Paper Conference

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


Energy Performance Comparison Between a Heat Pump-driven Liquid Desiccant System and Conventional Liquid Desiccant System

J. Shin, S. Lee, J. Jeong

Abstract: Heat pump-driven liquid desiccant (HPLD) systems, which take advantage of the cooling and heating capacities from the evaporator and the condenser, respectively, have been developed rapidly in recent years. The purpose of this paper is to evaluate the energy saving potential of an HPLD system compared with a conventional liquid desiccant (LD) system. R134a was used for the refrigerant in the heat pump and an aqueous solution of LiCl was used in the LD system. A simulation based on an empirical model of the absorber was conducted, and total energy consumption in the proposed HPLD system was analyzed and compared with the conventional LD system. The results showed the proposed system had better performance in the aspect of energy savings than the conventional LD system. Moreover, HPLD is expected to have a great advantage in terms of compactness from the replacement of the cooling and heating devices in the conventional LD system with a heat pump.
Keywords: Heat pump-driven liquid desiccant system, Liquid desiccant system, Heat pump, Energy performance