Investigations on single-phase natural circulation loop dynamics. Part 3: Role of expansion tank
| Autor: | J.B. Doshi, Kannan N. Iyer, Pallippattu Krishnan Vijayan, Kumar Naveen |
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| Rok vydání: | 2015 |
| Předmět: |
Natural Circulation
Behavior Materials science Flow Hysteresis Flow (psychology) Instability Energy Engineering and Power Technology Thermodynamics Expansion tank Mechanics Expansion Tank Physics::Fluid Dynamics Loop (topology) Natural circulation Nuclear Energy and Engineering Heat exchanger Stability Characteristics Single-Phase Transient (oscillation) Safety Risk Reliability and Quality Stability Waste Management and Disposal |
| Zdroj: | Progress in Nuclear Energy. 78:65-79 |
| ISSN: | 0149-1970 |
| DOI: | 10.1016/j.pnucene.2014.08.007 |
| Popis: | Expansion tank is an important component of all single-phase natural circulation loops. The tank serves the twin purposes of venting the air out during the loop filling and accommodation of the swells and shrinkages of the loop fluid during the transient. In the present study, experimental investigations have been carried out in a rectangular single-phase natural circulation loop to bring out the role of expansion tank in loop dynamics. The results on loop stability and transient behavior are discussed. The experimental investigations show that there is significant amount of heat exchange between the main loop fluid and the expansion tank fluid. First, the results of experimental studies are presented. The different flow regimes observed in these experimental investigations are discussed. Next, a model is presented for taking into account the heat exchange between the main loop fluid and the expansion tank fluid. Finally, the model is applied to simulate the dynamic behavior of different single-phase natural circulation loops. The investigations carried out in this study have helped in resolving the issue of hysteresis observed in these loops. (C) 2014 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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