Absorption vacuum dehumidification system and method using the same

A method for absorption vacuum dehumidification, comprising:

• pumping a weak desiccant solution to a desorber, wherein the weak desiccant solution is heated up at the desorber by hot water input into the desorber such that first water vapor is desorbed from the weak desiccant solution and is then transferred to a condenser;
• inputting cooling water to the condenser, such that the transferred first water vapor is cooled down to become liquid water at the condenser;
• transferring a strong desiccant solution from the desorber to an absorber, wherein a heat exchanger is instructed to pre-cool the strong desiccant solution before the strong desiccant solution enters the absorber;
• and
• extracting second water vapor from a moist air stream which enters a feed side of a vacuum section through a hydrophilic membrane, so as to output a dehumidified air stream from the vacuum section, wherein the strong desiccant solution is diluted by absorbing the second water vapor inside the absorber.

An absorption vacuum dehumidification system, comprising:

• a vacuum section having a feed side and a permeate side and comprising a hydrophilic membrane that separates the feed side than the permeate side;
• an absorber connected to the permeate side of the vacuum section;
• a desorber connected to the absorber to form a desiccant solution cycle path between the absorber and the desorber;
• a photovoltaic energy supply configured to power a heat source that provides hot liquid into the desorber;
• a heat exchanger connected to the desiccant solution cycle path;
• a condenser connected to the desorber;
• and
• a desiccant solution flowing along the desiccant solution cycle path.