Effect of zeolite A coating thickness on adsorption kinetics for heat pump applications

Tatlıer, Melkon; Munz, Gunther; Fueldner, Gerrit; Henninger, Stefan K.

doi:10.1016/j.micromeso.2014.03.017

Cited by 34 publications

(10 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This point has the two state variables loading X and temperature T sorb . The adsorbent temperature T sorb is calculated using the energy balance in Equation (10). The temperature of the carrier plate is T car .…”

Section: Heat Transfer Model For the Loose Grains Configurationmentioning

confidence: 99%

See 1 more Smart Citation

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

et al. 2017

View full text Add to dashboard Cite

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.

show abstract

Section: Heat Transfer Model For the Loose Grains Configurationmentioning

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

View full text Add to dashboard Cite

show abstract

“…The coating application technique influences the coating layer properties, i.e., packing density and the thickness of the layer, contact between support and coating layer. This plays a significant role in the overall heat and mass transfer behavior [6][7][8]. Despite the utmost importance, there are not many experimental analysis methods available in the literature to investigate heat and mass transfer properties of coated systems.…”

Section: Introductionmentioning

confidence: 99%

Heat and Mass Transfer Properties of Zeolite Coatings: Comparison of Reactive‐ and Spray‐Coated Systems

Chanda

Wang

Schwieger

2018

Chemie Ingenieur Technik

View full text Add to dashboard Cite

Coated materials are widely used in the process industry. For the generation of adsorption heat exchangers for heat pumps, coated systems offer compactness, robustness as well as high performance. The heat and mass transfer properties into and through functional coating layers play a prominent role in the overall performance of the whole coated systems. In this contribution, laser flash analysis and sorption measurement methods are applied to compare the heat and mass transfer properties of the common spray coating and reactive coating. The experimental results indicate that the reactive coating technique leads to layers with better heat transfer properties and in contrast to lower mass transfer.

show abstract

“…Der Stofftransport des Arbeitsmittels in der adsorbierten Phase kann nach wie vor leistungslimitierend sein, insb. wenn die Schichtdicke der Adsorbentien zu groß gewählt wird [9]. Geringe Schichtdicken, in denen Transportlimitierungen i.d.R.…”

Section: Introductionunclassified

Wasseradsorption und ‐diffusion in SAPO‐34 für die adsorptive Wärmetransformation

Stallmach

Splith

Chmelik

et al. 2016

Chemie Ingenieur Technik

Self Cite

View full text Add to dashboard Cite

The diffusion of water in SAPO-34 was investigated experimentally in the temperature and loading range relevant for adsorptive heat transformation applications. Corrected diffusivities, which were determined by IR microscopy using adsorptive layers on aluminum supported SAPO-34 during adsorption and desorption and self-diffusion coefficients derived from NMR diffusion studies in thermodynamic equilibrium are found to be consistent to each other. They are both independent of water loading and about two orders of magnitude smaller than the diffusivity of liquid water at the same temperature. The temperature dependence of the water diffusion may be well described by an activation energy of (11 +/- 2)kJmol(-1)

show abstract

Effect of zeolite A coating thickness on adsorption kinetics for heat pump applications

Cited by 34 publications

References 27 publications

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

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

Heat and Mass Transfer Properties of Zeolite Coatings: Comparison of Reactive‐ and Spray‐Coated Systems

Wasseradsorption und ‐diffusion in SAPO‐34 für die adsorptive Wärmetransformation

Contact Info

Product

Resources

About