Paper Conference

Proceedings of ASim Conference 2016: 3rd Asia conference of IBPSA-China, Japan, Korea


Optimization of an Indirect Evaporative Cooler in Liquid Desiccant and Evaporative Cooling-assisted 100% Outdoor Air Systems

H. Kim, S. Lee, J. Jeong

Abstract: The main purpose of this study is to propose the optimal geometry for a cross-flow indirect evaporative cooling system and evaluate its energy-saving potential when applying a liquid desiccant and evaporative cooling-assisted 100% outdoor air system. The optimization of the indirect evaporative cooling system was conducted with a numerical model that was validated with empirical data. The optimal geometry was determined considering the system coefficient of performance and supply air temperature through multi-objective optimization using a genetic algorithm. The cooling performance of the optimized indirect evaporative cooling system applied with the liquid desiccant system was compared with that of the base indirect evaporative cooling system. To evaluate the further energy-saving potential of the optimal indirect evaporative cooling system in an overall system configuration during the cooling season, energy consumption of the liquid desiccant and evaporative cooling-assisted 100% outdoor air systems was calculated in the cases of optimal and base indirect evaporative cooling system applications.
Keywords: Optimization, Indirect evaporative cooler, Optimum design, liquid desiccant system