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A single-bed finned tube adsorption refrigeration system model was established to compare the adsorption characteristics of three metal organic framework materials, MIL-101(Cr), MIL-101(Cr)/CaCl2-10%, MIL-101(Cr)/ CaCl2-20%. The change of material properties under different thickness/length/number of fins was characterized, and the most suitable adsorption bed structure for different materials was obtained. The results show that the number of fins has little effect on the COP and specific cooling power of the material in the system. Choosing thinner fins can improve the COP of the system. With the increase of fin height, the COP showed a trend of increasing first and then decreasing. The three materials, MIL-101(Cr), MIL-101(Cr)/CaCl2-10%, MIL-101(Cr)/CaCl2-20%, obtained the highest COP when the fin heights were 50 mm, 60 mm, and 70 mm, respectively. The maximum specific cooling power was obtained when the fin heights were 20 mm, 60 mm, and 70 mm, which were 21.7 W/kg, 90.1 W/kg, and 174.5 W/kg, respectively. The height of the fin has a great influence on the performance of the system. When designing the adsorption bed, the appropriate fin height should be selected for the specific adsorbent.
PAPER REVISED: 2022-10-11
PAPER ACCEPTED: 2022-10-24
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THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 4, PAGES [2723 - 2738]
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