison of the various properties of some commonly used thermo fluids, solar salts and oil used in high temperature solar collectors is given in Table 6 below [123].…”

Section: Molten Metalsmentioning

confidence: 99%

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

Srivastva¹,

Malhotra²,

Sc³

2015

J Fundam Renewable Energy Appl

View full text Add to dashboard Cite

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

show abstract

Dense suspension of solid particles as a new heat transfer fluid for concentrated solar thermal plants: On-sun proof of concept

Cited by 173 publications

References 23 publications

Characterization of desert sand as a sensible thermal energy storage medium

Characterization of desert sand as a sensible thermal energy storage medium

On-sun first operation of a 150 kWth pilot solar receiver using dense particle suspension as heat transfer fluid

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

Contact Info

Product

Resources

About