Characterization of Pyromark 2500 Paint for High-Temperature Solar Receivers

Ho, Clifford K.; Mahoney, Alan Roderick; Ambrosini, Andrea; Bencomo, Marlene; Hall, Aaron Christopher.; Lambert, Timothy N.

doi:10.1115/1.4024031

Cited by 169 publications

(85 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous studies [20,22] showed that the aging of the coating is mainly represented by the evolution of its solar absorptance. For this reason, the thermal emittance is assumed constant and the following simplified expression of the receiver efficiency is used (eq.…”

Section: Expression Of the Annualized Energymentioning

confidence: 99%

Levelized cost of energy (LCOE) metric to characterize solar absorber coatings for the CSP industry

Boubault

Hall

et al. 2016

Renewable Energy

Self Cite

View full text Add to dashboard Cite

a b s t r a c tThe contribution of each component of a power generation plant to the levelized cost of energy (LCOE) can be estimated and used to increase the power output while reducing system operation and maintenance costs. The LCOE is used in order to quantify solar receiver coating influence on the LCOE of solar power towers. Two new parameters are introduced: the absolute levelized cost of coating (LCOC) and the LCOC efficiency. Depending on the material properties, aging, costs, and temperature, the absolute LCOC enables quantifying the cost-effectiveness of absorber coatings, as well as finding optimal operating conditions. The absolute LCOC is investigated for different hypothetic coatings and is demonstrated on Pyromark 2500 paint. Results show that absorber coatings yield lower LCOE values in most cases, even at significant costs. Optimal reapplication intervals range from one to five years. At receiver temperatures greater than 700 C, non-selective coatings are not always worthwhile while durable selective coatings consistently reduce the LCOEdup to 12% of the value obtained for an uncoated receiver. The absolute LCOC is a powerful tool to characterize and compare different coatings, not only considering their initial efficiencies but also including their durability.Published by Elsevier Ltd.

show abstract

Section: Expression Of the Annualized Energymentioning

confidence: 99%

Levelized cost of energy (LCOE) metric to characterize solar absorber coatings for the CSP industry

Boubault

Hall

et al. 2016

Renewable Energy

Self Cite

View full text Add to dashboard Cite

show abstract

“…Excellent thermal stability is also crucial for ensuring solar absorbers to operate properly with efficient solar energy harvesting at elevated temperatures over time. Commercially, TinO x [3] and Pyromark [4] have been used as solar absorbers for low-to high-temperature applications. Spectrally-selective TinOx coatings could absorb 95% of incident solar radiation and emit only 4% thermal radiation, but its performance is optimal only around 100°C.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient selective metamaterial absorber for high-temperature solar thermal energy harvesting

Wang

Sivan²,

Mitchell³

et al. 2015

Solar Energy Materials and Solar Cells

254

131

View full text Add to dashboard Cite

ABSTRACT:In this work, a metamaterial selective solar absorber made of nanostructured titanium gratings deposited on an ultrathin MgF 2 spacer and a tungsten ground film is proposed and experimentally demonstrated. Normal absorptance of the fabricated solar absorber is characterized to be higher than 90% in the UV, visible and, near infrared (IR) regime, while the mid-IR emittance is around 20%. The high broadband absorption in the solar spectrum is realized by the excitation of surface plasmon and magnetic polariton resonances, while the low mid-IR emittance is due to the highly reflective nature of the metallic components. Further directional and polarized reflectance measurements show wide-angle and polarization-insensitive high absorption within solar spectrum. Temperature-dependent spectroscopic characterization indicates that the optical properties barely change at elevated temperatures up to 350°C. The solar-to-heat conversion efficiency with the fabricated metamaterial solar absorber is predicted to be 78% at 100°C without optical concentration or 80% at 400°C with 25 suns, and could be further improved with better fabrication processes and geometric optimization during metamaterial design. The strong spectral selectivity, favorable diffuse-like behavior, and excellent thermal stability make the metamaterial selective absorber promising for significantly enhancing solar thermal energy harvesting in various system at mid to high temperatures.

show abstract

“…However, so far more complex structures and materials show better solar selective properties than intrinsic ones so the main use of these materials is as a component of more complex coatings. The main exception is a proprietary coating known as Pyromark 2500 [76,77] which is used in high temperature receivers and which is reported to survive thousands of heating and cooling cycles to temperatures over 1000 1C and at 600 1C. It has an absorptivity of 0.96 and an emissivity of 0.8 at 800 1C [77] so is not particularly solar selective.…”

Section: Intrinsicmentioning

confidence: 99%