Performance of silica gel-water solar adsorption cooling system

This article presents the dynamic behaviors of two bed adsorption chiller utilizing the composite adsorbent “immobilization of NH2, -NO2, -OH groups to MiL-101(Cr)” as adsorbent and water as adsorbate, which is based on the experimentally confirmed adsorption isotherms and kinetics data. The experimentally measured MOFs + water based isotherms and kinetics data are fitted with adsorption isotherm models and linear driving force kinetics equations. Compared with the experimental data of conventional adsorption chiller based on zeolites/silica gel-water system, we found that the newly working pair provides better cooling capacity and performances in terms of COP and adsorption bed size. From numerical simulation, it is also found that the cooling capacity can be increased up to 20 percent of the parent silica gel-water adsorption chiller and the COP can be improved up to 25% more at optimum conditions.

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Numerical Investigation of Silica Gel-Water Solar Adsorption Cooling System with Simulink

American Journal of Applied Sciences ◽

10.3844/ajassp.2017.786.794 ◽

2017 ◽

Vol 14 (8) ◽

pp. 786-794

Author(s):

Ghilen Najeh ◽

Messai Souad ◽

Gabsi Slimane ◽

El Ganaoui Mohammed ◽

Benelmir Riad

Keyword(s):

Numerical Investigation ◽

Silica Gel ◽

Cooling System ◽

Adsorption Cooling System

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Computational Fluid Dynamics Modelling and Experimental Study on a Single Silica Gel Type B

Modelling and Simulation in Engineering ◽

10.1155/2012/598479 ◽

2012 ◽

Vol 2012 ◽

pp. 1-9 ◽

Cited By ~ 1

Author(s):

John White

Keyword(s):

Fluid Dynamics ◽

Computational Fluid Dynamics ◽

Silica Gel ◽

Water Adsorption ◽

Cooling System ◽

Adsorption Rate ◽

Type B ◽

Temperature Heat ◽

Dynamics Modelling ◽

Adsorption Cooling System

The application of computational fluid dynamics (CFDs) in the area of porous media and adsorption cooling system is becoming more practical due to the significant improvement in computer power. The results from previous studies have shown that CFD can be useful tool for predicting the water vapour flow pattern, temperature, heat transfer and flow velocity and adsorption rate. This paper investigates the effect of silica gel granular size on the water adsorption rate using computational fluid dynamics and gravimetric experimental (TGA) method.

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A CFD Simulation on How the Different Sizes of Silica Gel Will Affect the Adsorption Performance of Silica Gel

Modelling and Simulation in Engineering ◽

10.1155/2012/651434 ◽

2012 ◽

Vol 2012 ◽

pp. 1-12

Author(s):

John White

Keyword(s):

Fluid Dynamics ◽

Computational Fluid Dynamics ◽

Silica Gel ◽

Cfd Simulation ◽

Cooling System ◽

Adsorption Rate ◽

Temperature Heat ◽

Computational Fluid Dynamics Cfd ◽

Adsorption Cooling System ◽

Transfer Flow

The application of computational fluid dynamics (CFD) in the area of porous media and adsorption cooling system is becoming more practical due to the significant improvement in computer power. The results from previous studies have shown that CFD can be useful tool for predicting the water vapour flow pattern, temperature, heat transfer, flow velocity, and adsorption rate. This paper investigates the effect of silica gel granular size on the water adsorption rate using computational fluid dynamics.

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