Numerical modeling of combined heat and mass transfer in the adsorbent bed of a zeolite/water cooling system

Leong, K.C.; Liu, Y.

doi:10.1016/j.applthermaleng.2004.02.014

Cited by 80 publications

(25 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Adsorption and desorption process dynamics was described by the application of the Linear Driving Force (LDF) model [31]. The equation to calculate the time dependent change in concentration for the working bed (silica gel) was described:…”

Section: Modeling Of the Sorption Columnmentioning

confidence: 99%

Comparison of Analytical and Numerical Models of Adsorber/desorber of Silica Gel-water Adsorption Heat Pump

Zwarycz-Makles¹,

Szaflik²

2017

J. sustain. dev. energy water environ. syst.

View full text Add to dashboard Cite

In the paper, comparison of an analytical and a numerical model of silica gel/water adsorber/desorber is presented. Adsorber/desorber as a part of the two-bed single-stage adsorption heat pump is discussed. The adsorption heat pump under consideration consists of an evaporator, two adsorber/desorber columns and a condenser. Only heat and mass transfer was taken into account during operation of assumed adsorption heat pump. Adsorption equilibrium was described by the Dubinin-Astachov model. The presented mathematical models, both analytical and numerical, were created to describe the temperature, heat and concentration changes in the adsorber/desorber and consequently to describe the performance of the adsorption heat pump. Heat and mass transfer equations of the model were solved analytically and calculation parameters were entered in the common spreadsheet. The numerical model was established comprising of the set of heat and mass balance partial differential equations, together with the initial and boundary conditions and was solved by the numerical method of lines. The developed analytical model is very basic and can be used only for the initial estimates of mean cyclic temperature of the cooling/heating water in the adsorber/desorber bed. Validation of the numerical model shows reasonable agreement between the numerical and experimental averaged bed temperatures and is an indication of the proper mathematical modeling and the accuracy of the numerical analysis.

show abstract

Section: Modeling Of the Sorption Columnmentioning

confidence: 99%

Comparison of Analytical and Numerical Models of Adsorber/desorber of Silica Gel-water Adsorption Heat Pump

Zwarycz-Makles¹,

Szaflik²

2017

J. sustain. dev. energy water environ. syst.

View full text Add to dashboard Cite

show abstract

“…2(b). Some values of G and Γ for silica gel-water, active carbonmethanol, and zeolite 13X-water pairs are shown in Table 2 by using the thermophysical properties of these pairs at 53.5°C presented in Table 1 [18][19][20][21][22][23]. In this study, the effective thermal capacity and thermal conductivity are calculated by using the following relations:…”

Section: Governing Equationsmentioning

confidence: 99%

A parametric study on isobaric adsorption process in a closed adsorbent bed

İliş

Mobedi

Ülkü

2010

International Communications in Heat and Mass Transfer

View full text Add to dashboard Cite

A numerical study on heat and mass transfer in an annular adsorbent bed filled with adsorbent granules for an isobaric adsorption process is performed. In order to reduce the number of independent parameters that influences heat and mass transfer in the bed, the governing equations and related initial and boundary conditions for the problem are non-dimensionalized and this yields two dimensionless parameters as G and Γ. The G dimensionless parameter is the ratio of heat of adsorption to sensible heat stored by adsorbent particle and Γ parameter compares mass diffusion within the adsorbent particle and heat diffusion in the radial direction of the adsorbent bed. The obtained results show that the total dimensionless time for an adsorption process can be reduced by increasing of Γ value. The total dimensionless time is independent from G for low values of Γ (i.e. Γ = 10 ). The present study is performed for Γ values from 10 − 5 to 1 and G value from 1 to 100.

show abstract

“…Their model developed the energy balance on each component of the system and the mass balance for the adsorbent, and then investigated the effect of the configuration parameters on the system performance. Leong and Liu [13] concluded that, the adsorbent thickness and the bed porosity influenced the system performance strongly.…”

Section: Introductionmentioning

confidence: 99%

“…They found that, their established model is essential for both design and management of such storage system. Leong and Liu [13] established a two-dimensional non-equilibrium numerical model to study the combined heat and mass transfer in a zeolite/water adsorption bed. Their model developed the energy balance on each component of the system and the mass balance for the adsorbent, and then investigated the effect of the configuration parameters on the system performance.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Heat and Mass Transfer in Activated Carbon Granules/R-134a Adsorbent Pair for Compact Adsorption Chiller

Shmroukh¹

2015

IJRET

View full text Add to dashboard Cite

show abstract

Numerical modeling of combined heat and mass transfer in the adsorbent bed of a zeolite/water cooling system

Cited by 80 publications

References 17 publications

Comparison of Analytical and Numerical Models of Adsorber/desorber of Silica Gel-water Adsorption Heat Pump

Comparison of Analytical and Numerical Models of Adsorber/desorber of Silica Gel-water Adsorption Heat Pump

A parametric study on isobaric adsorption process in a closed adsorbent bed

Investigation of Heat and Mass Transfer in Activated Carbon Granules/R-134a Adsorbent Pair for Compact Adsorption Chiller

Contact Info

Product

Resources

About