Analysis of SAM Coatings for Dropwise Condensation in Passive Safety Systems
Analysis of SAM Coatings for Dropwise Condensation in Passive Safety Systems
Unger, S.; Sarker, D.; Harm, U.; Hampel, U.
Abstract
Passive safety systems of spent fuel pools are one key technology for further improvement of the reliability of nuclear power plants. These systems transfer high amount of heat, while using air as a heat sink. For that reason the overall temperature differences are small. Since the heat transfer is based on natural convection and gravitational force, the heat transfer resistance of the heat exchangers are high compare to active systems. A Self-Assembled Monolayer (SAM) coating can address both challenges by enable a high compact condensation heat exchanger and by reducing the heat transfer resistance during condensation. Therefore different coating chemicals and surface roughness were analysed, to create the most beneficial heat transfer surface.
Keywords: Passive safety; dropwise condensation; condensation; heat transfer
Involved research facilities
- TOPFLOW Facility
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Lecture (Conference)
47th Annual Meeting on Nuclear Technology, 10.-12.05.2016, Hamburg, Deutschland -
Contribution to proceedings
47th Annual Meeting on Nuclear Technology, 10.-12.05.2016, Hamburg, Deutschland
Proceedings of the 47th Annual Meeting on Nuclear Technology
Permalink: https://www.hzdr.de/publications/Publ-24312