Abstract: A method and system for controlling moisture content of a gaseous flow. A pair of desiccant contact structures each provided with a process adapted to pass through a process gaseous stream to altering the moisture content of the gaseous stream. Each desiccant contact structure also has a regeneration side adapted to pass through a regeneration gaseous stream for altering the moisture content of a desiccant in the contact structure. The process side of a first desiccant contact structure is fluidly connected to the regeneration side of a second desiccant contact structure via a first closed recirculation loop. In an alternative embodiment a second closed recirculation loop may also be provided on the regeneration side of the first desiccant contact structure. Gaseous flow is then provided to the process side of the second desiccant contact structure to thereby control its moisture.

Abstract: A solid desiccant cooling system and method of operating a solid desiccant cooling cycle is provided comprising a desiccant support structure for cyclic movement of solid desiccant between a first location where a solid desiccant contacts a source of air to be dehumidified and a second location with a solid desiccant is regenerated. A heat exchange arrangement is provided preferably at the first location. The heat exchange arrangement provides a heat exchange or thermal engagement of a heat exchange fluid e.g. water, with the desiccant containing tubes. The proposed method and apparatus cools the desiccant while dehumidification of air is conducted. Preferably, the heat exchange fluid is provided to the desiccant support structure at a position at or adjacent its longitudinal axis, to flow radially therefrom.

Abstract: A method and system for controlling moisture content of a gaseous flow. A pair of desiccant contact structures each provided with a process adapted to pass through a process gaseous stream to altering the moisture content of the gaseous stream. Each desiccant contact structure also has a regeneration side adapted to pass through a regeneration gaseous stream for altering the moisture content of a desiccant in the contact structure. The process side of a first desiccant contact structure is fluidly connected to the regeneration side of a second desiccant contact structure via a first closed recirculation loop. In an alternative embodiment a second closed recirculation loop may also be provided on the regeneration side of the first desiccant contact structure. Gaseous flow is then provided to the process side of the second desiccant contact structure to thereby control its moisture.

Abstract: A solid desiccant cooling system and method of operating a solid desiccant cooling cycle is provided comprising a desiccant support structure for cyclic movement of solid desiccant between a first location where a solid desiccant contacts a source of air to be dehumidified and a second location with a solid desiccant is regenerated. A heat exchange arrangement is provided preferably at the first location. The heat exchange arrangement provides a heat exchange or thermal engagement of a heat exchange fluid e.g. water, with the desiccant containing tubes. The proposed method and apparatus cools the desiccant while dehumidification of air is conducted. Preferably, the heat exchange fluid is provided to the desiccant support structure at a position at or adjacent its longitudinal axis, to flow radially therefrom.