Probing the spectrally selective property of NbB2‐based tandem absorber coating for concentrated solar power application

Author(s):  
Ranjith Kumar Poobalan ◽  
Mahander Pratap Singh ◽  
Bikramjit Basu
Energy ◽  
2019 ◽  
Vol 180 ◽  
pp. 480-494 ◽  
Author(s):  
M. Monjurul Ehsan ◽  
Sam Duniam ◽  
Jishun Li ◽  
Zhiqiang Guan ◽  
Hal Gurgenci ◽  
...  

Author(s):  
Bruce A. Pint ◽  
Bruce N. Anderson ◽  
Wendy J. Matthews ◽  
Chris M. Waldhelm ◽  
William Treece

A NiCrAl-type foil (alloy 214) was selected for evaluation for heat exchanger applications for a concentrated solar power (CSP) system. Due to the formation of a protective alumina surface oxide, this class of alloys can operate at higher temperatures than conventional stainless steels or even Ni-base alloys, such as alloy 625. Laboratory testing is being conducted at 1000° and 1050°C in dry air using 10 h thermal cycles in order to simulate the CSP duty cycle at a high temperature to accelerate the degradation process. Mass change data showed indications of degradation of the foils with exposures up to 8,000 h. Foil specimens also were stopped after 2,400 h to measure the loss of Al in the foil as a method to predict lifetime. Previous lifetime modeling results for 1h cycles in air with 10%H2O provided an initial basis to predict lifetime for this material to >100,000 h operating times as a function of foil thickness and exposure temperature for this application.


2017 ◽  
Vol 8 (4) ◽  
pp. 1-19
Author(s):  
Oliveira Helio Marques de ◽  
◽  
Giacaglia Giorgio Eugenio Oscare ◽  

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