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From the pages of Nuclear News: Industry update August 2024
Here is a recap of industry happenings from the recent past:
Last Energy forms partnership with NATO center
The NATO Energy Security Center of Excellence (ENSEC COE), located in Vilnius, Lithuania, and Washington, D.C.–based Last Energy have formed a partnership to investigate military applications for microreactor technologies. The agreement was ENSEC COE’s first with a company in the nuclear energy sector. Last Energy, which is a spin-off of the research institute Energy Impact Center, will conduct research with ENSEC COE on microreactor applications for NATO military installations, explore opportunities for deploying microreactors on NATO bases, and serve as an industry advisor to ENSEC COE. Last Energy’s PWR-20 small modular reactor is a pressurized water reactor with a capacity of 20 MWe (60 MWt). It is designed to be built off-site and assembled in modules within a period of 24 months.
M. Cumo, G. E. Farello, J. Gasiorowski, G. Iovino, A. Naviglio
Nuclear Technology | Volume 49 | Number 3 | August 1980 | Pages 337-346
Technical Paper | Reactor | doi.org/10.13182/NT80-A17682
Articles are hosted by Taylor and Francis Online.
Two-phase cross flows have received minor consideration in thermal-hydraulics research, notwithstanding their applications in chemical engineering systems. Many types of heat exchangers and steam generators have, at least in a segment of the flow path, a cross direction of a two-phase mixture to a tube bank even in nuclear plant components. The departure from nucleate boiling (DNB), or the dry-out threshold, is one of the main limits that characterize the whole flow field. For this reason it has been deemed interesting to investigate the influence of quality on DNB heat flux in flow boiling, employing a 9-tube bundle with cross flow of Freon 12. Rather surprisingly, the DNB heat flux rises with quality. The rise has been tested from the pool boiling DNB value as predicted by Lienhard up to a saturation value 20% higher. The law of increase may be reasonably well predicted following the well-known critical heat flux theory of Zuber.