Non-isothermal adsorption kinetics of water vapour into a consolidated zeolite layer

Dawoud, Belal; Vedder, U.; Amer, E.H.; Dunne, Stephen R.

doi:10.1016/j.ijheatmasstransfer.2006.10.052

Cited by 61 publications

(15 citation statements)

References 12 publications

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“…If the released heat leads to increased temperatures of the adsorbent, its capacity is decreased. [3] Therefore, the design of the adsorber unit is of crucial importance to guarantee fast mass and heat transport. Three different concepts can be distinguished: 1) fine powders distributed in exchangers with large metal surface areas, 2) consolidated powders and 3) compact layers prepared on the heat exchanger walls.…”

Section: Introductionmentioning

confidence: 99%

“…[27][28][29][30] and Mersmann [31,32] have simulated the effects of mass and heat resistances as well as non-isothermal adsorption processes. Models for layered geometries were presented by Knoche and co-workers, [8] Tatlier et al [33] and Dawoud et al [3,23] Kinetic measurements at different adsorptive composite samples at the Fraunhofer Institute for Solar…”

Section: Introductionmentioning

confidence: 99%

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Kinetics of water adsorption in microporous aluminophosphate layers for regenerative heat exchangers

Heyden

Munz

Schnabel

et al. 2009

Applied Thermal Engineering

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Kinetics of water adsorption in microporous aluminophosphate layers for regenerative heat exchangers

Heyden

Munz

Schnabel

et al. 2009

Applied Thermal Engineering

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“…It is worth noting that the concentrations c maP and c miP refer to the vapour phase concentration of the adsorbate. The loading X can also be expressed in terms of the adsorbate concentration c adb as shown in Equation (4). The adsorbate concentration c adb is the concentration of the adsorbed phase.…”

Section: General Mass Transfer Equationsmentioning

confidence: 99%

“…In the last few years, various designs were presented. They can be grouped into three main classes: adsorbent in the form of granules (loose grains configuration) [2,3], binder-based coatings [4][5][6] or adsorbent in form of compact layers, which are directly crystallized on a metal surface [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Advanced Measurement and Simulation Procedure for the Identification of Heat and Mass Transfer Parameters in Dynamic Adsorption Experiments

et al. 2017

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Thermally-driven heat pumps can help to mitigate CO 2 emissions by enhancing the efficiency of heating systems or by driving cooling systems with waste or solar heat. In order to make the thermally-driven systems more attractive for the end consumer, these systems need a higher power density. A higher power density can be achieved by intensifying the heat and mass transfer processes within the adsorption heat exchanger. For the optimization of this key component, a numerical model of the non-isothermal adsorption dynamics can be applied. The calibration of such a model can be difficult, since heat and mass transfer processes are strongly coupled. We present a measurement and simulation procedure that makes it possible to calibrate the heat transfer part of the numerical model separately from the mass transfer part. Furthermore, it is possible to identify the parts of the model that need to be improved. For this purpose, a modification of the well-known large temperature jump method is developed. The newly-introduced measurements are conducted under an inert N 2 atmosphere, and the surface temperature of the sample is measured with an infrared sensor. We show that the procedure is applicable for two completely different types of samples: a loose grains configuration and a fibrous structure that is directly crystallized.

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“…It is known (Llano-Restrepo and Mosquera 2009;Farrell et al 2003;Dawoud et al 2007;Guillemot et al 2008;Caputo et al 2007) that water vapour affects both the adsorption of VOCs and total oxidation reactions on the surfaces of the catalysts. Various phenomena, such as competitive adsorbate adsorption on the active centres, condensation and others, may occur.…”

Section: Introductionmentioning

confidence: 99%

Study of Water Vapour Adsorption on Sandwich-Type CuO/NaX Adsorbent–Catalysts

Jaskunas

Brazlauskas

Kitrys

2010

Adsorption Science & Technology

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Experimental data show that the adsorbent-catalyst CuO/NaX is hydrophilic with a similar water vapour adsorption capacity and adsorption rate to zeolite NaX. Equilibrium parameters were best described by a Freundlich-like equation. BET studies and Kelvin equation calculations confirmed that, at an ambient relative humidity of 37% or higher, water vapour condensation will occur in the prevailing 2.0-2.3 nm pores of the adsorbent-catalyst CuO/NaX. The kinetic parameters for the adsorption of water vapour are presented.

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Non-isothermal adsorption kinetics of water vapour into a consolidated zeolite layer

Cited by 61 publications

References 12 publications

Kinetics of water adsorption in microporous aluminophosphate layers for regenerative heat exchangers

Kinetics of water adsorption in microporous aluminophosphate layers for regenerative heat exchangers

Advanced Measurement and Simulation Procedure for the Identification of Heat and Mass Transfer Parameters in Dynamic Adsorption Experiments

Study of Water Vapour Adsorption on Sandwich-Type CuO/NaX Adsorbent–Catalysts

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