Wind effects on the performance of the reactor vessel auxiliary cooling system

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dc.contributor.author Tzanos, CP en
dc.contributor.author Hunsbedt, A en
dc.date.accessioned 2014-03-01T01:44:57Z
dc.date.available 2014-03-01T01:44:57Z
dc.date.issued 1996 en
dc.identifier.issn 00295450 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/24530
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-0030104795&partnerID=40&md5=ee51b890f847f1bb777bd01cc8f5ff30 en
dc.subject Decay heat removal en
dc.subject Passive safety systems en
dc.subject Wind effects en
dc.subject.other Aerodynamics en
dc.subject.other Density (specific gravity) en
dc.subject.other Ducts en
dc.subject.other Effects en
dc.subject.other Heat transfer en
dc.subject.other Liquid metal cooled reactors en
dc.subject.other Pressure effects en
dc.subject.other Wakes en
dc.subject.other Air density en
dc.subject.other Air inlets en
dc.subject.other Decay heat removal en
dc.subject.other Natural circulation en
dc.subject.other Peak cladding temperature en
dc.subject.other Pressure distribution en
dc.subject.other Pressure loss en
dc.subject.other PRISM concept en
dc.subject.other Reactor vessel auxiliary cooling system en
dc.subject.other Stacks en
dc.subject.other Cooling systems en
dc.title Wind effects on the performance of the reactor vessel auxiliary cooling system en
heal.type journalArticle en
heal.publicationDate 1996 en
heal.abstract The performance of the reactor vessel auxiliary cooling system (RVACS) of a liquid-metal reactor is a function of the pressure difference between the cooling air inlet and outlet, of the air density variation along the flow path, and of the pressure loss and heat transfer characteristics of this path. The pressure difference between the air inlet and outlet as well as the RVACS inlet temperature may be affected by wind speed and direction. The objective of this work was to analyze the effects of wind on the performance of the RVACS of an advanced liquid metal reactor design based on the PRISM concept. Each stack of the reference RVACS design had two air inlets. The analysis showed that one particular wind direction had the most adverse impact on the RVACS performance. For this direction, in a two-inlet stack design, the net effect of a 27 m/s (60 mph) wind on the RVACS airflow would be a reduction of ∼15%; while in a four-inlet design, the net effect would be nearly zero. A 15% reduction in the RVACS airflow would increase the peak cladding temperature by ∼15°C. In reality, however, the wind direction fluctuates around an average direction, and the most adverse wind effect should be <15°C. The temperature at the inlet of the downwind stacks is affected by the outflow of the upwind stacks, but the effect is small. For an air temperature change of 164°C along the RVACS flow path, the maximum inlet temperature rise is ∼5°C. This would increase the peak cladding temperature by ∼1°C. en
heal.journalName Nuclear Technology en
dc.identifier.volume 113 en
dc.identifier.issue 3 en
dc.identifier.spage 249 en
dc.identifier.epage 267 en

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