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Investigation of the Aerodynamics of the Main Building of NPP with a Reactor Equipped with a Passive Heat-Removal System
The results of an investigation of the aerodynamic action of wind on the operation of the heat-exchangers of a passive system removing heat to atmospheric air are presented. The object of the investigation is the main building of Novovoronezh NPP-2. The investigations were performed at the Institute...
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Published in: | Atomic energy (New York, N.Y.) N.Y.), 2014-06, Vol.116 (2), p.92-99 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | The results of an investigation of the aerodynamic action of wind on the operation of the heat-exchangers of a passive system removing heat to atmospheric air are presented. The object of the investigation is the main building of Novovoronezh NPP-2. The investigations were performed at the Institute for Physics and Power Engineering on an aerodynamic setup with maximum air flow rate in the loop 80·10
3
m
3
/h. The linear scale of the model is 1:200. In the experiments the pressure distribution was measured at several points: on the outer surface of the containment vessel of the reactor, at the locations of the air intakes of the heat-exchangers of the passive heat-removal system, inside the top deflector and the pressure drop along the air ducts of the heat exchangers of the passive heat-removal system for all possible directions and speeds of the wind. The investigation was conducted for constant air temperature and a one-dimensional velocity field in the air flow. The influence of a gradient velocity profile was judged according to the results obtained with a two-step profile of the velocity in the air flow. The experiments validated the technical decisions ensuring that the operation of the passive heat-removal system in the VVER at Novovoronezh NPP-2 is independent of the wind speed and direction. |
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ISSN: | 1063-4258 1573-8205 |
DOI: | 10.1007/s10512-014-9824-1 |