Abstract
The main purpose of this work is to focus on comparing a FAM Z05 Zeolite-water and silica gel-water for designing two adsorption beds and evaluating the performance of the system. Two adsorption beds are tested in this study, the first one is using Polyvinyl acetate (PVA) glue for coating Zeolite with a weight of 1.2 kg, the second one is using polyvinylpyrrolidone (PVP) glue for coating Zeolite with a weight of 1.4 kg. The cooling water temperature of 25 °C and the chill water temperature of 20 °C are fixed during the experimental work, whereas three different hot water temperatures of 60, 70 and 80 °C are tested and changed, and five cycle’ times of 20, 25, 30, 35 and 40 minutes are changed to investigate their effects on the performance of the system. The test results show that the Coefficient of Performance (COP) on PVA glue at hot water of 70 °C is higher than that on PVP glue and this can be explained by the fact that the PVP glue blocks the porosity of the Zeolite and then deactivates the active nucleation sites which results in decreasing the adsorption of the water vapor. It is also observed that COP increases with increasing the cycle time. In addition, comparing the performance of the Zeolite adsorption bed with PVA glue to the silica-gel adsorption bed, the desorption temperature is much lower, and SCP at hot water of 80 °C is better than other types of coating glues.
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