Flow organization around heat exchanger tube and its influence on heat exchange capability in passive residual heat removal system
- 1. Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing (China)
Description
The convective heat transfer was studied around the heat exchanger tube in the passive residual heat removal system. The flow difference and heat exchange capability were compared around the tubes with and without baffle. The numerical results show that the baffle can optimize the flow inside the heat exchanger tube and improve heat exchange capability. The heat exchange capability, flow resistance and outlet temperature were investigated for the cases without baffle, with baffle and when the baffle has gaps respectively. The results show that the baffle can increase the heat exchange capability by 20% and double the flow resistance. The single gap has little effect on the heat exchange capability, while multi-gap will result in losing some amount of heat transfer rate in heat exchange. (authors)
Additional details
Identifiers
Publishing Information
- Journal Title
- Atomic Energy Science and Technology
- Journal Volume
- 49
- Journal Issue
- 11
- Journal Page Range
- p. 2004-2010
- ISSN
- 1000-6931
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 51018427
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- AFTER-HEAT REMOVAL; BAFFLES; COMPARATIVE EVALUATIONS; HEAT EXCHANGERS; HEAT TRANSFER; NATURAL CONVECTION; RHR SYSTEMS; THERMAL HYDRAULICS
- Descriptors DEC
- CONTROL EQUIPMENT; CONVECTION; COOLING SYSTEMS; ENERGY SYSTEMS; ENERGY TRANSFER; EQUIPMENT; EVALUATION; FLOW REGULATORS; FLUID MECHANICS; HEAT TRANSFER; HYDRAULICS; MASS TRANSFER; MECHANICS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REMOVAL
Optional Information
- Notes
- 12 figs., 10 refs.; http://dx.doi.org/10.7538/yzk.2015.49.11.2004