A detailed analysis of entropy production and improvement of the thermodynamic cycle of an adsorption refrigerating plant

Mathematical modeling of the operation of an adsorption cooling system

“…The expenditure of energy on the unproductive heating of the heat transfer agent and, partially, of the metal can nearly completely be elimi nated by using a two adsorber scheme and by with drawing the heat evolved in adsorption to the heating circuit and the water cooled in desorption to the cool ing circuit [1][2][3][4][5]. The expenditure of energy on the heating of the sorbent is unavoidable and can be con trolled only by using sorbents adsorbing a greater amount of water under the given conditions.…”

“…However, the thermodynamic efficiency of the existing circuits is still appreciably lower that the theo retically attainable level [1][2][3][4][5][6], and this hampers the wide application of such systems. The pressure and temperature dependences of the adsorption equilib rium of a selected working pair, the characteristics of heat and mass transfer processes, the configuration of the system, the cycle stage switching times, and, consequently, the spatiotemporal organization of the batch process as a whole have an effect on its thermo dynamic efficiency.…”

Entropy Analysis of Temperature Swing Adsorption for CO2 Capture Using the Computational Fluid Dynamics (CFD) Method

“…Entropy 2019, 21, x FOR PEER REVIEW 3 of 25 theory of non-equilibrium thermodynamics, entropy generation can be expressed as the product of thermodynamic flow and thermodynamic force in the non-equilibrium process. Compared with the Clausius calculation method of entropy [20,[28][29][30][31], this calculation method could provide a clearer explanation on the irreversible factors in thermodynamic processes. In this paper, the CFD method is applied to comprehensively calculate and analysis the entropy generation in the three-step temperature swing adsorption cycle.…”