Abstract
In this study, hollow fiber membrane contactors have been applied for gas dehumidification using tri-ethylene glycol as absorbent. The effects of gas and liquid flow rates, inlet concentration of tri-ethylene glycol and flow direction on dehumidification efficiency have been investigated. The results reveal that membrane contactors can remove water vapor very effectively using tri-ethylene glycol, and very low water dew point as low as −50°C can be achieved. It also shows that liquid phase is not the limiting resistance in this system, as a result of very high solubility of water in tri-ethylene glycol.
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