Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

In beyond-design-basis accidents active spent fuel pool cooling by pumps may not be possible. Promising concepts to enhance the reliability of nuclear power plants are passive heat removal systems using air as an unlimited heat sink. However the major drawbacks of such systems are small heat transfer coefficients, particularly on air side. Thus finned tube bundle heat exchangers are used to extend the heat transfer surface. However, conventional heat exchangers are limited in heat transfer capacity. For this purpose an innovative fin design was developed and experimentally investigated. A significant heat transfer enhancement was found for a moderate flow disturbance.