Effects of the thickness and particle size of silica gel on the heat and mass transfer performance of a silica gel-coated bed for air-conditioning adsorption systems

CFD Simulation and Experimental Analyses of a Copper Wire Woven Heat Exchanger Design to Improve Heat Transfer and Reduce the Size of Adsorption Beds

“…Heating and cooling water tanks are used to provide the adsorption bed, condenser and evaporator with water at the desired temperatures. During the desorption stage of the cycle, the adsorption bed is heated to the temperature (80 °C) while the condenser is kept at 25 °C [1,[4][5][6][7][8][9][10][11][12][13][14][15][16][17]. During the adsorption stage of the cycle, the adsorption bed is cooled down to 25 °C and the evaporator to 15 °C [14,10].…”

“…Mass transfer restrictions are also significant in manipulating the performance of this cooling technology [2][3][4][5][6]. It is of late that computational fluid dynamics (CFD) research has been presented [7][8][9]. In these studies, Darcy's law [7,8] and the extended Darcy-Ergun equation [10] were adopted as the momentum equation for water vapour flow in the porous adsorbent.…”

“…It is of late that computational fluid dynamics (CFD) research has been presented [7][8][9]. In these studies, Darcy's law [7,8] and the extended Darcy-Ergun equation [10] were adopted as the momentum equation for water vapour flow in the porous adsorbent. However, Darcy's law is appropriate only for incompressible fluids.…”

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

“…Zhang [6] enhances the heat transfer in a cylindrical double tube by inserting fins in an adsorbent bed, whereas Demir et al [7] and Rezk, Al-Dadah, Mahmoud, and Elsayed [1] investigate the effect of metal additives. 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].…”

Waste heat driven silica gel/water adsorption cooling in trigeneration

“…Solid sorption heat pumps do not need any CFC, HCFC or HFC refrigerant; most of them make use of natural refrigerants. Examples of solid sorbent vapour combinations are silica gel/water [10][11][12][13], SWS/water [13][14][15], zeolite/water [16], and NH 3 /carbon [17][18][19]. This technology does not have moving parts, is therefore silent, and does not require much servicing.…”