Two different kinds of experiments have been performed with regard to the regeneration conditions. In the first series of experiments constant regeneration humidity has been used. This allows the comparison of the FAM wheel data with other desiccant wheels. However, it prevents predictions for the wheel performance in a desiccant-evaporative system where ambient air is heated up for regeneration purposes. Obviously, depending on the ambient air conditions, the regeneration air conditions will vary, too. Therefore a second series of experiments has been conducted with the
regeneration humidity matching the ambient (supply) humidity. Constant parameter in both series of experiments included desiccant wheel speed of 20 1/hr, supply/regeneration air flow of 400 m3/hr, a counter flow arrangement and a resulting air velocity at the wheel face of 3.25 m/s. The wheel face area has been split equally between supply and regeneration stream.