Theoretical Study On Falling Film Fin-Tube Dehumidifier Integrated with an Evaporative Cooler

The current work presents the theoretical analysis of a falling film fin-tube dehumidifier integrated with an evaporative cooler. The evaporative cooler is compiled with a dehumidifier to provide internal cooling for maintaining the solution and air temperature. The theoretical model examines the heat and mass transfer between the air and the solution, which are moving in a counter-flow direction. The study first presents the validation of the theoretical model with the experimental findings. The maximum disparity between theoretical and experimental results for moisture reduction with solution volume flow rate is found to be ±6.2 %, while for moisture reduction with air flow rate, it is found to be ±13.8 %. The paper then discusses the impact of tube height, air, and solution inlet parameters on system performance. The findings indicate that for a solution volume flow rate of 12.5 LPM and airflow rate of 5 kg/s, the change in outlet air humidity ratio with tube height is observed to be at its highest.