Water adsorption dynamics on representative pieces of real adsorbers for adsorptive chillers

Santamaria, Salvatore; Aristov, Yu. I.; Frazzica, Andrea; Freni, Angelo; Girnik, Ilya S.

doi:10.1016/j.apenergy.2014.07.053

Cited by 81 publications

(21 citation statements)

References 36 publications

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“…The observed exponential functions do not have a strong theoretical basis. Exponential decay/ 285 recovery has been observed in [8,9,13,18,24] with adsorbents on a flat, isothermal surface rather than 286 between fins, and then more recently in finned systems [12]. Approximately linear kinetics in grains were 287 first proposed by Gluekauf [25] (e.g.…”

Section: Discussion 272mentioning

confidence: 96%

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Calorimetric measurements of the dynamics of a finned adsorbent: early assessment of the activated carbon cloth–ethanol pair with prismatic aluminium fins

Tierney

Ketteringham

Selwyn

et al. 2016

Applied Thermal Engineering

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Section: Discussion 272mentioning

confidence: 96%

“…It offers a means of tackling relatively large samples of adsorbent -350 alongside gravimetric methods recently developed in [11,12]. The test is extended to a different , 351 adsorbent-adsorptive pair, and tackles finned samples.…”

Section: Conclusion 347 348mentioning

confidence: 99%

Calorimetric measurements of the dynamics of a finned adsorbent: early assessment of the activated carbon cloth–ethanol pair with prismatic aluminium fins

Tierney

Ketteringham

Selwyn

et al. 2016

Applied Thermal Engineering

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“…Many experimental investigations on the performance of adsorbent beds in combination with finned tubes or lamella heat exchangers have been done [8][9][10][11]. Other authors propose to use commercially available plate-fin heat exchangers [12][13][14]. An overview on different concepts is given by Sharafian and Bahrami [15].…”

Section: Introductionmentioning

confidence: 99%

A New Adsorbent Composite Material Based on Metal Fiber Technology and Its Application in Adsorption Heat Exchangers

et al. 2015

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Abstract:In order to achieve process intensification for adsorption chillers and heat pumps, a new composite material was developed based on sintered aluminum fibers from a melt-extraction process and a dense layer of silico-aluminophosphate (SAPO-34) on the fiber surfaces. The SAPO-34 layer was obtained through a partial support transformation (PST) process. Preparation of a composite sample is described and its characteristic pore size distribution and heat conductivity are presented. Water adsorption data obtained under conditions of a large pressure jump are given. In the next step, preparation of the composite was scaled up to larger samples which were fixed on a small adsorption heat exchanger. Adsorption measurements on this heat exchanger element that confirm the achieved process intensification are presented. The specific cooling power for the adsorption step per volume of composite is found to exceed 500 kW/m 3 under specified conditions. OPEN ACCESSEnergies 2015, 8 8432

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“…These dependencies can be revealed with experimental and simulative studies. A common method to analyze heat exchanger configurations without building the whole heat exchanger is the characterization of small, but representative pieces of an adsorption heat exchanger [2,13,14]. One pathway is the purely experimental study as carried out by Aristov et al [2] or Girnik and Aristov [13] for a loose grains configuration.…”

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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Water adsorption dynamics on representative pieces of real adsorbers for adsorptive chillers

Cited by 81 publications

References 36 publications

Calorimetric measurements of the dynamics of a finned adsorbent: early assessment of the activated carbon cloth–ethanol pair with prismatic aluminium fins

Calorimetric measurements of the dynamics of a finned adsorbent: early assessment of the activated carbon cloth–ethanol pair with prismatic aluminium fins

A New Adsorbent Composite Material Based on Metal Fiber Technology and Its Application in Adsorption Heat Exchangers

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

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