| 요약2 |
Dehumidification process in a desiccant wheel was modeled into a set of linear differential equations under the linearization assumptions on the temperature and humidity profiles and the psychrometric relation. The exact solutions to the temperature and humidity ratio of the outlet air were obtained and assessed for the validity by comparison with a numerical simulation. The RMS errors were evaluated less than 10% for most operation range of the air velocity, the dehumidification period and the psychrometric conditions of the regeneration air. The analysis revealed that the behavior of a desiccant wheel depends on four major dimensionless parameters: κ, σ, N, and, each of which represents the sorption capacity, the thermal capacity, and the transfer capacity of the wheel and the psychometric relation of the air, respectively. |