Influence of Various Factors on Damage to Steam-Generator Tubes in Nuclear Power Plants with VVÉR Reactors

Oleinik, S. G.

doi:10.1023/b:aten.0000041206.05191.43

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2016

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“…The material used for the heat-transfer pipes and the physicochemical properties of the metal used in the components of the second-loop equipment of a nuclear power plant also affect deposit of fouling [23]. The formed deposits and sludge can be removed from the heat exchangers by chemical and mechanical means , and combinations of chemical and mechanical cleaning can be superior to mechanical cleaning alone for certain combinations of parameters [24].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of sub-cooled boiling flow with fouling deposited inside channels

Liu

Zhang²,

Lü

et al. 2016

Applied Thermal Engineering

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Abstract:In this article, a numerical simulation has been performed to investigate the sub-cooled boiling flow in axisymmetric channels using the two-phase particle model. The equivalent diameter of the channel is 4.38 mm with 365.7 cm in length. The fouling deposited layer is filled with The Nusselt number in the fouling region without fouling deposited could be 50 times higher than that with fouling layer. The heat transfer performance of the channel with thickness of 0.225 mm fouling deposit layer is 5 times larger than that with thickness of 1.55 mm fouling deposit layer. It is also found that the inlet velocity has significant impact on the boiling and total pressure drops along the channel. Keywords

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Section: Introductionmentioning

confidence: 99%