Experimental Investigation of an Intensified Heat Transfer Adsorption Bed (IHTAB) Reactor Prototype

Grabowska, Karolina; Żyłka, Anna; Kulakowska, Anna; Skrobek, Dorian; Krzywański, Jarosław; Sosnowski, Marcin; Ciesielska, Katarzyna; Nowak, Wojciech

doi:10.3390/ma14133520

Cited by 21 publications

(7 citation statements)

References 51 publications

(68 reference statements)

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“…An intensified heat transfer adsorption bed (IHTAB) was used in the study (Figure 1) [15]. The facility comprises two primary chambers: the evaporator (12) and the reaction chamber (1).…”

Section: Methodsmentioning

confidence: 99%

“…Additionally, the heater was not inserted into the bed to not disturb the fluidization caused by the steam flow. A detailed description of the facility can be found elsewhere [15].…”

Section: Methodsmentioning

confidence: 99%

“…A more detailed description of the research unit can be found in the paper [15]. It should be noted that in this study, the fluidized bed was not reheated.…”

Section: Methodsmentioning

confidence: 99%

“…However, over time, researchers found a use for low-pressure fluidization in fine chemicals solids and the food and pharmaceutical industry [14]. In the work of Grabowska et al [15], the authors presented research on heat transfer in a fluidized adsorption bed at low pressures. Two types of silica gel were tested.…”

Section: Introductionmentioning

confidence: 99%

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Influence of the Adsorption Bed Composition on the Low-Pressure Fluidization

et al. 2023

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The paper presents an innovative concept of the fluidization of an adsorption bed carried out under low-pressure conditions. Additionally, different bed mixes were used to test the effects of the bed composition on fluidization. Fluidization was caused by the pressure difference and the velocity of the flowing water vapor. These features make the research presented in this article significantly different from other studies known in the literature and constitute the main novelty of the paper. Silica gel with a particle diameter of 200–250 µm (Geldart group B) with aluminum and carbon nanotube additives was fluidized under reduced pressure (10–25 mbar). The pressure difference results in the flow of water vapor and, consequently, induces fluidization. The pressure in the evaporator was approx. 10 mbar, while in the reaction chamber it was approx. 25 mbar. The pressure difference of about 10–15 mbar allows for a flow of water vapor between the evaporator and the reaction chamber. During the tests, the pressures, temperatures and mass were measured. The pressure drop in the bed was closely related to the mass change in the fluidized bed.

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“…An intensified heat transfer adsorption bed (IHTAB) was used in the study (Figure 1) [15]. The facility comprises two primary chambers: the evaporator (12) and the reaction chamber (1).…”

Section: Methodsmentioning

confidence: 99%

“…Additionally, the heater was not inserted into the bed to not disturb the fluidization caused by the steam flow. A detailed description of the facility can be found elsewhere [15].…”

Section: Methodsmentioning

confidence: 99%

“…A more detailed description of the research unit can be found in the paper [15]. It should be noted that in this study, the fluidized bed was not reheated.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of the Adsorption Bed Composition on the Low-Pressure Fluidization

et al. 2023

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“…Moreover, mass sensors, absolute and relative pressure sensors and temperature sensors are installed in both tanks. A detailed description of the experimental test stand is provided in [37].…”

Section: Experimental Test Standmentioning

confidence: 99%

Heat and Mass Transfer Analysis Within a Disc Shaped Fluidized Sorption Reactor

Krzywański

Grabowska

Żyłka

et al. 2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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The depletion of fossil fuels and increased greenhouse gas emissions are crucial factors forcing innovation in various branches of industry and life. In the 21 st -century air conditioning is becoming a necessity in terms of well-being and health. Therefore, adsorption cooling technology constitutes a very promising alternative to energy-consuming and environmentally hazardous vapour compression chillers. The main challenge in the wider popularization of adsorption technology is the intensification of heat and mass transfer within the adsorption bed. Therefore, the paper presents different sorption reactor concepts aimed at solving the aforementioned issue. The main parameters influencing heat and mass transfer for each of the analyzed cases are calculated using the computational fluid dynamics code adapted to capture the specific phenomenon occurring in the adsorption bed. The developed numerical model is validated against the experimental data collected on the test stand dedicated to experimental research of innovative adsorption beds operating in various conditions. The results of numerical modelling with the use of the developed coupled CFD & DEM model concerning the adsorbent particles movement and variation in relative temperature of the adsorbent within the fluidization process are presented in the paper. The research allowed to define the design parameters of the adsorption bed that allow intensifying the heat and mass transfer in the adsorption reactor and, in consequence, significantly contribute to the development and popularization of the adsorption cooling technology.

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