Refine your search�ソスF     
Report No.
 - 

Analysis of natural circulation charactristic in middle size ATR

not registered; not registered

Present nuclear power reactor adopts a forced circulation system. But, the natural circulation studies for light water reactor are recently preceeding. So, on purpose to examine possibility of ATR natural circulation reactor in 1000Mwt class, we evaluated the natural flow and core cooling characteristic for ATR. In this study, the sensitivity analyses for the natural circulation characteristic by change inlet pipe diameter, outlet pipe diameter, core length, and downcomer pipe height were executed. Then the sensitivities are as follows. (1)Influence of inlet pipe diameter. From analyses of the case which was executed using 3B as inlet pipe diameter, against using 2B in the base case, it was clarified that channel flow of the case using 2B is more stable than that of the another. (2)Influence of outlet pipe diameter. From analyses of the cases which were executed using 4B and 5B as outlet pipe diameter, against using 3B in the base cases, it was clarified that the cases using pipes of a large diameter have more natural flow than the other cases, because of decreasing pressure loss at outlet pipes. (3)Influence of core length. From analyses of the cases which were executed using 3.2m and 2.7m as core length, against using 3.7m in the base case, it was clarified that the cases using short core length have more natural flow than the other cases, because of decreasing pressure loss at the core. (4)Influence of downcomer height. From analyses of the cases which were executed using 20m and 30m as downcomer against using 15m in the base case, it was clarified that the cases using high downcomer height have more natural flow than the other cases, because of increasing driving head which is the diferential pressure between the core and the downcomer. And, from the analyses results of (1) to (4), it was crarified that the item of the most largest sensitivity was downcomer height. And then, using the combination which have most natural circulation flows for ...

Acecsses

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.