Non-condensable gas plugging and mixing behavior in PWR steam generator tubes during reflux condensation

Filip Janasz, Horst Michael Prasser, Detlef Suckow, Marton Szogradi

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

In this paper we investigated reflux condensation in a single pressurized water reactor steam generator tube in the presence of non-condensable gases. We observed the gas plug formation, behavior and impact on heat removal under thermo-hydraulic conditions typical for the LOCA stage during which the reflux condenser regime is characteristic. We used nitrogen and helium to observe differences of the plug behavior for heavy and light gases. Measurements reveal that the non-condensable gas type plays a crucial role in the plug formation. Light gas (He) forms sharp and narrow interface and limits condensation efficiently while heavy gas (N2) develops wide, diffuse interface with gradual temperature drop.

Original languageEnglish
Title of host publication26th International Conference on Nuclear Engineering
Subtitle of host publicationThermal-Hydraulics and Safety Analyses
PublisherAmerican Society of Mechanical Engineers ASME
Number of pages10
Volume6B
ISBN (Print)978-0-7918-5149-4
DOIs
Publication statusPublished - Nov 2018
MoE publication typeNot Eligible
Event26th International Conference on Nuclear Engineering, ICONE 2018 - London, United Kingdom
Duration: 22 Jul 201826 Jul 2018
Conference number: 26

Conference

Conference26th International Conference on Nuclear Engineering, ICONE 2018
Abbreviated titleICONE 2018
CountryUnited Kingdom
CityLondon
Period22/07/1826/07/18

Fingerprint

Steam generators
Condensation
Gases
Loss of coolant accidents
Pressurized water reactors
Helium
Hydraulics
Nitrogen

Cite this

Janasz, F., Prasser, H. M., Suckow, D., & Szogradi, M. (2018). Non-condensable gas plugging and mixing behavior in PWR steam generator tubes during reflux condensation. In 26th International Conference on Nuclear Engineering: Thermal-Hydraulics and Safety Analyses (Vol. 6B). [ICONE26-82350] American Society of Mechanical Engineers ASME. https://doi.org/10.1115/ICONE26-82350
Janasz, Filip ; Prasser, Horst Michael ; Suckow, Detlef ; Szogradi, Marton. / Non-condensable gas plugging and mixing behavior in PWR steam generator tubes during reflux condensation. 26th International Conference on Nuclear Engineering: Thermal-Hydraulics and Safety Analyses. Vol. 6B American Society of Mechanical Engineers ASME, 2018.
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Janasz, F, Prasser, HM, Suckow, D & Szogradi, M 2018, Non-condensable gas plugging and mixing behavior in PWR steam generator tubes during reflux condensation. in 26th International Conference on Nuclear Engineering: Thermal-Hydraulics and Safety Analyses. vol. 6B, ICONE26-82350, American Society of Mechanical Engineers ASME, 26th International Conference on Nuclear Engineering, ICONE 2018, London, United Kingdom, 22/07/18. https://doi.org/10.1115/ICONE26-82350

Non-condensable gas plugging and mixing behavior in PWR steam generator tubes during reflux condensation. / Janasz, Filip; Prasser, Horst Michael; Suckow, Detlef; Szogradi, Marton.

26th International Conference on Nuclear Engineering: Thermal-Hydraulics and Safety Analyses. Vol. 6B American Society of Mechanical Engineers ASME, 2018. ICONE26-82350.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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Janasz F, Prasser HM, Suckow D, Szogradi M. Non-condensable gas plugging and mixing behavior in PWR steam generator tubes during reflux condensation. In 26th International Conference on Nuclear Engineering: Thermal-Hydraulics and Safety Analyses. Vol. 6B. American Society of Mechanical Engineers ASME. 2018. ICONE26-82350 https://doi.org/10.1115/ICONE26-82350