Heat and mass transfer in adsorbent bed with consideration of non-equilibrium adsorption

In the solid adsorption refrigeration cycles, the actual adsorption processes are all non-equilibrium. To investigate the heat and mass transfer in adsorbent bed, mathematical model is established and solved by a numerical method. The relations between adsorption temperature, adsorption velocity, ad...

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Bibliographic Details
Published in:Applied thermal engineering 2009-10, Vol.29 (14), p.3198-3203
Main Author: Yang, Pei-zhi
Format: Article
Language:English
Subjects:
Adsorption
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heat and mass transfer
Heat transfer
Non-equilibrium
Refrigerating engineering
Refrigerating engineering. Cryogenics. Food conservation
Refrigeration
Techniques. Materials
Theoretical studies. Data and constants. Metering
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Summary:In the solid adsorption refrigeration cycles, the actual adsorption processes are all non-equilibrium. To investigate the heat and mass transfer in adsorbent bed, mathematical model is established and solved by a numerical method. The relations between adsorption temperature, adsorption velocity, adsorption quantity, coefficient of performance (COP), specific cooling power (SCP) and time are discussed during the process of cooling the adsorbent bed. The relations between desorption temperature, desorption velocity, desorption quantity and time are discussed during the process of heating the adsorbent bed. It indicates that there is a peak value for adsorption velocity in the adsorption process and there is also a peak value for desorption velocity in the desorption process. It also shows that the changing rate of the adsorbent temperature tends to let up, and the coefficient of performance value grows nearly linearly in the adsorption process and there is a peak value of SCP in the adsorption process.
ISSN:1359-4311
DOI:10.1016/j.applthermaleng.2009.04.024