IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at

IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask C2-A, November 9, 2009
Chapter II: New developments in simulations tools and models
A solar desiccant cooling installation model in SPARK,
A transient detailed model of the desiccant wheel.
Paul Bourdoukan
LOCIE FRE CNRS 3220, Institut National de l'Energie Solaire (INES),
Etienne Wurtz
LOCIE FRE CNRS 3220, Institut National de l'Energie Solaire (INES),
The present chapter presents a modelling approach of a solid desiccant air handling unit
powered by vacuum tube solar collectors. It is divided into 3 sections.
In section (1) the model of the installation is described by separately considering each
component (i.e. sensible heat regenerator, desiccant wheel, evaporative coolers, solar
collectors, storage tank).
In the section (2) an experimental validation of the presented model is performed under
different operating conditions on a component level and on a system level.
Section (3) is dedicated for a transient model of the desiccant wheel. Unlike conventional
models that give a mean temperature and a mean humidity ratio at the outlet of the wheel
this detailed transient model gives the temperature and humidity profile at the outlet of the
wheel. The model is then validated experimentally.
The presented models with the experimental validation are a summary of different research
work [1], [2], [3], [4] and [5] published recently and highlighted in the reference section.
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