期刊
FRONTIERS IN ENERGY RESEARCH
卷 10, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fenrg.2022.818486
关键词
adsorber; adsorbent sample; desorber; kinetics; plate heat exchanger
This paper presents the findings of an experimental study on the adsorption and desorption kinetics of an open-structured asymmetric plate heat exchanger used as an adsorber/desorber for adsorption heat transformation processes. The kinetic results of the small-scale adsorbent sample and the plate heat exchanger were fitted into exponential forms with high coefficients of determination. The study found a good match between the small-scale and full-scale adsorption kinetics, and utilized the kinetic data to estimate the power of the heat exchanger.
This paper introduces the results of an experimental study on the adsorption and desorption kinetics of a commercially available, open-structured asymmetric plate heat exchanger adapted to act as an adsorber/desorber for the application in adsorption heat transformation processes. In addition, a volumetric large temperature jump (V-LTJ) kinetic setup was applied to measure the adsorption and desorption kinetics of a small-scale adsorbent sample prepared dedicatedly to be representative for the adsorbent domain inside the investigated adsorber plate heat exchanger (APHE). All kinetic results of the small-scale adsorbent sample and the APHE were fitted into exponential forms with a single characteristic time constant (tau) with a coefficient of determination (R-2) better than 0.9531. A very good matching between the small-scale and full-scale adsorption kinetic measurements was obtained, with an average relative deviation of 12.3% in the obtained tau-values. In addition, the kinetic data of the small-scale adsorbent sample were utilized for estimating the expected specific instantaneous and moving average powers of the evaporator/condenser heat exchanger. The average relative deviation (ARD) between the moving average specific evaporator powers obtained from the small-scale and the full-scale measurements amounts between 5.4 and 15.1%.
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