Mathematical Simulation of Desiccant Cooling Systems and Effect of Various Parameters on the First and Second Law Performance

In this paper, a thermodynamic analysis of the desiccant cooling system is performed and applied to the ventilation and recirculation modes of the system operation. The exergy transport between the components and the destructions in each of the components of the desiccant cooling system are determined. Exergy efficiencies of the system and system components are determined. The effects of ambient conditions and regeneration temperature on the first and second law performance of desiccant cooling systems are investigated. It is determined that with increasing ambient temperature and relative humidity for both modes, the COP decrease and exergy efficiency of the cycles in mode ventilation and recirculation are increase and decrease, respectively.There are optimums regeneration temperatures that COP and exergy efficiency of desiccant cooling systems has maximum value.