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Two-Stage Air-Dehumidification System for the Tropics - Assessment of Conceptual System Configurations

Safizadeh, M. Reza; Morgenstern, Alexander; Bongs, Constanze; Henning, Hans-Martin; Luther, Joachim

Abstract (englisch):
Under tropical climate conditions, conventional air-conditioning systems consume a considerable amount of
electricity in order to get rid of the high latent load (humidity) of the ambient air. This is due to the applied
simultaneous dehumidification and cooling processes. Therefore, an idea of a separate handling of the latent
and the sensible loads is investigated by applying series connected heat powered dehumidification and
electricity powered cooling systems. A two-stage dehumidification system including a membrane-based heat
and mass exchanger and an Evaporatively COoled Sorptive dehumidification system (ECOS system) is
proposed to dehumidify the ambient air; the sensible load (cooling of dehumidified air) is handled by an
efficient conventional cooling process operating at relatively high evaporation temperatures (14 െ 20 Ԩ).
The aim of this study is to evaluate different conceptual system configurations and to find optimized systems
for tropical climate conditions (air humidity and temperature are in the order of 20 g୴/kgୟ୧୰ and 32 Ԩ,
respectively) by means of simulation calculations. The dehumidification capacity, the total specific removed
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Zugehörige Institution(en) am KIT Fachgebiet Strömungsmaschinen (FSM)
Institut Entwerfen und Bautechnik (IEB)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2015
Sprache Englisch
Identifikator ISBN: 978-3-9814659-3-8
KITopen-ID: 1000068936
Erschienen in International Conference on Solar Energy and Buildings (EuroSun) , Aix-les-Bains, France, 16 - 19 September 2014. Ed.: E. Frank
Verlag International Solar Energy Society, Freiburg
Seiten 1 CD-ROM
Schlagwörter Two-stage air-dehumidification; membrane-based heat and mass exchanger; ECOS system; adsorption system; tropical climate.
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