Optimal matching of liquid desiccant air conditioning system driven by solar energy applied in low latitude isolated islands

According to the special climatic conditions of high temperature, high humidity, intense radiation and the difficulty of conventional energy supply in low latitude isolated islands, proposes a hybrid system of solar power generation and liquid desiccant air conditioning. Presents the air treatment process and principle of the hybrid system. Sets up the mathematical models of solar collector subsystem and photovoltaic power generation subsystem. Compares the cooling consumptions of the hybrid system with that of the conventional cooling dehumidification system at different outdoor air load ratios and moisture load ratios. The results show that the liquid desiccant air conditioning system saves over 60% of energy than conventional cooling dehumidification system. When the building moisture load accounts for 30% of the total load, 130 m2 of heat collector and 171 m2 of PV panel areas are needed for every 100 kW of cooling load. The more the moisture load, the more the solar collector areas and larger size of desiccant unit, and the smaller scale of indoor terminal and power generation subsystem. The overall energy conservation is more significant.