||W. Mittelbach, UFE SOLAR GmbH and Fraunhofer Institute for Solar Energy Systems (ISE),
F. Seewald, A. Pollei, M. Kraume, Technical University of Berlin
F. Seewald, A. Pollei, M. Kraume, W. Mittelbach, J. Lang, Numerical Calculation of the Heat Transfer
in an Adsorption Energy Storage with KARDOS, Report SC-99-04 (1999), Konrad-Zuse-Zentrum.
The common application for active thermal solar systems is the supply of
buildings with hot water. The main obstacle for heating purposes is the gap
between summer, when the major amount of energy can be collected, and
winter, when the heating energy is required. This demands the application of a seasonal
energy storage with small heat loss over a long time and well
defined load and unload behavior. For that purpose a new technique has been developed,
which is based on the heat of adsorption resp. desorption of stream on silicagel (Mittelbach
et. al, 1997). The load of water on the gel is a function of H2O partial
pressure and temperature.
For understanding and predicting the operation behavior of the adsorption
storage the temperature field and vapor density field in the bed have to be
First computations with KARDOS can be found in the report cited above.
For further informations about the sorption technology see
New Concepts for Building Heating with Sorption Technology
(Fraunhofer Institute Solare Energiesysteme)
Sorptionsspeicher - Saisonale Wärmeleitung für
die solare Raumheizung
(UFE SOLAR GmbH).
Last update: July 2007
© 2007 by Konrad-Zuse-Zentrum für Informationstechnik Berlin (ZIB)