Air dehumidification by absortive and evaporative cooling.

Especially in modern buildings with small capacity of humidity storage it is necessary to reduce the humidity in the supply air. Normally a refrigeration system containing CFC s is used. There are some alternative fluids available, but mostly they show a high global warming potential. These systems all need electrical energy to be driven and therefore it is necessary to consider other possibilities with alternative systems. The most promising systems are sorptive systems which are used in open cycles. In these systems the air is dehumidified by a liquid sorbens and cooled indirectly by evaporating water in an open circuit. In this paper a design of an open cycle liquid desiccant system is shown as well as two possible system configurations. Very interesting possibilities for the regeneration are given in using low temperature energy and also solar radiation in sunny areas.