Sorption Characteristics of Organic Sorbent Coated on Heat Transfer Surface of a Heat Exchanger Under the Low Temperature

This paper describes the transient sorption characteristics of organic sorbent under the low temperature. Our previous research result has shown that the organic sorbent had a large amount of water vapor uptake ability, and was also excellent in processability and deterioration resistance. The measured results of sorption isotherm equilibrium revealed that the organic polymer sorbent was a kind of material which sorption ability depends on temperature. The experiments in which the moist air was passed into the heat exchanger coated with sorption material were conducted under various conditions of the air flow velocity, the brine temperature and the air absolute humidity. It is found that the sorption rate of vapor is affected most greatly by the air absolute humidity. Finally the average mass transfer coefficient of the organic sorbent is non-dimensionalized as a function of Reynolds number, non-dimensional temperature and non-dimensional vapor pressure of saturation.

Abstract licence: CC BY-NC-ND

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