A liquid desiccant regenerator system, including a desiccant/air heat exchanger having a first desiccant inlet and a desiccant reservoir. The reservoir has a first desiccant outlet, a second desiccant outlet and a second desiccant inlet. The first desiccant inlet and the first desiccant outlet are connectable to a heat source, the second desiccant inlet conducts diluted desiccant of the reservoir and the second desiccant outlet conducts concentrated desiccant from the reservoir. The second desiccant inlet and the desiccant outlet are connected to a desiccant/desiccant heat exchanger for applying heat to the diluted desiccant flowing into the reservoir. A dehumidification method is also provided.