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Prediction of recirculation flow rate for icing prevention in water intake supply systems of nuclear power plants
ID
Halilovič, Miroslav
(
Author
),
ID
Urevc, Janez
(
Author
),
ID
Koc, Pino
(
Author
)
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MD5: 25A195A36C691C215A11B65BB5AF8519
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https://www.sciencedirect.com/science/article/pii/S0165232X18303483?dgcid=author
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Abstract
During winter conditions, water intake structures represent one of many critical parts of hydraulic structures. Frazil ice deposits, accumulates and adhere to trash racks that can, in severe circumstances, completely prevent the water from entering the intake structure. One of the possible ways to cope with frazil ice blockage is by using waste heat of the discharge water, where a portion of the pumped water is recirculated back via a feedback loop to the intake structure. The recirculated water, serving as a heat source, can then somewhat warm the intake water and indirectly the air in the intake structure. In this work, an equation is derived that predicts the temperature of pumped water as a function of the recirculated-to-pumped water ratio and a case study on treating a water intake structure in a nuclear power plant is presented. The example demonstrates that, with a proper ratio between the pumped and recirculated flow rate, the formation of frazil ice and atmospheric icing could both be prevented.
Language:
English
Keywords:
water intakes
,
hydraulic structures
,
cold weather conditions
,
frost prevention
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Publication status:
Published
Publication version:
Author Accepted Manuscript
Year:
2019
Number of pages:
Str. 63-70
Numbering:
Vol. 161
PID:
20.500.12556/RUL-160887-19ac2ea1-1907-3686-bdbe-b94ca491c611
UDC:
621.22(045)
ISSN on article:
0165-232X
DOI:
10.1016/j.coldregions.2019.02.013
COBISS.SI-ID:
16512283
Publication date in RUL:
05.09.2024
Views:
82
Downloads:
27
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Record is a part of a journal
Title:
Cold regions science and technology
Shortened title:
Cold reg. sci. technol.
Publisher:
Elsevier
ISSN:
0165-232X
COBISS.SI-ID:
34862341
Licences
License:
CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:
http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:
The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Secondary language
Language:
Slovenian
Keywords:
vodno zajetje
,
hidravlične konstrukcije
,
preprečevanje zmrzali
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0263
Name:
Mehanika v tehniki
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