Theoretical analysis and experimental investigation of a liquid dessicant air conditioning system

In this thesis, experimental and numerical studies have been performed on the performance of liquid desiccant internally cooled and adiabatic air conditioning systems. Working principles of these two systems have been investigated and it is endevaoured to obtain the optimum air conditioning conditions for these systems.Liquid desiccant air conditioning systems basically consist of a dehumidifier, a regenerator and an auxiliary heat exchanger. Inherent water vapor in the moist air passing through the demudifier is absorbed by the liquid desiccant and becomes diluted. The liquid dessicant which is less concantrated becomes concentrated by means of hot water flowing through the tubed in the regenerator and sent back to the dehumidifier for an effetive reutilization. In order to overcome the corrosion problem occured by the liquid dessicant, plate walls in the dehumidifier are coated with an epoxy. After experimental studies, it is observed that epoxy coatings covering the plate walls protect the dehumifier from the jeopardizing corrosive effect of the liquid desiccant. And also, it is seen that internally cooled dehumidifiers are more effective and efficient than that of adiabatic ones in terms of performance indexes obtained from the numerical and experimental studies.