Selective water sorbents for multiple applications, 1. CaCl2 confined in mesopores of silica gel: Sorption properties

Aristov, Yu. I.; Tokarev, M. M.; Cacciola, G.; Restuccia, G.

doi:10.1007/bf02068130

Cited by 205 publications

(97 citation statements)

References 5 publications

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“…Several other analytical studies on impregnation of calcium chloride on various host matrices have been done for heat storage purpose: iron silicate [141], silica gel [98,113,139,140,145,146], active carbon [145], bentonite [99,144], MCM-41 [128]. However, upscaling experiments to lab-scale experiments are rare because of less reaction of rate or less cycle stability.…”

Section: The Use Of Cacl 2 For Thermochemical Energy Storagementioning

confidence: 99%

A review on the use of calcium chloride in applied thermal engineering

N’Tsoukpoe¹,

Rammelberg²,

Fopah-Lele³

et al. 2015

Applied Thermal Engineering

114

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Section: The Use Of Cacl 2 For Thermochemical Energy Storagementioning

confidence: 99%

A review on the use of calcium chloride in applied thermal engineering

N’Tsoukpoe¹,

Rammelberg²,

Fopah-Lele³

et al. 2015

Applied Thermal Engineering

114

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“…The first step towards defining the proper grain size is to study the sorption kinetics on one layer of loose pellets under typical working conditions of AHPs. has introduced and applied a constant volume-variable pressure setup to measure the adsorption kinetics of loose pellets of two porous host materials (meso-porous silica gel KSK and alumina A1) in comparison with the two selective water sorbent (SWS) composites namely, SWS-1L and SWS-1A (Aristov et al, 1996) formed by impregnating these two host matrices with CaCl 2 . have applied the same setup to investigate the grain size effect on the adsorption kinetics of SWS-1L.…”

Section: Introductionmentioning

confidence: 99%

On the Effect of Grain Size on the Kinetics of Water Vapor Adsorption and Desorption into/from Loose Pellets of FAM-Z02 under a Typical Operating Condition of Adsorption Heat Pumps

Dawoud

2007

J. Chem. Eng. Japan

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The kinetics of water vapor adsorption/desorption under quasi isobaric conditions have been studied on one layer of loose pellets of FAM-Z02 placed on a metal plate. Temperature of the sample holding plate has been changed as it takes place in real adsorption heat pumps (AHPs), while the vapor pressure over the adsorbent was maintained almost constant (saturation pressures corresponding to an evaporator temperature of 5°C and a condenser temperature of 35°C). Adsorption-and desorption-end temperatures have been adjusted to 35 and 90°C, respectively. Measurements have been carried out on grains having the following size distributions: 0.7 to 1.0 mm, 1.4 to 1.6 mm and 2.0 to 2.6 mm. An average equilibrium differential water loading of 19.2 g/100 g has been measured during desorption compared to 16.4 g/100 g during adsorption. The adsorption/desorption rates have been characterized by the times required to reach 50, 80 and 90% of the equilibrium loading. It has been found that the adsorption kinetics are mainly dominated by inter-crystalline diffusion, while the desorption kinetics are mostly influenced by surface resistance to the heat and mass transfer. Average specific evaporator cooling/condenser heating capacities in the order of 1 kW/kg have been estimated for the grain size 0.7 to 1.0 mm, putting in evidence the possibility of developing highly compacted AHPs with FAM-Z02 for heating and cooling applications. The influencing parameters on the combined heat and mass transfer process have been discussed.

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“…Analysis of water vapour sorption data of the various composites was performed (Figure 2(a)) (Gordeeva et al, 1998(Gordeeva et al, , 2002a(Gordeeva et al, , 2003Aristov et al, 1996). Unfortunately, it was found that the sorption properties of all composites studied did not meet the particular requirement of the AC cycle considered.…”

Section: Composite Sorbents Salt In Mesoporous Matrixmentioning

confidence: 99%

Adsorptive Air Conditioning Systems Driven by Low Temperature Energy Sources: Choice of the Working Pairs

Gordeeva

Freni

Restuccia

et al. 2007

J. Chem. Eng. Japan

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The performance of an adsorptive air-conditioning cycle driven by low temperature heat (80-85°C) was studied. The analysis rested on the Polanyi potential theory and took into account literature and author's experimental data on sorption equilibrium of various conventional and innovative adsorbents with water and methanol as working fluids. This adsorbent screening is aimed at evaluating the optimal working pairs for this application. The composite sorbent of methanol Lithium Chloride in mesoporous silica gel and the adsorbent of water FAM-Z02 were selected as challenging pairs for severe conditions of heat rejection typical for solar cooling in hot countries and air conditioning in cars.

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Selective water sorbents for multiple applications, 1. CaCl2 confined in mesopores of silica gel: Sorption properties

Cited by 205 publications

References 5 publications

A review on the use of calcium chloride in applied thermal engineering

A review on the use of calcium chloride in applied thermal engineering

On the Effect of Grain Size on the Kinetics of Water Vapor Adsorption and Desorption into/from Loose Pellets of FAM-Z02 under a Typical Operating Condition of Adsorption Heat Pumps

Adsorptive Air Conditioning Systems Driven by Low Temperature Energy Sources: Choice of the Working Pairs

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