Publication Details |
Category | Text Publication |
Reference Category | Journals |
Title (Primary) | Migrating temperature "thermo-chromatographic" pulses (TCP) initiated by radio-frequency (RF) heating |
Author | Kraus, M.; Kopinke, F.-D.; Roland, U. |
Journal | Journal of Microwave Power and Electromagnetic Energy |
Year | 2012 |
Department | TUCHEM |
Volume | 46 |
Issue | 4 |
Page From | 241 |
Page To | 252 |
Language | englisch |
Keywords | Radio frequency; selective heating; thermo-chromatographic pulse; zeolite |
Abstract | In the present study, the astonishing influence of water dosage on a purged dry packed bed of NaY zeolite in the presence of an electric field with a frequency of 13.56 MHz was investigated. The injection of a small amount of water to the inlet of the bed led to pronounced selective heating of the inlet zone by more than 150 K. Thus, water represented a very effective coupling medium for dielectric heating. The selectively heated zone then slowly moved through the whole packed bed and a water pulse finally left the zeolite. This effect correlated with a coupled water and heat flux was called thermo-chromatographic pulse (TCP) emphasizing its analogy to chromatography. The phenomenon could not be performed by using conventional (convective) or microwave heating. It was demonstrated under various conditions and explained by a new model based on own experimental results as well as data from literature. The model will be the objective of a forthcoming publication. |
Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=13200 |
Kraus, M., Kopinke, F.-D., Roland, U. (2012): Migrating temperature "thermo-chromatographic" pulses (TCP) initiated by radio-frequency (RF) heating J. Microw. Power Electromagn. Energy 46 (4), 241 - 252 |