Dynamic modelling of an activated carbon-methanol adsorption refrigeration tube with considerations of interfacial convection and transient pressure process
METADATA ONLY
Loading...
Author / Producer
Date
2012-07
Publication Type
Journal Article, Journal Article
ETH Bibliography
no
Citations
Altmetric
METADATA ONLY
Data
Rights / License
Abstract
In the present study, a dynamic model of the adsorption refrigeration cycle was established with the consideration of interfacial convective heat transfer within adsorbent particles. In the model, a concept and mathematical definition of a transient pressure process at the beginning of the traditionally considered isobaric adsorption process are introduced. The model was solved numerically and experimentally verified in terms of the adsorbent/adsorbate temperature development, system pressure variation, and dynamic adsorption/desorption amount. A temperature jump at the beginning of the adsorption process was experimentally identified and was successfully predicted in the numerical simulation with the introduction of a transient pressure process. Numerical results simulated with the newly introduced transient pressure process and the traditional constant pressure process were compared. The comparison shows that the introduced transient pressure process can significantly improve the accuracy of the presented model. In addition, a notable adsorbate migration phenomenon was discussed according to the abnormal temperature development in the processes of isosteric heating and cooling. The present model can be used for a valve-controlled and long cycle-time based ART and other systems with similar operating procedures.
Permanent link
Publication status
published
Editor
Book title
Journal / series
Volume
95
Pages / Article No.
276 - 284
Publisher
Elsevier
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Adsorption refrigeration tube; Interfacial convection; Transient pressure; Dynamic modelling
Organisational unit
03806 - Carmeliet, Jan / Carmeliet, Jan