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Empirical Analysis of Dehumidification Performance of Hollow-Fiber-Membrane Dehumidifier.

Number: No 091

Author(s) : CHEON S.-Y., CHO H. J., KO J., JEONG J. W.

Summary

Membrane dehumidifiers dry air via an isothermal process, which is why they can potentially yield a better dehumidification performance than conventional dehumidification systems. In this research, the dehumidification performance of a hollow-fiber-membrane dehumidifier was estimated by means of a series of experiments. The membrane dehumidifier consists of a hollow-fiber-membrane unit and an air pump. As the prototype unit used a sweep-gas, the use of dehumidified air was a drawback on the permeate side. Five operating parameters were considered as effective dehumidification variables: inlet air temperature, inlet air relative humidity, intake air flow rate, sweep gas ratio, and inlet air pressure. The dehumidification performance of the membrane dehumidifier was quantified as the difference in the humidity ratio and amount of dehumidification. The experimental data were analyzed by means of a parametric study involving the five independent operating parameters. Consequently, we found that the dehumidification performance was significantly impacted by the inlet air pressure that formed the driving force, and the inlet air conditions also exhibited a positive correlation with performance. When the sweep-gas ratio ranged from 0.4 to 0.6, a high value of dehumidification was achieved under balanced flow conditions. 

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  • Original title: Empirical Analysis of Dehumidification Performance of Hollow-Fiber-Membrane Dehumidifier.
  • Record ID : 30029973
  • Languages: English
  • Subject: Technology
  • Source: 13th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
  • Publication date: 2021/08/31

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