SAPO-34 coated adsorbent heat exchanger for adsorption chillers
作者： Angelo Freni , Lucio Bonaccorsi , Luigi Calabrese , Angela Caprì , Andrea Frazzica
DOI: 10.1016/J.APPLTHERMALENG.2015.02.052
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摘要: Abstract In this work, adsorbent coatings on aluminum surfaces were prepared by dip-coating method starting from a water suspension of SAPO-34 zeolite and silane-based binder. Silane-zeolite morphology surface coverage grade evaluated scanning electron microscopy. Adhesive mechanical properties peel, pull-off, impact micro-hardness tests, confirming the good interaction between metal substrate, binder zeolite. Adsorption equilibrium kinetics vapour adsorption coating studied in range T = 30–150 °C pH2O = 11 mbar using CAHN 2000 thermo-balance. It was found that, investigated conditions, organic doesn't affect capacity original Subsequently, applied finned flat-tubes heat exchanger realizing full-scale AdHEx with an uniform 0.1 mm thick metal/adsorbent mass ratio = 6. The cooling realized coated measured lab-scale chiller under realistic operating conditions for air conditioning applications. produced up to 675 W/kgads specific power cycle time 5 min. stability adsorber subjected 600 sorption cycles successfully verified.
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