By Angelo Freni, Belal Dawoud, Lucio Bonaccorsi, Stefanie Chmielewski, Andrea Frazzica, Luigi Calabrese, Giovanni Restuccia
This e-book proposes a notably new strategy for characterizing thermophysical and mechanical houses of zeolite-based adsorbent coatings for Adsorptive warmth Transformers (AHT). It provides a constructed common protocol for the total characterization of complex covered adsorbers. supplying an in-depth research of the various tactics important for comparing the functionality of adsorbers, it additionally provides an research in their balance lower than the hydrothermal and mechanical stresses in the course of their complete existence cycle.
Adsorptive warmth Transformers (AHT), specifically adsorption chillers and warmth pumps, are thought of to be promising applied sciences to extend thermal power potency. however, an total elevate in functionality of this gear is critical for them to be thought of a mature know-how for use commercially. improvement of leading edge lined adsorbers should be perceived as a key factor for the enhancement of AHT expertise. This process is dependent upon the deposition, both via a binder or through direct crystallization, of the adsorbent fabric over a steel warmth exchanger, aiming on the development of the warmth move among the exterior warmth resource and the adsorbent itself.
This publication bargains a priceless source to these engaged on the improvement of novel adsorbent fabrics and complex adsorbent beds for heating and cooling functions. it's also meant for researchers attracted to renewable power and effort potency.
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Additional info for Characterization of Zeolite-Based Coatings for Adsorption Heat Pumps
In the gravimetric method, the buoyancy correction must normally be applied, which involves the determination of the volume occupied by sample. Recently, Henninger et al. proposed in  a standardized procedure for determination of the water adsorption equilibrium on adsorption materials to be used in an adsorption heat pump or chiller. The procedure consists of a pre-treatment of the sample under continuous evacuation (vacuum level: 1e−4 kPa). The optimal sample pre-treatment temperature should be selected according to the following classiﬁcation.
Aristov YI, Tokarev MM, Cacciola G, Restuccia G (1996) Selective water sorbents for multiple applications, 1. CaCl2 conﬁned in mesopores of silica gel: sorption properties. React Kinet Catal Lett 59(2):325–333 16. Aristov YI, Tokarev MM, Parmon VN, Restuccia G et al (1999) New working materials for sorption cooling/heating driven by low temperature heat: properties. In: Proceedings of international sorption heat pump conference, Munich, Germany, pp 247–254 17. Aristov YI, Restuccia G, Cacciola G, Parmon VN (2002) A family of new working materials for solid sorption air conditioning systems.
By approaching the end of the desorption-condensation process, the condenser starts to be able to condense all refrigerant vapor being desorbed, which results in reducing the pressure once more until it approaches the saturation pressure by the end of the desorption process (state point III on Fig. 11). The heat required to drive the real adsorption heat pump cycle shall differ from that expressed by Eq. 11) by ﬁrst adding the heat capacity of the adsorber heat 1 Basics of Adsorption … 24 exchanger including its heat transfer medium’s content to the ﬁrst sensible heat part.